TY - JOUR
T1 - Excited-state photophysics of an acridine derivative selectively intercalated in duplex DNA
AU - Hess, Stephan
AU - Davis, William B.
AU - Voityuk, Alexander A.
AU - Rösch, Notker
AU - Michel-Beyerle, Maria E.
AU - Ernsting, Nikolaus P.
AU - Kovalenko, Sergeij A.
AU - Pérez Lustres, J. Luis
PY - 2002/5/17
Y1 - 2002/5/17
N2 - Faster than 200 fs is the time scale of dynamic solvation of an acridine derivative (ACMA) intercalated into an abasic site of the DNA duplex. This observation implies that the Strokes shift of).41 eV is due to ultrafast repolarization od the nuclear degrees of freedom of the DNA pocket. in this system, the environmental reorganization induced by the dipole moment change of 3-4 Debye upon excitation may involve both π-π interactions between ACMA and the adjacent nucleobases as well as polar interactions exerted by the hydrogen bonds of these base pairs.
AB - Faster than 200 fs is the time scale of dynamic solvation of an acridine derivative (ACMA) intercalated into an abasic site of the DNA duplex. This observation implies that the Strokes shift of).41 eV is due to ultrafast repolarization od the nuclear degrees of freedom of the DNA pocket. in this system, the environmental reorganization induced by the dipole moment change of 3-4 Debye upon excitation may involve both π-π interactions between ACMA and the adjacent nucleobases as well as polar interactions exerted by the hydrogen bonds of these base pairs.
KW - DNA
KW - Flourescent probes
KW - Intercalations
KW - Semiempirical Calculations
KW - Time-resolved spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=0037123405&partnerID=8YFLogxK
U2 - 10.1002/1439-7641(20020517)3:5<452::AID-CPHC452>3.0.CO;2-K
DO - 10.1002/1439-7641(20020517)3:5<452::AID-CPHC452>3.0.CO;2-K
M3 - Article
C2 - 12465507
AN - SCOPUS:0037123405
SN - 1439-4235
VL - 3
SP - 452
EP - 455
JO - ChemPhysChem
JF - ChemPhysChem
IS - 5
ER -