Study on the Photochemical Properties of Chain Linked Bis(Phenyloxadiazoly)ethenes

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Abstract n bis[trans 4 [2 [2 (5 pheny1 1,3,4 oxadiazoly)]etheny1]phenoxy]alkanes ( n =3,4,6),2,2′ bis[trans 4 [2 [2 (5 pheny1-1,3,4 oxadiazoly)]etheny1] phenoxy]ethy1 ether (D) and their model compound trans 4 [2 [2 (5 pheny1-1,3,4 oxadiazoly)]etheny1]anisole (E) were synthesized. Their structures were identified by elemental analysis, IR, UV, 1H NMR, 13 C NMR and MS. UV spectra were used to illustrate their photochemical properties under the irradiation of high pressure mercury lamp. It was found that A D undergo two kinds of reactions, the trans cis isomerization and (2+2) intramolecular photodimerization. The former is fast and reversible, but the later is slow and irreversible. The intramolecular photodimers of A D can photolysis easily under the irradiation of low pressure mercury lamp. Furthermore, The reversible reaction between the intramolecular photodimerization of A D and the photolysis of the formed dimers can undergo many times with high reproducibility which indicates that these sort of compounds have potential utilization in the field of photo info memory.

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Received 2001-01-15; published 2001-01-15

Cite this article:

ZHUANG Jun peng, WANG Shu li, ZHENG Yan, ZHAO Shu na, ZHANG Wen qin .Study on the Photochemical Properties of Chain Linked Bis(Phenyloxadiazoly)ethenes[J] Chemcial Industry and Engineering, 2001,V18(1): 1-7

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