1
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Huang SZ, Tang Q, Wei KN, Yang RP, Tao Z, Huang Y, Xiao X. A colorimetric supramolecular sensor array based on charge-transfer complexes for multiplex aniline and phenolic pollutants detection. Anal Chim Acta 2022; 1233:340504. [DOI: 10.1016/j.aca.2022.340504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/24/2022] [Accepted: 10/07/2022] [Indexed: 11/01/2022]
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2
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Kumar NM, Picchetti P, Hu C, Grimm LM, Biedermann F. Chemiluminescent Cucurbit[ n]uril-Based Chemosensor for the Detection of Drugs in Biofluids. ACS Sens 2022; 7:2312-2319. [PMID: 35895991 DOI: 10.1021/acssensors.2c00934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chemiluminescence-based detection methods offer a superior signal-to-noise ratio and are commonly adopted for biosensors. This work presents the design and implementation of a supramolecular assay based on a chemiluminescent chemosensor. Specifically, an indicator displacement assay (IDA) with the supramolecular host-guest complex of chemiluminescent phenoxy 1,2-dioxetane and cucurbit[8]uril enables the low-micromolar detection of drugs in human urine and human serum samples. Cucurbit[8]uril thereby acts as a non-surfactant chemiluminescence enhancer and a synthetic receptor. Additionally, we show that adding an equimolar amount of cucurbit[8]uril to a commercially available dioxetane used in standard enzymatic chemiluminescence immunoassays enhances the chemiluminescence by more than 15 times. Finally, we demonstrate that a chemiluminescence resonance energy transfer between a unimolecular macrocyclic cucurbit[7]uril-dye conjugate and a phenoxy 1,2-dioxetane can be utilized to detect the herbicide paraquat at a micromolar concentration in aqueous media.
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Affiliation(s)
- Nilima Manoj Kumar
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Pierre Picchetti
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Changming Hu
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Laura M Grimm
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Frank Biedermann
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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3
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Chen L, Tian X, Li Y, Yang C, Huang Y, Nie Y. Rapid and sensitive screening of multiple polycyclic aromatic hydrocarbons by a reusable fluorescent sensor array. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127694. [PMID: 34785436 DOI: 10.1016/j.jhazmat.2021.127694] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/30/2021] [Accepted: 11/01/2021] [Indexed: 05/29/2023]
Abstract
Simple and rapid sensing of polycyclic aromatic hydrocarbons (PAHs) remains a great technical challenge due to their chemical stability and structural similarity. Here, a simple, sensitive and cost-effective sensing strategy is proposed to detect multiple PAHs by utilizing the inner filter effect (IFE) and a reusable fluorescent sensor array consisting of four polyvinyl alcohol (PVA) composite carbon quantum dots (CDs) film sensors. The CDs/PVA films have a wide and tunable excitation range, which provide sufficient spectral overlap with PAHs and ensure the efficient occurrence of IFE. Under different excitations, the diverse UV absorption capacities of PAHs resulted in diverse spectral responses, enabling a unique chemical fingerprint for each PAH. Upon multivariate pattern recognition analysis, the array rendered high-throughput discrimination and sensitive quantification of 16 priority PAHs with 100% classification accuracy and detection limit as low as 57 nM. Moreover, the rapid and accurate screening of multiple environmental samples were also realized with the results consistent with high-performance liquid chromatography. This IFE-based reusable array is readily prepared, green and feasible, which exhibits great potential in environmental analysis and brings an advanced strategy to high-throughput sensing of more pollutants with similar structures and lack of recognition sites.
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Affiliation(s)
- Linfeng Chen
- School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, PR China; Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China
| | - Xike Tian
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, PR China
| | - Yong Li
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China
| | - Chao Yang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, PR China
| | - Yunjie Huang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China
| | - Yulun Nie
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, PR China.
