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Synthesis and Intermolecularly Mediated Assembly of Organic Pigment in Hybrid Coating Films

Published online by Cambridge University Press:  10 February 2011

Y. Yan ,
Z. Duan ,
D.-G. Chen  and
S. Ray Chaudhuri
Y. Yan
Affiliation:
YTC America Inc, 3401 Calle Tecate, Camarillo, CA 93012
Z. Duan
Affiliation:
YTC America Inc, 3401 Calle Tecate, Camarillo, CA 93012
D.-G. Chen
Affiliation:
YTC America Inc, 3401 Calle Tecate, Camarillo, CA 93012
S. Ray Chaudhuri
Affiliation:
YTC America Inc, 3401 Calle Tecate, Camarillo, CA 93012
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Abstract

The insoluble, strongly hydrogen bonded organic pigment of 3,6-bis-(4-chlorphenyl)-l,4- diketopyrrolo [3,4-c] pyrrole was transiently blocked by adding carbamate groups, and consequently incorporated into organic-inorganic hybrid matrices by a sol-gel process. The homo- (pigment-pigment) and hetero-intermolecular (pigment-matrix) interactions were found to control both the assembly and dispersion of pigment molecules in the hybrid coating films. A weaker interaction between matrices and pigment molecules results in aggregation of the carbamate pigment in the methyl-silicate films. A stronger interaction forms a homogenous dispersion and coloration of the phenyl-silicate films. The as-prepared methyl- and phenylsilicate films doped with the organic pigment were distinguished by a morphology change and a blue (hypsochromic) shift in absorption from 550 to 460 nm. Thermal treatment can remove the carbamate groups and in-situ form the organic pigment in the hybrid films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 519: Symposium O – Organic/Inorganic Hybrid Materials , 1998 , 103
Copyright
Copyright © Materials Research Society 1998

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