TY - JOUR
T1 - Photoinduced energy and electron transfer in rubrene-benzoquinone and rubrene-porphyrin systems
AU - Khan, Jafar Iqbal
AU - Abbas, Abdullah Saud
AU - Aly, Shawkat Mohammede
AU - Usman, Anwar
AU - Melnikov, Vasily
AU - Alarousu, Erkki
AU - Mohammed, Omar F.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Shawkat M. Aly is grateful for the post-doctoral fellowship provided by Saudi Basic Industries Corporation (SABIC). The work reported herein was supported by the King Abdullah University of Science and Technology.
PY - 2014/11
Y1 - 2014/11
N2 - Excited-state electron and energy transfer from singlet excited rubrene (Ru) to benzoquinone (BQ) and tetra-(4-aminophenyl) porphyrin (TAPP) were investigated by steady-state absorption and emission, time-resolved transient absorption, and femtosecond (fs)-nanosecond (ns) fluorescence spectroscopy. The low reduction potential of BQ provides the high probability of electron transfer from the excited Ru to BQ. Steady-state and time-resolved results confirm such an excited electron transfer scenario. On the other hand, strong spectral overlap between the emission of Ru and absorption of TAPP suggests that energy transfer is a possible deactivation pathway of the Ru excited state.
AB - Excited-state electron and energy transfer from singlet excited rubrene (Ru) to benzoquinone (BQ) and tetra-(4-aminophenyl) porphyrin (TAPP) were investigated by steady-state absorption and emission, time-resolved transient absorption, and femtosecond (fs)-nanosecond (ns) fluorescence spectroscopy. The low reduction potential of BQ provides the high probability of electron transfer from the excited Ru to BQ. Steady-state and time-resolved results confirm such an excited electron transfer scenario. On the other hand, strong spectral overlap between the emission of Ru and absorption of TAPP suggests that energy transfer is a possible deactivation pathway of the Ru excited state.
UR - http://hdl.handle.net/10754/563832
UR - https://linkinghub.elsevier.com/retrieve/pii/S0009261414009002
UR - http://www.scopus.com/inward/record.url?scp=84911467750&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2014.10.047
DO - 10.1016/j.cplett.2014.10.047
M3 - Article
SN - 0009-2614
VL - 616-617
SP - 237
EP - 242
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -