於本研究中，利用氧化聚合及原位聚合方法， 將3,4-乙烯二氧噻吩，混摻3-噻吩甲酸，使之聚合於黃金製之指插式電極上，製成電阻式氣體感測器。
我們將探討[3-噻吩甲酸]/[ 3,4-乙烯二氧噻吩]之組成比例對於氣體感測所產生之效應，以及經過酸鹼處理後之感測訊號。結果顯示隨著[3-噻吩甲酸]/[ 3,4-乙烯二氧噻吩]之組成比例增大，本感測器對於50 ppm之一氧化氮感測結果，從原來幾乎沒有訊號，增加到2.2%。然而，我們還可以利用氨水以及鹽酸處理，藉以還原高分子膜，以及增加表面粗糙度，進而使反應面積增加，使訊號又從2.2%上升至5.1%。 溫度效應實驗顯示本系統最適合操作於室溫。本感測器於1 ppm到10 ppm的一氧化氮濃度範圍間，訊號與相對應之濃度具線性關係；靈敏度約為0.93%/ppm；偵測下限經計算約為25 ppb (在訊號/雜訊 = 3 之標準下) ；反應時間(t95)，以及恢復時間分別為756秒及超過一小時。從感測器為期一個月的穩定性測試並無發現明顯的靈敏度衰退趨勢。在最後我們藉由系統改進，使原本較長的恢復時間(超過一小時)，大幅降至約十分鐘即可使訊號恢復至基線。
關鍵字：氧化聚合、原位聚合、3,4-乙烯二氧噻吩、3-噻吩甲酸、指插式電極、電阻式氣體感測器、一氧化氮。

In this study, 3,4-ethylenedioxythiophene (EDOT) was in situ oxidatively polymerized and doped with 3-thiophenecarboxylic acid (TCA) on a gold interdigitated electrode, and the resulted films were used as a resistive type gas sensor. The effects of the composition, ie. the ratio of [TCA]/[EDOT], and the acid/base treatment on the sensor response were investigated. The results showed that as the ratio of [TCA]/[EDOT] was increased, the sensor response to the exposure of 50 ppm NO gas was increased from nearly none to a slightly higher value of 2.2%. However, the sensor response can be further increased from 2.2 to 5.1% if the in situ synthesized film is to be treated with ammonia and hydrochloric acid sequentially during which the composite film is reduced, and the surface roughness increase. The temperature effect shows the optimum operation temperature is at room temperature. The sensor showed linear response in the concentration between 1 and 10 ppm. The sensitivity for the PEDOT/TCA composite sensor is ~0.93%/ppm. The limit of detection is 25 ppb (S/N = 3). The response time (t95) and recovery time (t95) were recorded to be 756 s and over 1 hr. respectively. The long-term stability was also tested for a month, which shows no obvious decay in sensitivity. The long recovery time (> 1 hr) appeared in the PEDOT/TCA composite film was also overcome (~10 min) by heating the sensor during recovery.
Keywords: resistive type gas sensor, oxidatively polymerization, in situ polymerization, EDOT, 3-thiophenecarboxylic acid (TCA), interdigitated electrode, nitric oxide.

摘 要 I
ABSTRACT II
CONTENTS III
LIST OF TABLES V
LIST OF FIGURES VI
Chapter 1 INTRODUCTION 1
Chapter 2 LITERATURE REVIEW 3
2.1 PEDOT 3
2.2 Gas sensor based on conducting polymers 5
2.2.1 Introduction of conducting polymers 5
2.2.2 Synthesis of conducting polymers 6
2.2.3 Preparation of conducting polymer films 6
2.2.4 Sensing principles 7
2.2.5 Chemical reactions between analytes and conducting polymers 8
2.2.6 Chemiresistors 9
2.2.7 Sensing materials 10
2.2.8 Device fabrication 12
2.2.9 Working environment 13
2.2.10 Nitric oxide chemiresistor sensor based on PEDOT:PSS [1] 14
2.3 Nitric oxide properties 15
2.3.1 Introduction 15
2.3.2 Appearance 15
2.3.3 Toxicity and biochemical effect 15
2.3.4 Formation of nitrogen dioxide 16
CHAPTER 3 EXPERIMENT 17
3.1 Preparation of the PEDOT/TCA composite thick film 17
3.2 Base/acid treatment 18
3.3 Material character properties 18
3.3.1 FT-IR 18
3.3.2 UV-vis 18
3.3.3 SEM 19
3.4 Gas sensing 19
CHAPTER 4 RESULTS AND DISCUSSION 21
4.1 Response of PEDOT-TCA composite to NO gas after base and acid treatment 21
4.2 Composition analysis of sensing films 21
4.3 Morphology-property analysis 22
4.4 Analysis of the extract solutions 23
4.5 Analysis of sensing films 23
4.6 Proposed mechanism 24
4.7 Transit responses of PEDOT-TCA composite film 25
4.8 Temperature effect 25
4.9 Gas characteristics of PEDOT-TCA composite film 26
4.10 System improvement 27
CHAPTER 5 CONCLUSIONS 29
REFERENCES 61

[1] C.Y. Lin, J.G. Chen, C.W. Hu, J. J. Tunney, K.C. Ho 2009 Sens. Actuators B Chem. 140 402.
