A study of the High Sensitive Nonsilver Halide Imaging Material( I ) - Purification of CuPc pigment by a train sublimation technique and preparation of CuPc pigment thin films and it's application for electrophotoconductor -

고감도 비은염 화상재료 개발연구( I ) - CuPc안료의 승화정제 및 전해석출법에 의한 CuPc 박막의 제작과 전자사진감광체에의 응용

It is well known that viologens such as 1.1 - disubstituted 4, 4` - bipyridinium salts and those used as redox indicator, herbicide and electrocheromic display device because those possess the lowest redox potential in any organic system. Viologen salts produced reversible high blue color under the influence of radical cation by photoreduction This study is related to the synthesis of viologen derivatives and the photoreduction property in water solution stats and the polar aprotic polyvinylpyrrolidone(PVP) matrix.