TY - JOUR
T1 - Systematic characterization of excited states in π -conjugated polymers
AU - Chandross, M.
AU - Shimoi, Y.
AU - Mazumdar, S.
N1 - Funding Information:
The authors acknowledge support from the NSF (ECS-9408810), the AFOSR and the ONR through the MURI center (CAMP) at the University of Arizona.
PY - 1997/11/28
Y1 - 1997/11/28
N2 - Exact finite chain calculations within a diagrammatic exciton basis give pictorial descriptions of all excited states of π-conjugated polymers. In linear chain polymers the 1Bu is an exciton, and the fundamental two-photon states can be broadly classified into triplet-triplet, charge-transfer and singlet-singlet excitations. The mAg, a two-photon state that plays a strong role in nonlinear optics, is a correlated charge-transfer state. The singlet-singlet states occur higher in energy and split into bound biexcitons and a continuum of free two-exciton states.
AB - Exact finite chain calculations within a diagrammatic exciton basis give pictorial descriptions of all excited states of π-conjugated polymers. In linear chain polymers the 1Bu is an exciton, and the fundamental two-photon states can be broadly classified into triplet-triplet, charge-transfer and singlet-singlet excitations. The mAg, a two-photon state that plays a strong role in nonlinear optics, is a correlated charge-transfer state. The singlet-singlet states occur higher in energy and split into bound biexcitons and a continuum of free two-exciton states.
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U2 - 10.1016/S0009-2614(97)01065-8
DO - 10.1016/S0009-2614(97)01065-8
M3 - Article
AN - SCOPUS:0038075625
SN - 0009-2614
VL - 280
SP - 85
EP - 90
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-2
ER -