[2] D. M de Leeuw, P. A. Kraakman, P. E. G. Bongaerts, C. M. J. Mutsaers, D. B. M. Klassen 1994 Synth. Met. 66 263.
[3] Akhtar M., Weakliem H. A., Paiste R.M., Gaughan K. 1988 Synth. Met. 26 203.
[4] Camurlu P, Cirpan A, Toppare L. 2004 J. Electroanal. Chem 572 61.
[5] Josowicz M, Janata 1986 J. Anal. Chem. 58 514.
[6] Jonas, F.; Schrader, L. 1991 Synth. Met. 41, 831.
[7] I. Winter, C. Reese, J. Hormes, G. Heywang, F. Jonas, 1995 Chem. Phys. 194 207.
[8] G. A. Sotzing, J.R. Reynolds, P. J. Steel, 1997 Adv. Mater., 7 795.
[9] L. Groenendaal, G. Zotti, F. Jonas, 2001 Synth. Met. 118 105.
[10] N. C. Billingham, P. D.Calvert, 1989 Adv. Polym. Sci. 90 1.
[11] B. L Groenendaal, F. Jonas, D. Freitag, H. Pielartzik, J. R. Reynolds 2000 Adv. Mater. 12 481.
[12] B. L Groenendaal, F. Jonas, D. Freitag, H. Pielartzik, J. R. Reynolds 2000 Adv. Mater. 12 481.
[13] Lei, Y.; Oohata, H.; Kuroda, S..; Sasaki, S.;Yamamotoa, T. 2005 Synth. Met., 149 211.
[14] de Leeuw, D. M., Kraakman, P. A. Bongaerts, 1994 Synth. Met. 66 263.
[15] de Leeuw, D. M.; Kraakman, P. A.; Bongaerts, P.E. G.; Mutsaers, C. M. J.; Klaassen, D. B. M. 1994 Synth. Met. 66 263.
[16] Ha, Y. H.; Nikolov, N.; Pollack, S. K.; Mastrangelo, J.; Martin, B. D.; Shashidhar, R. 2004 Adv. Funct. Mater., 14 615.
[17] Stephan, O.; Tran-Van, F.; Chevrot, C. 2002 Synth. Met. 131, 31.
[18] Beouch, L.; Van, F. T. S., O; Vial, J. C.; Cherot, C. 2001 Synth. Met. 122 351.
[19] Seshadri, V.; Wu, L.; Sotzing, G. A. 2003 Langmuir 19 9479.
[20] Cheng, Jui-Hung; Dai, Chi-An; Chiu, Wen-Yen 2008 J. Polym. Sci. 46 1662.
[21] L. Zhan et al. 2008 Electrochimica. Acta. 53 8319.
[22] Xia, Ouyang 2010 ACS Appl. Mater. Interfaces 2 474.
[23] Y.-H. Ha et al. 2004 Adv. Funct. Mater. 14 615.
[24] Nylabder, C.; Armgrath, M.; Lundstrom, I. An ammonia detector based on a conducting polymer. 1983 Proceedings of the International Meeting on Chemical Sensors, Fukuoka, Japan 203.
[25] Hua Bai and Gaoquan Shi 2007 Sensors 7 267.
[26] McGovern, S.T.; Spinks, G.M.; Wallace, G.G. Micro-humidity sensors based on a processable polyaniline blend. 2005 Sens. Actuators B 107 657.
[27] Cho, J.H.; Yu, J.B.; Kim, J.S.; Sohn, S.O.; Lee, D.D.; Huh, J.S. Sensing behaviors of polypyrrole sensor under humidity condition. 2005 Sens. Actuators B 108, 389.
[28] Ram, M.K.; Yavuz, O.; Lahsangah, V.; Aldissi, M. CO gas sensing from ultrathin nano-composite conducting polymer film. 2005 Sens. Actuators B 106 750.
[29] Nohria, R.; Khillan, R.K.; Su, Y.; Dikshit, R.; Lvov, Y.; Varahramyan, K. Humidity sensor based on ultrathin polyaniline film deposited using layer-by-layernano-assembly. 2006 Sens. Actuators B 114 218.
[30] Agbor, N.E.; Petty, M.C.; Monkman, A.P. Polyaniline Thin-Films for Gas-Sensing. 1995 Sens. Actuators B 28 173.
[31] Stussi, E.; Cella, S.; Serra, G.; Venier, G.S. Fabrication of conducting polymer patterns for gas sensing by a dry technique. 1996 Mater. Sci. Eng. C-Biomimetic Mater. Sens. Syst. 4 27.