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4
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Alafeef M, Dighe K, Moitra P, Pan D. Monitoring the Viral Transmission of SARS-CoV-2 in Still Waterbodies Using a Lanthanide-Doped Carbon Nanoparticle-Based Sensor Array. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2022; 10:245-258. [PMID: 35036178 PMCID: PMC8751013 DOI: 10.1021/acssuschemeng.1c06066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 12/13/2021] [Indexed: 05/02/2023]
Abstract
The latest epidemic of extremely infectious coronavirus disease 2019 (COVID-19) has created a significant public health concern. Despite substantial efforts to contain severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) within a specific location, shortcomings in the surveillance of predominantly asymptomatic infections constrain attempts to identify the epidemiological spread of the virus. Continuous surveillance of wastewater streams, including sewage, offers opportunities to track the spread of SARS-CoV-2, which is believed to be found in fecal waste. To demonstrate the feasibility of SARS-CoV-2 detection in wastewater systems, we herein present a novel facilely constructed fluorescence sensing array based on a panel of three different lanthanide-doped carbon nanoparticles (LnCNPs). The differential fluorescence response pattern due to the counterion-ligand interactions allowed us to employ powerful pattern recognition to effectively detect SARS-CoV-2 and differentiate it from other viruses or bacteria. The sensor results were benchmarked to the gold standard RT-qPCR, and the sensor showed excellent sensitivity (1.5 copies/μL) and a short sample-to-results time of 15 min. This differential response of the sensor array was also explained from the differential mode of binding of the LnCNPs with the surface proteins of the studied bacteria and viruses. Therefore, the developed sensor array provides a cost-effective, community diagnostic tool that could be potentially used as a novel epidemiologic surveillance approach to mitigate the spread of COVID-19.
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Affiliation(s)
- Maha Alafeef
- Bioengineering
Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Biomedical
Engineering Department, Jordan University
of Science and Technology, Irbid 22110, Jordan
- Departments
of Diagnostic Radiology and Nuclear Medicine and Pediatrics, University of Maryland Baltimore, Health Sciences
Facility III, 670 W Baltimore Street, Baltimore, Maryland 21201, United
States
- Department
of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary
Health Sciences Facility, 1000 Hilltop Circle, Baltimore, Maryland 21250, United
States
| | - Ketan Dighe
- Bioengineering
Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department
of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary
Health Sciences Facility, 1000 Hilltop Circle, Baltimore, Maryland 21250, United
States
| | - Parikshit Moitra
- Departments
of Diagnostic Radiology and Nuclear Medicine and Pediatrics, University of Maryland Baltimore, Health Sciences
Facility III, 670 W Baltimore Street, Baltimore, Maryland 21201, United
States
| | - Dipanjan Pan
- Bioengineering
Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Departments
of Diagnostic Radiology and Nuclear Medicine and Pediatrics, University of Maryland Baltimore, Health Sciences
Facility III, 670 W Baltimore Street, Baltimore, Maryland 21201, United
States
- Department
of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary
Health Sciences Facility, 1000 Hilltop Circle, Baltimore, Maryland 21250, United
States
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5
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Joseph V, Levine M. Ronald C.D. Breslow (1931-2017): A career in review. Bioorg Chem 2021; 115:104868. [PMID: 34523507 DOI: 10.1016/j.bioorg.2021.104868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/23/2021] [Indexed: 11/26/2022]
Abstract
Reviewed herein are key research accomplishments of Professor Ronald Charles D. Breslow (1931-2017) throughout his more than 60 year research career. These accomplishments span a wide range of topics, most notably physical organic chemistry, medicinal chemistry, and bioorganic chemistry. These topics are reviewed, as are topics of molecular electronics and origin of chirality, which combine to make up the bulk of this review. Also reviewed briefly are Breslow's contributions to the broader chemistry profession, including his work for the American Chemical Society and his work promoting gender equity. Throughout the article, efforts are made to put Breslow's accomplishments in the context of other work being done at the time, as well as to include subsequent iterations and elaborations of the research.
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Affiliation(s)
- Vincent Joseph
- Department of Chemical Sciences, Ariel University, Israel
| | - Mindy Levine
- Department of Chemical Sciences, Ariel University, Israel.
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6
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Levine M. Fluorescence-Based Sensing of Pesticides Using Supramolecular Chemistry. Front Chem 2021; 9:616815. [PMID: 33937184 PMCID: PMC8085505 DOI: 10.3389/fchem.2021.616815] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/11/2021] [Indexed: 01/02/2023] Open
Abstract
The detection of pesticides in real-world environments is a high priority for a broad range of applications, including in areas of public health, environmental remediation, and agricultural sustainability. While many methods for pesticide detection currently exist, the use of supramolecular fluorescence-based methods has significant practical advantages. Herein, we will review the use of fluorescence-based pesticide detection methods, with a particular focus on supramolecular chemistry-based methods. Illustrative examples that show how such methods have achieved success in real-world environments are also included, as are areas highlighted for future research and development.
