Chemical Research in Chinese Universities ›› 2009, Vol. 25 ›› Issue (5): 775-780.

• Research Notes • Previous Articles    

Synthesis and Non-linear Optical(NLO) Properties of a Series of Alkoxysilane Derivative Chromophores

SHI Zuo-sen, ZHANG Xiao-long, WANG Shi-wei, ZHAO Li-sha and CUI Zhan-chen*   

  1. Key Lab for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2008-07-23 Revised:2009-01-07 Online:2009-09-25 Published:2009-12-07
  • Contact: CUI Zhan-chen. E-mail: cuizc@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.50573023) and the Program for Changjiang Scholars and Innovative Research Team in University, China(No.IRTO422).

Abstract:

A series of chromophores based on benzene and thiophene moieties as π-conjugating spacers were synthesized and then reacted with 3-isocyanatopropyltriethoxysilane (ICTEOS) to give alkoxysilane functionalized chromophores for a sol-gel process. Their structures were confirmed by 1H NMR, FTIR, HPLC-Ms, UV-visible spectra, element analysis. The thermal properties were characterized by differential scanning calorimetry(DSC) and thermogravimetric analyzer (TGA), they all exhibit good thermal stabilities. Solvatochromic method was used to measure their nonlinear optical properties. The effect of variation of chromophoric structures on NLO properties was investigated, and it indicated that stronger electron-acceptor and longer conjugated bridges produces a considerable red-shift of the absorption maximum and would greatly enhance the molecular quadratic hyperpolarizability (βμ).

Key words: Thiophene; Solvatochromism; Alkoxysilane; Chromophore