Towards multifold cycloswitching of biphotochromes:: investigation on a bond-fused dihydroazulene/vinylheptafulvene and dithienylethene/dihydrothienobenzothiophene

被引：33

作者：

Mrozek, T

Görner, H

Daub, J

机构：

[1] Univ Regensburg, Inst Organ Chem, D-93040 Regensburg, Germany

[2] Max Planck Inst Strahlenchem, D-45413 Mulheim, Germany

来源：

CHEMICAL COMMUNICATIONS | 1999年 / 16期

关键词：

D O I：

10.1039/a903060c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The concept of molecular switching within a cyclic four-stage process is introduced on the basis of two structurally fused photochromic systems (A-D). The synthesis of 1,8a-dihydro-2,3-bis(2,5-dimethyl-3-thienyl)azulene-1,1-dicarbonitrile (open/closed A) is described; irradiation with UV light leads to an equilibrium of open/open B, open/closed A and closed/closed C, whereas B is thermally rearranged to A by ring closure of the vinylheptafulvene substructure.

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收藏

页码：1487 / 1488

页数：2

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