[32] Nguyen, V.C.; Potje-Kamloth, K. Electrical and chemical sensing properties of doped polypyrrole/gold Schottky barrier diodes. 1999 Thin Solid Films 338 142.
[33] Van, C.N.; Potje-Kamloth, K. Electrical and NOx gas sensing properties of metallophthalocyanine-doped polypyrrole/silicon heterojunctions. 2001 Thin Solid Films, 392 113.
[34] Bhat, N.V.; Gadre, A.P.; Bambole, V.A. Structural, mechanical, and electrical properties of electropolymerized polypyrrole composite films. 2001 J. Appl. Polym. Sci., 80 2511.
[35] Yoon, H.; Chang, M.; Jang, J. Sensing behaviors of polypyrrole nanotubes prepared in reverse microemulsions: Effects of transducer size and transduction mechanism. 2006 J. Phys. Chem. B 110 14074.
[36] Dixit, V.; Misra, S.C.K.; Sharma, B.S. Carbon monoxide sensitivity of vacuum deposited polyaniline semiconducting thin films. 2005 Sens. Actuators B, 104 90.
[37] Misra, S.C.K.; Mathur, P.; Srivastava, B.K. Vacuum-deposited nanocrystalline polyaniline thin film sensors for detection of carbon monoxide. 2004 Sens. Actuators A, 114 30.
[38] Densakulprasert, N.; Wannatong, L.; Chotpattananont, D.; Hiamtup, P.; Sirivat, A.; Schwank, J. Electrical conductivity of polyaniline/zeolite composites and synergetic interaction with CO. 2005 Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. 117 276.
[39] Watcharaphalakorn, S.; Ruangchuay, L.; Chotpattahanont, D.; Sirivat, A.; Schwank, J. Polyaniline/polyimide blends as gas sensors and electrical conductivity response to CO-N-2 mixtures. 2005 Polym. Int. 54 1126.
[40] Liu, H.Q.; Kameoka, J.; Czaplewski, D.A.; Craighead, H.G. Polymeric nanowire chemical sensor. 2004 Nano Lett. 4 671.
[41] Krivan, E.; Visy, C.; Dobay, R.; Harsanyi, G.; Berkesi, O. Irregular response of the polypyrrole films to H2S. 2000 Electroanalysis 12 1195.
[42] Janata, J.; Josowicz, M. Conducting polymers in electronic chemical sensors. 2003 Nat. Mater. 2 19.
[43] Janata, J. Electrochemical microsensors. 2003 Proc. IEEE 91 864.
[44] Chen, H.; Josowicz, M.; Janatax, J. Chemical effects in organic electronics. 2004 Chem. Mater., 16, 4728.
[45] Vercelli, B.; Zecchin, S.; Comisso, N.; Zotti, G.; Berlin, A.; Dalcanale, E.; Groenendaal, L.B. Solvoconductivity of polyconjugated polymers: The roles of polymer oxidation degree and solvent electrical permittivity. 2002 Chem. Mater. 14 4768.
[46] Guernion, N.; Costello, B.P.J.D.; Ratcliffe, N.M. The synthesis of 3-octadecyl- and 3-docosylpyrrole, their polymerisation and incorporation into novel composite gas sensitive resistors. 2002 Synth. Met. 128, 139.
[47] Mello, S.V.; Dynarowicz-Latka, P.; Dhanabalan, A.; Bianchi, R.F.; Onmori, R.; Janssen, R.A.J.; Oliveira, O.N. Langmuir and Langmuir-Blodgett films from the N-hexyl-pyrrole-thiophene (AB) semi-amphiphilic copolymer. 2002 Colloid. Surf. A-Physicochem. Eng. Asp., 198 45.
[48] Krondak, M.; Broncova, G.; Anikin, S.; Merz, A.; Mirsky, V.M. Chemosensitive properties of poly-4,4''-dialkoxy-2,2''-bipyrroles. 2006 J. Solid State Electrochem., 10, 185.
[49] Deng, Z.P.; Stone, D.C.; Thompson, M. Characterization of polymer films of pyrrole derivatives for chemical sensing by cyclic voltammetry, X-ray photoelectron spectroscopy and vapour sorption studies. 1997 Analyst 122, 1129.
[50] Park, Y.H.; Kim, S.J.; Lee, J.Y. Preparation and characterization of electroconductive polypyrrole copolymer Langmuir-Blodgett films. 2003 Thin Solid Films 425 233.
[51] Costello, B.P.J.D.; Ratcliffe, N.M.; Sivanand, P.S. The synthesis of novel 3-substituted pyrrole monomers possessing chiral side groups: a study of their chemical polymerisation and the assessment of their chiral discrimination properties. 2003 Synth. Met. 139, 43.
[52] Hosseini, S.H.; Entezami, A.A. Chemical and electrochemical synthesis of conducting graft copolymer of vinyl acetate with pyrrole and studies of its gas and vapor sensing. 2003 J. Appl. Polym. Sci. 90 40.
