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Updated: Feb 22, 2026
A Polyaniline-based Sensor of Nucleic Acids
Published on: November 1, 2016
A simple and inexpensive thermal optic nanosensor formed by triblock copolymer and polydiacetylene mixture
Gabriel Max Dias Ferreira1, Guilherme Max Dias Ferreira2, Maria do Carmo Hespanhol1
1Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química, Universidade Federal de Viçosa, Av, PH Rolfs, s/n, Campus Universitário, Viçosa, MG 36570-000, Brazil.
Abstract:
Polydiacetylene (PDA) vesicles have been applied as optical sensors in different areas, although there are difficulties in controlling their responses. In this study, we prepared nanoblends of PDA with triblock copolymers (TC) as a better sensor system for detecting temperature change. The influences of diacetylene (DA) monomer, and the TC chemical structure and concentration on the colorimetric response (CR) were examined. The TC/PDA nanoblend was remarkably more sensitive to temperature change, than classical vesicles. A higher L64 concentration of 12.0% (w/w) reduced the chromatic transition temperature (Ttr) to as low as 24°C. When using different TCs, the Ttr values can be ordered as L35
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