- Control of the J-Aggregation Phenomenon by Variation of the N-Alkyl-Substituents
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Cyanine dyes (1a-d) with the 5,5',6,6'-tetrachloro-1,1'-dialkyl-3,3'-di-(3-carboxypropyl)-benzimidocarbocyanine chromophore differing only in the chain length of their alkyl groups in 1,1'position have been synthesized spectroscopically characterized, and compared with 5,5',6,6'-tetrachloro-1,1'-diethyl-3,3'-di-(4-sulfobutyl)-benzimidocarbocyanine (TDBC).In aqueous solution the dyes form J-aggregates which, depending on the alkyl group chain length, exhibit J-bands differing in spectral position, bandwidth, and in the number of peaks.
- Rossi, Umberto De,Moll, Johannes,Spieles, Monika,Bach, Guenther,Daehne, Siegfried,et al.
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p. 203 - 208
(2007/10/02)
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