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Choi B, Gil D, Lee JJ, Kim C. Selective visual staining of polyurethane microplastics by novel colorimetric and near-infrared (NIR) fluorescent dye: Application to environmental water and natural soil samples. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134332. [PMID: 38643578 DOI: 10.1016/j.jhazmat.2024.134332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 04/02/2024] [Accepted: 04/15/2024] [Indexed: 04/23/2024]
Abstract
Microplastics can cause environmental pollution and ecosystem destruction as well as human health problems. Among the types of microplastics, polyurethane (PU) is particularly resistant to heat and difficult to decompose, causing disposal problems, and is evaluated as one of the most hazardous polymers. We present a novel colorimetric and near-infrared (NIR) fluorescence dye, (E)-N-(2-((4-(diphenylamino)benzylidene)amino)phenyl)- 7-nitrobenzo[c][1,2,5]oxadiazol-4-amine (DPNA), designed for selective visual PU microplastic staining. The intramolecular charge transfer (ICT) properties of DPNA are demonstrated through density functional theory (DFT) calculations along with solvatochromic shift. DPNA exhibits red color and red fluorescence emission, showing promising potential as a staining dye. To achieve selective PU microplastic staining, we establish an optimized experimental procedure with the staining dye DPNA by evaluating the staining efficiency under different staining solvent compositions and staining times. DPNA can distinguish PU by both red fluorescence signal and red coloration among different types of microplastics. In addition, DPNA well stain fresh PUs with diverse sizes and at various pH range of 5-9, and the aged PUs can also be dyed as effectively as the fresh PU. Most importantly, DPNA selectively stains PU among 11 types of microplastics and 5 types of natural particles in environmental water and soil with and without any pre-treatments. The adsorption mechanism of DPNA on PU microplastic is demonstrated through field emission scanning electron microscopes (FE-SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and non-covalent interaction (NCI)-reduced density gradient (RDG) analyses, and proposed that intermolecular hydrogen bonding has a significant effect.
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Affiliation(s)
- Boeun Choi
- Department of Fine Chemistry, Seoul National University of Science and Technology (SNUT), Seoul 01811, South Korea
| | - Dongkyun Gil
- Department of Fine Chemistry, Seoul National University of Science and Technology (SNUT), Seoul 01811, South Korea
| | - Jae Jun Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology (SNUT), Seoul 01811, South Korea
| | - Cheal Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology (SNUT), Seoul 01811, South Korea.
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Park DH, Oh SB, Hong SC. In Situ Fluorescent Illumination of Microplastics in Water Utilizing a Combination of Dye/Surfactant and Quenching Techniques. Polymers (Basel) 2022; 14:polym14153084. [PMID: 35956597 PMCID: PMC9370827 DOI: 10.3390/polym14153084] [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: 06/29/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 01/27/2023] Open
Abstract
Although plastics have benefited our lives in terms of cost and convenience, the disposal of end-of-life plastics poses environmental problems, such as microplastics (MPs). Although the separation (e.g., filtration) and staining of MPs with fluorescent dye/solvent are generally accepted steps to observe MPs in an environmental matrix, in this study, an in situ selective fluorescent illumination of the MPs in water was attempted with the aid of surfactant. Nonpolar fluorescent dye in combination with surfactant affords nanometer-sized dye particles in water, which adsorb on MPs and penetrate the polymer matrix for effective staining and stable fluorescent behaviors. The effects of different staining parameters, including different dyes, surfactants, staining temperatures, staining times, dye/surfactant ratios, dye/MP ratios, and MP concentrations in aqueous solutions were investigated to better understand staining conditions. More interestingly, non-adsorbed free dye molecules in the staining solution were almost completely fluorescence-quenched by introducing the quenching agent, aniline, while the fluorescence intensity of the stained MP was maintained. By staining MPs with a dye/surfactant combination and subsequently quenching with aniline, in situ selective fluorescent illumination of the MPs in water was successfully achieved, which may eliminate the tedious separation/filtration procedure of MPs to accomplish the quick detection or monitoring of MPs.
