JP5052760B2 - 導電材料の製造方法 - Google Patents
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Description
高分子の伝導度(σ)は、高分子中の移動可能なキャリア(電子)の密度(n)、キャリアの動き易さを示す移動度(μ)、および電子の電荷(e)の積として、次式(1)で表される。
サイトウ(Y.Saito)ら、ジャーナル・オブ・フォトケミストリー・アンド・フォトバイオロジー・エイ:ケミストリー(J.Photochem.Photobiol.A:Chem.)、2004年、第164巻、p.153 シバタ(Y.Shibata)ら、ケミカル・コミュニケーションズ(Chem.Commun.)、2003年、p.2730−2731
すなわち本発明は、π共役系高分子からなる材料を、アニオンとカチオンからなる塩であって、常温で液体としての性状を示すイオン液体と接触処理し、接触処理後の前記材料を洗浄して、過剰に付着したイオン液体を除去することにより、導電材料を製造し、前記導電材料の伝導度が、イオン液体と接触処理させる前のπ共役系高分子の伝導度の10倍以上であることを特徴とする導電材料の製造方法を提供する。
この製造方法においては、接触処理後の前記材料を有機溶媒で洗浄することも可能である。
またこの製造方法においては、前記導電膜のシート抵抗が、イオン液体と接触処理させる前のπ共役系高分子膜のシート抵抗の0.1倍以下であることも可能である。
またこの製造方法においては、前記洗浄後の導電膜の膜厚が、イオン液体と接触処理させる前のπ共役系高分子膜の膜厚より減少していることも可能である。
またこの製造方法においては、前記接触処理に用いるイオン液体が、添加物を添加したものであることも可能である。
イオン液体には、本発明の効果を阻害しない範囲で他の物質、例えばヨウ素などの添加物を添加することもできる。
膜厚(t)は、接触針式表面形状測定装置(Sloan社製、Dektak 3030)により測定した。
シート抵抗(ρs)は、JIS K 6911に準拠して、抵抗率計(ダイヤインスツルメンツ社製、ロレスターGP、MCP−T610型)に、4端子4探針PSP型プローブ(MCP−TP06P)を装備して測定した。
体積抵抗率(ρv)は、シート抵抗(ρs)と膜厚(t)との積として表される(すなわちρv=ρst)ので、伝導度(σ)は、上記測定方法によって測定した膜厚およびシート抵抗の測定値から、次式(2)により算出した。
π共役系高分子として市販のポリ(3,4−エチレンジオキシチオフェン)(PEDOT)とポリ(スチレンスルホン酸)(PSS)の塩(PEDOT/PSS)を用い、このPEDOT/PSSの水分散液(Aldrich製)を、酢酸セルロースフィルター(0.8μm)でろ過し、得られたろ液を10mm角のスライドガラス上にキャスト法により塗布した。得られた塗膜を室温で15分以上乾燥し、続いて85℃で15分以上熱処理することにより、導電膜として、PEDOT/PSS膜を得た。
この操作において、イオン液体HMImIは、PEDOTおよびPSSの酸化還元を起こさない電位を持っており、高分子膜のキャリア密度(n)の変化をもたらさない。
図1に、実施例1における膜厚およびシート抵抗の経時変化を示す。サンプル数は3とした。図1中、白丸は各サンプルの膜厚を、黒丸は膜厚の平均値を、白三角は各サンプルのシート抵抗を、黒三角はシート抵抗の平均値を、それぞれ示す。
なお、図1および表1の「時間」は、導電膜をイオン液体(HMImI)に浸漬し、85℃で保持した時間(すなわち処理時間)を表す。
イオン液体(HMImI)によるPEDOT/PSS膜の処理を行う処理温度を室温とし、浸漬の処理時間を6日間とした以外は実施例1に同様に浸漬処理を行い、イオン液体で処理する前および処理した後の導電膜の膜厚およびシート抵抗を測定した。PEDOT/PSS膜の製膜方法も実施例1に同様である。膜厚、シート抵抗、および伝導度の測定結果(サンプル数3個の平均値)を表2に示す。
イオン液体として、HMImI、ビス(トリフルオロメタンスルホン酸)イミド1−エチル−3−メチルイミダゾリウム(EMImTFSI)、あるいは、HMImIとヨウ素(I2)の10:1混合物を用い、イオン液体によるPEDOT/PSS膜の処理を行う処理温度を室温とし、浸漬の処理時間を40時間とした以外は実施例1に同様に浸漬処理を行い、イオン液体で処理する前および処理した後の導電膜のシート抵抗を測定した。PEDOT/PSS膜の製膜方法も実施例1に同様である。シート抵抗の測定結果(サンプル数1個の代表値)を表3に示す。
PEDOT/PSS膜の製膜をスピンコート法(2,500回転毎分、30秒)で行った。すなわち、上記PEDOT/PSSの水分散液(Aldrich製)を、酢酸セルロースフィルター(0.8μm)でろ過し、得られたろ液をガラス上にスピンコートした後、室温で15分以上乾燥し、続いて85℃で15分以上熱処理して、PEDOT/PSS膜を得た。この操作を3回繰り返して、膜厚0.24±0.04μmのPEDOT/PSS膜を作製した。なお、このスピンコート法による膜厚は、実施例1に示したキャスト成膜の場合に比べておよそ1/10である。
