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New azidation methods for the functionalization of silicon nitride and application in copper‐catalyzed azide‐alkyne cycloaddition (CuAAC)
Author(s) -
Lange N.,
Dietrich P. M.,
Lippitz A.,
Kulak N.,
Unger W. E. S.
Publication year - 2016
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5950
Subject(s) - silane , derivatization , surface modification , cycloaddition , amination , azide , click chemistry , chemistry , silicon , combinatorial chemistry , polymer chemistry , catalysis , organic chemistry , high performance liquid chromatography
In this study, a new direct functionalization method of silicon nitride (Si 3 N 4 ) using azidation and click chemistry is presented. First, amino groups (NH x ) were created on a Si 3 N 4 substrate by fluoride etching. These NH x ‐terminated Si 3 N 4 surfaces were analyzed by chemical derivatization X‐ray photoelectron spectroscopy with 4‐trifluoromethylbenzaldehyde, and a derivatization yield of 20% was concluded. In the second step, freshly prepared NH x surfaces were transformed into azides, which were used immediately in a click reaction with halogenated alkynes. The presented combination of amination, azidation, and click reaction is a promising alternative for common silane‐based Si 3 N 4 functionalization methods. Copyright © 2016 John Wiley & Sons, Ltd.