Raman excitation spectra of aggregate modes of 2,2′-cyanine
| Autor: | Daniel L. Akins, H.-R. Zhu, J. W. Macklin, L.A. Parker |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Chemistry
Stereochemistry Exciton Intermolecular force General Physics and Astronomy Stereoisomerism Molecular physics Condensed Matter::Soft Condensed Matter symbols.namesake chemistry.chemical_compound Intramolecular force Lattice (order) symbols Diffuse reflection Physics::Chemical Physics Physical and Theoretical Chemistry Cyanine Raman spectroscopy |
| Zdroj: | Chemical Physics Letters. 169:564-568 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/0009-2614(90)85648-v |
| Popis: | Room temperature Raman excitation spectra of two bands attributed to coupling of intramolecular modes of adsorbed, aggregated 2,2′-cyanine with intermolecular, lattice modes are interpreted in terms of resonances with two exciton states. The existence of two exciton states supports the view that two geometrical configurations exist in adsorbed, aggregated 2,2′-cyanine even though they are undetectable by absorption or emission spectroscopies. In addition, the association of the two configurational isomers is made with absorbances that occur in low-temperature glass systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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