PEDOT/PSS膜の製膜を実施例4と同様にスピンコート法で行った。また、実施例4のイオン液体に代えて、水、アセトニトリル(AN)、エチレンカーボネート(EC)、あるいはトルエン(Toluene)を用いて浸漬処理を行う以外は実施例4と同様に浸漬処理(室温で1週間)を行い、イオン液体で処理する前および処理した後の導電膜のシート抵抗を測定した。シート抵抗の測定結果(サンプル数3個の平均値)を表5に示す。
PEDOT/PSS膜の成膜を実施例4と同様にスピンコート法で行った。また、実施例1のイオン液体に代えて、HMImI、EMImTFSI、あるいは過塩素酸リチウム(LiClO4)のアセトニトリル(AN)希薄溶液(濃度0.2mol/dm3)を用いて浸漬処理を行う以外は実施例1と同様に浸漬処理(85℃で5時間)を行い、イオン液体で処理する前および処理した後の導電膜のシート抵抗を測定した。シート抵抗の測定結果(サンプル数3個の平均値)を表6に示す。
Claims (8)
- π共役系高分子からなる材料を、アニオンとカチオンからなる塩であって、常温で液体としての性状を示すイオン液体と接触処理し、接触処理後の前記材料を洗浄して、過剰に付着したイオン液体を除去することにより、導電材料を製造し、前記導電材料の伝導度が、イオン液体と接触処理させる前のπ共役系高分子の伝導度の10倍以上であることを特徴とする導電材料の製造方法。
- 接触処理後の前記材料を有機溶媒で洗浄することを特徴とする請求項1に記載の導電材料の製造方法。
- 前記π共役系高分子からなる材料がπ共役系高分子膜であり、前記導電材料として導電膜を得ることを特徴とする請求項1または2に記載の導電材料の製造方法。
- 前記導電膜のシート抵抗が、イオン液体と接触処理させる前のπ共役系高分子膜のシート抵抗の0.1倍以下であることを特徴とする請求項3に記載の導電材料の製造方法。
- 前記洗浄後の導電膜の膜厚が、イオン液体と接触処理させる前のπ共役系高分子膜の膜厚より減少していることを特徴とする請求項3または4に記載の導電材料の製造方法。
- 前記接触処理が、前記材料をイオン液体中に浸漬する方法、前記材料にイオン液体を塗布する方法、または前記材料にイオン液体を噴霧する方法であることを特徴とする請求項1〜5のいずれか一項に記載の導電材料の製造方法。
- 前記接触処理に用いるイオン液体が、純粋なイオン液体であることを特徴とする請求項1〜6のいずれか一項に記載の導電材料の製造方法。
- 前記接触処理に用いるイオン液体が、添加物を添加したものであることを特徴とする請求項1〜6のいずれか一項に記載の導電材料の製造方法。
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Application Number | Priority Date | Filing Date | Title |
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JP2005129511A JP5052760B2 (ja) | 2005-04-27 | 2005-04-27 | 導電材料の製造方法 |
AU2006243103A AU2006243103B2 (en) | 2005-04-27 | 2006-04-05 | Conductive material and conductive film and process for producing them |
PCT/JP2006/307242 WO2006117967A1 (ja) | 2005-04-27 | 2006-04-05 | 導電材料および導電膜ならびにそれらの製造方法 |
CN2006800137402A CN101164122B (zh) | 2005-04-27 | 2006-04-05 | 导电材料、导电膜及它们的制造方法 |
KR1020077024636A KR20080009697A (ko) | 2005-04-27 | 2006-04-05 | 도전 재료 및 도전막 및 그 제조방법 |
US11/910,571 US7842197B2 (en) | 2005-04-27 | 2006-04-05 | Conductive material, conductive film, and production method thereof |
EP06731190A EP1876607A4 (en) | 2005-04-27 | 2006-04-05 | CONDUCTIVE MATERIAL AND CONDUCTIVE FILM AND MANUFACTURING PROCESS THEREFOR |
TW095114193A TWI328234B (en) | 2005-04-27 | 2006-04-20 | Conductive material and conductive film, and method for manufacturing the same |
