Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor

Cyanopyridone-based oligothiophene donors with both hydrophobic and hydrophilic characters have been evaluated as active layers within simple capacitive devices for humidity sensing at room temperature. Surface studies using atomic force microscopy revealed a self-assembled nanofibrous network with...

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Autores principales:	Salman Ali, Mohammed A. Jameel, Christopher J. Harrison, Akhil Gupta, Richard A. Evans, Mahnaz Shafiei, Steven J. Langford
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	capacitive sensors donor-acceptor humidity hydrogen bonding self-assembly Biochemistry QD415-436
Acceso en línea:	https://doaj.org/article/be10e1d736a3408a80d81d23bce82656
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spelling	oai:doaj.org-article:be10e1d736a3408a80d81d23bce826562021-11-25T17:13:41ZEnhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor10.3390/chemosensors91103202227-9040https://doaj.org/article/be10e1d736a3408a80d81d23bce826562021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9040/9/11/320https://doaj.org/toc/2227-9040Cyanopyridone-based oligothiophene donors with both hydrophobic and hydrophilic characters have been evaluated as active layers within simple capacitive devices for humidity sensing at room temperature. Surface studies using atomic force microscopy revealed a self-assembled nanofibrous network with a thin needle-like structure for the terminal hydroxy example (<b>CP6</b>), devoid in the methyl example (<b>CP1</b>). The sensing performance of each sensor was investigated over a broad range of relative humidity levels as a function of capacitance at room temperature. The sensor <b>CP6</b> demonstrated favourable features such as high sensitivity (12.2 pF/%RH), quick response/recovery (13 s/20.7 s), wide working range of relative humidity (10%–95% RH), low hysteresis (0.57%), outstanding recyclability, and excellent long-term stability. From the results obtained, hydrophilicity and hydrogen bonding appear to play a vital role in enhancing humidity sensing performance, leading to possible new design directions for simple organic semiconductor-based sensors.Salman AliMohammed A. JameelChristopher J. HarrisonAkhil GuptaRichard A. EvansMahnaz ShafieiSteven J. LangfordMDPI AGarticlecapacitive sensorsdonor-acceptorhumidityhydrogen bondingself-assemblyBiochemistryQD415-436ENChemosensors, Vol 9, Iss 320, p 320 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	capacitive sensors donor-acceptor humidity hydrogen bonding self-assembly Biochemistry QD415-436
spellingShingle	capacitive sensors donor-acceptor humidity hydrogen bonding self-assembly Biochemistry QD415-436 Salman Ali Mohammed A. Jameel Christopher J. Harrison Akhil Gupta Richard A. Evans Mahnaz Shafiei Steven J. Langford Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor
description	Cyanopyridone-based oligothiophene donors with both hydrophobic and hydrophilic characters have been evaluated as active layers within simple capacitive devices for humidity sensing at room temperature. Surface studies using atomic force microscopy revealed a self-assembled nanofibrous network with a thin needle-like structure for the terminal hydroxy example (<b>CP6</b>), devoid in the methyl example (<b>CP1</b>). The sensing performance of each sensor was investigated over a broad range of relative humidity levels as a function of capacitance at room temperature. The sensor <b>CP6</b> demonstrated favourable features such as high sensitivity (12.2 pF/%RH), quick response/recovery (13 s/20.7 s), wide working range of relative humidity (10%–95% RH), low hysteresis (0.57%), outstanding recyclability, and excellent long-term stability. From the results obtained, hydrophilicity and hydrogen bonding appear to play a vital role in enhancing humidity sensing performance, leading to possible new design directions for simple organic semiconductor-based sensors.
format	article
author	Salman Ali Mohammed A. Jameel Christopher J. Harrison Akhil Gupta Richard A. Evans Mahnaz Shafiei Steven J. Langford
author_facet	Salman Ali Mohammed A. Jameel Christopher J. Harrison Akhil Gupta Richard A. Evans Mahnaz Shafiei Steven J. Langford
author_sort	Salman Ali
title	Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor
title_short	Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor
title_full	Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor
title_fullStr	Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor
title_full_unstemmed	Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor
title_sort	enhanced capacitive humidity sensing performance at room temperature via hydrogen bonding of cyanopyridone-based oligothiophene donor
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/be10e1d736a3408a80d81d23bce82656
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Enhanced Capacitive Humidity Sensing Performance at Room Temperature via Hydrogen Bonding of Cyanopyridone-Based Oligothiophene Donor

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