Journal
MRS COMMUNICATIONS
Volume 10, Issue 3, Pages 482-486Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/mrc.2020.50
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Funding
- SERB, DST
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In this paper, the Lewis base character of 3-aminopropyltrimethoxysilane (3-APTMS), an imine derivative of siloxane, and an indole monomer were shown to enable the reduction of gold cations in acetone. The Lewis acid-base adduct of indole monomers and gold formed a polyindole-gold nanoparticle sol. Similarly, the Lewis acid-base adduct of 3-APTMS and gold enabled the formation of gold nanoparticles in the presence of acetone. The polyindole-gold nanoparticle sol and siloxane-gold nanoparticles underwent self-assembly into a polymeric nanofluid that was suitable for casting membranes. The use of these membranes as a potentiometric ion sensor for both cations and anions was considered; a common nonspecific ion exchange molecule, sodium tetraphenylborate, and the polymeric nanofluid were used to prepare an anion sensor and a cation sensor.
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