Title of article :
Vibrational energy transfer of chemisorbed ethyltrichlorosilane at the glass/air interface
Author/Authors :
Saك، نويسنده , , M. and Lِbau، نويسنده , , J. and Lettenberger، نويسنده , , M. and Laubereau، نويسنده , , A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Pages :
8
From page :
13
To page :
20
Abstract :
Chemisorbed films of ethyltrichlorosilane (ETS) at the glass/air interface are studied by IR-excitation sum-frequency (SF) spectroscopy. Using two independently tunable infrared pulses in combination with a visible upconversion pulse for the SF-probing process, a time-resolved vibrational spectroscopy is accomplished for the molecular monolayer at the dielectric surface. Rapid energy transfer in the CH-stretching region is observed with a time constant of 1.5±1 ps. The population relaxation of the CH3-stretching modes is found to be bimodal with a decay time of T1=4.5±1 ps, while the ground state is re-populated rather slowly with 130±50 ps.
Journal title :
Chemical Physics Letters
Serial Year :
1999
Journal title :
Chemical Physics Letters
Record number :
1779327
Link To Document :
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