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Affiliation(s)
- Mindy Levine
- Ariel University, Department of Chemical Sciences, Ariel, Israel
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7
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Pramanik A, Karmakar J, Grynzspan F, Levine M. Facile Iodine Detection via Fluorescence Quenching of β‐Cyclodextrin:Bimane‐Ditriazole Inclusion Complexes. Isr J Chem 2020. [DOI: 10.1002/ijch.202000092] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Apurba Pramanik
- Department of Chemical Sciences Ariel University 65 Ramat HaGolan Street Ariel Israel
| | - Joy Karmakar
- Department of Chemical Sciences Ariel University 65 Ramat HaGolan Street Ariel Israel
| | - Flavio Grynzspan
- Department of Chemical Sciences Ariel University 65 Ramat HaGolan Street Ariel Israel
| | - Mindy Levine
- Department of Chemical Sciences Ariel University 65 Ramat HaGolan Street Ariel Israel
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8
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Pramanik A, Amer S, Grynszpan F, Levine M. Highly sensitive detection of cobalt through fluorescence changes in β-cyclodextrin-bimane complexes. Chem Commun (Camb) 2020; 56:12126-12129. [PMID: 32914795 DOI: 10.1039/d0cc05812b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A supramolecular complex of syn-(methyl,methyl)bimane (1) and β-cyclodextrin demonstrates a sensitive (limit of detection = 0.60 nM) and selective fluorescence turn-off response in the presence of cobalt in aqueous media, with calibration curves enabling quantitation in solution and using filter papers on which bimane and cyclodextrin were adsorbed. 1H NMR spectroscopy provides insight into interactions underlying the sensor performance.
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Affiliation(s)
- Apurba Pramanik
- Department of Chemical Sciences, Ariel University, 65 Ramat HaGolan Street, Ariel, Israel.
| | - Sara Amer
- Department of Chemical Sciences, Ariel University, 65 Ramat HaGolan Street, Ariel, Israel.
| | - Flavio Grynszpan
- Department of Chemical Sciences, Ariel University, 65 Ramat HaGolan Street, Ariel, Israel.
| | - Mindy Levine
- Department of Chemical Sciences, Ariel University, 65 Ramat HaGolan Street, Ariel, Israel.
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9
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Haynes AZ, Levine M. Detection of Human Growth Hormone (hGH) via Cyclodextrin-Promoted Fluorescence Modulation. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1828445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Anna Z. Haynes
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
| | - Mindy Levine
- Department of Chemical Sciences, Ariel University, Ariel, Israel
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10
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Racicot JM, Mako TL, Healey A, Hos B, Levine M. Efficient Detection and Removal of Polycyclic Aromatic Hydrocarbons Using Cyclodextrin-Modified Cellulose. Chempluschem 2020; 85:1730-1736. [PMID: 32790235 DOI: 10.1002/cplu.202000410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/21/2020] [Indexed: 12/11/2022]
Abstract
Covalent functionalization of cellulose with β-cyclodextrin by succinic acid-promoted cross-linking leads to a dual-function material that efficiently promotes proximity-induced energy transfer from polycyclic aromatic hydrocarbons (PAHs) to squaraine fluorophores with high quantum yields, and removes PAHs from aqueous solution through non-covalent binding. This material, which possesses a high functionalization density (0.17 μg/mm2 of cyclodextrin on cellulose), promotes energy transfer efficiencies as high as 58 % (for an anthracene donor in combination with a squaraine fluorophore acceptor), and leads to the removal of up to 91 % of a PAH (pyrene) from aqueous solution by mixing of the solution with the functionalized material. Overall, the high performance of this material in both proximity-induced energy transfer and the removal of PAHs from water means that such a method has significant potential impact in a variety of real-world environmental remediation scenarios.
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Affiliation(s)
- Joan M Racicot
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881, USA
| | - Teresa L Mako
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881, USA
| | - Anna Healey
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881, USA
| | - Beria Hos
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881, USA
| | - Mindy Levine
- Department of Chemical Sciences, Ariel University, 65 Ramat HaGolan Street, Ariel, 40700, Israel
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11
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Chaudhuri S, DiScenza DJ, Boving TB, Burke A, Levine M. Use of α-cyclodextrin to Promote Clean and Environmentally Friendly Disinfection of Phenolic Substrates via Chlorine Dioxide Treatment. Front Chem 2020; 8:641. [PMID: 32850657 PMCID: PMC7413072 DOI: 10.3389/fchem.2020.00641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 06/22/2020] [Indexed: 12/04/2022] Open
Abstract
The use of chlorine dioxide to disinfect drinking water and ameliorate toxic components of wastewater has significant advantages in terms of providing safe water. Nonetheless, significant drawbacks toward such usage remain. These drawbacks include the fact that toxic byproducts of the disinfection agents are often formed, and the complete removal of such agents can be challenging. Reported herein is one approach to solving this problem: the use of α-cyclodextrin to affect the product distribution in chlorine dioxide-mediated decomposition of organic pollutants. The presence of α-cyclodextrin leads to markedly more oxidation and less aromatic chlorination, in a manner that is highly dependent on analyte structure and other reaction conditions. Mechanistic hypotheses are advanced to explain the cyclodextrin effect, and the potential for use of α-cyclodextrin for practical wastewater treatment is also discussed.
