951
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Wang W, Wang B, Embrechts H, Damm C, Cadranel A, Strauss V, Distaso M, Hinterberger V, Guldi DM, Peukert W. Shedding light on the effective fluorophore structure of high fluorescence quantum yield carbon nanodots. RSC Adv 2017. [DOI: 10.1039/c7ra04421f] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The unique luminescence properties of carbon nanodots (CDs) originate from pyridone-like fluorophores bound to carbon core.
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952
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Shtepliuk I, Khranovskyy V, Yakimova R. Insights into the origin of the excited transitions in graphene quantum dots interacting with heavy metals in different media. Phys Chem Chem Phys 2017; 19:30445-30463. [DOI: 10.1039/c7cp04711h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Exploring graphene quantum dots (GQDs) is an attractive way to design novel optical and electrochemical sensors for fast and reliable detection of toxic heavy metals (HMs), such as Cd, Hg and Pb.
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Affiliation(s)
- Ivan Shtepliuk
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping
- Sweden
| | | | - Rositsa Yakimova
- Department of Physics
- Chemistry and Biology
- Linköping University
- Linköping
- Sweden
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953
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Skaltsas T, Goulielmaki M, Pintzas A, Pispas S, Tagmatarchis N. Carbon quantum dots/block copolymer ensembles for metal-ion sensing and bioimaging. J Mater Chem B 2017; 5:5397-5402. [DOI: 10.1039/c7tb01352c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Carbon quantum dots/block copolymer/bovine serum albumin nanoensembles for metal ion sensing and bioimaging.
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Affiliation(s)
- T. Skaltsas
- Theoretical and Physical Chemistry Institute
- National Hellenic Research Foundation
- 11635 Athens
- Greece
| | - M. Goulielmaki
- Institute of Biology
- Medicinal and Chemistry and Biotechnology
- National Hellenic Research Foundation
- 11635 Athens
- Greece
| | - A. Pintzas
- Institute of Biology
- Medicinal and Chemistry and Biotechnology
- National Hellenic Research Foundation
- 11635 Athens
- Greece
| | - S. Pispas
- Theoretical and Physical Chemistry Institute
- National Hellenic Research Foundation
- 11635 Athens
- Greece
| | - N. Tagmatarchis
- Theoretical and Physical Chemistry Institute
- National Hellenic Research Foundation
- 11635 Athens
- Greece
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954
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Gao A, Kang YF, Yin XB. Red fluorescence-magnetic resonance dual modality imaging applications of gadolinium containing carbon quantum dots with excitation independent emission. NEW J CHEM 2017. [DOI: 10.1039/c7nj00597k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hybrid carbon quantum dots were prepared with p-phenylenediamine, diethylene triamine pentacetic acid, and Gd3+ hydrothermally. Their excitation-independent red fluorescence and magnetic resonance dual-response was confirmed with zebrafish and mice as models.
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Affiliation(s)
- Ai Gao
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
- China
| | - Yan-Fei Kang
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
- China
| | - Xue-Bo Yin
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
- China
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955
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Han B, Yu M, Pen T, Li Y, Hu X, Xiang R, Hou X, He G. One-step extraction of highly fluorescent carbon quantum dots by a physical method from carbon black. NEW J CHEM 2017. [DOI: 10.1039/c7nj00858a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we introduced a kind of physical method using acetone to directly extract fluorescent carbon quantum dots from ordinary carbon black in one step.
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Affiliation(s)
- Bingyan Han
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Mingbo Yu
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Tingting Pen
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Ying Li
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Xixi Hu
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Rongchao Xiang
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Xufen Hou
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
| | - Gaohong He
- State Key Laboratory of Fine Chemicals
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin
- China
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956
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957
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Omidi M, Yadegari A, Tayebi L. Wound dressing application of pH-sensitive carbon dots/chitosan hydrogel. RSC Adv 2017. [DOI: 10.1039/c6ra25340g] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monitoring the pH of wounds as an essential diagnosis factor during the healing process.
