Unsymmetrical dyes derived from 7,8-dihydrobenzo[c,d]furo[2,3-f]indole

作者：Davydenko Iryna G^*; Kachkovsky Aleksei D; Dekhtyar Marina L; Slominskii Yurii L; Tolmachev Aleksei I

来源：Journal of Physical Organic Chemistry, 2010, 23(2): 96-104.

DOI：10.1002/poc.1582

• 7,8-Dihydrobenzo[c,d]furo [2,3-f]indole
• deviation
• electron-donor ability of heterocycles
• polymethine dyes
• styryl dyes

On the basis of the 7,8-dihydrobenzo[cdlfuro[2,3-flindole nucleus, a number of unsymmetrical carbocyanines as well as styryl dyes have been synthesized and their absorption spectra have been measured. Starting from the deviations of long-wavelength maxima, the value of electron-donor ability D has been estimated for the heterocycle under study and a number of dye end groups have been ranked by their electron-donor properties. Experimental inferences are supported by the quantum chemically calculated bond length alternations and energy levels for the dyes concerned.

• 出版日期2010-2