1
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Fan J, Kang L, Cheng X, Liu D, Zhang S. Biomass-Derived Carbon Dots and Their Sensing Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4473. [PMID: 36558326 PMCID: PMC9783293 DOI: 10.3390/nano12244473] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Carbon dots (CDs) can be widely used in the field of sensing because of its good water solubility, low toxicity, high fluorescence stability and excellent biocompatibility. It has become a popular trend to prepare high-value, inexpensive, renewable and environmentally friendly CDs sensors from biomass resources. This article reviewed the research progress of biomass-derived CDs as chemical, physical and biological sensors in recent years and studied their preparation processes and sensing abilities. Furthermore, the prospects and challenges of biomass-CDs sensors were discussed. This article is expected to provide inspirations for the design, preparation and application of biomass-CDs sensors in the future.
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Affiliation(s)
- Jiang Fan
- Department of Chemical Engineering, Textile and Clothing, Shaanxi Polytechnic Institute, Xianyang 712000, China
| | - Lei Kang
- School of Surveying & Testing, Shaanxi Railway Institute, Weinan 714000, China
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Xu Cheng
- Department of Chemical Engineering, Textile and Clothing, Shaanxi Polytechnic Institute, Xianyang 712000, China
| | - Di Liu
- Department of Chemical Engineering, Textile and Clothing, Shaanxi Polytechnic Institute, Xianyang 712000, China
| | - Sufeng Zhang
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi’an 710021, China
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2
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Antignano I, D’Acunzo F, Arena D, Casciardi S, Del Giudice A, Gentile F, Pelosi M, Masci G, Gentili P. Influence of Nanoaggregation Routes on the Structure and Thermal Behavior of Multiple-Stimuli-Responsive Micelles from Block Copolymers of Oligo(ethylene glycol) Methacrylate and the Weak Acid [2-(Hydroxyimino)aldehyde]butyl Methacrylate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14371-14386. [PMID: 36346681 PMCID: PMC9686140 DOI: 10.1021/acs.langmuir.2c02515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/20/2022] [Indexed: 06/16/2023]
Abstract
In this work, we compare nanoaggregation driven by pH-induced micellization (PIM) and by the standard solvent displacement (SD) method on a series of pH-, light-, and thermosensitive amphiphilic block copolymers. Specifically, we investigate poly(HIABMA)-b-poly(OEGMA) and poly(HIABMA)-b-poly(DEGMA-r-OEGMA), where HIABMA = [(hydroxyimino)aldehyde]butyl methacrylate, OEGMA = oligo(ethylene glycol)methyl ether methacrylate, and DEGMA = di(ethylene glycol)methyl ether methacrylate. The weakly acidic HIA group (pKa ≈ 8) imparts stability to micelles at neutral pH, unlike most of the pH-responsive copolymers investigated in the literature. With SD, only some of our copolymers yield polymeric micelles (34-59 nm), and their thermoresponsivity is either poor or altogether absent. In contrast, PIM affords thermoresponsive, smaller micelles (down to 24 nm), regardless of the polymer composition. In some cases, cloud points are remarkably well defined and exhibit limited hysteresis. By combining turbidimetric, dyamic light scattering, and small-angle X-ray scattering measurements, we show that SD yields loose micelles with POEGMA segments partly involved in the formation of the hydrophobic core, whereas PIM yields more compact core-shell micelles with a well-defined PHIABMA core. We conclude that pH-based nanoaggregation provides advantages over block-selective solvation to obtain compact micelles exhibiting well-defined responses to external stimuli.