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Affiliation(s)
- Meisam Omidi
- Medical Nanotechnology & Tissue Engineering Research Center
- Shahid Beheshti University of Medical Sciences
- Tehran
- Iran
| | - Amir Yadegari
- Department of Developmental Sciences
- Marquette University School of Dentistry
- Milwaukee
- USA
| | - Lobat Tayebi
- Department of Developmental Sciences
- Marquette University School of Dentistry
- Milwaukee
- USA
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958
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Zhang W, Shi L, Liu Y, Meng X, Xu H, Xu Y, Liu B, Fang X, Li HB, Ding T. Supramolecular interactions via hydrogen bonding contributing to citric-acid derived carbon dots with high quantum yield and sensitive photoluminescence. RSC Adv 2017. [DOI: 10.1039/c7ra02160g] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fluorophores coupled with supramolecules lead to “dot” topologies in citric-acid derived carbon dots under the effect of hydrogen bonding.
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959
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Geng B, Yang D, Zheng F, Zhang C, Zhan J, Li Z, Pan D, Wang L. Facile conversion of coal tar to orange fluorescent carbon quantum dots and their composite encapsulated by liposomes for bioimaging. NEW J CHEM 2017. [DOI: 10.1039/c7nj03005c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Our work has provided a way for the conversion of low-value coal tar into high-value fluorescent carbon materials.
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Affiliation(s)
- Bijiang Geng
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Dewen Yang
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Fengfeng Zheng
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Chen Zhang
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Jing Zhan
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Zhen Li
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Dengyu Pan
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Liang Wang
- Institute of Nanochemistry and Nanobiology
- Shanghai University
- Shanghai 200444
- P. R. China
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960
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Song Y, Li H, Lu F, Wang H, Zhang M, Yang J, Huang J, Huang H, Liu Y, Kang Z. Fluorescent carbon dots with highly negative charges as a sensitive probe for real-time monitoring of bacterial viability. J Mater Chem B 2017; 5:6008-6015. [DOI: 10.1039/c7tb01092c] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Doped carbon dots from a yeast extract were first applied in real-time monitoring of bacterial viability as a nano-thermometer.
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961
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Tian T, Zhong Y, Deng C, Wang H, He Y, Ge Y, Song G. Brightly near-infrared to blue emission tunable silver-carbon dot nanohybrid for sensing of ascorbic acid and construction of logic gate. Talanta 2017; 162:135-142. [DOI: 10.1016/j.talanta.2016.10.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 09/15/2016] [Accepted: 10/02/2016] [Indexed: 02/03/2023]
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962
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Iannazzo D, Ziccarelli I, Pistone A. Graphene quantum dots: multifunctional nanoplatforms for anticancer therapy. J Mater Chem B 2017; 5:6471-6489. [DOI: 10.1039/c7tb00747g] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We review the recent advances in the application of GQDs as innovative nanoplatforms for anticancer therapy and bioimaging.
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Affiliation(s)
- Daniela Iannazzo
- Dipartimento di Ingegneria
- University of Messina
- Contrada Di Dio
- Italy
| | - Ida Ziccarelli
- Dipartimento di Ingegneria
- University of Messina
- Contrada Di Dio
- Italy
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963
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Zhao F, Qian J, Quan F, Wu C, Zheng Y, Zhou L. Aconitic acid derived carbon dots as recyclable “on–off–on” fluorescent nanoprobes for sensitive detection of mercury(ii) ions, cysteine and cellular imaging. RSC Adv 2017. [DOI: 10.1039/c7ra08097b] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aconitic acid is used as a new precursor for fabricating CDs and developing a sensitive “on–off–on” sensor for Hg2+, Cys and cellular imaging.
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Affiliation(s)
- Fengjiao Zhao
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Jiali Qian
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Feifei Quan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Chengxin Wu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Yian Zheng
- Gansu Key Laboratory for Environmental Pollution Prediction and Control
- College of Earth and Environmental Sciences
- Lanzhou University
- Lanzhou 730000
- China
| | - Lei Zhou
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
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964
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Zhou Y, Sun H, Wang F, Ren J, Qu X. How functional groups influence the ROS generation and cytotoxicity of graphene quantum dots. Chem Commun (Camb) 2017; 53:10588-10591. [DOI: 10.1039/c7cc04831a] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we selectively deactivate the ketonic carbonyl, carboxylic, or hydroxyl groups on GQDs and compare their ROS generation ability. The ROS generation ability of GQDs is closely related to these oxygen functional groups, especially for the ketonic carbonyl groups.
