Molecular Crystals and Liquid Crystals p. 62 - 71 (2009)
Update date:2022-09-26
Topics:
Guo, Kunpeng
Chen, Yi
A class of naphthopyran derivatives (3a-10a) with electron-donating and electron-acceptor substituent is prepared by condensation of 1,2-diaryl-2-propyn-1-ol with -naphthol in the presence of pyridinium para-toluenesulfonate (PPTS) as catalyst. All compounds go ring-opening isomerization in polymethylmethacrylate (PMMA) matrix with UV light irradiation (30watt) and the maximum absorption of ring-opening isomers is at the range of 426-556nm. Ring-opening isomers are completely back to ring-closing isomers when samples are kept in darkness, the bleach rate of ring-opening isomers in PMMA film increased significantly when temperature is more than 45C. Fatigue testing showed that no significant change of optical density was detected after 10cycles.
View MoreCangzhou Senary Chemical Science-tech Co., Ltd
Contact:+86-317-3563899, 3563699
Address:168 Jinde Road, Cangzhou, Hebei, China
Engineering Research Center of Pesticide, Heilongjiang Province
Contact:+86-451-86609001
Address:No.74 of Xuefu Road, Nangang District,
Taixing Shenfeng Chemical Co., Ltd.
Contact:+86-523-87117033, 87117666
Address:4# Yinsanlu, Huangqiao town, Taixing, Jiangsu, China.
LABTER PARMATECH(BEIJING)CO.,LTD
Contact:+86-10-56330744
Address:NO.19,TIANRONG STREET,DAXING BIOMEDICIAL BASE ,ZHONGGUANCUN SCIENCE AND TECHNOLOGY PARK,BEIJING ,CHINA
WEIFANG RICHEM INTERNATIONAL LTD
Contact:86-536-2222176
Address:weifang,shandong
Doi:10.1021/ma1020903
(2010)Doi:10.1002/chem.201502848
(2015)Doi:10.1016/j.molstruc.2010.08.025
(2010)Doi:10.1080/00397911.2011.571806
(2012)Doi:10.1021/acs.orglett.5b02803
(2015)Doi:10.1016/j.tet.2013.05.087
(2013)