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Affiliation(s)
- Irene Antignano
- Department
of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185Roma, Italy
| | - Francesca D’Acunzo
- Institute
of Biological Systems (ISB), Italian National Research Council (CNR),
Sezione Meccanismi di Reazione, c/o Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185Roma, Italy
| | - Davide Arena
- Department
of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185Roma, Italy
| | - Stefano Casciardi
- National
Institute for Insurance Against Accidents at Work (INAIL Research),
Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via Fontana Candida 1, 00078Monte Porzio Catone (Rome), Italy
| | | | - Francesca Gentile
- Department
of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185Roma, Italy
| | - Maria Pelosi
- Department
of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185Roma, Italy
| | - Giancarlo Masci
- Department
of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185Roma, Italy
| | - Patrizia Gentili
- Department
of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185Roma, Italy
- Institute
of Biological Systems (ISB), Italian National Research Council (CNR),
Sezione Meccanismi di Reazione, c/o Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185Roma, Italy
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3
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Sharma R, Lee HI. Recent advances in polymeric chemosensors for the detection and removal of mercury ions in complex aqueous media. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2022. [DOI: 10.1080/10601325.2022.2054348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Rini Sharma
- Department of Chemistry, University of Ulsan, Ulsan, Republic of Korea
| | - Hyung-il Lee
- Department of Chemistry, University of Ulsan, Ulsan, Republic of Korea
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4
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Wang L, Liu Y, Liu Y, Mao Y, Han J, Li W, Wang Y. Recyclable aptamer-derived aqueous two-phase flotation for high-efficiency separation of mercury(II) ions modulated by aggregation states. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118917] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Huang L, Li P, Lin C, Wu Y, Chen Z, Fu F. DNA-templated fluorescent silver nanoclusters on-off switch for specific and sensitive determination of organic mercury in seafood. Biosens Bioelectron 2021; 183:113217. [PMID: 33862395 DOI: 10.1016/j.bios.2021.113217] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/14/2021] [Accepted: 04/02/2021] [Indexed: 02/06/2023]
Abstract
Organic mercury including methyl-mercury and ethyl-mercury (CH3Hg+ and C2H5Hg+) has high toxicity and bio-accumulation, and thus is easy to generate bio-amplification in food chain. Hence, the specific detection of organic mercury has great significance for objectively assessing the health risk of mercury in seafood. We herein designed an aptamer (AS-T7), which consists of a silver nanoclusters (AgNCs) scaffold sequence (AS) and a T-rich sequence (AT7), for simultaneously synthetizing DNA-templated AgNCs and recognizing organic mercury, and further developed a label-free fluorescent method for the sensitive and specific determination of organic mercury (CH3Hg+ and C2H5Hg+ total concentration) by using DNA-templated AgNCs as signal. Without organic mercury, Ag+ in the mixture of aptamer and Ag+ was bond on AS of aptamer to form AS-templated AgNCs after reduction, and thus emitted strong fluorescence. Whereas, in the presence of organic mercury, CH3Hg+/C2H5Hg+ was bond on AT7 of aptamer to generate photoinduced electron transfer (PET) between CH3Hg+/C2H5Hg+ and AS-templated AgNCs, and thus results in fluorescence quenching of AS-templated AgNCs. The fluorescent method could be used to rapidly detect organic mercury with a detection limit of 5.0 nM (i.e. 1.01 ng Hg/g), which meets the U.S. EPA standard of 0.3 mg/kg (wet). The method was successfully used to detect organic mercury in water and fish muscle with a recovery of 96%-104% and an inter-days RSD (n = 5) < 7%. The success of the study promised a reliable method for rapid and specific detection of organic mercury in environmental and biological samples.
