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Functionalization of self‐assembled monolayers on glass and oxidized silicon wafers by surface reactions
Author(s) -
Flink Simon,
van Veggel Frank C. J. M.,
Reinhoudt David N.
Publication year - 2001
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.372
Subject(s) - monolayer , chemistry , pyrene , contact angle , surface modification , photochemistry , silicon , excimer , fluorescence , ellipsometry , wafer , x ray photoelectron spectroscopy , wetting , analytical chemistry (journal) , chemical engineering , organic chemistry , nanotechnology , materials science , thin film , optics , biochemistry , engineering , physics
Surface reactions were employed to introduce a variety of functional groups in self‐assembled monolayers (SAMs) on hydroxylated surfaces such as glass and oxidized silicon wafers. The resulting layers were fully characterized by wettability studies, ellipsometry, Brewster angle infrared and x‐ray photoelectron spectroscopy, UV–visible absorption and fluorescence measurements. Based on these measurements, it was concluded that the steric hindrance of the monolayer hampered the surface reactions, which generally led to sub‐monolayer coverages. Detailed information concerning the interactions amongst adsorbates was obtained from fluorescence measurements. The characteristic excimer emission of pyrene‐functionalized layers showed a large dependence on the solvent that was in contact with the SAM. Furthermore, efficient energy transfer could be observed in mixed monolayers that contained both fluorescein and lissamine groups. Copyright © 2001 John Wiley & Sons, Ltd.