Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/33838
Título : A simple and inexpensive thermal optic nanosensor formed by triblock copolymer and polydiacetylene mixture
Autor: Ferreira, Gabriel Max Dias
Ferreira, Guilherme Max Dias
Hespanhol, Maria do Carmo
Rezende, Jaqueline de Paula
Pires, Ana Clarissa dos Santos
Ortega, Paulo Fernando Ribeiro
Silva, Luis Henrique Mendes da
Palavras-chave: Nanoblend
Colorimetric transition
Polymer interaction
Chromatic transition temperature
Thermosensor
Publicador: Elsevier
Data da publicação: Fev-2018
Referência: FERREIRA, G. M. D. et al. A simple and inexpensive thermal optic nanosensor formed by triblock copolymer and polydiacetylene mixture. Food Chemistry, [S.l.], v. 241, p. 358-363, Feb. 2018.
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 < F68< L64 < F127<P123, indicating the importance of the hydrophobic environment for the colorimetric transition of nanoblends. The results here demonstrated that the balance of intermolecular interaction between TC-TC, TC-DA, and DA-DA enables the construction of strategic sensor for detecting temperature changes in different applications.
URI: https://www.sciencedirect.com/science/article/pii/S0308814617314425
http://repositorio.ufla.br/jspui/handle/1/33838
Idioma: en_US
Aparece nas coleções:DQI - Artigos publicados em periódicos

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