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Affiliation(s)
- Lin Huang
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE, Fujian Provincial Key Lab of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Peipei Li
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE, Fujian Provincial Key Lab of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Chen Lin
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE, Fujian Provincial Key Lab of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Yongning Wu
- NHC Key Lab of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of China Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Zhiqiang Chen
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE, Fujian Provincial Key Lab of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
| | - FengFu Fu
- Key Laboratory for Analytical Science of Food Safety and Biology of MOE, Fujian Provincial Key Lab of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
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6
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Choudhury N, Saha B, De P. Recent progress in polymer-based optical chemosensors for Cu2+ and Hg2+ Ions: A comprehensive review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110233] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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7
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Wang P, Xue T, Sheng A, Cheng L, Zhang J. Application of Chemoselective Ligation in Biosensing. Crit Rev Anal Chem 2020; 52:170-193. [DOI: 10.1080/10408347.2020.1791044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pei Wang
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, P. R. China
- Shanghai Key Laboratory of Bio-Energy Crops, Shanghai University, Shanghai, P. R. China
| | - Tianxiang Xue
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, P. R. China
| | - Anzhi Sheng
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, P. R. China
| | - Liangfen Cheng
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, P. R. China
| | - Juan Zhang
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, P. R. China
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8
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Annisa TN, Jung SH, Gupta M, Bae JY, Park JM, Lee HI. A Reusable Polymeric Film for the Alternating Colorimetric Detection of a Nerve Agent Mimic and Ammonia Vapor with Sub-Parts-per-Million Sensitivity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:11055-11062. [PMID: 32046484 DOI: 10.1021/acsami.0c00042] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Thin polymeric films were developed for the vapor-phase sequential colorimetric detection of a nerve agent mimic and ammonia with high sensitivity. N-(4-Benzoylphenyl)acrylamide (BPAm), N,N-dimethylacrylamide (DMA), and (E)-2-(methyl(4-(pyridine-4yldiazenyl)phenyl)amino)ethyl acrylate (MPDEA, M1) were copolymerized via free radical polymerization (FRP) to yield p(BPAm-co-DMA-co-MPDEA), hereafter referred to as P1. P1 exhibits selective sensing properties toward diethyl chlorophosphate (DCP), a nerve agent mimic, in pure aqueous media. Upon the addition of DCP, the pyridine groups of P1 were quaternized with DCP, accompanied by a color change from yellow to pink due to the enhancement of the intramolecular charge transfer (ICT) effect. In situ generated quaternized P1, hereafter referred to as P2, after DCP sensing was used to selectively detect ammonia via dequaternization in an aqueous medium. Ammonia detection was indicated by a color change in the solution from pink back to yellow. A surface-immobilized P1 film was prepared and employed for the vapor-phase detection of DCP, demonstrating that an amount of as low as 2 ppm was detectable. Ammonia vapor was also successfully detected by the P2 film via the ammonia-triggered removal of the quaternized phosphates. Alternating exposure of the film to DCP and ammonia resulted in the corresponding color changes, thereby demonstrating the reversibility of the system. The reusability of the polymeric film for detecting DCP and ammonia in the vapor phase was confirmed by performing four sequential colorimetric detection cycles.
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Affiliation(s)
- Tiara Nur Annisa
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Seo-Hyun Jung
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
- Center for green fine chemicals, Korea Research Institute of Chemical Technology, Ulsan 44412, Republic of Korea
| | - Moumita Gupta
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Ja Young Bae
- Center for green fine chemicals, Korea Research Institute of Chemical Technology, Ulsan 44412, Republic of Korea
| | - Jong Mok Park
- Center for green fine chemicals, Korea Research Institute of Chemical Technology, Ulsan 44412, Republic of Korea
| | - Hyung-Il Lee
- Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
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9
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Preparation of mixed micelles carrying folates and stable radicals through PLA stereocomplexation for drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110464. [DOI: 10.1016/j.msec.2019.110464] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/06/2019] [Accepted: 11/17/2019] [Indexed: 01/09/2023]
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10
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Supramolecular block copolymers as novel UV and NIR responsive nanocarriers based on a photolabile coumarin unit. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109561] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Guo X, Huang J, Wei Y, Zeng Q, Wang L. Fast and selective detection of mercury ions in environmental water by paper-based fluorescent sensor using boronic acid functionalized MoS 2 quantum dots. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:120969. [PMID: 31404893 DOI: 10.1016/j.jhazmat.2019.120969] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 08/01/2019] [Accepted: 08/03/2019] [Indexed: 06/10/2023]
Abstract
In this study, the B-MoS2 QDs, boronic acid functionalized MoS2 quantum dots, are synthesized by a simple aminoacylation reaction between MoS2 QDs and 3-aminobenzeneboronic acid (APBA). It not only exhibits excellent thermo-stability, photo-stability and good salt tolerance, but shows excellent fluorescence stability even under industrial wastewater with high concentration. These good characters can be used to construct a new fluorescence sensor for sensitive and selective detection of mercury ions (Hg2+). The fluorescence intensity of B-MoS2 QDs linearly decreases with the increase of Hg2+ concentration ranging from 0.005 to 41 μmol L-1, and the limit of detection as low as 1.8 nmol L-1. Due to the mercury ion-promoted transmetalation reaction of aryl boronic acid, this proposed method exhibits fast response, ultra-sensitivity and high selectivity for analysis of Hg2+ in different environmental water, and which also uses to online monitoring of Hg2+. The B-MoS2 QDs-based test paper can be used to detect the trace amounts of Hg2+ under UV lamp by naked eyes, suggesting that the proposed method has potential application in on-site monitoring of environmental Hg2+.
