TY - JOUR
T1 - A novel NLO azothiophene-based chromophore
T2 - Synthesis, characterization, thermal stability and optical nonlinearity
AU - Hao, Jumin
AU - Han, Mei Juan
AU - Guo, Kunpeng
AU - Zhao, Yuxia
AU - Qiu, Ling
AU - Shen, Yuquan
AU - Meng, Xiaoguang
PY - 2008/3/15
Y1 - 2008/3/15
N2 - This letter reports a new class of nonlinear optical (NLO) chromophores, of which 2-dicyanomethylen-3-cyano-4-{2-[2-(4-(N,N-di(2-hydroxyethyl)-amino)phenylazo)-thien-5]-E-vinyl}-5,5-dimethyl-2,5-dihydrofuran (2a) is the prototype with high thermal stability and large optical nonlinearity. Chromophore 2a was synthesized based on the azothiophene conjugated spacer and TCF electron-withdrawing acceptor, and characterized by IR, UV-Vis, MS and NMR spectra. A high decomposition temperature of 244 °C was determined by TGA measurement, and a first hyperpolarizability (zero-frequency hyperpolarizability, β0) as large as 800 × 10- 30 esu was estimated by HRS technology.
AB - This letter reports a new class of nonlinear optical (NLO) chromophores, of which 2-dicyanomethylen-3-cyano-4-{2-[2-(4-(N,N-di(2-hydroxyethyl)-amino)phenylazo)-thien-5]-E-vinyl}-5,5-dimethyl-2,5-dihydrofuran (2a) is the prototype with high thermal stability and large optical nonlinearity. Chromophore 2a was synthesized based on the azothiophene conjugated spacer and TCF electron-withdrawing acceptor, and characterized by IR, UV-Vis, MS and NMR spectra. A high decomposition temperature of 244 °C was determined by TGA measurement, and a first hyperpolarizability (zero-frequency hyperpolarizability, β0) as large as 800 × 10- 30 esu was estimated by HRS technology.
KW - Azothiophene chromophore
KW - First hyperpolarizability
KW - NLO materials
KW - Thermal stability
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U2 - 10.1016/j.matlet.2007.07.023
DO - 10.1016/j.matlet.2007.07.023
M3 - Article
AN - SCOPUS:37349116940
SN - 0167-577X
VL - 62
SP - 973
EP - 976
JO - Materials Letters
JF - Materials Letters
IS - 6-7
ER -