2ND-ORDER POLARIZABILITY OF DONOR-ACCEPTOR SUBSTITUTED OLIGOTHIOPHENES - SUBSTITUENT VARIATION AND CONJUGATION LENGTH DEPENDENCE

Authors
WURTHNER F EFFENBERGER F WORTMANN R KRAMER P
Citation
F. Wurthner et al., 2ND-ORDER POLARIZABILITY OF DONOR-ACCEPTOR SUBSTITUTED OLIGOTHIOPHENES - SUBSTITUENT VARIATION AND CONJUGATION LENGTH DEPENDENCE, Chemical physics, 173(2), 1993, pp. 305-314
Citations number
47
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics → ACNP
ISSN journal
03010104
Volume
173
Issue
2
Year of publication
1993
Pages
305 - 314
Database
ISI
SICI code
0301-0104(1993)173:2<305:2PODSO>2.0.ZU;2-R
Abstract
Second-order polarizabilities and excited state dipole moments of a nu mber of donor-acceptor substituted alpha-oligothiophenes have been inv estigated by use of electric field induced second harmonic generation (EFISH), solvatochromism and electrooptical absorption measurements (E OAM). The experimental results reveal that oligothiophenes are very ef fective conjugation units offering substantial enhancement of the seco nd-order polarizability with increasing chain length.