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Updated: Sep 23, 2025

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
Published on: November 22, 2016
Diazonium-functionalized thin films from the spontaneous reaction of p-phenylenebis(diazonium) salts
Nicholas Marshall1, Andres Rodriguez1, Scott Crittenden2
1Dept. of Chemistry and Physics, University of South Carolina Aiken 471 University Parkway Aiken SC 29801 USA nicholasm@usca.edu.
Abstract:
Salts of the diazonium coupling agent p-phenylenebis(diazonium) form diazonium-terminated conjugated thin films on a variety of conductive and nonconductive surfaces by spontaneous reaction of the coupling agent with the surface. The resulting diazonium-bearing surface can be reacted with various organic and inorganic nucleophiles to form a functionalized surface. These surfaces have been characterized with voltammetry, XPS, infrared and Raman spectroscopy, and atomic force microscopy. Substrates that can be conveniently and quickly modified with this process include ordinary glass, gold, and an intact, fully assembled commercial screen-printed carbon electrode. The scope and convenience of this process make it promising for practical surface modification.
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