Journal of the American Chemical Society p. 1869 - 1874 (1985)
Update date:2022-08-03
Topics:
Ferguson, James
Puza, Miroslav
Robbins, Raymond J.
The effects of interchromophore interaction on the energy levels of two different polyacene chromophores (anthracene and naphthalene) have been determined.Two new coupled-chromophore compounds were used for the study, 1,2,3,4-tetrahydro-<2.3>(9,10)-anthracenophane (V) and 1-(9-anthryl)-3-(1',2',3',4'-tetrahydro-9'-anthryl)propane (III).Polarized absorption spectra of V and III, the latter obtained in a face-to-face conformation by photocleavage of its photoisomer, were observed as guests in the single crystal host material 1,3-di(9-anthryl)propane photoisomer (cycloadduct, DAPC).V was also studied by fluorescence polarization methods in a rigid hydrocarbon glass.These measurements have unambiguously detected the presence of two interchromophore charge-transfer bands at 33000 and 37000 cm-1, the lower of which is likely to be from anthracene to naphthalene.The 1La and 1Lb states of each chromophore are appreciably shifted to low energy by the face-to-face interaction between the two ?-electron systems, but the two 1B states are merged into one state in the phane.The spectrum of V does not require consideration of "through-bond" interactions between the two chromophores, and the important interactions are "through-space" in nature.Fluorescence is observed from V at low temperatures, but this is quenched at room temperature with the formation of the photoisomer.Ultraviolet irradation of the latter gives rise to electronically excited product fluorescence identical with that from V.Fluorescence from V has been assigned to a mixture of localized 1La and 1Lb states of the anthracene chromophore.
View MoreWeifang Ocean Trading Co., Ltd.
Contact:+86-536-2081155
Address:Room2606, Yuqing Building, 518#, Yuquan Road, High-tech Development Zone, Weifang City, Shandong Province, China
Chengdu Pukang Biotechnology Co., Ltd
Contact:+86-28-82550498
Address:No. 558 Rulin Road,Xinjin county,Chengdu city, China
Qingdao Pana-Life Biochem Co.,Ltd.
Contact:86-532-87683902
Address:No.967 Dalao Road, Licang Zone, Qingdao City,Shandong, China 266021
website:http://www.eastarchem.com/
Contact:1-800-898-2436
Address:1215 K Street, STE 1700
SHOUGUANG BOYU CHEMICAL CO.,LTD
Contact:+86-536-8256719
Address:ROOM 1101&1103,BUILDING D,ZHONGTU MANSION,NO.6565 EAST FUSHOU STREET,WEIFANG CITY,SHANDONG,CHINA.
Doi:10.1002/chem.201705797
(2018)Doi:10.1016/j.tetasy.2008.05.034
(2008)Doi:10.1016/S0022-328X(00)00766-X
(2001)Doi:10.1021/jo071074x
(2007)Doi:10.1134/S1070363207020223
(2007)Doi:10.1016/j.tetlet.2007.06.151
(2007)