1
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O’Dea R, Nandi M, Kroll G, Arnold JR, Korley LTJ, Epps TH. Toward Circular Recycling of Polyurethanes: Depolymerization and Recovery of Isocyanates. JACS AU 2024; 4:1471-1479. [PMID: 38665666 PMCID: PMC11040557 DOI: 10.1021/jacsau.4c00013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/29/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024]
Abstract
We report a depolymerization strategy to nearly quantitatively regenerate isocyanates from thermoplastic and thermoset polyurethanes (PUs) and then resynthesize PUs using the recovered isocyanates. To date, chemical/advanced recycling of PUs has focused primarily on the recovery of polyols and diamines under comparatively harsh conditions (e.g., high pressure and temperature), and the recovery of isocyanates has been difficult. Our approach leverages an organoboron Lewis acid to depolymerize PUs directly to isocyanates under mild conditions (e.g., ∼80 °C in toluene) without the need for phosgene or other harsh reagents, and we show that both laboratory-synthesized and commercially sourced PUs can be depolymerized. Furthermore, we demonstrate the utility of the recovered isocyanate in the production of second-generation PUs with thermal properties and molecular weights similar to those of the virgin PUs. Overall, this route uniquely provides an opportunity for circularity in PU materials and can add significant value to end-of-life PU products.
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Affiliation(s)
- Robert
M. O’Dea
- Department
of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
- Center
for Plastics Innovation, University of Delaware, Newark, Delaware 19716, United States
| | - Mridula Nandi
- Department
of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Genevieve Kroll
- Department
of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Jackie R. Arnold
- Department
of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - LaShanda T. J. Korley
- Department
of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
- Center
for Plastics Innovation, University of Delaware, Newark, Delaware 19716, United States
- Department
of Materials Science and Engineering, University
of Delaware, Newark, Delaware 19716, United States
| | - Thomas H. Epps
- Department
of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
- Center
for Plastics Innovation, University of Delaware, Newark, Delaware 19716, United States
- Department
of Materials Science and Engineering, University
of Delaware, Newark, Delaware 19716, United States
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2
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Zhang Z, Zhang Y, Cheng L, Wen F, Feng D, Zhou F, Shi YH, Xu W. AIE/AEE tripodal PEGyl-melphalan supramolecules and detection of trinitrophenol in water. RSC Adv 2024; 14:7910-7914. [PMID: 38449819 PMCID: PMC10915586 DOI: 10.1039/d3ra07252e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 02/15/2024] [Indexed: 03/08/2024] Open
Abstract
Herein, the design of a novel aggregation-induced emission (AIE) supramolecular fluorescence sensor (TA-PEGn) based on a tridentate melphalan derivative and three different molecular weight PEGs is presented. The three TA-PEGn sensors could self-assemble into a supramolecular system in water and show sensitive and selective responses toward trinitrophenol.
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Affiliation(s)
- Zhenghua Zhang
- Yellow River Basin Ecotope Integration of Industry and Education Research Institute, Lanzhou Resources & Environment Voc-Tech University Lanzhou 730022 China
| | - Yonghe Zhang
- Yellow River Basin Ecotope Integration of Industry and Education Research Institute, Lanzhou Resources & Environment Voc-Tech University Lanzhou 730022 China
| | - Liyan Cheng
- Yellow River Basin Ecotope Integration of Industry and Education Research Institute, Lanzhou Resources & Environment Voc-Tech University Lanzhou 730022 China
| | - Fei Wen
- Yellow River Basin Ecotope Integration of Industry and Education Research Institute, Lanzhou Resources & Environment Voc-Tech University Lanzhou 730022 China
| | - Dan Feng
- Yellow River Basin Ecotope Integration of Industry and Education Research Institute, Lanzhou Resources & Environment Voc-Tech University Lanzhou 730022 China
| | - Feng Zhou
- Yellow River Basin Ecotope Integration of Industry and Education Research Institute, Lanzhou Resources & Environment Voc-Tech University Lanzhou 730022 China
| | - Yu-Hua Shi
- WuWei JinCang Bioscience Co., Ltd Hongshagang Chemical Industrial Park Wuwei 733000 China
| | - Weibing Xu
- College of Science, Gansu Agricultural University Lanzhou 730000 China
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3
