Solid State Chemistry of Polymethines

U Schedler, J Bendig, L Dahne

Molecular crystals and liquid crystals science technology Section A, Molecular crystals and liquid crystals/Molecular crystals and liquid crystals science and technology Section A, Molecular crystals and liquid crystals（1995）

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摘要

The solid state chemistry of bis(dimethylamino) polymethine salts (n = 1,2,3,4) was investigated using thermogravimetry, difference thermal analysis, mass spectroscopy, UV/VIS spectroscopy and HPLC to analyze the extruded gaseous products and the residue.The observed pathway is nonamethine --> heptamethine --> pentamethine --> trimethine --> insoluble residue extruding dimethylamine and ethylene.The temperature of the strong exothermal process and the thermal behaviour in detail depend on the chain length, the anion and the crystal structure.

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关键词

polymethine dyes,solid state chemistry,thermal analysis

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