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Molecular Suction Pads: Self‐Assembled Monolayers of Subphthalocyaninatoboron Complexes on Gold
Author(s) -
Glebe Ulrich,
Baio Joe E.,
Árnadóttir Líney,
Siemeling Ulrich,
Weidner Tobias
Publication year - 2013
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.201300074
Subject(s) - monolayer , chemisorption , x ray photoelectron spectroscopy , xanes , chemistry , self assembled monolayer , molecule , adsorption , substrate (aquarium) , covalent bond , crystallography , absorption (acoustics) , spectroscopy , materials science , organic chemistry , chemical engineering , biochemistry , physics , oceanography , quantum mechanics , engineering , composite material , geology
Subphthalocyaninatoboron complexes with six long‐chain alkylthio substituents in their periphery are applicable for the formation of self‐assembled monolayers (SAMs) on gold. Such films are prepared from solution with the axially chlorido‐substituted derivatives and characterised by near‐edge X‐ray absorption fine structure (NEXAFS) spectroscopy, X‐ray photoelectron spectroscopy (XPS) and time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS). The results are in accord with the formation of SAMs assembled by the chemisorption of both covalently bound thiolate‐type as well as coordinatively bound thioether units. The adsorbate molecules adopt an essentially flat adsorption geometry on the substrate, resembling a suction pad on a surface.