TY - JOUR
T1 - Coherent and incoherent hopping of triplet exciton in quinoxaline-annelated and naphthalene-annelated dimers
AU - Tero-Kubota, Shozo
AU - Miyamoto, Tatsuya
AU - Akiyama, Kimio
AU - Ikegami, Yusaku
AU - Mataka, Shuntaro
AU - Tashiro, Masashi
PY - 1996/2/9
Y1 - 1996/2/9
N2 - Both a quinoxaline-annelated dimer and a naphthalene-annelated dimer showed excimer-type fluorescence spectra. Excimer-type phosphorescence was observed for the quinoxaline dimer, while the phosphorescence of the naphthalene dimer was not much different from that of the monomer type. In contrast, the EPR spectra clearly showed delocalization of the unpaired spins in the two chromophores for both molecules. The present results can be interpreted by the models of coherent supermolecule delocalization of the unpaired spins and incoherent hopping of triplet exciton for the quinoxaline and naphthalene dimers, respectively.
AB - Both a quinoxaline-annelated dimer and a naphthalene-annelated dimer showed excimer-type fluorescence spectra. Excimer-type phosphorescence was observed for the quinoxaline dimer, while the phosphorescence of the naphthalene dimer was not much different from that of the monomer type. In contrast, the EPR spectra clearly showed delocalization of the unpaired spins in the two chromophores for both molecules. The present results can be interpreted by the models of coherent supermolecule delocalization of the unpaired spins and incoherent hopping of triplet exciton for the quinoxaline and naphthalene dimers, respectively.
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U2 - 10.1016/0009-2614(95)01422-5
DO - 10.1016/0009-2614(95)01422-5
M3 - Article
AN - SCOPUS:0030576045
SN - 0009-2614
VL - 249
SP - 314
EP - 318
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5-6
ER -