Journal of Physical Chemistry p. 6218 - 6227 (1991)
Update date:2022-08-05
Topics:
Shimamori, Hiroshi
Uegaito, Hisakazu
One-photon ionization of TMPD has been investigated by observing the time variation of microwave dielectric loss caused by irradiation of 355-nm laser pulse on a solution of TMPD in CCl4 and on that containing both TMPD and CCl4 in C6H6 solvent.In the TMPD-CCl4 system the observed signal shows a rapid growth followed by a second-order decay along with much slower decays.These features can be interpreted as reflecting the formation of contact ion pairs (TMPD(1+)Cl(1-)) and their mutual association leading to ion-pair dimers and clusters.In the TMPD-CCl4-C6H6 system a first-order growth of the dielectric absorption is observed, which corresponds to ion-pair formation by electron transfer from the excited triplet state of TMPD to CCl4, and the reaction rate is diffusion-controlled.The dipole moment of the ion pair has been estimated to be 11 +/- 3 D from two different methods; one based on the amplitude of the detected signal and the other on the rate constant for the ion-pair association.The dipole moment of the ion pair dimer appears to be larger than that of the ion pair itself.The analysis of the data leads to a suggestion that the quantum yield of the ion-pair formation is close to unity.
View MoreContact:+86-10-83993285
Address:Rm.1708, Haobai Tower, Building 6, No.50, North Road, West Third Ring, Haidian District, Beijing, China
WUHAN CHEMPROSPECT PHARMTECH CO., LTD
website:http://www.chemprospect.com
Contact:+86--27-84984898
Address:No. 2, Road, East Lake Hi-tech Development Zone, Wuhan, China
Sinoway International (Jiangsu) Co., Ltd.
Contact:+86-25-86630167
Address:17 Beijing Road (West), Nanjing, China
Contact:+86-633-8332928
Address:No.1,Huanghai Yilu.Rizhao,Shandong
Fujian Huitian Biological Pharmacy Co., Ltd.
Contact:0086-598-8300831; 8339920
Address:No.46,Taijiang Road,Sanming City,Fujian,China
Doi:10.1021/jm200377r
(2011)Doi:10.1039/c1cc12994e
(2011)Doi:10.1016/j.bmc.2011.06.057
(2011)Doi:10.1016/j.bmcl.2011.06.108
(2011)Doi:10.1021/jacs.5b00315
(2015)Doi:10.1080/10426507.2015.1085040
(2016)