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Jin XJ, Tan L, Zhao ZQ, Li MC, Zhou QY, Zhang JJ, Lv TB, Deng Q, Wang J, Zeng Z, Deng S, Dai GP. Facile synthesis of graphene quantum dots with red emission and high quantum yield. NEW J CHEM 2023. [DOI: 10.1039/d2nj04491a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Preparation of GQDs for application in cell imaging.
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Affiliation(s)
- Xin-Jian Jin
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Long Tan
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China
| | - Zhi-Qing Zhao
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Meng-Chao Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Qun-Yi Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jing-Jian Zhang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Tong-Bao Lv
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Qiang Deng
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jun Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Zheling Zeng
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Shuguang Deng
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287, USA
| | - Gui-Ping Dai
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
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Berczyński P, Kładna A, Bozdağ Dündar O, Murat HN, Sarı E, Kruk I, Aboul-Enein HY. Preparation and in vitro antioxidant activity of some novel flavone analogues bearing piperazine moiety. Bioorg Chem 2020; 95:103513. [DOI: 10.1016/j.bioorg.2019.103513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/16/2019] [Accepted: 12/16/2019] [Indexed: 01/23/2023]
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3
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Antioxidant flavone functionalized fluorescent and biocompatible metal nanoparticles: Exploring their efficacy as cell imaging agents. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.100278] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Dommett M, Rivera M, Crespo-Otero R. How Inter- and Intramolecular Processes Dictate Aggregation-Induced Emission in Crystals Undergoing Excited-State Proton Transfer. J Phys Chem Lett 2017; 8:6148-6153. [PMID: 29219318 DOI: 10.1021/acs.jpclett.7b02893] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Aggregation-induced emission (AIE) offers a route for the development of luminescent technologies with high quantum efficiencies. Excited-state intramolecular proton transfer (ESIPT) coupled to AIE can produce devices with emission across the visible spectrum. We use a combination of theoretical models to determine the factors that mediate fluorescence in molecular crystals undergoing ESIPT. Using two materials based on 2'-hydroxychalcone as exemplar cases, we analyze how inter- and intramolecular processes determine the emissive properties in the crystal environment. This systematic investigation extends the current interpretation of AIE to polar chromophores with multiple decay pathways. We find that population of nonradiative pathways is dictated by the electronic effects of the substituents and the degree of distortion allowed in the crystal environment. Localization of the electron density is crucial to maximize fluorescence via ESIPT. Our conclusions offer design strategies for the development of luminescent molecular crystals.
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Affiliation(s)
- Michael Dommett
- School of Biological and Chemical Sciences, Materials Research Institute, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Miguel Rivera
- School of Biological and Chemical Sciences, Materials Research Institute, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
| | - Rachel Crespo-Otero
- School of Biological and Chemical Sciences, Materials Research Institute, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
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Ding H, Wei JS, Zhong N, Gao QY, Xiong HM. Highly Efficient Red-Emitting Carbon Dots with Gram-Scale Yield for Bioimaging. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12635-12642. [PMID: 29039949 DOI: 10.1021/acs.langmuir.7b02385] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Carbon dots (CDs) are a new class of photoluminescent (PL), biocompatible, environment-friendly, and low-cost carbon nanomaterials. Synthesis of highly efficient red-emitting carbon dots (R-CDs) on a gram scale is a great challenge at present, which heavily restricts the wide applications of CDs in the bioimaging field. Herein, R-CDs with a high quantum yield (QY) of 53% are produced on a gram scale by heating a formamide solution of citric acid and ethylenediamine. The as-prepared R-CDs have an average size of 4.1 nm and a nitrogen content of about 30%, with an excitation-independent emission at 627 nm. After detailed characterizations, such strong red fluorescence is ascribed to the contribution from the nitrogen- and oxygen-related surface states and the nitrogen-derived structures in the R-CD cores. Our R-CDs show good photostability and low cytotoxicity, and thus they are excellent red fluorescence probes for bioimaging both in vitro and in vivo.
