Affordable Access

Publisher Website

Multicoordinational excited state twisting of indan-1,3-dione derivatives

Authors
Journal
Chemical Physics
0301-0104
Publisher
Elsevier
Publication Date
Volume
351
Identifiers
DOI: 10.1016/j.chemphys.2008.05.001
Keywords
  • Izomerization
  • Tict
  • Nonradiative Relaxation
  • Fluorescence
Disciplines
  • Physics

Abstract

Abstract Excited state relaxation of indan-1,3-dione derivatives with different substituents attached to the phenyl ring and with the bridged amino group was investigated by means of the steady-state fluorescence and femtosecond time-resolved absorption pump–probe spectroscopy. Bridging of the amino group increases the fluorescence quantum yield and the excited state lifetime. Analysis of the results indicates that the phenyl ring twisting around a single central bond leads to the nonradiative state formation and to subsequent fast relaxation to the ground state. Double bond twisting takes place in molecules with the bridged amino group and causes a large Stokes shift and slightly slower excited state relaxation.

There are no comments yet on this publication. Be the first to share your thoughts.