Pyrene-SH functionalized OTFT for detection of Hg2+ ions in aquatic environments

Cut Rullyani; Muthaiah Shellaiah; Mohan Ramesh; Hong-Cheu Lin; Chih Wei Chu

doi:10.1016/j.orgel.2019.03.015

Pyrene-SH functionalized OTFT for detection of Hg²⁺ ions in aquatic environments

Cut Rullyani, Muthaiah Shellaiah, Mohan Ramesh, Hong-Cheu Lin, Chih Wei Chu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Mercury ion (Hg²⁺) sensor based on bottom gate top contact organic thin film transistor (OTFT) was fabricated. The OTFT channel area was functionalized with pyrene that contain thiol group, which has strong binding affinity toward Hg²⁺ ion. The OTFT sensor exhibited a charge mobility of 0.28 cm² V⁻¹ s⁻¹, a threshold voltage of −22.3 V and on-to-off ratio 10³. The sensor shows high selectivity to Hg²⁺ ion over other two valence metal ions. OTFT sensor exhibited high sensitivity to Hg²⁺ ion, indicated by increasing of drain current after exposed to different concentration of Hg²⁺ ion ranging from 1 mM to 0.01 μM. Moreover, the OTFT sensor capability for practical application was also demonstrated by sensing the present of 25 μM of Hg²⁺ ion in tap, drinking and seawater samples.

Original language	English
Pages (from-to)	275-280
Number of pages	6
Journal	Organic Electronics
Volume	69
DOIs	https://doi.org/10.1016/j.orgel.2019.03.015
State	Published - Jun 2019

Keywords

Mercury sensor
Organic thin film transistor
Pyrene derivative

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10.1016/j.orgel.2019.03.015

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@article{462825ac37ae42fd9ecdcfcddd43780e,

title = "Pyrene-SH functionalized OTFT for detection of Hg2+ ions in aquatic environments",

abstract = "Mercury ion (Hg2+) sensor based on bottom gate top contact organic thin film transistor (OTFT) was fabricated. The OTFT channel area was functionalized with pyrene that contain thiol group, which has strong binding affinity toward Hg2+ ion. The OTFT sensor exhibited a charge mobility of 0.28 cm2 V−1 s−1, a threshold voltage of −22.3 V and on-to-off ratio 103. The sensor shows high selectivity to Hg2+ ion over other two valence metal ions. OTFT sensor exhibited high sensitivity to Hg2+ ion, indicated by increasing of drain current after exposed to different concentration of Hg2+ ion ranging from 1 mM to 0.01 μM. Moreover, the OTFT sensor capability for practical application was also demonstrated by sensing the present of 25 μM of Hg2+ ion in tap, drinking and seawater samples.",

keywords = "Mercury sensor, Organic thin film transistor, Pyrene derivative",

author = "Cut Rullyani and Muthaiah Shellaiah and Mohan Ramesh and Hong-Cheu Lin and Chu, {Chih Wei}",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jun,

doi = "10.1016/j.orgel.2019.03.015",

language = "English",

volume = "69",

pages = "275--280",

journal = "Organic Electronics",

issn = "1566-1199",

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TY - JOUR

T1 - Pyrene-SH functionalized OTFT for detection of Hg2+ ions in aquatic environments

AU - Rullyani, Cut

AU - Shellaiah, Muthaiah

AU - Ramesh, Mohan

AU - Lin, Hong-Cheu

AU - Chu, Chih Wei

PY - 2019/6

Y1 - 2019/6

N2 - Mercury ion (Hg2+) sensor based on bottom gate top contact organic thin film transistor (OTFT) was fabricated. The OTFT channel area was functionalized with pyrene that contain thiol group, which has strong binding affinity toward Hg2+ ion. The OTFT sensor exhibited a charge mobility of 0.28 cm2 V−1 s−1, a threshold voltage of −22.3 V and on-to-off ratio 103. The sensor shows high selectivity to Hg2+ ion over other two valence metal ions. OTFT sensor exhibited high sensitivity to Hg2+ ion, indicated by increasing of drain current after exposed to different concentration of Hg2+ ion ranging from 1 mM to 0.01 μM. Moreover, the OTFT sensor capability for practical application was also demonstrated by sensing the present of 25 μM of Hg2+ ion in tap, drinking and seawater samples.

AB - Mercury ion (Hg2+) sensor based on bottom gate top contact organic thin film transistor (OTFT) was fabricated. The OTFT channel area was functionalized with pyrene that contain thiol group, which has strong binding affinity toward Hg2+ ion. The OTFT sensor exhibited a charge mobility of 0.28 cm2 V−1 s−1, a threshold voltage of −22.3 V and on-to-off ratio 103. The sensor shows high selectivity to Hg2+ ion over other two valence metal ions. OTFT sensor exhibited high sensitivity to Hg2+ ion, indicated by increasing of drain current after exposed to different concentration of Hg2+ ion ranging from 1 mM to 0.01 μM. Moreover, the OTFT sensor capability for practical application was also demonstrated by sensing the present of 25 μM of Hg2+ ion in tap, drinking and seawater samples.

KW - Mercury sensor

KW - Organic thin film transistor

KW - Pyrene derivative

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U2 - 10.1016/j.orgel.2019.03.015

DO - 10.1016/j.orgel.2019.03.015

M3 - Article

AN - SCOPUS:85063979644

SN - 1566-1199

VL - 69

SP - 275

EP - 280

JO - Organic Electronics

JF - Organic Electronics

ER -

Pyrene-SH functionalized OTFT for detection of Hg²⁺ ions in aquatic environments

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Keywords

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