Premium
Vibrational Spectroscopy of Surface Adsorbates by Sum Frequency Generation (SFG)
Author(s) -
Hirose Chiaki,
Watanabe Nobuyuki,
Yamamoto Hiroyoshi,
Wada Akihide,
Domen Kazunari,
Ohtake T.,
Mino Norihisa
Publication year - 1994
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199400038
Subject(s) - chemistry , chemisorption , formic acid , adsorption , alkyl , formate , sum frequency generation , desorption , sum frequency generation spectroscopy , substrate (aquarium) , infrared spectroscopy , spectroscopy , photochemistry , x ray photoelectron spectroscopy , analytical chemistry (journal) , catalysis , organic chemistry , chemical engineering , laser , nonlinear optics , physics , oceanography , quantum mechanics , optics , geology , engineering
The vibrational spectroscopy by way of vibrational sum‐frequency generation (VSFG) has been made of formic acid adsorbed on MgO(001) surface and of n‐alkyltrichlorosilanes chemisorbed on quartz plates. It was revealed that the species on the MgO surface was formate ion (HCOO + ) with CH bonds standing vertical to the surface and that the different adsorption sites showed up on repeated cycles of adsorption‐desorption processes. The results of chemisorbed films indicated that the g‐t and/or g‐t‐g′ conformational scquences of n‐alkyl chains occurred more frequently by the length of alkyl chain and that the surface hydroxyls, which are the sites of chemisorption, are ripped off by pre‐exposure of substrate to oxygen plasma.