1.
Allergol Int
; 69(1): 161-162, 2020 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-31473136
2.
J Am Chem Soc
; 123(18): 4259-65, 2001 May 09.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11457192
RESUMO
A series of photophysical measurements and semiempirical calculations were carried out with 1,4-bis(phenylethynyl)benzene in search of evidence on the effects of phenyl group rotation and chromophore aggregation of oligo- and poly(phenyleneethynylene)s. It is suggested that planarization gives rise to relatively modest shifts of ca. 20-30 nm, which preserve the vibronic structure of the monomer and retain a high emission quantum yield. In contrast, it is proposed that aggregation gives rise to larger shifts and loss of vibronic structure.