Abstract
The proton transfer times for a 2-phenyl-benzotriazole (HOPB) having an octyl group on the 5-position are essentially the same as those found earlier with 5-methyl substituent but the overall rotational reorientation time is significantly increased with the octyl substituent. A systematic study of the proton transfer in 1-alkanols has revealed that the rates for both methyl and octyl derivatives are close to the solvent longitudinal relaxation times, τ L . Significant solvation of excited molecules is not occurring during the proton transfer lifetime. It is concluded that the proton transfer is a tunneling process that is slowed down by the multidimensionality of the potential surface and by the solvent fluctuations.
| Original language | English |
|---|---|
| Pages (from-to) | 311-319 |
| Number of pages | 9 |
| Journal | Chemical Physics |
| Volume | 136 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1989 Sep 15 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
Cite this
}
Solvent effects on intramolecular proton transfer. / Kim, Yong Rok; Yardley, J. T.; Hochstrasser, R. M.
In: Chemical Physics, Vol. 136, No. 2, 15.09.1989, p. 311-319.Research output: Contribution to journal › Article
TY - JOUR
T1 - Solvent effects on intramolecular proton transfer
AU - Kim, Yong Rok
AU - Yardley, J. T.
AU - Hochstrasser, R. M.
PY - 1989/9/15
Y1 - 1989/9/15
N2 - The proton transfer times for a 2-phenyl-benzotriazole (HOPB) having an octyl group on the 5-position are essentially the same as those found earlier with 5-methyl substituent but the overall rotational reorientation time is significantly increased with the octyl substituent. A systematic study of the proton transfer in 1-alkanols has revealed that the rates for both methyl and octyl derivatives are close to the solvent longitudinal relaxation times, τ L . Significant solvation of excited molecules is not occurring during the proton transfer lifetime. It is concluded that the proton transfer is a tunneling process that is slowed down by the multidimensionality of the potential surface and by the solvent fluctuations.
AB - The proton transfer times for a 2-phenyl-benzotriazole (HOPB) having an octyl group on the 5-position are essentially the same as those found earlier with 5-methyl substituent but the overall rotational reorientation time is significantly increased with the octyl substituent. A systematic study of the proton transfer in 1-alkanols has revealed that the rates for both methyl and octyl derivatives are close to the solvent longitudinal relaxation times, τ L . Significant solvation of excited molecules is not occurring during the proton transfer lifetime. It is concluded that the proton transfer is a tunneling process that is slowed down by the multidimensionality of the potential surface and by the solvent fluctuations.
UR - http://www.scopus.com/inward/record.url?scp=0001000397&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001000397&partnerID=8YFLogxK
U2 - 10.1016/0301-0104(89)80055-2
DO - 10.1016/0301-0104(89)80055-2
M3 - Article
AN - SCOPUS:0001000397
VL - 136
SP - 311
EP - 319
JO - Chemical Physics
JF - Chemical Physics
SN - 0301-0104
IS - 2
ER -