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Tip‐Enhanced Raman Spectroscopic Studies of the Hydrogen Bonding between Adenine and Thymine Adsorbed on Au (111)
Author(s) -
Zhang Dai,
Domke Katrin F.,
Pettinger Bruno
Publication year - 2010
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200900883
Subject(s) - thymine , monolayer , chemistry , hydrogen bond , raman spectroscopy , crystallography , substrate (aquarium) , adsorption , hydrogen , photochemistry , spectroscopy , molecule , dna , organic chemistry , biochemistry , physics , oceanography , quantum mechanics , optics , geology
STM tip‐enhanced spectroscopy is employed to study the hydrogen bonding between adenine (A) and thymine (T) at monolayer coverage at a Au(111) surface. The AT base pair adsorbs nearly vertically at Au(111) with A close to the substrate and T exposed away (see picture). In contrast to the observation at neutral pH, no AT hydrogen bonding at pH 1 is found.