Interpretation of the ultrafast photoinduced processes in pentacene thin films

Thomas Scheby Kuhlman; Jacob Kongsted; Kurt V Mikkelsen; Klaus Braagaard Møller; Theis I Sølling

doi:10.1021/ja909166s

Interpretation of the ultrafast photoinduced processes in pentacene thin films

Thomas Scheby Kuhlman, Jacob Kongsted, Kurt V Mikkelsen, Klaus Braagaard Møller, Theis I Sølling

Kemisk Institut

49 Citationer (Scopus)

Abstract

Ambiguity remains in the models explaining the photoinduced dynamics in pentacene thin films as observed in pump-probe experiments. One model advocates exciton fission as governing the evolution of the initially excited species, whereas the other advocates the formation of an excimeric species subsequent to excitation. On the basis of calculations by a combined quantum mechanics and molecular mechanics (QM/MM) method and general considerations regarding the excited states of pentacene we propose an alternative, where the initially excited species instead undergoes internal conversion to a doubly excited exciton. The conjecture is supported by the observed photophysical properties of pentacene from both static as well as time-resolved experiments.

Originalsprog	Engelsk
Tidsskrift	Journal of the American Chemical Society
Vol/bind	132
Udgave nummer	10
Sider (fra-til)	3431-9
Antal sider	9
ISSN	0002-7863
DOI	https://doi.org/10.1021/ja909166s
Status	Udgivet - 17 mar. 2010

Adgang til dokumentet

10.1021/ja909166s

Citationsformater

@article{9ce1739ba6d3445ab5a015183ef75940,

title = "Interpretation of the ultrafast photoinduced processes in pentacene thin films",

abstract = "Ambiguity remains in the models explaining the photoinduced dynamics in pentacene thin films as observed in pump-probe experiments. One model advocates exciton fission as governing the evolution of the initially excited species, whereas the other advocates the formation of an excimeric species subsequent to excitation. On the basis of calculations by a combined quantum mechanics and molecular mechanics (QM/MM) method and general considerations regarding the excited states of pentacene we propose an alternative, where the initially excited species instead undergoes internal conversion to a doubly excited exciton. The conjecture is supported by the observed photophysical properties of pentacene from both static as well as time-resolved experiments.",

author = "Kuhlman, {Thomas Scheby} and Jacob Kongsted and Mikkelsen, {Kurt V} and M{\o}ller, {Klaus Braagaard} and S{\o}lling, {Theis I}",

year = "2010",

month = mar,

day = "17",

doi = "10.1021/ja909166s",

language = "English",

volume = "132",

pages = "3431--9",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "ACS Publications",

number = "10",

}

TY - JOUR

T1 - Interpretation of the ultrafast photoinduced processes in pentacene thin films

AU - Kuhlman, Thomas Scheby

AU - Kongsted, Jacob

AU - Mikkelsen, Kurt V

AU - Møller, Klaus Braagaard

AU - Sølling, Theis I

PY - 2010/3/17

Y1 - 2010/3/17

N2 - Ambiguity remains in the models explaining the photoinduced dynamics in pentacene thin films as observed in pump-probe experiments. One model advocates exciton fission as governing the evolution of the initially excited species, whereas the other advocates the formation of an excimeric species subsequent to excitation. On the basis of calculations by a combined quantum mechanics and molecular mechanics (QM/MM) method and general considerations regarding the excited states of pentacene we propose an alternative, where the initially excited species instead undergoes internal conversion to a doubly excited exciton. The conjecture is supported by the observed photophysical properties of pentacene from both static as well as time-resolved experiments.

AB - Ambiguity remains in the models explaining the photoinduced dynamics in pentacene thin films as observed in pump-probe experiments. One model advocates exciton fission as governing the evolution of the initially excited species, whereas the other advocates the formation of an excimeric species subsequent to excitation. On the basis of calculations by a combined quantum mechanics and molecular mechanics (QM/MM) method and general considerations regarding the excited states of pentacene we propose an alternative, where the initially excited species instead undergoes internal conversion to a doubly excited exciton. The conjecture is supported by the observed photophysical properties of pentacene from both static as well as time-resolved experiments.

U2 - 10.1021/ja909166s

DO - 10.1021/ja909166s

M3 - Journal article

C2 - 20175536

SN - 0002-7863

VL - 132

SP - 3431

EP - 3439

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 10

ER -

Interpretation of the ultrafast photoinduced processes in pentacene thin films

Abstract

Adgang til dokumentet

Fingeraftryk

Citationsformater