๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Temperature dependence of superradiant emission of BIC J-aggregates

โœ Scribed by Valey F. Kamalov; Irina A. Struganova; Tadaaki Tani; Keitaro Yoshihara


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
418 KB
Volume
220
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

โœฆ Synopsis


The emission lifetime of the carbocyanine BIC J-aggregate decreased with the increase of the temperature in the range 20-60 K. Several mechanisms are proposed to explain the nonradiative relaxation of the J-aggregate observed in glass.


๐Ÿ“œ SIMILAR VOLUMES


Two-exciton emission of BIC J-aggregates
โœ Valey F. Kamalov; Irina A. Struganova; Yasushi Koyama; Keitaro Yoshihara ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 336 KB

We observed a blue-shift and narrowing of emission band of carbocyanine dye (BIC) J-aggregate in solution at high excitation intensity. This is explained by formation of a two-exciton state and efficient emission from the two-exciton to one-exciton state. The lifetime of the two-exciton state of BIC

Time-resolved emission spectra of the BI
โœ Valey F. Kamalov; Irina A. Struganova; Keitaro Yoshihara ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 456 KB

A red-shift and broadening of the emission of the BIC J-aggregate in glass were observed at low temperatures (4.5 K). To explain the observation a transformation of the excess excitation energy in the bath with disordering of the structure of molecular aggregate is proposed. The characteristic time

Anisotropic distortion of J-aggregates a
โœ L. Daehne; A. Endriss; J. Ihringer ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 197 KB

Temperature-dependent X-ray diffraction exhibits that the J-aggregates in crystals of bis-(dimethylamino)-heptamethinium perchlorate contract unusually strong at low temperature. The intermolecular distance between the dye cations is reduced from 354 pm at room temperature to 336 pm at 30 IC The res