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The chameleon dye 1,7‐bis(dimethylamino)heptamethine
Author(s) -
Dähne Lars,
Horvath Arpad,
Weiser Gerhard,
Reck Günter
Publication year - 1996
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19960080606
Subject(s) - molecule , materials science , counterion , crystallography , photochemistry , chemical physics , ion , organic chemistry , chemistry
The influence of the alignment and density of dye molecules on the spectroscopic properties of aggregates can be studied particularly well in J‐aggregates of 1,7‐bis(dimethylamino)heptamethine (BDH ⊕ ). Four different arrangements of BDH⊕ molecules can be obtained without changing the molecular structure simply by using different counterions. The relationship between structure and linear spectroscopic properties—including the color of crystals containing BDH⊕–is discussed.