US12/860,577 US20100317806A1 (en) | 2005-04-27 | 2010-08-20 | Conductive material, conductive film, and production method thereof |
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EP (1) | EP1876607A4 (ja) |
JP (1) | JP5052760B2 (ja) |
KR (1) | KR20080009697A (ja) |
CN (1) | CN101164122B (ja) |
AU (1) | AU2006243103B2 (ja) |
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JP4996505B2 (ja) * | 2008-02-28 | 2012-08-08 | 日本航空電子工業株式会社 | 導電性組成物ならびにこれを用いて得られる導電膜および半導体 |
US8922435B2 (en) * | 2009-04-27 | 2014-12-30 | Drexel University | Transparent conformal polymer antennas for RFID and other wireless communications applications |
JP5918236B2 (ja) | 2010-08-20 | 2016-05-18 | ロディア オペレーションズRhodia Operations | ポリマー組成物、ポリマーフィルム、ポリマーゲル、ポリマーフォーム、並びに当該フィルム、ゲル及びフォームを含有する電子デバイス |
JP5925423B2 (ja) * | 2011-03-31 | 2016-05-25 | 日本航空電子工業株式会社 | 電極酸化防止有機デバイスおよびその製造方法 |
EP2722366B1 (en) * | 2011-06-17 | 2023-01-04 | LG Chem, Ltd. | Curable composition |
CN102544636A (zh) * | 2012-01-06 | 2012-07-04 | 中国科学院过程工程研究所 | 一种用于锌空气电池的碱性离子液体电解液 |
WO2015088999A1 (en) * | 2013-12-11 | 2015-06-18 | Rhodia Operations | Polymer compositions, films, gels, and foams containing sulfonylimide salts, and electronic devices containing such films, gels, and foams |
WO2017085796A1 (ja) * | 2015-11-17 | 2017-05-26 | 株式会社アロマビット | 匂いセンサおよび匂い測定システム |
US11499007B2 (en) * | 2016-01-15 | 2022-11-15 | The Board Of Trustees Of The Leland Stanford Junior University | Highly stretchable, transparent, and conductive polymer |
CN108269644A (zh) * | 2017-01-04 | 2018-07-10 | 北京赛特超润界面科技有限公司 | 一种金属纳米线@离子液体凝胶复合柔性透明电极的制备方法 |
CN111129329A (zh) * | 2019-12-26 | 2020-05-08 | Tcl华星光电技术有限公司 | 发光电化学池及电致发光显示装置 |
KR102593821B1 (ko) * | 2021-05-12 | 2023-10-26 | 이화여자대학교 산학협력단 | 개질된 전도성 고분자를 포함하는 신축성 전극 및 이를 포함하는 센서 |
CN116693908A (zh) * | 2023-07-26 | 2023-09-05 | 浙江大学 | 一种高电导率的pedot:pss薄膜及其制备方法 |
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DE3438390A1 (de) * | 1984-10-19 | 1986-04-24 | Basf Ag, 6700 Ludwigshafen | Verwendung von elektrisch leitfaehigen polymerisaten zur absorption von infrarotstrahlung |
JPH01296572A (ja) * | 1988-05-24 | 1989-11-29 | Tosoh Corp | 電池 |