[53] Chen, Z.K.; Ng, S.C.; Li, S.F.Y.; Zhong, L.; Xu, L.G.; Chan, H.S.O. The fabrication and evaluation of a vapour sensor based on quartz crystal microbalance coated with poly(o-anisidine) Langmuir-Blodgett layers. 1997 Synth. Met. 87 201.
[54] Paterno, L.G.; Mattoso, L.H.C. Influence of different dopants on the adsorption, morphology, and properties of self-assembled films of poly(o-ethoxyaniline). 2002 J. Appl. Polym. Sci. 83 1309.
[55] Valentini, L.; Bavastrello, V.; Stura, E.; Armentano, I.; Nicolini, C.; Kenny, J.M. Sensors for inorganic vapor detection based on carbon nanotubes and poly(o-anisidine) nanocomposite material. 2004 Chem. Phys. Lett. 383 617.
[56] Stella, R.; Barisci, J.N.; Serra, G.; Wallace, G.G.; De Rossi, D. Characterisation of olive oil by an electronic nose based on conducting polymer sensors. 2000 Sens. Actuators B 63 1.
[57] Bekyarova, E.; Davis, M.; Burch, T.; Itkis, M.E.; Zhao, B.; Sunshine, S.; Haddon, R.C. Chemically functionalized single-walled carbon nanotubes as ammonia sensors. 2004 J. Phys. Chem. B 108 19717.
[58] Kondratowicz, B.; Narayanaswamy, R.; Persaud, K.C. An investigation into the use of electrochromic polymers in optical fibre gas sensors. 2001 Sens. Actuators B 74 138.
[59] English, J.T.; Deore, B.A.; Freund, M.S. Biogenic amine vapour detection using poly(anilineboronic acid) films. 2006 Sens. Actuators B 115 666.
[60] Kim, S.R.; Choi, S.A.; Kim, J.D.; Kim, K.J.; Lee, C.; Rhee, S.B. Preparation of Polythiophene Lb Films and Their Gas Sensitivities by the Quartz-Crystal Microbalance. 1995 Synth. Met. 71 2027.
[61] Schottland, P.; Bouguettaya, M.; Chevrot, C. Soluble polythiophene derivatives for NO2 sensing applications. 1999 Synth. Met. 102 1325.
[62] Torsi, L.; Tanese, M.C.; Cioffi, N.; Gallazzi, M.C.; Sabbatini, L.; Zambonin, P.G.; Raos, G.; Meille, S.V.; Giangregorio, M.M. Side-chain role in chemically sensing conducting polymer field-effect transistors. 2003 J. Phys. Chem. B 107 7589.
[63] Torsi, L.; Tafuri, A.; Cioffi, N.; Gallazzi, M.C.; Sassella, A.; Sabbatini, L.; Zambonin, P.G. Regioregular polythiophene field-effect transistors employed as chemical sensors. 2003 Sens. Actuators B 93 257.
[64] Chyla, A.; Lewandowska, A.; Soloducho, J.; Gorecka-Drzazga, A.; Szablewski, M. 4-t-butyl-CuPc-PODT molecular composite material for an effective gas sensor. 2001 IEEE Trns. Dielectr. Electr. Insul. 8 559.
[65] Sakurai, Y.; Jung, H.S.; Shimanouchi, T.; Inoguchi, T.; Morita, S.; Kuboi, R.; Natsukawa, K. Novel array-type gas sensors using conducting polymers, and their performance for gas identification. 2002 Sens. Actuators B 83 270.
[66] Kawai, T.; Kojima, S.; Tanaka, F.; Yoshino, K. Electrical property of poly(3-octyloxythiophene) and its gas sensor application. 1998 Japanese Journal of Applied Physics Part 1-Regular Papers Short Notes & Review Papers 37 6237.
[67] Gallazzi, M.C.; Tassoni, L.; Bertarelli, C.; Pioggia, G.; Di Francesco, F.; Montoneri, E. Poly(alkoxy-bithiophenes) sensors for organic vapours. 2003 Sens. Actuators B 88 178.
[68] Tanaka, F.; Kawai, T.; Kojima, S.; Yoshino, K. Electrical and optical properties of poly(3-alkoxythiophene) and their application for gas sensor. 1999 Synth. Met. 102, 1358.
[69] Hosseini, S.H.; Entezami, A.A. Chemical and electrochemical synthesis of homopolymer and copolymers of 3-methoxyethoxythiophene with aniline, thiophene and pyrrole for studies of their gas and vapour sensing. 2001 Polym. Adv. Technol. 12 524.
[70] Rella, R.; Siciliano, P.; Toscano, G.; Valli, L.; Schenetti, L.; Mucci, A.; Iarossi, D. Langmuir-Blodgett films of poly[3-(butylthio)thiophene]: optical properties and electrical measurements in controlled atmosphere. Sens. Actuators B 1999, 57, 125-129.
