Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
177375 | Dyes and Pigments | 2010 | 5 Pages |
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.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Viktor P. Yakubovskyi, Mykola P. Shandura, Yuriy P. Kovtun,