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Huang Z, Li Q, Xue H, Liao W, Feng Y, Yuan J, Tao L, Wei Y. Synthesis of an aggregation-induced emission (AIE) dye with pH-sensitivity based on tetraphenylethylene-pyridine for fluorescent nanoparticles and its applications in bioimaging and in vitro anti-tumor effect. Colloids Surf B Biointerfaces 2024; 234:113750. [PMID: 38244482 DOI: 10.1016/j.colsurfb.2024.113750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/18/2023] [Accepted: 01/06/2024] [Indexed: 01/22/2024]
Abstract
In this contribution, a novel AIE monomers 2-(4-styrylphenyl)- 1,2-diphenylvinyl)styryl)pyridine (SDVPY) with smart fluorescent pH-sensitivity basing on tetraphenylethylene-pyridine were successfully synthesized for the first time, subsequently, a series of amphiphilic copolymers PEG-PY were achieved by reversible addition-fragmentation chain transfer (RAFT) polymerization of SDVPY and poly(ethylene glycol) methacrylate (PEGMA), which would self-assemble in water solution to form core-shell nanoparticles (PEG-PY FONs) with about 150 nm diameter. The PEG-PY FONs showed obvious fluorescence response to Fe3+, HCO3- and CO32- ions in aqueous solution owing to their smart pH-sensitivity and AIE characteristics, and their maximum emission wavelength could reversibly change from 525 nm to 624 nm. The as-prepared PEG-PY FONs showed also prospective application in cells imaging with the variable fluorescence for different pH cells micro-environment. When PEG-PY copolymers self-assembled with the anti-tumor drug paclitaxel (PTX), the obtained PY-PTX FONs could effectively deliver and release PTX with pH-sensitivity, and could be easily internalized by A549 cells and located at the cytoplasm with high cytotoxicity, which was further confirmed by the Calcein-AM/PI staining of dead and alive A549 cells. Moreover, the flow cytometry results indicated that the PY-PTX FONs could obviously induce the apoptosis of A549 cells, which further showed the great potential of PY-PTX FONs in the application of tumors therapy.
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Affiliation(s)
- Zengfang Huang
- Zhongshan Institute, University of Electronic Science & Technology of China, Zhongshan 528402, PR China; School of Materials and Energy, University of Electronic Science & Technology of China, Chengdu 610054, PR China.
| | - Qiusha Li
- Zhongshan Institute, University of Electronic Science & Technology of China, Zhongshan 528402, PR China; School of Materials and Energy, University of Electronic Science & Technology of China, Chengdu 610054, PR China
| | - Haoyu Xue
- Zhongshan Institute, University of Electronic Science & Technology of China, Zhongshan 528402, PR China
| | - Wenxi Liao
- Zhongshan Institute, University of Electronic Science & Technology of China, Zhongshan 528402, PR China
| | - Yongqi Feng
- Zhongshan Institute, University of Electronic Science & Technology of China, Zhongshan 528402, PR China
| | - Jinying Yuan
- Department of Chemistry, the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, PR China
| | - Lei Tao
- Department of Chemistry, the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, PR China
| | - Yen Wei
- Department of Chemistry, the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, PR China.
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4
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Shao S, Zhang D, Lin B, Han Y. A new highly sensitive fluorescent probe for visualization of phosgene in liquid and gas phases. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123284. [PMID: 37619488 DOI: 10.1016/j.saa.2023.123284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/01/2023] [Accepted: 08/18/2023] [Indexed: 08/26/2023]
Abstract
Phosgene is an important and widely used highly toxic chemical that poses a serious potential threat to public health and property if leaked or abused. Therefore, developing an efficient and convenient detection method for phosgene is of great significance. In this work, we synthesized a novel fluorescent probe, BCyP, based on benzohemicyanine for highly selective and sensitive detection of phosgene in both liquid and gas phases. The probe uses amino alcohol as a specific recognition group for phosgene and does not fluoresce due to the strong intramolecular charge transfer effect (ICT). However, in the presence of phosgene, the amino alcohol part in the probe can form oxazolidinone in situ with phosgene, reducing the ICT effect in the probe molecule and lighting fluorescence, thus realizing the selective phosgene detection. The probe exhibits good specificity towards phosgene, with significant fluorescence enhancement (approximately 400-fold), a remarkable Stokes shift (139 nm), a fast response speed (less than 17 s), and a low detection limit (0.12 ppm). Additionally, we prepared a phosgene detection paper strip loaded with the probe on filter paper and combined it with color recognition software on a smartphone to achieve visual detection of phosgene in the gas phase.
