Dithienylethene, structurally system

A huge variety of 1,2-diheteroarylethenes undergo photochemical 67t-electrocyclization, and much of this literature, particularly that of the photochromic reactions of l,2-bis(methylthienyl)- and 1,2-bis(methylbenzothiophen-3-yl)-perfluorocyclopentenes, is reviewed elsewhere in this Handbook.However, examples of these systems are presented here to illustrate the diversity of the molecular architectures that undergo this type of photochemical process. A variety of compounds derived from the basic 1,2-dithienylethene structure (e.g., 45) undergo photochemical closure/ring opening in solution, films, and... 

Recently, a ternary complex for a signal transmission system has been constructed by Aida and his co-workers [36], It involved three movable components a biaryl derivative bearing four zinc porphyrins (2), a pyridine-appended dithienylethene derivative (1), and a chiral tetrasubstituted ferrocene (3 ), as illustrated by its structure (Scheme 8). The three components were interconnected with bidentate coordination bonds. Component 2 was the bridge between 1 and 3. The well-designed triad was built up by multi-step reactions through routine methods. 

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