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Affiliation(s)
- Sauradip Chaudhuri
- McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Dana J DiScenza
- Department of Chemistry, University of Virginia, Charlottesville, VA, United States
| | - Thomas B Boving
- Department of Geosciences/Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, RI, United States
| | - Alan Burke
- Independent Researcher, North Kingstown, RI, United States
| | - Mindy Levine
- Department of Chemical Sciences, Ariel University, Ariel, Israel
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12
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Levine M, Smith BR. Enhanced Characterization of Pyrene Binding in Mixed Cyclodextrin Systems via Fluorescence Spectroscopy. J Fluoresc 2020; 30:1015-1023. [PMID: 32607736 DOI: 10.1007/s10895-020-02572-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 06/23/2020] [Indexed: 01/06/2023]
Abstract
Although significant effort has been expended to analyze the binding of pyrene in β-cyclodextrin and γ-cyclodextrin, little has been published on the binding of this guest in β-cyclodextrin derivatives (methyl-β-cyclodextrin and 2-hydroxypropyl-β-cyclodextrin) or in mixtures of such derivatives, despite the fact that these derivatives are known to have different supramolecular properties that facilitate unique modes of complexation. Reported herein is a detailed spectroscopic investigation of the binding of pyrene in β-cyclodextrin derivatives and in binary mixtures of cyclodextrins. Py values, defined as the ratio of representative vibronic bands in the fluorescence emission of pyrene, were used to measure changes in the pyrene microenvironment in the presence of the cyclodextrin hosts, and indicated that unmodified β-cyclodextrin is unique in providing a fully hydrophobic environment for pyrene through the use of two cyclodextrins to bind a single pyrene guest. By comparison, both γ-cyclodextrin and modified β-cyclodextrin analogues bind pyrene in a less hydrophobic environment through 1:1 binding stoichiometries that allow for continued interactions between the incompletely encapsulated pyrene guest and the aqueous solvent system. Binary mixtures of cyclodextrins were also explored and reinforce the unique properties of the unmodified β-cyclodextrin host. Graphical Abstract The unique binding geometries of pyrene in beta-cyclodextrin and its derivatives leads to measurable fluorescence emission signals, whose information can be used to elucidate the highly structurally dependent binding geometries and stoichiometries.
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13
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Haynes AZ, Levine M. Detection of anabolic steroids via cyclodextrin-promoted fluorescence modulation. RSC Adv 2020; 10:25108-25115. [PMID: 35517489 PMCID: PMC9055181 DOI: 10.1039/d0ra03485a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/21/2020] [Indexed: 01/22/2023] Open
Abstract
Reported herein is the detection of anabolic steroids through the use of cyclodextrin-promoted interactions between the analyte of interest and a high quantum yield fluorophore, which lead to measurable, analyte-specific changes in the fluorophore emission signal. By using a variety of β-cyclodextrin derivatives (unmodified β-cyclodextrin, methyl-β-cyclodextrin, and 2-hydroxypropyl-β-cyclodextrin) in combination with high quantum yield fluorophore rhodamine 6G, we detected five anabolic steroid analytes with 100% differentiation between structurally similar analytes and micromolar level limits of detection. Overall, these results show significant potential in the development of practical, fluorescence-based steroid detection devices.
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Affiliation(s)
- Anna Z Haynes
- University of Rhode Island, Department of Chemistry 140 Flagg Road Kingston RI 02881 USA
| | - Mindy Levine
- Ariel University, Department of Chemical Sciences 65 Ramat HaGolan Street Ariel Israel
- University of Rhode Island, Department of Chemistry 140 Flagg Road Kingston RI 02881 USA
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14
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Zheng Z, Yu H, Geng WC, Hu XY, Wang YY, Li Z, Wang Y, Guo DS. Guanidinocalix[5]arene for sensitive fluorescence detection and magnetic removal of perfluorinated pollutants. Nat Commun 2019; 10:5762. [PMID: 31848349 PMCID: PMC6917741 DOI: 10.1038/s41467-019-13775-1] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 11/27/2019] [Indexed: 01/09/2023] Open
Abstract
Perfluorinated alkyl substances, such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), are toxic materials that are known to globally contaminate water, air, and soil resources. Strategies for the simultaneous detection and removal of these compounds are desired to address this emerging health and environmental issue. Herein, we develop a type of guanidinocalix[5]arene that can selectively and strongly bind to PFOS and PFOA, which we use to demonstrate the sensitive and quantitative detection of these compounds in contaminated water through a fluorescent indicator displacement assay. Moreover, by co-assembling iron oxide nanoparticle with the amphiphilic guanidinocalix[5]arene, we are able to use simple magnetic absorption and filtration to efficiently remove PFOS and PFOA from contaminated water. This supramolecular approach that uses both molecular recognition and self-assembly of macrocyclic amphiphiles is promising for the detection and remediation of water pollution.
