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Singh BP, Hwang SJ. Unveiling the potential of polymer cholesteric liquid crystal interpenetrating networks as a label-free alcohol biochemical sensor. Analyst 2024; 149:3456-3467. [PMID: 38738996 DOI: 10.1039/d4an00464g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
In this study, an optical sensor is developed, incorporating hydrogen-bonded photonic array dots containing poly(acrylic acid) (PAA) within a polymer cholesteric liquid crystal interpenetrating polymer network (PCLCIPN) framework, thereby effectively controlling porosity. This methodology involves the fabrication of a porous photonic film, subsequent infusion with a hydrogel (PAA), and precise UV-curing to generate patterned array dots. The sensor exhibits exceptional discriminatory capability between methanol and ethanol, accurately discerning their varying concentrations within alcohol solutions. The optical sensing performance of the film is rigorously evaluated through continuous monitoring of wavelength shifts in the transmission spectrum across various alcohol concentrations. Notably, the observed wavelength shifts demonstrate a linear correlation with the concentration of alcohol, thereby enabling precise quantitative analysis of the alcohol solutions. The sensor exhibits a sensitivity of 0.44 nm/% for ethanol concentrations ranging from 5% to 60%, increasing to 2.1 nm/% for concentrations between 60% and 80%. Similarly, for methanol, sensitivities of 0.68 nm/% (5-60%) and 2.2 nm/% (60-80%) are recorded. Remarkably, this sensitivity trend extends seamlessly to 1 : 1 ethanol/methanol ratios, with values of 0.49 nm/% (5-60%) and 2.25 nm/% (60-80%). Furthermore, these sensors demonstrate colorimetric response to different alcohols, rendering them accessible and cost-effective biosensors for visual detection, thus obviating the necessity for complex analytical instruments.
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Affiliation(s)
- Bhupendra Pratap Singh
- Department of Electro-Optical Engineering, National United University, Miao-Li 360, Taiwan.
| | - Shug-June Hwang
- Department of Electro-Optical Engineering, National United University, Miao-Li 360, Taiwan.
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Geetha M, Sadasivuni KK, Al-Ejji M, Sivadas N, Bhattacharyya B, Musthafa FN, Alfarwati S, Promi TJ, Ahmad SA, Alabed S, Hijazi DA, Alsaedi F, Al-Shaibah FN. Design and Development of Inexpensive Paper-Based Chemosensors for Detection of Divalent Copper. J Fluoresc 2023; 33:2327-2338. [PMID: 37036631 PMCID: PMC10640528 DOI: 10.1007/s10895-023-03220-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/20/2023] [Indexed: 04/11/2023]
Abstract
Simple, portable, and low-cost paper-based sensors are alternative devices that have the potential to replace high-cost sensing technologies. The compatibility of the paper base biosensors for both chemical and biochemical accentuates its feasibility for application in clinical diagnosis, environmental monitoring, and food quality monitoring. High concentration of copper in blood serum and urine is associated with diseases like liver diseases, carcinomas, acute and chronic infections, rheumatoid arthritis, etc. Detection of copper concentration can give an early sign of Alzheimer disease. Apart from that genetic Wilson's disease can be detected by evaluating the concentration of copper in the urine. In view of the above advantages, a novel and the highly sensitive paper-based sensor has been designed for the selective detection of Cu2+ ions. The fast and highly sensitive chemiresistive multi-dye system sensor can detect Cu2+ ions selectively in as low as 2.23 ppm concentration. Least interference has been observed for counter ion in the detection of Cu2+. Copper chloride, nitrate, and acetate were used to validate the detection process. This assay provides a very high selectivity of Cu2+ ion over other metal cations such as Na+, Mg2+, Ca2+, etc. The easy preparation and high stability of dye solutions, easy functionalization of the paper-based sensors, high selectivity over other cations, low interference of counter anion, and significantly low detection limit of 2.23 ppm make it an effective Cu2+ ion sensor for real-time application in near future.
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Affiliation(s)
- Mithra Geetha
- Center for Advanced Materials, Qatar University, P. O Box 2713, Doha, Qatar
| | | | - Maryam Al-Ejji
- Center for Advanced Materials, Qatar University, P. O Box 2713, Doha, Qatar
| | | | | | - Farzana N Musthafa
- Center for Advanced Materials, Qatar University, P. O Box 2713, Doha, Qatar
| | - Sarya Alfarwati
- Center for Advanced Materials, Qatar University, P. O Box 2713, Doha, Qatar
| | | | - Sumayya Ali Ahmad
- Center for Advanced Materials, Qatar University, P. O Box 2713, Doha, Qatar
| | - Sara Alabed
- Center for Advanced Materials, Qatar University, P. O Box 2713, Doha, Qatar
| | - Dima Anwar Hijazi
- Biological and Environmental Sciences Department, Qatar University, Doha, Qatar
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Feng M, Liu F, Yang N, Yu J, Yang W, Young DJ, Cao XQ, Li HX, Ren ZG. One-Dimensional Heterobimetallic Au/Ag Coordination Polymer Showing a Selective, Reversible, and Visible Vapor-Chromic Photoluminescent Response toward Methanol. Inorg Chem 2023; 62:6439-6446. [PMID: 37053452 DOI: 10.1021/acs.inorgchem.3c00429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
A heterobimetallic coordination polymer [Au4(dppmt)4(AgCl)2]n (1) incorporating an in situ generated P-S ligand (dppmtH) was synthesized from the solvothermal reaction of Au(tht)Cl, AgCl, and dpppyatc in CH3CN/CH2Cl2 (dppmtH = (diphenylphosphino)methanethiol, tht = tetrahydrothiophene, dpppyatc = N,N-bis((diphenylphosphaneyl)methyl)-N-(pyridin-2-yl)-amino-thiocarbamide). The structure of 1 contains a one-dimensional helical Au-Au chain in which the unique [Au4Ag2S2] cluster units are connected by [Au2(dppmt)2] dimers. Upon excitation at 343 nm, 1 exhibited cyan (495 nm) phosphorescent emission at quantum yield (QY) = 22.3% and τ = 0.78 μs (λex = 375 nm). Coordination polymer 1 exhibited a rapid, selective, reversible, and visible vapor-chromic response on exposure to methanol (MeOH) vapor with its emission shifting to a more intense green (530 nm, λex = 388 nm) with QY = 46.8% and τ = 1.24 μs (λex = 375 nm). A polymethylmethacrylate film containing 1 served as a reversible chemical sensor for the sensitive detection of MeOH in air.
