Localized exciton states in mu-conjugated polymers with finite torsion
Küçük Resim Yok
Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We investigate localized exciton states in pi-conjugated polymers with finite torsion. The localized states are associated with a perturbed transfer integral for which the magnitude of cosine of the torsion angle exceeds the magnitude of the corresponding cosine of the unperturbed system. The localized-state energy and spatial extent are calculated as a function of the ratio of the perturbed to unperturbed transfer integrals. Particular attention is paid to the optically active symmetric localized states, and the effective oscillator strength, or square of the absolute magnitude of the transition dipole moment, is calculated as a function of the energy. The relation of the theory to recent optical studies of poly(di-n-octylfluorene) (PF8) is discussed. (c) 2006 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
polymer, mu-conjugation, torsion, exciton, localized state
Kaynak
Journal of Luminescence
WoS Q Değeri
Q2
Scopus Q Değeri
Cilt
125
Sayı
01.Feb