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Affiliation(s)
- Hui Ding
- College of Chemical Engineering, China University of Mining and Technology , Xuzhou 221008, Jiangsu, P. R. China
| | - Ji-Shi Wei
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University , Shanghai 200433, P. R. China
| | - Ning Zhong
- College of Chemical Engineering, China University of Mining and Technology , Xuzhou 221008, Jiangsu, P. R. China
| | - Qing-Yu Gao
- College of Chemical Engineering, China University of Mining and Technology , Xuzhou 221008, Jiangsu, P. R. China
| | - Huan-Ming Xiong
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University , Shanghai 200433, P. R. China
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Das S, Alam MN, Batuta S, Ahamed G, Fouzder C, Kundu R, Mandal D, Begum NA. Exploring the efficacy of Basella alba mucilage towards the encapsulation of the hydrophobic antioxidants for their better performance. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.06.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Choi Y, Kim S, Choi Y, Song J, Kwon TH, Kwon OH, Kim BS. Morphology Tunable Hybrid Carbon Nanosheets with Solvatochromism. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701075. [PMID: 28417510 DOI: 10.1002/adma.201701075] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 03/13/2017] [Indexed: 05/24/2023]
Abstract
The tunable photoluminescence of carbon-based nanomaterials has received much attention for a wide range of applications. Herein, a unique, broad-solvatochromic hybrid carbon nanosheet (CNS) synthesized through the hydrothermal carbonization of molecular precursors exploiting graphene oxide as a template is reported, resulting in the formation of clusters of carbon nanorings on the surface of graphene-oxide nanosheets. Under UV and visible-light excitation, the hybrid CNS exhibits tunable emission spanning the wide range of colors in a series of solvents with different polarities. This interesting spectroscopic behavior is found to originate from hydrogen-bonding interactions between CNS and solvents, which eventually induce the morphological transition of CNS from 2D sheets to 3D crumpled morphologies, affecting the lifetimes of emissive states. This novel soft carbon nanostructure may open up a new possibility in tailoring the photophysical properties of carbon nanomaterials.
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Affiliation(s)
- Yuri Choi
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Sunghu Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Yeongkyu Choi
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Jaeeun Song
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Tae-Hyuk Kwon
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Oh-Hoon Kwon
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, 44919, Korea
| | - Byeong-Su Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
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Antioxidant flavone analog functionalized fluorescent silica nanoparticles: Synthesis and exploration of their possible use as biomolecule sensor. Colloids Surf B Biointerfaces 2017; 157:286-296. [PMID: 28601757 DOI: 10.1016/j.colsurfb.2017.05.074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/23/2017] [Accepted: 05/29/2017] [Indexed: 12/18/2022]
Abstract
For the first time, a synthetic fluorescent antioxidant flavone analog was successfully anchored onto the surface of the APTES-modified mesoporous silica nanoparticles (NPs) through sulfonamide linkage. The surface chemistry and morphology of the flavone modified fluorescent silica (FMFS) NPs were studied in detail. The flavone moiety when attached onto the FMFS NP surface, imparted its characteristic fluorescence and antioxidant activities to these NPs. Moreover, the NPs are highly biocompatible as evidenced from their cytotoxicity assay on normal lung cell (L132). The fluorescence activity of these biocompatible NPs was further utilized to study their interaction with a biomolecule, BSA (Bovine Serum Albumin). It was interesting to note that the fluorescence behavior of FMFS NPs completely changed on their binding with BSA. On the other hand, the intrinsic fluorescence activity of BSA was also significantly modified due to its interaction with FMFS NPs. Thus, the sensing and detection of biomolecules like BSA in presence of FMFS NPs can be accomplished by monitoring changes in the fluorescence behavior of either FMFS NPs or BSA. Furthermore, these FMFS NPs retained their intrinsic fluorescence behavior in the cellular medium which opens up their possible use as biocompatible cell imaging agents in future.
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Ghosh D, Ahamed G, Batuta S, Begum NA, Mandal D. 3′,4′-methylenedioxy-3-hydroxyflavone: switchover from reversible to irreversible ESIPT along the n-alcohol series. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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