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Second harmonic generation spectroscopy of p-cresol and carbazole on SiO2 surfaces

โœ Scribed by N.E. van Wyck; E.W. Koenig; J.D. Byers; W.M. Hetherington III

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
402 KB
Volume
122
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Surface second harmonic generalion (SHG) has been developed as a surface specific type or electronic spectroscopy. The surke second-order susceptibility x(" is enhanced by the adsorption 01 molecules. and an elsctronic spcc~rum an be gcncnred by scanning thz dye laser through Ihe wo-photon resonances 01 the adsorbale The speara or p-crcsol ionicnlly and covalently bound to SiOl and or carbazols covalemly bound LO SiO, have been obmincd. Weakly bound molecules such as hydrogen-bonded cresol. phenol and aniline ns well as pyridine nrr rapidly desorbed by the comperilive process ol Iwo-pholon absorption.

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