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Affiliation(s)
- Ya Zhou
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Hanjun Sun
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Faming Wang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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965
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Emam AN, Loutfy SA, Mostafa AA, Awad H, Mohamed MB. Cyto-toxicity, biocompatibility and cellular response of carbon dots–plasmonic based nano-hybrids for bioimaging. RSC Adv 2017. [DOI: 10.1039/c7ra01423f] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
In this study, hybrid carbon dots–plasmonic nanostructures including carbon dots/polyethyleneimine/gold (C-dots/PEI/Au), and carbon dots/polyethyleneimine/silver (C-dots/PEI/Ag) have been prepared using a MWI method for biomedical imaging.
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Affiliation(s)
- A. N. Emam
- Refractories, Ceramics and Building Materials Department
- National Research Centre
- Cairo
- Egypt
- Nanomedicine and Tissue Engineering Laboratory
| | - Samah A. Loutfy
- Virology and Immunology Unit
- Cancer Biology Department
- National Cancer Institute
- Cairo University
- Cairo
| | - Amany A. Mostafa
- Refractories, Ceramics and Building Materials Department
- National Research Centre
- Cairo
- Egypt
- Nanomedicine and Tissue Engineering Laboratory
| | - H. Awad
- Tanning Materials and Leather Technology Department
- National Research Centre
- Cairo
- Egypt
| | - Mona B. Mohamed
- National Institute of Laser Enhanced Sciences (NILES)
- Cairo University
- Cairo
- Egypt
- Egyptian Nanotechnology Center (EGNC)
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966
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Liu Y, Zhang T, Wang R, Cui H, Song H. A facile and universal strategy for preparation of long wavelength emission carbon dots. Dalton Trans 2017; 46:16905-16910. [DOI: 10.1039/c7dt03089d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Carbon dots (CDs) have emerged as a promising new type of fluorescent nanomaterial, although one of their main problems is the tuning of the emission wavelength toward the long wavelength region.
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Affiliation(s)
- Yanan Liu
- College of Physics
- Jilin University
- Changchun 130012
- China
| | - Tianxiang Zhang
- Collaborative Innovation Centre for Optoelectronic Science & Technology
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province
- College of Optoelectronic Engineering
- Shenzhen University
- Shenzhen
| | - Rong Wang
- College of Physics
- Jilin University
- Changchun 130012
- China
| | - Haining Cui
- College of Physics
- Jilin University
- Changchun 130012
- China
| | - Hongwei Song
- State Key Laboratory for Integrated Optoelectronics
- College of Electronic Science and Engineering
- Jilin University
- Changchun
- China
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967
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Martynenko IV, Litvin AP, Purcell-Milton F, Baranov AV, Fedorov AV, Gun'ko YK. Application of semiconductor quantum dots in bioimaging and biosensing. J Mater Chem B 2017; 5:6701-6727. [DOI: 10.1039/c7tb01425b] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this review we present new concepts and recent progress in the application of semiconductor quantum dots (QD) as labels in two important areas of biology, bioimaging and biosensing.
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Affiliation(s)
- I. V. Martynenko
- BAM Federal Institute for Materials Research and Testing
- 12489 Berlin
- Germany
- ITMO University
- St. Petersburg
| | | | | | | | | | - Y. K. Gun'ko
- ITMO University
- St. Petersburg
- Russia
- School of Chemistry and CRANN
- Trinity College Dublin
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968
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Zhang M, Yuan P, Zhou N, Su Y, Shao M, Chi C. pH-Sensitive N-doped carbon dots–heparin and doxorubicin drug delivery system: preparation and anticancer research. RSC Adv 2017. [DOI: 10.1039/c6ra28345d] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In this study, doxorubicin (DOX) hydrochloride as a model drug, N-doped carbon dots as a drug carrier, and heparin as an auxiliary medicine were selected to design and prepare a multi-functional drug delivery system with pH-triggered drug release.