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Affiliation(s)
- Zhe Zheng
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Nankai University, Tianjin, 300071, China
| | - Huijuan Yu
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Wen-Chao Geng
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Nankai University, Tianjin, 300071, China
| | - Xin-Yue Hu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Nankai University, Tianjin, 300071, China
| | - Yu-Ying Wang
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Nankai University, Tianjin, 300071, China
| | - Zhihao Li
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Nankai University, Tianjin, 300071, China
| | - Yuefei Wang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Dong-Sheng Guo
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Nankai University, Tianjin, 300071, China.
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15
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Haynes A, Halpert P, Levine M. Colorimetric Detection of Aliphatic Alcohols in β-Cyclodextrin Solutions. ACS OMEGA 2019; 4:18361-18369. [PMID: 31720538 PMCID: PMC6844157 DOI: 10.1021/acsomega.9b02612] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/10/2019] [Indexed: 05/20/2023]
Abstract
The sensitive, selective, and practical detection of aliphatic alcohols is a continuing technical challenge with significant impact in public health research and environmental remediation efforts. Reported herein is the use of a β-cyclodextrin derivative to promote proximity-induced interactions between aliphatic alcohol analytes and a brightly colored organic dye, which resulted in highly analyte-specific color changes that enabled accurate alcohol identification. Linear discriminant analysis of the color changes enabled 100% differentiation of the colorimetric signals obtained from methanol, ethanol, and isopropanol in combination with BODIPY and Rhodamine dyes. The resulting solution-state detection system has significant broad-based applicability because it uses only easily available materials to achieve such detection with moderate limits of detection obtained. Future research with this sensor system will focus on decreasing limits of detection as well as on optimizing the system for quantitative detection applications.
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Affiliation(s)
- Anna Haynes
- Department
of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Priva Halpert
- Stella
K. Abraham High School for Girls, 291 Meadowview Ave, Hewlett, New York 11557, United States
| | - Mindy Levine
- Department
of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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16
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Cromwell B, Dubnicka M, Dubrawski S, Levine M. Identification of 15 Phthalate Esters in Commercial Cheese Powder via Cyclodextrin-Promoted Fluorescence Detection. ACS OMEGA 2019; 4:17009-17015. [PMID: 31646248 PMCID: PMC6796234 DOI: 10.1021/acsomega.9b02585] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 09/19/2019] [Indexed: 06/10/2023]
Abstract
A challenge for detecting phthalates in commercial products such as cheese powders is that the composition of the products is highly complex, and current methods for detection rely on gas chromatography-mass spectrometry, which is not portable and cannot be used by individual consumers at a time and place of their choosing. Herein, we report the development of a new method for phthalate detection in cheese powder using cyclodextrin-promoted fluorescence detection, in which the presence of the phthalate analytes leads to highly analyte-specific changes in the fluorescence emission signal of a fluorophore bound in a cyclodextrin cavity. This method relies on subtle changes in the analyte affinity for the fluorophore and the cyclodextrin cavity and provides for markedly more straightforward sample preparation procedures and an extremely rapid read-out signal, with potential for the development of portable fluorescence sensors. Using this method, we were able to detect 15 phthalate esters with highly analyte-specific responses and at concentrations as low as 0.12 μM, which is well below regulatory levels of concern. Computational investigations strongly support the observed experimental trends.
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Affiliation(s)
- Benjamin Cromwell
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Mara Dubnicka
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Sage Dubrawski
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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17
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Wallace AG, McHugh PJ, Symes MD. The Effects of Ultrasound on the Electro-Oxidation of Sulfate Solutions at Low pH. Chemphyschem 2019; 20:3134-3140. [PMID: 31141282 PMCID: PMC6899799 DOI: 10.1002/cphc.201900346] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/20/2019] [Indexed: 12/07/2022]
Abstract
The electro‐oxidation of sulfate solutions is a well‐established route for the generation of powerful oxidants such as persulfate. Despite this, the effects of simultaneous ultrasound irradiation during this process has attracted little attention. Herein, we investigate the effects of a low‐intensity ultrasonic field on the generation of solution‐phase oxidants during the electro‐oxidation of sulfate solutions. Our results show that at high current densities and high sulfate concentrations, ultrasound has little effect on the Faradaic and absolute yields of solution‐phase oxidants. However, at lower current densities and sulfate concentrations, the amount of these oxidants in solution appears to decrease under ultrasonic irradiation. A mechanism explaining these results is proposed (and validated), whereby anodically‐generated sulfate and hydroxyl radicals are more effectively transported into bulk solution (where they are quenched) during sonication, whereas in the absence of an ultrasonic field these radicals combine with one another to form more persistent species (such as persulfate) that can be detected by iodometry.