[71] Ewbank, P.C.; Loewe, R.S.; Zhai, L.; Reddinger, J.; Sauve, G.; McCullough, R.D. Regioregular poly(thiophene-3-alkanoic acid)s: water soluble conducting polymers suitable for chromatic chemosensing in solution and soild state. Tetrahedron 2004 60 11269.
[72] Li, B.; Sauve, G.; Iovu, M.C.; Jeffries-El, M.; Zhang, R.; Cooper, J.; Santhanam, S.; Schultz, L.; Revelli, J.C.; Kusne, A.G.; Kowalewski, T.; Snyder, J.L.; Weiss, L.E.; Fedder, G.K.; McCullough, R.D.; Lambeth, D.N. Volatile organic compound detection using nanostructured copolymers. 2006 Nano Lett. 6 1598.
[73] Schottland, P.; Fichet, O.; Teyssie, D.; Chevrot, C. Langmuir-Blodgett films of an alkoxy derivative of poly(3,4-ethylenedioxythiophene). 1999 Synth. Met. 101 7.
[74] Quartarone, E.; Mustarelli, P.; Magistris, A.; Russo, M.V.; Fratoddi, I.; Furlani, A. Investigations by impedance spectroscopy on the behaviour of poly(N,N-dimethylpropargylamine) as humidity sensor. 2000 Solid State Ion. 136 667.
[75] Bearzotti, A.; Fratoddi, I.; Palummo, L.; Petrocco, S.; Furlani, A.; Lo Sterzo, C.; Russo, M.V. Highly ethynylated polymers: synthesis and applications for humidity sensors. 2001 Sens. Actuators B 76 316.
[76] Freund, M.S.; Lewis, N.S. A Chemically Diverse Conducting Polymer-Based Electronic Nose. 1995 Proc. Natl. Acad. Sci. U. S. A. 92 2652.
[77] Ruangchuay, L.; Sirivat, A.; Schwank, J. Selective conductivity response of polypyrrole-based sensor on flammable chemicals. 2004 React. Funct. Polym. 61 11.
[78] Unde, S.; Ganu, J.; Radhakrishnan, S. Conducting polymer-based chemical sensor: Characteristics and evaluation of polyaniline composite films. 1996 Adv. Mater. Opt. Electron. 6 151.
[79] Lin, C.W.; Hwang, B.J.; Lee, C.R. Methanol sensors based on the conductive polymer composites from polypyrrole and poly(vinyl alcohol). Mater. Chem. Phys. 1998 55 139.
[80] Lin, C.W.; Hwang, B.J.; Lee, C.R. Characteristics and sensing behavior of electrochemically codeposited polypyrrole-poly(vinyl alcohol) thin film exposed to ethanol vapors. 1999 J. Appl. Polym. Sci. 73 2079.
[81] Bhat, N.V.; Gadre, A.P.; Bambole, V.A. Investigation of electropolymerized polypyrrole composite film: Characterization and application to gas sensors. 2003 J. Appl. Polym. Sci. 88 22.
[82] Ruangchuay, L.; Sirivat, A.; Schwank, J. Polypyrrole/poly(methylmethacrylate) blend as selective sensor for acetone in lacquer. 2003 Talanta 60 25.
[83] Guernion, N.; Ewen, R.J.; Pihlainen, K.; Ratcliffe, N.M.; Teare, G.C. The fabrication and characterisation of a highly sensitive polypyrrole sensor and its electrical responses to amines of differing basicity at high humidities. 2002 Synth. Met. 126 301.
[84] Bhat, N.; Geetha, P.; Pawde, S. Preparation and characterization of composites of polypyrrole. 1999 Polym. Eng. Sci., 39 1517.
[85] Brady, S.; Lau, K.T.; Megill, W.; Wallace, G.G.; Diamond, D. The development and characterisation of conducting polymeric-based sensing devices. 2005 Synth. Met. 154 25.
[86] Bouchtalla, S.; Auret, L.; anot, J.M.; Deronzier, A.; Moutet, J.C.; Seta, P. [87] An, K.H.; Jeong, S.Y.; Hwang, H.R.; Lee, Y.H. Enhanced sensitivity of a gas sensor incorporating single-walled carbon nanotube-polypyrrole nanocomposites. 2004 Adv. Mater. 16 1005.
[88] Liu, Y.C.; Hwang, B.J.; Hsu, W.C. Characteristics of Pd/Nafion oxygen sensor modified with polypyrrole by chemical vapor deposition. 2002 J. Solid State Electrochem. 6 351.
[89] Liu, Y.C.; Hwang, B.J.; Hsu, W.C. Improvement in anti-aging of metallized Nafion hydrogen sensors modified by chemical vapor deposition of polypyrrole. 2002 Sens. Actuators B 87 304.
