
Molecular Crystals and Liquid Crystals p. 119 - 127 (2004)
Update date:2022-08-03
Topics:
Lee, Ju-Yeon
Lee, Won-Jung
Park, Eun-Ju
Bang, Han-Bae
Baek, Chang Suk
2,5-Di-(2′-hydroxyethoxy)-4′-nitrostilbene (2) was prepared and condensed with 2,4-toluenediisocyanate, 3,3′-dimethoxy-4,4′- biphenylenediisocyanate and 1,6-hexamethylenediisocyanate to yield novel T-type polyurethanes 3-5 containing the NLO-chromophore 2,5-dioxynitrostilbenyl group, which constitutes a part of the polymer backbone. Polymers 3-5 were soluble in common organic solvents such as acetone and DMSO. Polymers 3-5 showed a thermal stability up to 280°C in TGA thermograms with Tgs of 79-159°C in DSC thermograms. The SHG coefficients (d33) of poled polymer films were around 5.4 × 10-9 esu, and they exhibited greater thermal stabilities of dipole alignments even at 10°C higher than T g due to the partial main chain character of the polymer structure. Copyright Taylor & Francis Inc.
View MoreChemtrade International ( China )
Contact:+86-532-86893005
Address:Rm 2-501, Huaxia Zonghe Building, No. 410 JInggangshan Road, Huangdao
LABTER PARMATECH(BEIJING)CO.,LTD
website:http://www.labter.com.cn/
Contact:+86-10-56330744
Address:NO.19,TIANRONG STREET,DAXING BIOMEDICIAL BASE ,ZHONGGUANCUN SCIENCE AND TECHNOLOGY PARK,BEIJING ,CHINA
website:http://www.arromax.com
Contact:+86-0512-62959601 skype:aimmezhang
Address:Suite 401, Bldg A3, 218 Xinghu St.Suzhou Industrial Park 215123, P.R. China
AstaTech ( Chengdu) BioPharmaceutical Corp.
website:http://www.astabiochem.cn/
Contact:+86-15198215156-15198215156
Address:SICHUAN CHENGDU
Jiangxi Dongbang Pharmaceutical Co., Ltd.
Contact:+86-795-4433603, 4433388
Address:Fengxin Industrial Park, Fengxin County, Jiangxi Province, P.R.C
Doi:10.1016/S0957-4166(97)00398-4
(1997)Doi:10.1016/j.bmcl.2005.06.026
(2005)Doi:10.1021/acs.joc.7b00295
(2017)Doi:10.3797/scipharm.aut-05-08
(2005)Doi:10.1007/BF00923706
()Doi:10.1002/chem.201605218
(2017)