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Affiliation(s)
- Alexander G Wallace
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, United Kingdom
| | - Patrick J McHugh
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, United Kingdom
| | - Mark D Symes
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, United Kingdom
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18
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Chaudhuri S, DiScenza DJ, Verderame M, Cromwell B, Levine M. Colorimetric detection of polycyclic aromatic hydrocarbons using supramolecular cyclodextrin dimer-squaraine constructs. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1579332] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - Dana J. DiScenza
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
| | - Molly Verderame
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
| | - Benjamin Cromwell
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
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19
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Fluorescence-Based Detection of Benzene, Toluene, Ethylbenzene, Xylene, and Cumene (BTEXC) Compounds in Fuel-Contaminated Snow Environments. CHEMOSENSORS 2019. [DOI: 10.3390/chemosensors7010005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Reported herein is the sensitive and selective cyclodextrin-promoted fluorescence detection of benzene, toluene, ethylbenzene, xylene, and cumene (BTEXC) fuel components in contaminated snow samples collected from several locations in the state of Rhode Island. This detection method uses cyclodextrin as a supramolecular scaffold to promote analyte-specific, proximity-induced fluorescence modulation of a high-quantum-yield fluorophore, which leads to unique fluorescence responses for each cyclodextrin-analyte-fluorophore combination investigated and enables unique pattern identifiers for each analyte using linear discriminant analysis (LDA). This detection method operates with high levels of sensitivity (sub-micromolar detection limits), selectivity (100% differentiation between structurally similar compounds, such as ortho-, meta-, and para-xylene isomers), and broad applicability (for different snow samples with varying chemical composition, pH, and electrical conductivity). The high selectivity, sensitivity, and broad applicability of this method indicate significant potential in the development of practical detection devices for aromatic toxicants in complex environments.
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20
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Affiliation(s)
- Teresa L. Mako
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Joan M. Racicot
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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21
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DiScenza DJ, Lynch J, Verderame M, Smith MA, Levine M. Cyclodextrin-Promoted Fluorescence Detection of Aromatic Toxicants and Toxicant Metabolites in Commercial Milk Products. FOOD ANAL METHOD 2018; 11:2419-2430. [PMID: 30288206 PMCID: PMC6166478 DOI: 10.1007/s12161-018-1228-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 03/06/2018] [Indexed: 11/28/2022]
Abstract
The detection of polycyclic aromatic hydrocarbons (PAHs) and their metabolites in food and in agricultural sources is an important research objective due to the PAHs' known persistence, carcinogenicity, and toxicity. PAHs have been found in the milk of lactating cows, and in the leaves and stems of plants grown in PAH-contaminated areas, thereby making their way into both cow milk and plant milk alternatives. Reported herein is the rapid, sensitive, and selective detection of 10 PAHs and PAH metabolites in a variety of cow milks and plant milk alternatives using fluorescence energy transfer from the PAH to a high quantum yield fluorophore, combined with subsequent array-based statistical analyses of the fluorescence emission signals. This system operates with high sensitivity (low micromolar detection limits), selectivity (100% differentiation even between structurally similar analytes), and general applicability (for both unmodified lipophilic PAHs and highly polar oxidized PAH metabolites, as well as for different cow and plant milk samples). These promising results show significant potential to be translated into solid-state devices for the rapid, sensitive, and selective detection of PAHs and their metabolites in complex, commercial food products.