[90] Liu, Y.C.; Hwang, B.J.; Chen, Y.L. Nafion based hydrogen sensors: Pt/Naflon electrodes prepared by Takenata-Torikai method and modified with polypyrrole. 2002 Electroanalysis 14 556.
[91] Lavrik, N.V.; DeRossi, D.; Kazantseva, Z.I.; Nabok, A.V.; Nesterenko, B.A.; Piletsky, S.A.; Kalchenko, V.I.; Shivaniuk, A.N.; Markovskiy, L.N. Composite polyaniline/calixarene Langmuir-Blodgett films for gas sensing. 1996 Nanotechnology, 7 315.
[92] Tongpool, R. Effect of nitrogen dioxide and temperature on the properties of lead phthalocyanine in polypyrrole. 2003 Thin Solid Films 438 14.
[93] Tongpool, R.; Yoriya, S. Kinetics of nitrogen dioxide exposure in lead phthalocyanine sensors. 2005 Thin Solid Films 477 148.
[94] Suri, K.; Annapoorni, S.; Sarkar, A.K.; Tandon, R.P. Gas and humidity sensors based on iron oxide-polypyrrole nanocomposites. 2002 Sens. Actuators B 81 277.
[95] Brezoi, D.V.; Ion, R.M. Phase evolution induced by polypyrrole in iron oxide-polypyrrole nanocomposite. 2005 Sens. Actuators B 109, 171.
[96] Geng, L.; Wang, S.R.; Zhao, Y.Q.; Li, P.; Zhang, S.M.; Huang, W.P.; Wu, S.H. Study of the primary sensitivity of polypyrrole/r-Fe2O3 to toxic gases. 2006 Mater. Chem. Phys. 99 15.
[97] Matsubara, I.; Hosono, K.; Murayama, N.; Shin, W.; Izu, N. Synthesis and gas sensing properties of polypyrrole/MoO3-layered nanohybrids. 2004 Bull. Chem. Soc. Jpn. 77 1231.
[98] Geng, L.N.; Huang, X.L.; Zhao, Y.Q.; Li, P.; Wang, S.R.; Zhang, S.M.; Wu, S.H. H2S sensitivity study of polypyrrole/WO3 materials. 2006 Solid-State Electron. 50 723.
[99] Geng, L.N.; Zhao, Y.Q.; Huang, X.L.; Wang, S.R.; Zhang, S.M.; Huang, W.P.; Wu, S.H. The preparation and gas sensitivity study of polypyrrole/zinc oxide. 2006 Synth. Met. 156 1078.
[100] Matsuguchi, M.; Io, J.; Sugiyama, G.; Sakai, Y. Effect of NH3 gas on the electrical conductivity of polyaniline blend films. 2002 Synth. Met. 128 15.
[101] Matsuguchi, M.; Okamoto, A.; Sakai, Y. Effect of humidity on NH3 gas sensitivity of polyaniline blend films. 2003 Sens. Actuators B 94 46.
[102] Segal, E.; Tchoudakov, R.; Narkis, M.; Siegmann, A.; Wei, Y. Polystyrene/polyaniline nanoblends for sensing of aliphatic alcohols. 2005 Sens. Actuators B 104 140.
[103] Silverstein, M.S.; Tai, H.W.; Sergienko, A.; Lumelsky, Y.L.; Pavlovsky, S. PolyHIPE: IPNs, hybrids, nanoscale porosity, silica monoliths and ICP-based sensors. 2005 Polymer 46 6682.
[104] Ogura, K.; Shiigi, H.; Nakayama, M.; Ogawa, A. Thermal properties of poly(anthranilic acid) (PANA) and humidity-sensitive composites derived from heat-treated PANA and poly(vinyl alcohol). 1999 J. Polym. Sci. A 37 4458.
[105] Ogura, K.; Saino, T.; Nakayama, M.; Shiigi, H. The humidity dependence of the electrical conductivity of a soluble polyaniline-poly(vinyl alcohol) composite film. 1997 J. Mater. Chem. 7 2363.
[106] Ogura, K.; Shiigi, H. A CO2 sensing composite film consisting of base-type polyaniline and poly(vinyl alcohol). Electrochem. 1999 Solid State Lett. 2 478.
[107] Ogura, K.; Shiigi, H.; Oho, T.; Tonosaki, T. A CO2 sensor with polymer composites operating at ordinary temperature. 2000 J. Electrochem. Soc. 147 4351.
[108] Hu, H.; Trejo, M.; Nicho, M.E.; Saniger, J.M.; Garcia-Valenzuela, A. Adsorption kinetics of optochemical NH3 gas sensing with semiconductor polyaniline films. 2002 Sens. Actuators B 82 14.
[109] Kim, J.S.; Sohn, S.O.; Huh, J.S. Fabrication and sensing behavior of PVF2 coated-polyaniline sensor for volatile organic compounds. 2005 Sens. Actuators B 108 409.