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Affiliation(s)
- Xinrong Guo
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
| | - Jianzhi Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
| | - Yubo Wei
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
| | - Qiang Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
| | - Lishi Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China.
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12
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Wang L, Wang Y, Li W, Zhi W, Liu Y, Ni L, Wang Y. Recyclable DNA-Derived Polymeric Sensor: Ultrasensitive Detection of Hg(II) Ions Modulated by Morphological Changes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:40575-40584. [PMID: 31613586 DOI: 10.1021/acsami.9b13035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Going beyond organic solvent as the solubilizer for small-molecular organic probes motivates exploration of water-soluble polymeric sensors. In this respect, dye-derived thermal-responsive polymeric sensors are an attractive direction, but for its practical application, it is limited by sensor recycling because only irreversible change in the structure of the recognition unit for many sensors can trigger the appearance of the detection signal. Here, we established the oligonucleotide-derived thermal-responsive polymeric sensor, TBC-P1, which overcame this fundamental limitation. The TBC-P1 sensor was based on reversible binding between oligonucleotides and Hg2+ ions, and easy sensor separation via tuning temperature, achieving the Hg2+ detection in a cost-effective and green manner. The TBC-P1 sensor displayed specific and rapid sensing properties toward Hg2+ ions in pure aqueous media via turn-off fluorescence emission, with a limit of detection as low as 0.65 nM (much lower than the presently reported dye-derived polymeric sensors). This high detection sensitivity was further enhanced (with LOD = 0.17 nM) via warming to yield spherical micelles, in which the oligonucleotide-containing thermoresponsive PNIPAM block forming a hydrophobic core amplified the fluorescence signals. Treating the Hg2+-trapped micelles with cysteine (Cys) led to competition-induced release of these combined Hg2+ ions and then thermally precipitating and recycling polymeric sensor TBC-P1. This oligonucleotide-derived thermalresponsive polymeric sensor will open a universal avenue for sensor recycling, which will achieve the goal of reducing cost and improving detection sensitivity of sensors.