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Affiliation(s)
| | | | | | | | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881 ; 401-874-4243
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22
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DiScenza DJ, Smith MA, Intravaia LE, Levine M. Efficient Detection of Phthalate Esters in Human Saliva via Fluorescence Spectroscopy. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1471086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Dana J. DiScenza
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
| | - Melissa A. Smith
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
| | | | - Mindy Levine
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
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23
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Chaudhuri S, Verderame M, Mako TL, Bandara YMNDY, Fernando AI, Levine M. Synthetic β‐Cyclodextrin Dimers for Squaraine Binding: Effect of Host Architecture on Photophysical Properties, Aggregate Formation and Chemical Reactivity. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800283] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sauradip Chaudhuri
- Department of Chemistry University of Rhode Island 140 Flagg Road 02881 Kingston RI USA
| | - Molly Verderame
- Department of Chemistry University of Rhode Island 140 Flagg Road 02881 Kingston RI USA
| | - Teresa L. Mako
- Department of Chemistry University of Rhode Island 140 Flagg Road 02881 Kingston RI USA
| | | | - Ashvin I. Fernando
- Department of Chemistry University of Rhode Island 140 Flagg Road 02881 Kingston RI USA
| | - Mindy Levine
- Department of Chemistry University of Rhode Island 140 Flagg Road 02881 Kingston RI USA
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24
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DiScenza DJ, Lynch J, Miller J, Verderame M, Levine M. Detection of Organochlorine Pesticides in Contaminated Marine Environments via Cyclodextrin-Promoted Fluorescence Modulation. ACS OMEGA 2017; 2:8591-8599. [PMID: 30023587 PMCID: PMC6044669 DOI: 10.1021/acsomega.7b00991] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/03/2017] [Indexed: 06/08/2023]
Abstract
The development of practical and robust detection methods for pesticides is an important research objective owing to the known toxicity, carcinogenicity, and environmental persistence of these compounds. Pesticides have been found in bodies of water that are located near areas where pesticides are commonly used and easily spread to beaches, lakes, and rivers; affect the species living in those waterways; and harm humans who come into contact with or eat fish from such water. Reported herein is the rapid, sensitive, and selective detection of four organochlorine pesticides in a variety of water sources across the state of Rhode Island using cyclodextrin-promoted fluorescence detection. This method relies on the ability of cyclodextrin to promote analyte-specific fluorescence modulation of a high quantum yield fluorophore when a pesticide is in close proximity, combined with subsequent array-based statistical analyses of the measurable changes in the emission signals. This system operates with high sensitivity (low micromolar detection limits), selectivity (100% differentiation between structurally similar analytes), and general applicability (for different water samples with varying salinity and pH as well as for different water temperatures).
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Affiliation(s)
- Dana J. DiScenza
- Department of Chemistry, University
of Rhode Island, 140
Flagg Road, Kingston, Rhode
Island 02881, United
States
| | - Julie Lynch
- Department of Chemistry, University
of Rhode Island, 140
Flagg Road, Kingston, Rhode
Island 02881, United
States
| | - Jasmine Miller
- Department of Chemistry, University
of Rhode Island, 140
Flagg Road, Kingston, Rhode
Island 02881, United
States
| | - Molly Verderame
- Department of Chemistry, University
of Rhode Island, 140
Flagg Road, Kingston, Rhode
Island 02881, United
States
| | - Mindy Levine
- Department of Chemistry, University
of Rhode Island, 140
Flagg Road, Kingston, Rhode
Island 02881, United
States
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25
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Towards Rational Chemosensor Design through Improved Understanding of Experimental Parameter Variation and Tolerance in Cyclodextrin-Promoted Fluorescence Detection. CHEMOSENSORS 2017. [DOI: 10.3390/chemosensors5040034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We have previously developed a highly efficient fluorescence-based toxicant-detection method that operates in complex environments to detect aromatic toxicants and toxicant metabolites with high sensitivity and selectivity. This method relies on the ability of γ-cyclodextrin to act as a supramolecular scaffold, and uses a variety of non-covalent interactions between the cyclodextrin, toxicant, and fluorophore to enable efficient detection. Reported herein is an investigation of the effect of various experimental parameters, including host concentration, temperature, pH, salt, and solvent, on the observed energy-transfer efficiencies. These results advance our understanding of γ-cyclodextrin-based association complexes and provide crucial information for the development of fluorescence-based sensors using such complexation and the resultant fluorescence-based detection.
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26
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DiScenza DJ, Lynch J, Verderame M, Serio N, Prignano L, Gareau L, Levine M. Efficient Fluorescence Detection of Aromatic Toxicants and Toxicant Metabolites in Human Breast Milk. Supramol Chem 2017; 30:267-277. [PMID: 30880882 PMCID: PMC6420232 DOI: 10.1080/10610278.2017.1343947] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/14/2017] [Indexed: 02/04/2023]
Abstract
Once chemical contaminants are released into the environment, there are a number of concerns that arise regarding the environmental persistence of the contaminants, their known and suspected toxicities, and their potential disruption to the ecosystem. One class of contaminants that is of continuing concern is polycyclic aromatic hydrocarbons (PAHs), persistent organic pollutants that are significant components of oil spills. PAHs have been found in the breast milk of nursing mothers living in oil spill affected regions, and can harm the nursing children. We report herein the sensitive and selective detection of 10 PAHs and PAH metabolites in human breast milk using fluorescence energy transfer from the PAH to a high quantum yield fluorophore, and array-based statistical analyses of the resulting fluorescence responses. This detection system was able to separate and identify the PAHs with 100% success in human breast milk and at concentrations as low as 0.17 μM. These results have significant implications in public health and in the monitoring and mitigation of environmental disasters.