[110] Segal, E.; Tchoudakov, R.; Mironi-Harpaz, I.; Narkis, M.; Siegmann, A. Chemical sensing materials based on electrically-conductive immiscible polymer blends. 2005 Polym. Int. 54 1065.
[111] Cooper, H.; Segal, E.; Srebnik, S.; Tchoudakov, R.; Narkis, M.; Siegmann, A. Electrically conductive sensors for liquids based on quaternary ethylene vinyl acetate (EVA)/copolyamide/maleated-EVA/polyaniline blends. 2006 J. Appl. Polym. Sci. 101 110.
[112] Hong, K.H.; Oh, K.W.; Kang, T.J. Polyaniline-nylon 6 composite fabric for ammonia gas sensor. 2004 J. Appl. Polym. Sci. 92 37.
[113] Hao, Q.L.; Wang, X.; Lu, L.D.; Yang, X.J.; Mirsky, V.M. Electropolymerized multilayer conducting polymers with response to gaseous hydrogen chloride. 2005 Macromol. Rapid Commun. 26 1099.
[114] Sotzing, G.A.; Phend, J.N.; Grubbs, R.H.; Lewis, N.S. Highly sensitive detection and discrimination of biogenic amines utilizing arrays of polyaniline/carbon black composite vapor detectors. 2000 Chem. Mater. 12 593.
[115] Zhang, T.; Nix, M.B.; Yoo, B.Y.; Deshusses, M.A.; Myung, N.V. Electrochemically functionalized single-walled carbon nanotube gas sensor. 2006 Electroanalysis 18 1153.
[116] Ma, X.F.; Li, G.; Wang, M.; Cheng, Y.N.; Bai, R.; Chen, H.Z. Preparation of a nanowire-structured polyaniline composite and gas sensitivity studies. 2006 Chem. Eur. J. 12 3254.
[117] Porter, T.L.; Thompson, D.; Bradley, M.; Eastman, M.P.; Hagerman, M.E.; Attuso, J.L.; Votava, A.E.; Bain, E.D. Nanometer-scale structure of hectorite-aniline intercalates. 1997 Journal of Vacuum Science & Technology a-Vacuum Surfaces and Films 15 500.
[118] Conn, C.; Sestak, S.; Baker, A.T.; Unsworth, J. A polyaniline-based selective hydrogen sensor. 1998 Electroanalysis 10 1137.
[119] Conn, C.; Sestak, S.; Baker, A.T.; Unsworth, J. A polyaniline-based selective hydrogen sensor. 1998 Electroanalysis 10 1137.
[120] Ram, M.K.; Yavuz, O.; Aldissi, M. NO2 gas sensing based on ordered ultrathin films of conducting polymer and its nanocomposite. 2005 Synth. Met. 151 77.
[121] Wang, J.Z.; Matsubara, I.; Murayama, N.; Woosuck, S.; Izu, N. The preparation of polyaniline intercalated MoO3 thin film and its sensitivity to volatile organic compounds. 2006 Thin Solid Films 514 329.
[122] Virji, S.; Fowler, J.D.; Baker, C.O.; Huang, J.X.; Kaner, R.B.; Weiller, B.H. Polyaniline manofiber composites with metal salts: Chemical sensors for hydrogen sulfide. 2005 Small 1 624.
[123] Parvatikar, N.; Jain, S.; Bhoraskar, S.V.; Prasad, M. Spectroscopic and electrical properties of polyaniline/CeO2 composites and their application as humidity sensor. 2006 J. Appl. Polym. Sci. 102 5533.
[124] Sadek, A.Z.; Wlodarski, W.; Shin, K.; Kaner, R.B.; Kalantar-zadeh, K. A layered surface acoustic wave gas sensor based on a polyaniline/In2O3 nanofibre composite. 2006 Nanotechnology 17 4488.
[125] Do, J.S.; Chang, W.B. Amperometric nitrogen dioxide gas sensor: preparation of PAn/Au/SPE and sensing behaviour. 2001 Sens. Actuators B 72 101.
[126] Do, J.S.; Chang, W.B. Amperometric nitrogen dioxide gas sensor based on PAn/Au/Nafion prepared by constant current and cyclic voltammetry methods. 2004 Sens. Actuators B 101 97.
[127] Sharma, S.; Nirkhe, C.; Pethkar, S.; Athawale, A.A. Chloroform vapour sensor based on copper/polyaniline nanocomposite. 2002 Sens. Actuators B 85 131.
[128] Athawale, A.A.; Bhagwat, S.V.; Katre, P.P. Nanocomposite of Pd-polyaniline as a selective methanol sensor. 2006 Sens. Actuators B 114 263.
[129] Santhanam, K.S.V.; Sangoi, R.; Fuller, L. A chemical sensor for chloromethanes using a nanocomposite of multiwalled carbon nanotubes withpoly(3-methylthiophene). 2005 Sens. Actuators B 106 766.
