TY - JOUR
T1 - Photoinduced infrared absorptions from conjugated polymers with nondegenerate ground states
AU - Cha, Yun Hwan
AU - Furukawa, Yukio
AU - Tasumi, Mitsuo
AU - Noguchi, Takanobu
AU - Ohnishi, Toshihiro
N1 - Funding Information:
This work was partly supported by a grant from the Ogasawara Foundation for the Promotion of Science and Engineering.
PY - 1997/7/18
Y1 - 1997/7/18
N2 - Photoinduced infrared absorptions from poly( p-phenylene), poly( p-phenylenevinylene), poly(2,5-dioctyloxy-p-phenylenevinylene) and poly(2,5-thienylenevinylene) have been measured using the FT-IR difference-spectrum method. The observed photoinduced bands are attributable to photo-generated charged species which give rise to giant infrared intensities. The excitation-power dependences of the photoinduced absorption intensities can be explained by means of the bimolecular recombination of the positive and negative polarons that are formed from a polaron pair (interchain charge-transfer exciton) generated by photoirradiation.
AB - Photoinduced infrared absorptions from poly( p-phenylene), poly( p-phenylenevinylene), poly(2,5-dioctyloxy-p-phenylenevinylene) and poly(2,5-thienylenevinylene) have been measured using the FT-IR difference-spectrum method. The observed photoinduced bands are attributable to photo-generated charged species which give rise to giant infrared intensities. The excitation-power dependences of the photoinduced absorption intensities can be explained by means of the bimolecular recombination of the positive and negative polarons that are formed from a polaron pair (interchain charge-transfer exciton) generated by photoirradiation.
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U2 - 10.1016/S0009-2614(97)00595-2
DO - 10.1016/S0009-2614(97)00595-2
M3 - Article
AN - SCOPUS:0031577231
SN - 0009-2614
VL - 273
SP - 159
EP - 163
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -