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Exciton band structures in 2D aggregates of cyanine dyes
Author(s) -
Kirstein Stefan,
Möhwald Helmuth
Publication year - 1995
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.19950070509
Subject(s) - cyanine , exciton , materials science , fluorescence , molecule , dipole , orientation (vector space) , j aggregate , transition dipole moment , oscillation (cell signaling) , molecular physics , chemical physics , optics , condensed matter physics , physics , chemistry , geometry , biochemistry , mathematics , quantum mechanics
Herring‐bone structures (see figure, where the rectangles are the dye molecules and the arrows indicate the oscillation of the transition dipoles) can be classified on the basis of the angle of mutual orientation of the two molecules per unit cell. Those with small angles showing nearly resonant fluorescence emission from the most redshifted transition (J‐aggregates).