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Affiliation(s)
- Sufang Shao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Deling Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Bin Lin
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yifeng Han
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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Ma C, He J, Wu Y, Li J, Chen J, Zhang Y, Mo J, Xie H, Chi Z, Li Y, Jin Y. Multistimuli-responsive fluorescence behaviours of aggregation-induced emission small-molecule and electrospun nanofibre films for acid-base vapour sensing. LUMINESCENCE 2023; 38:1720-1728. [PMID: 37462124 DOI: 10.1002/bio.4558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 05/29/2023] [Accepted: 06/05/2023] [Indexed: 08/03/2023]
Abstract
Multistimuli-responsive fluorescent materials have garnered great research interest benefited from their practical applications. Two twisted-structure compounds containing tetraphenylethylene (TPE) as the aggregation-induced emission (AIE) group and a pyridine unit as the acid reaction site to obtain new multistimuli-responsive fluorescent compounds (namely, TPECNPy: TPECNPy-2 and TPECNPy-3) were successfully synthesized through a one-step Knoevenagel condensation reaction. The multiple-stimuli response process of TPECNPy was investigated by means of photoluminescence (PL) spectra and emission colour. The results showed that both TPECNPy compounds with excellent AIE abilities displayed reversible emission wavelength and colour changes in response to multiple external stimuli, including grinding-fuming by CH2 Cl2 or annealing and HCl-NH3 vapour fuming. More importantly, fluorescent nanofibre films were prepared by electrospinning a solution of TPECNPy mixed with cellulose acetate (CA), and these exhibited reversible acid-induced discolouration, even with only 1 wt% TPECNPy. The results of this study may inspire strategies for designing multistimuli-responsive materials and preparing fluorescent sensing nanofibre films.
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Affiliation(s)
- Chunping Ma
- Jiangsu Provincial Key Laboratory of Pulp and Paper Science & Technology, Nanjing Forestry University, Nanjing, China
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, China
- School of Materials and Energy Engineering, Guizhou Institute of Technology, Guiyang, China
| | - Jiyin He
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, China
| | - Yancheng Wu
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, China
| | - Junlang Li
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, China
| | - Jiayi Chen
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, China
| | - Yangfan Zhang
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, China
| | - Jinpeng Mo
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, China
| | - Haibo Xie
- Department of Polymer Materials and Engineering, College of Materials and Metullurgy, Guizhou University, Guiyang, China
| | - Zhenguo Chi
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Yang Li
- School of Materials and Energy Engineering, Guizhou Institute of Technology, Guiyang, China
| | - Yongcan Jin
- Jiangsu Provincial Key Laboratory of Pulp and Paper Science & Technology, Nanjing Forestry University, Nanjing, China
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6
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Hu X, Ke Y, Ye H, Zhu B, Rodrigues J, Sheng R. Toward public security monitoring: A perspective of optical molecular probes for phosgene and mustard gas detection. DYES AND PIGMENTS 2023; 216:111379. [DOI: https:/doi.org/10.1016/j.dyepig.2023.111379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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7
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Wang M, Zhao Y, He X, Tang BZ, Liu H, Zhang Y, Han L. A sensitive fluorescence assay based on aggregation-induced emission by copper-free click reaction for rapid ctDNA detection. Talanta 2023; 259:124562. [PMID: 37075517 DOI: 10.1016/j.talanta.2023.124562] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/17/2023] [Accepted: 04/13/2023] [Indexed: 04/21/2023]
Abstract
A fluorescence assay was developed based on aggregation-induced emission for circulating tumor (ctDNA) rapid detection. AIE-based probe (TPE-DNA) was constructed via strain-promoted azide-alkyne cycloaddition reaction between the azide-functionalized TPE-N3 and the dibenzocyclooctyne functionalized DNA. AIE-based assay displayed significant fluorescence signal enhancement for the ctDNA targets. The experimental results were verified and explained based on density functional theory simulations. As a proof-of-concept, the ctDNA as the target was detected to determine the feasibility of the assay. The detection could be done within 10 min with the limit of detection of 39 pM and good selectivity without the assistance of enzyme or nano-materials. Compared with traditional click reaction, the assay has advantages of high efficiency and good biocompatibility. It is promising in rapid diagnostic of cancer marker nucleic acid with further efforts to develop intelligent miniaturized equipment.
