Issue 35, 2021

Detection of polyamines by an extended gate-type organic transistor functionalized with a carboxylate attached 1,3,4-thiadiazole derivative

Abstract

We herein report an extended gate-type organic thin-film transistor (OTFT)-based polyamine sensor and its application in pattern recognition. The extended-gate electrode was functionalized with a complex of copper(II) ions and 2-carboxymethylthio-5-mercapto-1,3,4-thiadiazole, which enabled the OTFT to respond to polyamines in an aqueous solution. Moreover, the responses of the OTFT-based sensor exhibited a cross-reactivity, implying its capability to detect multi-analytes. Thus, we performed pattern recognition against nine target polyamines (spermine, spermidine, trimethylenediamine, ethylenediamine, histamine, tryptamine, putrescine, cadaverine and 1,6-diaminohexane) in combination with linear discriminant analysis and successfully discriminated the analytes. Moreover, we achieved the quantification of spermine in a diluted fruit juice by using a support vector machine with high accuracy. Overall, the demonstration using the OTFT-based chemical sensor with pattern recognition revealed its potential for sensing polyamines in real samples.

Graphical abstract: Detection of polyamines by an extended gate-type organic transistor functionalized with a carboxylate attached 1,3,4-thiadiazole derivative

Supplementary files

Article information

Article type
Paper
Submitted
02 apr 2021
Accepted
18 mei 2021
First published
19 mei 2021

J. Mater. Chem. C, 2021,9, 11690-11697

Author version available

Detection of polyamines by an extended gate-type organic transistor functionalized with a carboxylate attached 1,3,4-thiadiazole derivative

K. Asano, Y. Sasaki, Q. Zhou, R. Mitobe, W. Tang, X. Lyu, M. Kamiko, H. Tanaka, A. Yamagami, K. Hagiya and T. Minami, J. Mater. Chem. C, 2021, 9, 11690 DOI: 10.1039/D1TC01542G

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