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Affiliation(s)
- Ming Zhang
- Jiangsu Collaborative Innovation Center for Biological Functional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing
- China
| | - Ping Yuan
- Jiangsu Collaborative Innovation Center for Biological Functional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing
- China
| | - Ninglin Zhou
- Jiangsu Collaborative Innovation Center for Biological Functional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing
- China
| | - Yutian Su
- Jiangsu Collaborative Innovation Center for Biological Functional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing
- China
| | - Maoni Shao
- Jiangsu Collaborative Innovation Center for Biological Functional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing
- China
| | - Cheng Chi
- Jiangsu Collaborative Innovation Center for Biological Functional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing
- China
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969
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Shen C, Ge S, Pang Y, Xi F, Liu J, Dong X, Chen P. Facile and scalable preparation of highly luminescent N,S co-doped graphene quantum dots and their application for parallel detection of multiple metal ions. J Mater Chem B 2017; 5:6593-6600. [DOI: 10.1039/c7tb00506g] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
New and bright N,S co-doped GQDs are synthesized and serve as fluorescence probes for parallel and selective detection of Fe3+, Cu2+ and Ag+ ions in biological and environmental samples.
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Affiliation(s)
- Chao Shen
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- P. R. China
| | - Shuyan Ge
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- P. R. China
| | - Youyou Pang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- P. R. China
| | - Fengna Xi
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- P. R. China
| | - Jiyang Liu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- P. R. China
| | - Xiaoping Dong
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou
- P. R. China
| | - Peng Chen
- Division of Bioengineering
- School of Chemical & Biomedical Engineering
- Nanyang Technological University
- 637457 Singapore
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970
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Li N, Than A, Sun C, Tian J, Chen J, Pu K, Dong X, Chen P. Monitoring Dynamic Cellular Redox Homeostasis Using Fluorescence-Switchable Graphene Quantum Dots. ACS NANO 2016; 10:11475-11482. [PMID: 28024361 DOI: 10.1021/acsnano.6b07237] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Monitoring cellular redox homeostasis is critical to the understanding of many physiological functions ranging from immune reactions to metabolism, as well as to the understanding of pathological development ranging from tumorigenesis to aging. Nevertheless, there is currently a lack of appropriate probes for this ambition, which should be reversibly, sensitively, and promptly responsive to a wide range of physiological oxidants and reductants. In this work, a redox-sensitive fluorescence-switchable probe is designed based on graphene quantum dots (GQDs) functionalized with a chelated redox Fe2+/Fe3+ couple. The underlying mechanism is investigated and discussed. The high sensitivity and fast response are attributable to the fact that the GQD's photoluminescence is highly sensitive to photon-induced electron transfer because of its ultrasmall size and associated prominent quantum confinement effect. Also taking advantages of GQDs' excellent photostability, biocompatibility, and readiness for cell uptake, our reversibly tunable fluorescence probe is employed to monitor in real time the triggered dynamic change of the intracellular redox state. This addition to the limited arsenal of available redox probes shall be useful to the still poorly understood redox biology, as well as for monitoring environment or chemical processes involving redox reactions.
