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Tricyanoethylene(TCNE) 폴리이미드의 합성과 특성 및 그의 광전도성 연구
이명훈 ( Myong Hoon Lee ),손상원 ( Sang Won Son ),문명준 ( Myung Jun Moon ),이상남 ( Sang Nam Lee ) 한국화상학회 2001 한국화상학회지 Vol.7 No.2
내열성이 우수하고 전기광학 효과가 뛰어난 것으로 알려진 tricyanoethenyl(TCNE) 계 폴리이미드를 합성하여 구조, 열적성질, 발색단의 치환율을 ^1H-NMR, IR, DSC, TGA, UV/vis 분광법 등으로 확인하였다. 또한 전자주게 그룹이 있는 폴리이미드의 aniline의 para위치에 강한 전자 받게 그룹인 TCNE를 각각 0, 70, 100 % 치환시킴으로써 전자 받게와 전자 주게 그룹 사이의 분자간 interaction에 기인한 charge-transfer complex를 통한 광전도성 여부를 확인하기 위하여 제조된 고분자를 Mylar film에 도포한 후 광전하생성과 광전하수송을 PIDC (photo-induced discharge curve) 법으로 조사하였다. 제조된 고분자는 TCNE 치환도에 따라 광전도성을 나타내었다. A series of tricyanoethenyl polyimides haying high thermal resistance and electro-optic effect was synthesized. Their structure, thermal properties and degree of substitution of tricyanoethenyl group was characterized by ^1H-NMR, FT-IR, DSC, TGA and UV/vis spectroscopic methods. These polyimides contained aminophenyl moiety as in electron donor, and tricyanoethenyl moiety at para-position as an electron acceptor. The photoconductivity based on the charge-transfer complex between the electron donor and acceptor was investigated by a photo-induced discharge current (PIDC) method. The photoconductivity was measured for the double layered cell of polymer film in contact with a layer of various charge transporting materials coated on a Mylar film by photo-induced discharge curve method. Depending on the degree of tricyanoethenylation, the polymers showed good photocnductivity.
Lithium 2차 전지용 고분자전해질의 개발 및 이온 전도 특성에 관한 연구
문명준,김희정,이서봉,이명훈 釜山工業大學校 1995 論文集 Vol.37 No.-
Ionic conductivities of PMMA-based polymer blends plasticized with poly (ethylene glycol) methyl ether(PEGMe) complexed with LiCLO4 have been investigated for applications in lithium battery. These solid polymer electrolytes are studied at room temperature using impedance analysis technique and FT-IR. Maximum ionic conductivity at room temperature was measured to be 5.9×10-5 S/cm in the free standing film state for PMMA concentratin of 17% w/w. The ionic conductivity decreases at higher PMMA concentration of 30% w/w, since the nonconducting area according to the phase separation of PMMA increases. The phase separation of PMMA in polymer electrolytes was shown by the absorbance variation of the carbonyl peak of PMMA.