Article ID Journal Published Year Pages File Type
177375 Dyes and Pigments 2010 5 Pages PDF
Abstract

A series of meso-polymethine-substituted 4,4-difluoro-4-bora-3a,4a-diaza-s-indacenes were synthesized based on the reaction of meso-methyl borondipyrromethene with a number of hemicyanine derivatives. The dyes obtained exhibited a weak short-wavelength absorption, a strong long-wavelength absorption and weak fluorescence. Upon protonation, the long-wavelength band disappeared while the intensity of the short-wavelength band increased markedly. The properties of the dyes were closely related to those merocyanine dyes rather than borondipyrromethenes.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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