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Affiliation(s)
- Mengyao Feng
- Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Fuyuan Liu
- Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Ningwen Yang
- Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Jiayao Yu
- Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Wei Yang
- Faculty of Food Science and Technology, Suzhou Polytechnic Institute of Agriculture, Suzhou 215008, People's Republic of China
| | - David James Young
- Glasgow College UESTC, University of Electronic Science and Technology of China, Chengdu 611731, People's Republic of China
| | - Xiang-Qian Cao
- Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Hong-Xi Li
- Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
| | - Zhi-Gang Ren
- Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
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Kumbhakar P, Sha MS, Tiwary CS, Muthalif AGA, Al-maadeed S, Sadasivuni KK. An efficient transition metal chalcogenide sensor for monitoring respiratory alkalosis. 3 Biotech 2023; 13:109. [PMID: 36875961 PMCID: PMC9978044 DOI: 10.1007/s13205-023-03497-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/25/2023] [Indexed: 03/05/2023] Open
Abstract
For many biomedical applications, high-precision CO2 detection with a rapid response is essential. Due to the superior surface-active characteristics, 2D materials are particularly crucial for electrochemical sensors. The liquid phase exfoliation method of 2D Co2Te3 production is used to achieve the electrochemical sensing of CO2. The Co2Te3 electrode performs better than other CO2 detectors in terms of linearity, low detection limit, and high sensitivity. The outstanding physical characteristics of the electrocatalyst, including its large specific surface area, quick electron transport, and presence of a surface charge, can be credited for its extraordinary electrocatalytic activity. More importantly, the suggested electrochemical sensor has great repeatability, strong stability, and outstanding selectivity. Additionally, the electrochemical sensor based on Co2Te3 could be used to monitor respiratory alkalosis. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03497-z.
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Affiliation(s)
- Partha Kumbhakar
- Center for Advanced Materials, Qatar University, PO Box 2713, Doha, Qatar
| | - Mizaj Shabil Sha
- Center for Advanced Materials, Qatar University, PO Box 2713, Doha, Qatar
| | | | - Asan G. A. Muthalif
- Department of Mechanical and Industrial Engineering, Qatar University, PO Box 2713, Doha, Qatar
| | - Somaya Al-maadeed
- Department of Computer Science and Engineering, Qatar University, PO Box 2713, Doha, Qatar
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Sha MS, Maurya MR, Chowdhury MEH, Muthalif AGA, Al-Maadeed S, Sadasivuni KK. A smartphone-interfaced, low-cost colorimetry biosensor for selective detection of bronchiectasis via an artificial neural network. RSC Adv 2022; 12:23946-23955. [PMID: 36128540 PMCID: PMC9414259 DOI: 10.1039/d2ra03769f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 08/09/2022] [Indexed: 12/03/2022] Open
Abstract
Exhaled breath (EB) contains several macromolecules that can be exploited as biomarkers to provide clinical information about various diseases. Hydrogen peroxide (H2O2) is a biomarker because it indicates bronchiectasis in humans. This paper presents a non-invasive, low-cost, and portable quantitative analysis for monitoring and quantifying H2O2 in EB. The sensing unit works on colorimetry by the synergetic effect of eosin blue, potassium permanganate, and starch-iodine (EPS) systems. Various sampling conditions like pH, response time, concentration, temperature and selectivity were examined. The UV-vis absorption study of the assay showed that the dye system could detect as low as ∼0.011 ppm levels of H2O2. A smart device-assisted detection unit that rapidly detects red, green and blue (RGB) values has been interfaced for practical and real-time application. The RGB value-based quantification of the H2O2 level was calibrated against NMR spectroscopy and exhibited a close correlation. Further, we adopted a machine learning approach to predict H2O2 concentration. For the evaluation, an artificial neural network (ANN) regression model returned 0.941 R2 suggesting its great prospect for discrete level quantification of H2O2. The outcomes exemplified that the sensor could be used to detect bronchiectasis from exhaled breath. Detection of bronchiectasis from exhaled breath.![]()
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Affiliation(s)
- Mizaj Shabil Sha
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Muni Raj Maurya
- Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | | | - Asan G. A. Muthalif
- Department of Mechanical and Industrial Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Somaya Al-Maadeed
- Department of Computer Science and Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
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