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Affiliation(s)
- Min Wang
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, China
| | - Yujuan Zhao
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, China
| | - Xuewen He
- College of Chemistry, Chemical Engineering and Materials Science of Soochow University, Suzhou, Jiangsu, 215123, China
| | - Ben Zhong Tang
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, China
| | - Hong Liu
- Institute of Crystal Materials, Shandong University, Jinan, 250100, China
| | - Yu Zhang
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, China; Shenzhen Research Institute of Shandong University, Shenzhen, 518057, China; State key laboratory of microbial technology and microbial technology institute, Shandong University, Qingdao 266237, China.
| | - Lin Han
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, China; Shenzhen Research Institute of Shandong University, Shenzhen, 518057, China; Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application, Jinan, 250100, China; State key laboratory of microbial technology and microbial technology institute, Shandong University, Qingdao 266237, China.
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8
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Chen X, Wei X, Cheng S, Liu Z, Su Y, Xiong Y, Huang X. High-performance green-emitting AIE nanoparticles for lateral flow immunoassay applications. Mikrochim Acta 2023; 190:56. [PMID: 36645516 DOI: 10.1007/s00604-022-05616-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 12/06/2022] [Indexed: 01/17/2023]
Abstract
Ultrabright green-emissive AIE nanoparticles (AIENPs) were used as signal-amplification probes to enhance the detectability of lateral flow immunoassay (LFIA). The detection performances of the green-emissive AIENP probes in both sandwich and competitive LFIA formats were systematically evaluated. Benefiting from its remarkable fluorescent brightness, the developed AIENP-LFIA showed versatile applicability for the detection of small molecules and macromolecules by using ochratoxin A (OTA) and procalcitonin (PCT) as model analytes, respectively. Under the optimum conditions, the detection limits (LODs) of the fabricated AIENP-LFIA for OTA and PCT were 0.043 ng mL-1 and 0.019 ng mL-1, respectively. These LOD values are significantly lower than those of conventional LFIA methods using gold nanoparticles as signal reporters. In addition, we demonstrated the practical application potential of AIENP-LFIA for the detection of OTA in real maize samples and PCT in real serum samples. These results indicated that the ultrabright green-emissive AIENPs were promising as signal output materials for building high-performance LFIA platform and broadening the application scenarios of LFIA.
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Affiliation(s)
- Xirui Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China
- School of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China
| | - Xiaxia Wei
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China
- School of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China
| | - Song Cheng
- Guangzhou Development District, AIE Institute, Guangzhou, 510530, Huangpu, People's Republic of China
| | - Zilong Liu
- School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Yu Su
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China.
- School of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China.
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China
- School of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China
- Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang, 330047, People's Republic of China
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China.
- School of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China.
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Zeng X, Wang H, Zeng Y, Yang Y, Zhang Z, Li L. Label-free Aptasensor for the Ultrasensitive Detection of Insulin Via a Synergistic Fluorescent Turn-on Strategy Based on G-quadruplex and AIEgens. J Fluoresc 2022; 33:955-963. [PMID: 36538144 DOI: 10.1007/s10895-022-03116-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/07/2022] [Indexed: 12/25/2022]
Abstract
Insulin, the only hormone regulating blood glucose level, is strongly associated with diabetes and its complications. Specific recognition and ultrasensitive detection of insulin are of clinical significance for the early diagnosis and treatment of diabetes. Inspired by aggregation-induced emission, we presented a turn-on label-free fluorescence aptasensor for insulin detection. Quaternized tetraphenylethene salt was synthesized as the fluorescence probe. Guanine-rich aptamer IGA3 was selected as recognition element. Graphene oxide was chosen as the quencher. Under optimized conditions, the fluorescence aptasensor displayed a wide linear range (1.0 pM-1.0 μM) with a low limit of detection (0.42 pM). Furthermore, the aptasensor was successfully applied to detect insulin in human serum. Spiked recoveries were obtained in the range of 96.06%-104.26%. All these results demonstrated that the proposed approach has potential application in the clinical diagnostics of diabetes.
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