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Synthesis of carbazole‐substituted poly(dimethylsiloxane) and its improved refractive index
Author(s) -
Nordin Norhuda Hidayah,
Ramli Mohamad Riduwan,
Othman Nadras,
Ahmad Zulkifli
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41654
Subject(s) - carbazole , materials science , polydimethylsiloxane , refractive index , polymer chemistry , vulcanization , fourier transform infrared spectroscopy , chemical engineering , spectroscopy , analytical chemistry (journal) , composite material , organic chemistry , chemistry , natural rubber , optoelectronics , physics , quantum mechanics , engineering
A series of substituted 9‐vinylcarbazole polysiloxane was synthesized followed by room temperature vulcanization to afford a crosslink network via trimethoxysilane crosslinker. Structural confirmation was made using FTIR, one and two‐dimensional 1 H‐ and 29 Si‐NMR spectroscopy. Quantitative estimation of the amount of substituted carbazole was made based on NMR data. These were related to the refractive index whose values were in the range of 1.4370–1.4625 at increasing carbazole content. These values are higher than uncrosslink series, attributable to the tightness of the systems. They displayed an improved thermo‐optic coefficient compared to linear unsubstituted polydimethylsiloxane (PDMS). The synergistic effect of substituted carbazole unit with the crosslink network of PDMS presents a viable choice of encapsulant for opto‐electronic devices. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41654.