A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor

A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor

A copper ion sensor based on a new bis-thiourea compound N1,N3-bis[[3,5-bis(trifluoromethyl)phenyl]carbamothioyl]isophthalamide (or TPC) as neutral carrier was investigated. The immobilization of the TPC into poly(n-butyl acrylate) (pBA) membrane via drop casting and the sensor was characterized by...

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Main Authors: Kook, Shih Ying, Lee, Yook Heng, Nurul Izzaty Hassan, Siti Aishah Hasbullah
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2018
Online Access:http://journalarticle.ukm.my/12646/
http://journalarticle.ukm.my/12646/
http://journalarticle.ukm.my/12646/1/08%20Kook%20Shih%20Ying.pdf
id ukm-12646
recordtype eprints
spelling ukm-126462019-03-17T11:27:43Z http://journalarticle.ukm.my/12646/ A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor Kook, Shih Ying Lee, Yook Heng Nurul Izzaty Hassan, Siti Aishah Hasbullah, A copper ion sensor based on a new bis-thiourea compound N1,N3-bis[[3,5-bis(trifluoromethyl)phenyl]carbamothioyl]isophthalamide (or TPC) as neutral carrier was investigated. The immobilization of the TPC into poly(n-butyl acrylate) (pBA) membrane via drop casting and the sensor was characterized by potentiometry. The sensor fabricated from TPC only showed a good Nernstian response towards copper ion with a sensitivity slope of 28.81±0.53mV/decade in the range of 1.0 × 10-6 - 1.0 × 10-4 M. The limit of detection of this sensor was found to be 6.11 × 10-7 M and with short sensor response time (60 - 80 s). This sensor also demonstrated reversibility and reproducibility with 3.69% and 1.84% (Relative Standard Deviation, RSD), respectively. Based on the separate solution method (SSM), the logarithm selectivity coefficients were better than -2.00 for monovalent, divalent and trivalent cations and this confirmed that the sensor exhibited good selectivity towards copper ion. The sensor could attain optimum function without the need in the inclusion of either lipophilic anions as a membrane additive nor plasticizer as a membrane softener. Thus, these are the main advantages. The addition of lipophilic anions into the pBA membrane could cause the sensitivity and selectivity of the copper ion sensor based on ionophore TPC to deteriorate. Penerbit Universiti Kebangsaan Malaysia 2018-11 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12646/1/08%20Kook%20Shih%20Ying.pdf Kook, Shih Ying and Lee, Yook Heng and Nurul Izzaty Hassan, and Siti Aishah Hasbullah, (2018) A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor. Sains Malaysiana, 47 (11). pp. 2657-2666. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid47bil11_2018/KandunganJilid47Bil11_2018.html
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institution Universiti Kebangasaan Malaysia
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language English
description A copper ion sensor based on a new bis-thiourea compound N1,N3-bis[[3,5-bis(trifluoromethyl)phenyl]carbamothioyl]isophthalamide (or TPC) as neutral carrier was investigated. The immobilization of the TPC into poly(n-butyl acrylate) (pBA) membrane via drop casting and the sensor was characterized by potentiometry. The sensor fabricated from TPC only showed a good Nernstian response towards copper ion with a sensitivity slope of 28.81±0.53mV/decade in the range of 1.0 × 10-6 - 1.0 × 10-4 M. The limit of detection of this sensor was found to be 6.11 × 10-7 M and with short sensor response time (60 - 80 s). This sensor also demonstrated reversibility and reproducibility with 3.69% and 1.84% (Relative Standard Deviation, RSD), respectively. Based on the separate solution method (SSM), the logarithm selectivity coefficients were better than -2.00 for monovalent, divalent and trivalent cations and this confirmed that the sensor exhibited good selectivity towards copper ion. The sensor could attain optimum function without the need in the inclusion of either lipophilic anions as a membrane additive nor plasticizer as a membrane softener. Thus, these are the main advantages. The addition of lipophilic anions into the pBA membrane could cause the sensitivity and selectivity of the copper ion sensor based on ionophore TPC to deteriorate.
format Article
author Kook, Shih Ying
Lee, Yook Heng
Nurul Izzaty Hassan,
Siti Aishah Hasbullah,
spellingShingle Kook, Shih Ying
Lee, Yook Heng
Nurul Izzaty Hassan,
Siti Aishah Hasbullah,
A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor
author_facet Kook, Shih Ying
Lee, Yook Heng
Nurul Izzaty Hassan,
Siti Aishah Hasbullah,
author_sort Kook, Shih Ying
title A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor
title_short A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor
title_full A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor
title_fullStr A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor
title_full_unstemmed A new copper ionophore N1, N3-Bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor
title_sort new copper ionophore n1, n3-bis [[3,5-bis(trifluoromethyl)phenyl] carbamothioyl] isophtalamide for potentiometric sensor
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2018
url http://journalarticle.ukm.my/12646/
http://journalarticle.ukm.my/12646/
http://journalarticle.ukm.my/12646/1/08%20Kook%20Shih%20Ying.pdf
first_indexed 2023-09-18T20:03:04Z
last_indexed 2023-09-18T20:03:04Z
_version_ 1777406978232942592

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