Bulletin of the Chemical Society of Japan p. 483 - 495 (1998)
Update date:2022-08-04
Topics:
Higuchi, Hiroyuki
Uraki, Yoshiyuki
Yokota, Hiroki
Koyama, Haruki
Ojima, Juro
Wada, Tatsuo
Sasabe, Hiroyuki
The unsymmetrically substituted bi- and quaterthiophene derivatives were synthesized. The unsymmetrically substituted bithiophenes carrying the electron-withdrawing substituent X on one of the outer thiophene rings exhibited the maxima of absorption bands at the longer wavelengths than the symmetrically disubstituted bithiophene derivatives, while the unsymmetrical quaterthiophenes had such maxima at the shorter wavelengths than the corresponding symmetrical ones. The trend of bathochromic shift of the longest wavelength absorption bands due to the electron-withdrawing substituent X was more pronounced in case of bi- or quaterthiophenes bearing push-pull substituents. The unsymmetrical quaterthiophenes exhibited the greater third-order nonlinear optical (TNLO) properties than the corresponding bithiophenes, similarly to the case between the symmetrical bi- and quaterthiophenes. However, the TNLO properties of the unsymmetrical biand quaterthiophenes showed no dependence on the electron-withdrawing strength of the substituent X, unlike those of the symmetrical ones.
View MoreContact:+86-519-86623222
Address:29F/D, 99 Yanling West Road, Changzhou, Jiangsu, China
Shanghai Demand Chemical Co., ltd,China
Contact:86-021-55237578/55239122
Address:Room 3H, No.578, Yingkou Road, Yangpu District, Shanghai, China
Hangzhou Mole's Science & Technology Co.,Ltd.
Contact:+86-571-56880228
Address:15F Guodu development Building, NO.182 Zhaohui Road
Contact:86 311 85902108 / 85902109
Address:room 1001-1005 ,huanghe Road ,shijiazhuang ,China
Jiacheng-Chem Enterprises Limited
Contact:86-571-86711508
Address:19 Floor, CIBC Holley International Building, No. 198,Wuxing Road, Hangzhou, China,310020
Doi:10.1002/cber.19961290318
(1996)Doi:10.1021/acs.orglett.8b02891
(2018)Doi:10.1016/0040-4039(96)00272-9
(1996)Doi:10.1246/bcsj.40.2904
(1967)Doi:10.1016/0277-5387(95)00458-0
(1996)Doi:10.1021/om950976y
(1996)