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Affiliation(s)
- Nan Li
- Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive, Singapore 637457
| | - Aung Than
- Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive, Singapore 637457
| | - Chencheng Sun
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) , 30 South Puzhu Road, Nanjing 211816, China
| | - Jingqi Tian
- Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive, Singapore 637457
| | - Jie Chen
- Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive, Singapore 637457
| | - Kanyi Pu
- Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive, Singapore 637457
| | - Xiaochen Dong
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) , 30 South Puzhu Road, Nanjing 211816, China
| | - Peng Chen
- Division of Bioengineering, School of Chemical & Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive, Singapore 637457
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971
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Ciesielski A, Haar S, Aliprandi A, El Garah M, Tregnago G, Cotella GF, El Gemayel M, Richard F, Sun H, Cacialli F, Bonaccorso F, Samorì P. Modifying the Size of Ultrasound-Induced Liquid-Phase Exfoliated Graphene: From Nanosheets to Nanodots. ACS NANO 2016; 10:10768-10777. [PMID: 28024344 DOI: 10.1021/acsnano.6b03823] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ultrasound-induced liquid-phase exfoliation (UILPE) is an established method to produce single- (SLG) and few-layer (FLG) graphene nanosheets starting from graphite as a precursor. In this paper we investigate the effect of the ultrasonication power in the UILPE process carried out in either N-methyl-2-pyrrolidone (NMP) or ortho-dichlorobenzene (o-DCB). Our experimental results reveal that while the SLGs/FLGs concentration of the NMP dispersions is independent of the power of the ultrasonic bath during the UILPE process, in o-DCB it decreases as the ultrasonication power increases. Moreover, the ultrasonication power has a strong influence on the lateral size of the exfoliated SLGs/FLGs nanosheets in o-DCB. In particular, when UILPE is carried out at ∼600 W, we obtain dispersions composed of graphene nanosheets with a lateral size of 180 nm, whereas at higher power (∼1000 W) we produce graphene nanodots (GNDs) with an average diameter of ∼17 nm. The latter nanostructures exhibit a strong and almost excitation-independent photoluminescence emission in the UV/deep-blue region of the electromagnetic spectrum arising from the GNDs' intrinsic states and a less intense (and strongly excitation wavelength dependent) emission in the green/red region attributed to defect states. Notably, we also observe visible emission with near-infrared excitation at 850 and 900 nm, a fingerprint of the presence of up-conversion processes. Overall, our results highlight the crucial importance of the solvent choice for the UILPE process, which under controlled experimental conditions allows the fine-tuning of the morphological properties, such as lateral size and thickness, of the graphene nanosheets toward the realization of luminescent GNDs.
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Affiliation(s)
- Artur Ciesielski
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) and International Center for Frontier Research in Chemistry (icFRC), Université de Strasbourg and Centre National de la Recherche Scientifique (CNRS) , 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Sébastien Haar
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) and International Center for Frontier Research in Chemistry (icFRC), Université de Strasbourg and Centre National de la Recherche Scientifique (CNRS) , 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Alessandro Aliprandi
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) and International Center for Frontier Research in Chemistry (icFRC), Université de Strasbourg and Centre National de la Recherche Scientifique (CNRS) , 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Mohamed El Garah
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) and International Center for Frontier Research in Chemistry (icFRC), Université de Strasbourg and Centre National de la Recherche Scientifique (CNRS) , 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Giulia Tregnago
- Department of Physics and Astronomy (CMMP Group) and London Centre for Nanotechnology, University College London , Gower Street, London WC1E 6BT, United Kingdom
| | - Giovanni F Cotella
- Department of Physics and Astronomy (CMMP Group) and London Centre for Nanotechnology, University College London , Gower Street, London WC1E 6BT, United Kingdom
| | - Mirella El Gemayel
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) and International Center for Frontier Research in Chemistry (icFRC), Université de Strasbourg and Centre National de la Recherche Scientifique (CNRS) , 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Fanny Richard
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) and International Center for Frontier Research in Chemistry (icFRC), Université de Strasbourg and Centre National de la Recherche Scientifique (CNRS) , 8 Allée Gaspard Monge, 67000 Strasbourg, France
| | - Haiyan Sun
- Graphene Labs, Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy
| | - Franco Cacialli
- Department of Physics and Astronomy (CMMP Group) and London Centre for Nanotechnology, University College London , Gower Street, London WC1E 6BT, United Kingdom
| | - Francesco Bonaccorso
- Graphene Labs, Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy
| | - Paolo Samorì
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) and International Center for Frontier Research in Chemistry (icFRC), Université de Strasbourg and Centre National de la Recherche Scientifique (CNRS) , 8 Allée Gaspard Monge, 67000 Strasbourg, France
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972
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The New Graphene Family Materials: Synthesis and Applications in Oxygen Reduction Reaction. Catalysts 2016. [DOI: 10.3390/catal7010001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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973
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Zhou J, Zhou H, Tang J, Deng S, Yan F, Li W, Qu M. Carbon dots doped with heteroatoms for fluorescent bioimaging: a review. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-2043-9] [Citation(s) in RCA: 217] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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974
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Patidar R, Rebary B, Bhadu GR. Fluorescence characteristics of carbon nanoemitters derived from sucrose by green hydrothermal and microwave methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 169:25-29. [PMID: 27314910 DOI: 10.1016/j.saa.2016.06.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 05/19/2016] [Accepted: 06/06/2016] [Indexed: 06/06/2023]
Abstract
In this work, fluorescent carbon nanoparticles (CNPs) were prepared through two green methods i.e. microwave and hydrothermal, using sucrose as carbon precursor. Both of these methods have offered fluorescent CNPs as characterized by TEM, FTIR, zeta potential, absorbance and emission techniques. Excitation dependent emission spectra were exhibited by aqueous dispersion of these CNPs when they were subjected to different excitation wavelengths. The luminous characteristics of CNPs obtained from both of these methods were studied and compared. Their fluorescence stability in water and buffer was monitored for about three months. Influence of pH and various metal ions on emission spectra were investigated.
