Title

Excited-State Absorption And Anisotropy Properties Of Two-Photon Absorbing Fluorene Derivatives

Abstract

The electronic structure of fluorene derivatives N-(7-benzothiazol-2-yl-9,9-bis-decyl-9H-fluoren-2-yl)-acetamide (1); 9,9-didecyl-2,7-bis-(N,N-benzothiazoyl)fluorene (2); 4,4′-{[9,9-bis(ethyl)-9H-fluorene-2,7-diyl]di-2,1-ethenediyl}bis(N, N-diphenyl)benzeneamine(3); and4,4′,4″([9,9-bis(ethyl)-9H-fluorene-2,4,7-triyl]tri-2, 1-ethenediyl}tris(N,N-diphenyl)benzeneamine (4) were investigated by a steady-state spectral technique, quantum-chemical calculations, and a picosecond pump-probe method. These derivatives are of interest for their relatively high two-photon absorption. The steady-state excitation anisotropy spectra reveal the nature of the ground-state absorption bands. Semiempirical quantum-chemical calculations of the fluorene derivatives (AMI, ZINDO/S) show good agreement with experimental data. The spectral positions and alignment of various electronic transitions of derivatives 1-4 were estimated from their excited-state absorption and anisotropy spectra. © 2005 Optical Society of America.

Publication Date

11-20-2005

Publication Title

Applied Optics

Volume

44

Issue

33

Number of Pages

7232-7238

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.44.007232

Socpus ID

29144490561 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/29144490561

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