ANISOTROPIC DISTORTION OF J-AGGREGATES AT DECREASING TEMPERATURE

Authors
DAEHNE L ENDRISS A IHRINGER J
Citation
L. Daehne et al., ANISOTROPIC DISTORTION OF J-AGGREGATES AT DECREASING TEMPERATURE, Chemical physics letters, 224(1-2), 1994, pp. 91-94
Citations number
16
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
224
Issue
1-2
Year of publication
1994
Pages
91 - 94
Database
ISI
SICI code
0009-2614(1994)224:1-2<91:ADOJAD>2.0.ZU;2-R
Abstract
Temperature-dependent X-ray diffraction exhibits that the J-aggregates in crystals of bis-(dimethylamino)-heptamethinium perchlorate contrac t unusually strong at low temperature. The intermolecular distance bet ween the dye cations is reduced from 354 pm at room temperature to 336 pm at 30 K. The results are an important due for the explanation of u nusual temperature dependence of collective phenomena of J-aggregates.