DE4317010A1 (de) * | 1993-05-17 | 1994-11-24 | Zipperling Kessler & Co | Dispergierbares intrinsisch leitfähiges Polymer und Verfahren zu dessen Herstellung |
US5840214A (en) * | 1996-07-26 | 1998-11-24 | Monsanto Company | Method of increasing polyaniline conductivity with ionic surfactants |
SE512579C2 (sv) | 1998-07-09 | 2000-04-03 | Forskarpatent I Linkoeping Ab | Polymer gel-elektrod, samt förfarande för dess framställning |
AU4937300A (en) | 1999-06-09 | 2000-12-28 | Cambridge Display Technology Limited | Method of producing organic light-emissive devices |
WO2001047045A1 (en) | 1999-12-21 | 2001-06-28 | Plastic Logic Limited | Solution processing |
KR20040014444A (ko) * | 2000-12-23 | 2004-02-14 | 웬 루 | 이온성 액체를 구비한 긴 수명 공명 폴리머 전기화학 장치 |
CN100382212C (zh) * | 2001-04-13 | 2008-04-16 | 三洋化成工业株式会社 | 电解电容器 |
JP4070004B2 (ja) * | 2001-04-13 | 2008-04-02 | 三洋化成工業株式会社 | 電解コンデンサ |
JP4014418B2 (ja) * | 2002-02-14 | 2007-11-28 | セントラル硝子株式会社 | 電気化学ディバイス |
CN1659243A (zh) * | 2002-06-14 | 2005-08-24 | 西门子公司 | 用于生产有机导电功能层的材料及其应用 |
JP2005051949A (ja) * | 2003-07-30 | 2005-02-24 | Matsushita Electric Ind Co Ltd | アクチュエータ及びそれを用いた関節駆動機構 |
ES2329898T3 (es) * | 2003-10-17 | 2009-12-02 | H.C. Starck Gmbh | Condensadores electroliticos con capa externa de polimero. |
US20080139710A1 (en) * | 2004-11-01 | 2008-06-12 | Kaneka Corporation | Conductive Composition, Conductive Molded Body and Conductive Gel Composition, and Method for Producing the Same |
US7626748B2 (en) * | 2005-03-01 | 2009-12-01 | Bijan Radmard | Gel polymers containing ionic liquids |
US7438832B2 (en) * | 2005-03-29 | 2008-10-21 | Eastman Kodak Company | Ionic liquid and electronically conductive polymer mixtures |
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AU2006243103B2 (en) | 2011-07-07 |
US20090152503A1 (en) | 2009-06-18 |
EP1876607A1 (en) | 2008-01-09 |
TWI328234B (en) | 2010-08-01 |
TW200707464A (en) | 2007-02-16 |
US7842197B2 (en) | 2010-11-30 |
EP1876607A4 (en) | 2009-07-15 |
CN101164122B (zh) | 2011-10-26 |
AU2006243103A1 (en) | 2006-11-09 |
CN101164122A (zh) | 2008-04-16 |
WO2006117967A1 (ja) | 2006-11-09 |
US20100317806A1 (en) | 2010-12-16 |
KR20080009697A (ko) | 2008-01-29 |
JP2006306957A (ja) | 2006-11-09 |
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