[130] Torsi, L.; Pezzuto, M.; Siciliano, P.; Rella, R.; Sabbatini, L.; Valli, L.; Zambonin, P.G. Conducting polymers doped with metallic inclusions: New materials for gas sensors. 1998 Sens. Actuators B 48 362.
[131] Hwang, B.J.; Yang, J.Y.; Lin, C.W. A microscopic gas-sensing model for ethanol sensors based on conductive polymer composites from polypyrrole and poly(ethylene oxide). 1999 J. Electrochem. Soc. 146 1231.
[132] Milella, E.; Musio, F.; Alba, M.B. Polypyrrole LB multilayer sensitive films for odorants. Thin Solid Films 1996, 285, 908-910.
[133] Jun, H.K.; Hoh, Y.S.; Lee, B.S.; Lee, S.T.; Lim, J.O.; Lee, D.D.; Huh, J.S. Electrical properties of polypyrrole gas sensors fabricated under various pretreatment conditions. 2003 Sens. Actuators B 96 576.
[134] Reemts, J.; Parisi, J.; Schlettwein, D. Electrochemical growth of gas-sensitive polyaniline thin films across an insulating gap. 2004 Thin Solid Films 466 320.
[135] Kemp, N.T.; Kaiser, A.B.; Trodahl, H.J.; Chapman, B.; Buckley, R.G.; Partridge, A.C.; Foot, P.J.S. Effect of ammonia on the temperature-dependent conductivity and thermopower of polypyrrole. 2006 J. Polym. Sci. B 44 1331.
[136] Liu, D.M.; AguilarHernandez, J.; PotjeKamloth, K.; Liess, H.D. A new carbon monoxide sensor using a polypyrrole film grown on an interdigital-capacitor substrate. 1997 Sens. Actuators B 41 203.
[137] Hosono, K.; Matsubara, I.; Murayama, N.; Shin, W.; Izu, N. The sensitivity of 4-ethylbenzenesulfonic acid-doped plasma polymerized polypyrrole films to volatile organic compounds. 2005 Thin Solid Films 484 396.
[138] Bissell, R.A.; Persaud, K.C.; Travers, P. The influence of non-specific molecular partitioning of analytes on the electrical responses of conducting organic polymer gas sensors. 2002 Phys. Chem. Chem. Phys. 4 3482.
[139] Harris, P.D.; Arnold, W.M.; Andrews, M.K.; Partridge, A.C. Resistance characteristics of conducting polymer films used in gas sensors. 1997 Sens. Actuators B 42 177.
[140] Nitric Oxide in the NerVous System; Vincent, Steven R., Ed.; 1995 Academic Press: New York,.
[141] Richter-Addo, G. B.; Legzdins, P.; Burstyn, J. Chem. ReV. 2002 This entire issue deals with the chemistry of nitric oxide. 102 857
[142] Barry Weinberger, et al. 2001 TOXICOLOGICAL SCIENCES 59 5.
[143] National Institute for Occupational Safety and Health. 1976NIOSH criteriafor a recommended standard for occupational exposure to oxides of nitrogen (nitrogen dioxide and nitric oxide). United States Department of Health, Education, and Welfare, HEW Publication (NIOSH) 76±149, Washington, DC.
[144] Sokol, G. M., Van Meurs, K. P., Wright, L. L., Rivera, O., Thorn, W. J., III, Chu, P. M., and Sams, R. L. (1999). Nitrogen dioxide formation during inhaled nitric oxide therapy. Clin. Chem. 45, 382±387.
[145] Stamler, J.S. (1994) Redox signaling: nitrosylation and related targets interactions of nitric oxide, Cell 78 931.
[146] Leshesm, Y.Y. 1996 Nitric oxide in biological systems, Plant Growth Regul. 18 155.
[147] Laxalt, A.M., Beligni, M.V. and Lamattina, L. 1997 Nitric oxide preserves the level of chlorophyll in potato leaves infected by Phytophthora infestans, Eur. J. Plant Pathol. 73 643.
[148] De Leeuw DM, Simenon MMJ, Brown AR, Einerhand REF. 1997 Synth. Met. 87 53.
[149] Yijie Xia and Jianyong Ouyang, Significant Conductivity Enhancement of Conductive Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) Films through a Treatment with Organic Carboxylic Acids and Inorganic Acids. 2010 Appl. Mater. and interfaces 2 474.
[150] Sreeram Vaddiraju and Karen K Gleason, Selective sensing of volatile organic compounds using novel conducting polymer–metal nanoparticle hybrids 2010 Nanotechnology 21 125503
[151] Jie He, Zhongji Su, Binyu Yu, Li Xiang, Bin Yan, Yinghan Wang, Synthesis and characterization of copolythiophene 2007 J. of Appl. Polym. Sci. 105 6.
[152] Martin Dworkin, The Prokaryotes: Ecophysiology and biochemistry
[153] D. Hohnholz, A. G. MacDiarmid, D. M. Sarno, W. E. Jones, Chem. 2001 Commun. 2444.