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Affiliation(s)
| | | | - Sung Chul Hong
- Correspondence: ; Tel.: +82-2-3408-3750; Fax: +82-2-3408-4342
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3
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Battistelli G, Proetto M, Mavridi-Printezi A, Calvaresi M, Danielli A, Constantini PE, Battistella C, Gianneschi NC, Montalti M. Local detection of pH-induced disaggregation of biocompatible micelles by fluorescence switch ON. Chem Sci 2022; 13:4884-4892. [PMID: 35655864 PMCID: PMC9067588 DOI: 10.1039/d2sc00304j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/25/2022] [Indexed: 11/21/2022] Open
Abstract
Fluorogenic nanoparticles (NPs) able to sense different physiological environments and respond with disaggregation and fluorescence switching OFF/ON are powerful tools in nanomedicine as they can combine diagnostics with therapeutic action. pH-responsive NPs are particularly interesting as they can differentiate cancer tissues from healthy ones, they can drive selective intracellular drug release and they can act as pH biosensors. Controlled polymerization techniques are the basis of such materials as they provide solid routes towards the synthesis of pH-responsive block copolymers that are able to assemble/disassemble following protonation/deprotonation. Ring opening metathesis polymerization (ROMP), in particular, has been recently exploited for the development of experimental nanomedicines owing to the efficient direct polymerization of both natural and synthetic functionalities. Here, we capitalize on these features and provide synthetic routes for the design of pH-responsive fluorogenic micelles via the assembly of ROMP block-copolymers. While detailed photophysical characterization validates the pH response, a proof of concept experiment in a model cancer cell line confirmed the activity of the biocompatible micelles in relevant biological environments, therefore pointing out the potential of this approach in the development of novel nano-theranostic agents.
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Affiliation(s)
- Giulia Battistelli
- Department of Chemistry "Giacomo Ciamician" Via Selmi 2 Bologna 40126 Italy
| | - Maria Proetto
- Department of Chemistry Northwestern University Evanston IL 60208 USA
| | | | - Matteo Calvaresi
- Department of Chemistry "Giacomo Ciamician" Via Selmi 2 Bologna 40126 Italy
| | - Alberto Danielli
- FaBiT, Department of Pharmacy & Biotechnology, University of Bologna via Selmi 3 40126 Bologna Italy
| | - Paolo Emidio Constantini
- FaBiT, Department of Pharmacy & Biotechnology, University of Bologna via Selmi 3 40126 Bologna Italy
| | | | - Nathan C Gianneschi
- Department of Chemistry Northwestern University Evanston IL 60208 USA.,Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA.,Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
| | - Marco Montalti
- Department of Chemistry "Giacomo Ciamician" Via Selmi 2 Bologna 40126 Italy
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Karpenko AA, Odintsov VS, Istomina AA. Micro-nano-sized polytetrafluoroethylene (teflon) particles as a model of plastic pollution detection in living organisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:11281-11290. [PMID: 34532808 DOI: 10.1007/s11356-021-16487-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Micro- and nano-sized particles of polytetrafluoroethylene (PTFE) were used as model (reference) particles to study the biological effects of plastic pollution. Since the PTFE molecule contains fluorine, considered as an "atomic marker" sharply distinguishing it from other common plastics, micro- and nano-particles of PTFE have a specific crystalline structure and are, therefore, well identified by the methods of polarized light microscopy (POL), Raman microspectroscopy (micro-Raman), and energy-dispersive spectroscopy (EDS). Examples of PTFE particles detection in hemolimph of the cockroach Blatella germanica, in hemolimph of the larva and in faecal pellets of imago of a fly Lucilia sp., in the stomach and hingat of brine shrimp Artemia salina, and in association with cell wall of green unicellular alga Chlorococcus sp. are provided. The presented results strongly suggest that PTFE particles can be detected and identified in the biological medium using the method of "atomic markers", polarization microscopy and Raman spectroscopy.
