منابع مشابه
Aqueous solubilization of photochromic compounds by bile salt aggregates.
Bile salts form aggregates in aqueous solutions which were shown to efficiently solubilize aqueous insoluble photochromic compounds. Photochromic switching was observed for a spiropyran and a diarylethene. In the case of the spiropyran, the incorporation into the bile salt aggregate led to improved hydrolytic stability and changes in thermal rate constants.
متن کاملPhotoelectrocatalysis to improve cycloreversion quantum yields of photochromic dithienylethene compounds.
An open and shut case: photoirradiation of the 9-mesityl-10-methylacridinium ion, which acts as a photoredox catalyst, evoked catalytic cycloreversion of the photochromic 1,2-dithienylethene (DTE) compounds with one order of magnitude enhancement in quantum yields. Mechanistic studies revealed that the back electron transfer and electron transfer from the neutral closed form of DTE compounds to...
متن کاملSteric and electronic influence on photochromic switching of N,C-chelate four-coordinate organoboron compounds.
A four-coordinate organoboron compound B(ppy)Mes(2) (1, ppy=2-phenylpyridyl, Mes=mesityl) was previously found to undergo reversible photochromic switching through the formation/breaking of a C-C bond, accompanied by a dramatic color change from colorless to dark blue. To understand this unusual phenomenon, a series of new four-coordinate boron compounds based on the ppy-chelate ligand and its ...
متن کاملNew Photochromic Materials
The aim of this work was the synthesis and study of photochromic compounds with new properties. Five dithienylethene type compounds (1a-3a and 1b-2b) were synthesized and studied. They can reversibly interconvert between two thermally stable forms, an open and a closed one, by using light of different wavelengths as triggers. Compounds 2 and 3 represent oligothiophenes endowed with a photoactiv...
متن کاملA new photochromic tetrahydroindolizine.
The title compound, dimethyl 10b'-(4-fluorostyryl)-8',9'-dimethoxy-4-nitro-5',6'-dihydrospiro[9H-fluorene-9,1'(10b'H)-pyrrolo[2,1-a]isoquinoline]-2',3'-dicarboxylate, C38H31FN2O8, is a new photochromic tetrahydroindolizine. One of the C-C bonds at the spiro C atom is very long [1.630 (2) A], thus explaining the photochromic behaviour.
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Colour Material
سال: 1969
ISSN: 0010-180X
DOI: 10.4011/shikizai1937.42.419