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Affiliation(s)
- Lei Wang
- School of Chemistry and Chemical Engineering , Jiangsu University , 301 Xuefu Road , Zhenjiang 212013 , Jiangsu Province , China
| | - Yu Wang
- School of Chemistry and Chemical Engineering , Jiangsu University , 301 Xuefu Road , Zhenjiang 212013 , Jiangsu Province , China
| | - Wenxuan Li
- School of Chemistry and Chemical Engineering , Jiangsu University , 301 Xuefu Road , Zhenjiang 212013 , Jiangsu Province , China
| | - Wenjing Zhi
- School of Chemistry and Chemical Engineering , Jiangsu University , 301 Xuefu Road , Zhenjiang 212013 , Jiangsu Province , China
| | - Yuanyuan Liu
- School of Chemistry and Chemical Engineering , Jiangsu University , 301 Xuefu Road , Zhenjiang 212013 , Jiangsu Province , China
| | - Liang Ni
- School of Chemistry and Chemical Engineering , Jiangsu University , 301 Xuefu Road , Zhenjiang 212013 , Jiangsu Province , China
| | - Yun Wang
- School of Chemistry and Chemical Engineering , Jiangsu University , 301 Xuefu Road , Zhenjiang 212013 , Jiangsu Province , China
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13
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Soliman SMA, El Founi M, Vanderesse R, Acherar S, Ferji K, Babin J, Six JL. Light-sensitive dextran-covered PNBA nanoparticles to continuously or discontinuously improve the drug release. Colloids Surf B Biointerfaces 2019; 182:110393. [DOI: 10.1016/j.colsurfb.2019.110393] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/07/2019] [Accepted: 07/23/2019] [Indexed: 10/26/2022]
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14
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Haldar U, Lee HI. BODIPY-Derived Polymeric Chemosensor Appended with Thiosemicarbazone Units for the Simultaneous Detection and Separation of Hg(II) Ions in Pure Aqueous Media. ACS APPLIED MATERIALS & INTERFACES 2019; 11:13685-13693. [PMID: 30882200 DOI: 10.1021/acsami.9b00408] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Developing a simple and cheap analytical method for the selective detection and quantitative separation of toxic ions present in aqueous media is the biggest challenge faced by the chemosensing research community. Here, a 5,5-difluoro-1,3,7,9-tetramethyl-10-phenyl-5 H-dipyrrolo-diazaborinine-derived water-soluble polymer integrated with thiosemicarbazone units was rationally designed and synthesized for the simultaneous detection and separation of Hg(II) ions in pure aqueous solution. The water-soluble polymer scaffold poly( N, N'-dimethyl acrylamide- co-5,5-difluoro-1,3,7,9-tetramethyl-10-phenyl-5 H-dipyrrolo-diazaborinine-2-carbaldehyde) was synthesized by reversible addition-fragmentation chain transfer polymerization, followed by post-polymerization modification with thiosemicarbazide, leading to the formation of the target probe, P1. The nonemitting P1 exhibited bright yellow emission upon exposure to Hg(II) ions, with a limit of detection as low as 0.37 μM. This turn-on emission behavior triggered by Hg(II) ions might originate from the suppression of isomerization around the C═N bond of the thiosemicarbazone moiety caused by the formation of a coordination complex between P1 and Hg(II) ions. In addition, P1 displayed excellent selectivity toward Hg(II) ions over other metal cations. Finally, the selective removal of Hg(II) ions from an aqueous solution containing various metal ions was achieved by precipitation, which is probably caused by the fact that coordination complexes whereby Hg(II) ions acted as bridgeheads between P1 molecules had formed.
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Affiliation(s)
- Ujjal Haldar
- Department of Chemistry , University of Ulsan , Ulsan 680-749 , Republic of Korea
| | - Hyung-Il Lee
- Department of Chemistry , University of Ulsan , Ulsan 680-749 , Republic of Korea
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15
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Kim HJ, Lee HI. Thermo-tunable colorimetric detection of mercury(ii) ions driven by the temperature-dependent assembly and disassembly of a block copolymer. Polym Chem 2019. [DOI: 10.1039/c9py00620f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A thermo-responsive double-hydrophilic block copolymer (DHBC) was synthesized for the thermo-tunable detection of mercury(ii) ions modulated by a temperature-dependent morphological transition between unimers and micellar aggregates.
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Affiliation(s)
- Hye-Jin Kim
- Department of Chemistry
- University of Ulsan
- Ulsan
- Korea
- Advanced Industrial Chemistry Research Center
| | - Hyung-il Lee
- Department of Chemistry
- University of Ulsan
- Ulsan
- Korea
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