TY - JOUR
T1 - Photophysical properties of bis(2,2′-bithiophene-5-yl)benzenes
AU - Sato, Tadatake
AU - Hori, Kiyotaka
AU - Fujitsuka, Mamoru
AU - Watanabe, Akira
AU - Ito, Osamu
AU - Tanaka, Kazuyoshi
PY - 1998/8/21
Y1 - 1998/8/21
N2 - The synthesis of three kinds of bis(2,2′-bithiophene-5-yl)benzenes (1,2-, 1,3- and 1,4-bis(2,2′-bithiophene-5-yl)benzene; o-PhBT2, m-PhBT2 and p-PhBT2) and analyses of their photophysical properties are reported. The electronic structures were also studied by the molecular orbital (MO) method. It was found that the extension of π-conjugation varies with the substitution mode (o-, m-, or p-), which in turn influences the absorption, fluorescence and transient absorption spectra. The unique behaviour of o-PhBT2 was interpreted in terms of its lowest unoccupied MO (LUMO) pattern, in which π-orbitals on the adjacent sulfur atoms in each bithienyl moiety can have considerable overlap.
AB - The synthesis of three kinds of bis(2,2′-bithiophene-5-yl)benzenes (1,2-, 1,3- and 1,4-bis(2,2′-bithiophene-5-yl)benzene; o-PhBT2, m-PhBT2 and p-PhBT2) and analyses of their photophysical properties are reported. The electronic structures were also studied by the molecular orbital (MO) method. It was found that the extension of π-conjugation varies with the substitution mode (o-, m-, or p-), which in turn influences the absorption, fluorescence and transient absorption spectra. The unique behaviour of o-PhBT2 was interpreted in terms of its lowest unoccupied MO (LUMO) pattern, in which π-orbitals on the adjacent sulfur atoms in each bithienyl moiety can have considerable overlap.
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U2 - 10.1039/a802514b
DO - 10.1039/a802514b
M3 - Article
AN - SCOPUS:33748598439
SN - 1463-9076
VL - 94
SP - 2355
EP - 2360
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 16
ER -