Optical spectra and excitations in phenylene vinylene oligomers

H. S. Woo; O. Lhost; S. C. Graham; D. D.C. Bradley; R. H. Friend; C. Quattrocchi; J. L. Brédas; R. Schenk; K. Müllen

doi:10.1016/0379-6779(93)91153-S

Optical spectra and excitations in phenylene vinylene oligomers

H. S. Woo^*, O. Lhost, S. C. Graham, D. D.C. Bradley, R. H. Friend, C. Quattrocchi, J. L. Brédas, R. Schenk, K. Müllen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

170 Scopus citations

Abstract

Experimental results of optical absorption spectra, photoluminescence spectra due to singlet exciton emission and photoinduced absorption spectra due to triplet-triplet transitions of triplet excitons for several oligomers of poly(p-phenylene vinylene) are reported. From the red-shift of the peaks with increasing chain length, the effective conjugation length for long-chain precursor-route samples of the polymer are estimated to be about 10 to 17 repeat units. Theoretical studies, using the valence-effective Hamiltonian (VEH) technique, of the effects of ring torsions upon the electronic properties are also reported. Comparison between absorption and luminescence spectra in solution and in the solid state shows a blue-shift for the solution spectra; this is modelled in terms of a greater degree of ring torsion for these oligomers in solution.

Original language	English (US)
Pages (from-to)	13-28
Number of pages	16
Journal	Synthetic Metals
Volume	59
Issue number	1
DOIs	https://doi.org/10.1016/0379-6779(93)91153-S
State	Published - Jun 1993
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/0379-6779(93)91153-S

Cite this

@article{4a527ecd023a4a0db0f322fc44750ca3,

title = "Optical spectra and excitations in phenylene vinylene oligomers",

abstract = "Experimental results of optical absorption spectra, photoluminescence spectra due to singlet exciton emission and photoinduced absorption spectra due to triplet-triplet transitions of triplet excitons for several oligomers of poly(p-phenylene vinylene) are reported. From the red-shift of the peaks with increasing chain length, the effective conjugation length for long-chain precursor-route samples of the polymer are estimated to be about 10 to 17 repeat units. Theoretical studies, using the valence-effective Hamiltonian (VEH) technique, of the effects of ring torsions upon the electronic properties are also reported. Comparison between absorption and luminescence spectra in solution and in the solid state shows a blue-shift for the solution spectra; this is modelled in terms of a greater degree of ring torsion for these oligomers in solution.",

author = "Woo, {H. S.} and O. Lhost and Graham, {S. C.} and Bradley, {D. D.C.} and Friend, {R. H.} and C. Quattrocchi and Br{\'e}das, {J. L.} and R. Schenk and K. M{\"u}llen",

note = "Funding Information: nologies for Europe/European Advanced Materials), Contract 0148, Project NAPOLEO (Nouvelles Applications de Polym~res h l'Electronique et ~ l'Op-tique). The work in Mons has been partly supported by the Belgian 'P61e d'Attraction Interuniversitaire: Chimie Supramol6culaire et Catalyse'. The work in Cambridge has been partly supported by the Science and Engineering Research Council and British Petroleum PLC.",

year = "1993",

month = jun,

doi = "10.1016/0379-6779(93)91153-S",

language = "English (US)",

volume = "59",

pages = "13--28",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Optical spectra and excitations in phenylene vinylene oligomers

AU - Woo, H. S.

AU - Lhost, O.

AU - Graham, S. C.

AU - Bradley, D. D.C.

AU - Friend, R. H.

AU - Quattrocchi, C.

AU - Brédas, J. L.

AU - Schenk, R.

AU - Müllen, K.

N1 - Funding Information: nologies for Europe/European Advanced Materials), Contract 0148, Project NAPOLEO (Nouvelles Applications de Polym~res h l'Electronique et ~ l'Op-tique). The work in Mons has been partly supported by the Belgian 'P61e d'Attraction Interuniversitaire: Chimie Supramol6culaire et Catalyse'. The work in Cambridge has been partly supported by the Science and Engineering Research Council and British Petroleum PLC.

PY - 1993/6

Y1 - 1993/6

N2 - Experimental results of optical absorption spectra, photoluminescence spectra due to singlet exciton emission and photoinduced absorption spectra due to triplet-triplet transitions of triplet excitons for several oligomers of poly(p-phenylene vinylene) are reported. From the red-shift of the peaks with increasing chain length, the effective conjugation length for long-chain precursor-route samples of the polymer are estimated to be about 10 to 17 repeat units. Theoretical studies, using the valence-effective Hamiltonian (VEH) technique, of the effects of ring torsions upon the electronic properties are also reported. Comparison between absorption and luminescence spectra in solution and in the solid state shows a blue-shift for the solution spectra; this is modelled in terms of a greater degree of ring torsion for these oligomers in solution.

AB - Experimental results of optical absorption spectra, photoluminescence spectra due to singlet exciton emission and photoinduced absorption spectra due to triplet-triplet transitions of triplet excitons for several oligomers of poly(p-phenylene vinylene) are reported. From the red-shift of the peaks with increasing chain length, the effective conjugation length for long-chain precursor-route samples of the polymer are estimated to be about 10 to 17 repeat units. Theoretical studies, using the valence-effective Hamiltonian (VEH) technique, of the effects of ring torsions upon the electronic properties are also reported. Comparison between absorption and luminescence spectra in solution and in the solid state shows a blue-shift for the solution spectra; this is modelled in terms of a greater degree of ring torsion for these oligomers in solution.

UR - http://www.scopus.com/inward/record.url?scp=0027610014&partnerID=8YFLogxK

U2 - 10.1016/0379-6779(93)91153-S

DO - 10.1016/0379-6779(93)91153-S

M3 - Article

AN - SCOPUS:0027610014

SN - 0379-6779

VL - 59

SP - 13

EP - 28

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1

ER -

Optical spectra and excitations in phenylene vinylene oligomers

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this