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Affiliation(s)
- Dana J. DiScenza
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881
| | - Julie Lynch
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881
| | - Molly Verderame
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881
| | - Nicole Serio
- DOE Golden Field Office, Environmental Oversight Office, 15013 Denver West Parkway, Golden, Colorado 80401
| | - Lindsey Prignano
- Department of Chemistry & Biochemistry, Worcester Polytechnic Institute, 60 Prescott Street, Worcester, MA 01609
| | - Lauren Gareau
- School of Public Health, Boston University, 715 Albany Street, Boston, MA 02118
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, RI 02881
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27
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Chaudhuri S, DiScenza DJ, Smith B, Yocum R, Levine M. Array-based detection of isomeric and analogous analytes employing synthetically modified fluorophore attached β-cyclodextrin derivatives. NEW J CHEM 2017. [DOI: 10.1039/c7nj02968c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Improved selectivity and sensitivity using covalent fluorophore–cyclodextrin analogues resulted in 100% successful classification for five classes of analytes.
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Affiliation(s)
| | | | - Benjamin Smith
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
| | - Reid Yocum
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
| | - Mindy Levine
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
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28
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Tamgho IS, Chaudhuri S, Verderame M, DiScenza DJ, Levine M. A highly versatile fluorenone-based macrocycle for the sensitive detection of polycyclic aromatic hydrocarbons and fluoride anions. RSC Adv 2017. [DOI: 10.1039/c7ra05404a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Reported herein is the high yielding synthesis of a new fluorenone-based triazolophane and its sensing capabilities for polycyclic aromatic hydrocarbons (PAHs) and fluoride anions.
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Affiliation(s)
| | | | - Molly Verderame
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
| | | | - Mindy Levine
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
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29
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DiScenza DJ, Gareau L, Serio N, Roque J, Prignano L, Verderame M, Levine M. Cyclodextrin-Promoted Detection of Aromatic Toxicants and Toxicant Metabolites in Urine. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/22297928.2016.1210021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Dana J. DiScenza
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, Rhode Island 02881, United States
| | - Lauren Gareau
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, Rhode Island 02881, United States
| | - Nicole Serio
- Department of Energy, Environmental Oversight Office, 15013 Denver West Parkway, Golden, Colorado 80401, United States
| | - John Roque
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, Rhode Island 02881, United States
| | - Lindsey Prignano
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, Rhode Island 02881, United States
| | - Molly Verderame
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, Rhode Island 02881, United States
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, Rhode Island 02881, United States
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30
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Serio N, Roque J, Badwal A, Levine M. Rapid and efficient pesticide detection via cyclodextrin-promoted energy transfer. Analyst 2016; 140:7503-7. [PMID: 26436147 DOI: 10.1039/c5an01471a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cyclodextrins facilitate non-covalent fluorescence energy transfer from a variety of pesticides to high quantum-yield fluorophores, resulting in a rapid, sensitive detection scheme for these compounds with detection limits as low as two micromolar. Such a facile detection tool has significant potential applications in agriculture and public health research.
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Affiliation(s)
- Nicole Serio
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, RI 02881, USA.
| | - John Roque
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, RI 02881, USA.
| | - Andrew Badwal
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, RI 02881, USA.
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 51 Lower College Road, Kingston, RI 02881, USA.
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31
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Affiliation(s)
- Dana J. DiScenza
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, Kingston, RI, USA
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32
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DiScenza DJ, Levine M. Selective detection of non-aromatic pesticides via cyclodextrin-promoted fluorescence modulation. NEW J CHEM 2016. [DOI: 10.1039/c5nj02357b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The introduction of pesticides to a cyclodextrin-fluorophore solution leads to highly specific fluorescence changes that are used for pesticide detection.
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Affiliation(s)
| | - Mindy Levine
- Department of Chemistry
- University of Rhode Island
- Kingston
- USA
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33
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Radaram B, Levine M. Rationally Designed Supramolecular Organic Hosts for Benzo[a]pyrene Binding and Detection. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500684] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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