TY - JOUR
AU - Nicolet, Olivier
AU - Vauthey, Eric
TI - Non-equilibrium charge recombination dynamics of excited donor-acceptor complexes
PY - 2002
JF - Trends in Optics and Photonics
JA - Trends Opt. Photonics
SN - 1094-5695
VL - 72
SP - 78
EP - 79
ID - 499
ER -

TY - JOUR
AU - Morandeira, A.
AU - Fürstenberg, A.
AU - Nicolet, O.
AU - Pagès, S.
AU - Lang, B.
AU - Vauthey, E.
TI - Ultrafast Photochemistry
PY - 2002
JF - Chimia
JA - Chimia
SN - 0009-4293
VL - 56
IS - 12
SP - 690
EP - 694
L1 - http://www.ingentaconnect.com/search/download?pub=infobike%3a%2f%2fscs%2fchimia%2f2002%2f00000056%2f00000012%2fart00007&mimetype=application%2fpdf&exitTargetId=1184069788267
L3 - http://www.ingentaconnect.com/content/scs/chimia/2002/00000056/00000012/art00007
M3 - 10.2533/000942902777679849
UR - http://dx.doi.org/10.2533/000942902777679849
KW - photoinduced electron transfer
KW - solvation dynamics
KW - ultrafast processes
KW - upper excited states
KW - vibrational relaxation
N2 - Several aspects of ultrafast photochemistry in the condensed phase are discussed and illustrated by three examples from our laboratory.
ID - 287
ER -

TY - JOUR
AU - Morandeira, Ana
AU - Engeli, Laurine
AU - Vauthey, Eric
TI - Ultrafast Charge Recombination of Photogenerated Ion Pairs to an Electronic Excited State
PY - 2002
JF - Journal of Physical Chemistry A
JA - J. Phys. Chem. A
SN - 1089-5639
VL - 106
IS - 19
SP - 4833
EP - 4837
L1 - http://pubs.acs.org/doi/pdf/10.1021/jp014393f
L2 - http://pubs.acs.org/doi/full/10.1021/jp014393f
L3 - http://pubs.acs.org/doi/abs/10.1021/jp014393f
L4 - http://www.unige.ch/sciences/chifi/publis/pics/double/ref00270.png
M3 - 10.1021/jp014393f
UR - http://dx.doi.org/10.1021/jp014393f
N2 - The dynamics of charge recombination (CR) of ion pairs formed upon electron-transfer quenching of Zn tetraphenylporphine (ZnTPP) in the S2 state has been investigated by fluorescence upconversion. These ion pairs have two possible CR pathways:  (A) a highly exergonic CR to the neutral ground state and (B) a moderately exergonic CR leading to the formation of ZnTPP in the S1 state. Upon addition of quencher, the S2 fluorescence decreases considerably, while the S1 fluorescence is unaffected, indicating unambiguously that CR occurs via path B. A large fraction of the S2 fluorescence quenching occurs in less than 100 fs. CR to the S1 state of ZnTPP takes place with time constants around 400 fs.
ID - 270
ER -

TY - JOUR
AU - Nicolet, O.
AU - Vauthey, E.
TI - Ultrafast Nonequilibrium Charge Recombination Dynamics of Excited Donor-Acceptor Complexes
PY - 2002
JF - Journal of Physical Chemistry A
JA - J. Phys. Chem. A
SN - 1089-5639
VL - 106
IS - 23
SP - 5553
EP - 5562
L1 - http://pubs.acs.org/doi/pdf/10.1021/jp025542c
L2 - http://pubs.acs.org/doi/full/10.1021/jp025542c
L3 - http://pubs.acs.org/doi/abs/10.1021/jp025542c
M3 - 10.1021/jp025542c
UR - http://dx.doi.org/10.1021/jp025542c
N2 - The dynamics of charge recombination (CR) of excited donor−acceptor complexes composed of methoxy-substituted benzenes and pyromellitic dianhydride were investigated in four different solvents using both the multiplex transient grating and the transient absorption techniques. At constant driving force, the CR dynamics are substantially faster than those with methyl-substituted benzenes as donors. In acetonitrile (ACN), the CR time constant decreases from 3.5 ps with anisole down to 240 fs with tetramethoxybenzene. In valeronitrile, the CR is always slower than in ACN but is, in most cases, faster than diffusional solvation. The free energy, the solvent, and the temperature dependence of the CR dynamics can be qualitatively well reproduced using the hybrid model of Barbara and co-workers after incorporation of the contribution of inertial motion to solvation. The ability of this model to account for the absence of normal region at small driving force is also examined.
ID - 269
ER -

TY - CHAP
AU - Engeli, L.
AU - Morandeira, A.
AU - Muller, P.-A.
AU - Vauthey, E.
TI - Dynamics of S2 Fluorescence Quenching and of Charge Recombination in the Resulting Ion Pair
PY - 2002
BT - Femtochemistry and Femtobiology
PB - A. Douhal and J. Santamaria Eds., World Scientific Publishing: Singapore
SP - 314
ID - 268
ER -

TY - CHAP
AU - Morandeira, A.
AU - Vauthey, E.
AU - Mongin, A.
AU - Gossauer, A.
TI - Ultrafast Excited State Dynamics in Multiporphyrin Arrays
PY - 2002
BT - Femtochemistry and Femtobiology
PB - A. Douhal and J. Santamaria Eds., World Scientific Publishing: Singapore
SP - 789
ID - 267
ER -