TY - JOUR
T1 - Solvation dynamics in supercooled liquids
T2 - the quinoxaline triplet stae in 2-MTHF at the glass transition
AU - Richert, Ranko
N1 - Funding Information:
Financial support by the Fonds der Chemischen Industrie and Deutsche Forschungsgemeinschaft is gratefully acknowledged. I should thank the Hes-sisches Ministerium ftir Wissenschaft und Kunst for placing the OMA III system at our disposal as part of the Wissenschaftliches Zentrum fur Materialwis-senschaften der Philipps Universitat, Mar-burg.
PY - 1990/8/3
Y1 - 1990/8/3
N2 - The phosphorescence of quinoxaline as dopant in 2-MTHF is investigated at temperatures near the glass transition of the host solution. Within the accessed time range from 500 μs to 1 s, the emission band is subject to a temporally resolved Stokes shift of ≈ 250 cm-1 monitoring the solvation dynamics of the excited probe molecule. The non-exponential Stokes-shift correlation functions indicate that microscopic aspects of the solvation process have to be considered for rationalizing the experimental data. The results are discussed in the context of solvations dynamics of singlet excitations and the dielectric behaviour of supercooled liquids.
AB - The phosphorescence of quinoxaline as dopant in 2-MTHF is investigated at temperatures near the glass transition of the host solution. Within the accessed time range from 500 μs to 1 s, the emission band is subject to a temporally resolved Stokes shift of ≈ 250 cm-1 monitoring the solvation dynamics of the excited probe molecule. The non-exponential Stokes-shift correlation functions indicate that microscopic aspects of the solvation process have to be considered for rationalizing the experimental data. The results are discussed in the context of solvations dynamics of singlet excitations and the dielectric behaviour of supercooled liquids.
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U2 - 10.1016/0009-2614(90)85230-A
DO - 10.1016/0009-2614(90)85230-A
M3 - Article
AN - SCOPUS:0342751146
SN - 0009-2614
VL - 171
SP - 222
EP - 228
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3
ER -