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Affiliation(s)
- Alexander A Karpenko
- A.V. Zhirmunsky Institute of Marine Biology, National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences (NSCMB FEB RAS), Vladivostok, Russia
| | - Vyacheslav S Odintsov
- A.V. Zhirmunsky Institute of Marine Biology, National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences (NSCMB FEB RAS), Vladivostok, Russia
| | - Aleksandra A Istomina
- Il'ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences (POI FEB RAS), Vladivostok, Russia.
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Capolungo C, Genovese D, Montalti M, Rampazzo E, Zaccheroni N, Prodi L. Photoluminescence-Based Techniques for the Detection of Micro- and Nanoplastics. Chemistry 2021; 27:17529-17541. [PMID: 34519368 PMCID: PMC9298384 DOI: 10.1002/chem.202102692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Indexed: 11/15/2022]
Abstract
The growing numbers related to plastic pollution are impressive, with ca. 70 % of produced plastic (>350 tonnes/year) being indiscriminately wasted in the environment. The most dangerous forms of plastic pollution for biota and human health are micro‐ and nano‐plastics (MNPs), which are ubiquitous and more bioavailable. Their elimination is extremely difficult, but the first challenge is their detection since existing protocols are unsatisfactory for microplastics and mostly absent for nanoplastics. After a discussion of the state of the art for MNPs detection, we specifically revise the techniques based on photoluminescence that represent very promising solutions for this problem. In this context, Nile Red staining is the most used strategy and we show here its pros and limitations, but we also discuss other more recent approaches, such as the use of fluorogenic probes based on perylene‐bisimide and on fluorogenic hyaluronan nanogels, with the added values of biocompatibility and water solubility.
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Affiliation(s)
- Chiara Capolungo
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Damiano Genovese
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Marco Montalti
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Enrico Rampazzo
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Nelsi Zaccheroni
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Luca Prodi
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via Selmi 2, 40126, Bologna, Italy
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Liu Q, Chen Z, Chen Y, Yang F, Yao W, Xie Y. Microplastics and Nanoplastics: Emerging Contaminants in Food. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10450-10468. [PMID: 34473500 DOI: 10.1021/acs.jafc.1c04199] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
As current concerns about food safety issues around the world are still relatively serious, more and more food safety issues have become the focus of people's attention. What's more serious is that environmental pollution and changes in human lifestyles have also led to the emergence of contaminants in food, microplastics (MPs) and nanoplastics (NPs) being typical representatives. MPs and NPs (M/NPs) in food are gradually becoming recognized by regulatory authorities and the public. Most published reviews on M/NPs have been focused on the environmental ecosystems. In those papers, it is only sporadically mentioned that M/NPs can also appear in food. As far as we know, there has not been a systematic review of the pollution and existing status of M/NPs in food. This Review focuses on the harmfulness of M/NPs, the ways in which M/NPs contaminate food, the residual amount of M/NPs in food, and the current analysis and detection methods for M/NPs in food. Current analysis and detection methods have problems such as being time-consuming, involving cumbersome operation, and giving poor accuracy. In the future, it will be necessary to increase the research on methods for efficient and sensitive separation and detection of M/NPs in food. Finally, it is hoped that this Review will arouse more people's awareness of and attention to the seriousness of M/NPs in food.
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Affiliation(s)
- Qingrun Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Joint International Research Laboratory of Food Safety, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Zhe Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yulun Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Joint International Research Laboratory of Food Safety, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, Inner Mongolia Autonomous Region, China
| | - Fangwei Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Joint International Research Laboratory of Food Safety, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, Inner Mongolia Autonomous Region, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Joint International Research Laboratory of Food Safety, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yunfei Xie
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Joint International Research Laboratory of Food Safety, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
- Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, Inner Mongolia Autonomous Region, China
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