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Affiliation(s)
- Rajesh Patidar
- Analytical Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research institute, Bhavnagar 364002, Gujarat, India; P.D. Patel Institute of Applied Sciences, Charotar University of Science & Technology, Changa, Anand 388421, Gujarat, India.
| | - Babulal Rebary
- Analytical Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research institute, Bhavnagar 364002, Gujarat, India
| | - Gopala Ram Bhadu
- Analytical Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research institute, Bhavnagar 364002, Gujarat, India
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975
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Chiu SH, Gedda G, Girma WM, Chen JK, Ling YC, Ghule AV, Ou KL, Chang JY. Rapid fabrication of carbon quantum dots as multifunctional nanovehicles for dual-modal targeted imaging and chemotherapy. Acta Biomater 2016; 46:151-164. [PMID: 27662808 DOI: 10.1016/j.actbio.2016.09.027] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 09/16/2016] [Accepted: 09/19/2016] [Indexed: 12/20/2022]
Abstract
Herein, we synthesized an S, N, and Gd tri-element doped magnetofluorescent carbon quantum dots (GdNS@CQDs) within 10min by using a one-pot microwave method. Our results showed that these magnetofluorescent GdNS@CQDs have excellent fluorescent and magnetic properties. Moreover, GdNS@CQDs exhibited high stability at physiological conditions and ionic strength. These magnetofluorescent GdNS@CQDs were conjugated with a folic acid, denoted as FA-GdNS@CQDs, for targeting dual modal fluorescence/magnetic resonance (MR) imaging. The in vitro and in vivo studies confirmed the high biocompatibility and low toxicity of FA-GdNS@CQDs. FA-GdNS@CQDs enhanced the MR response as compared to that for commercial Gd-DTPA. The targeting capabilities of FA-GdNS@CQDs were confirmed in HeLa and HepG2 cells using in vitro fluorescence and MR dual modality imaging. Additionally, an anticancer drug, doxorubicin, was incorporated into the FA-GdNS@CQDs forming FA-GdNS@CQDs-DOX, which enables targeted drug delivery. Importantly, the prepared FA-GdNS@CQDs-DOX showed a high quantity of doxorubicin loading capacity (about 80%) and pH-sensitive drug release. The uptake into cancer cells and the intracellular location of the FA-GdNS@CQDs were observed by confocal laser scanning microscopy. We also successfully demonstrated in vivo fluorescence bio imaging of the FA-GdNS@CQDs, using zebrafish as an animal model. STATEMENT OF SIGNIFICANCE In this manuscript, we reported a facial, rapid, and environmental friendly method to fabricate hetero atoms including gadolinium, nitrogen, and sulfur doped multi-functional magnetofluorescent carbon quantum dots (GdNS@CQDs) nanocomposite. These multifunctional GdNS@CQDs were conjugated with a folic acid for targeting dual modal fluorescence/magnetic resonance imaging. Additionally, an anticancer drug, doxorubicin, was incorporated into the nanocomposite forming FA-GdNS@CQDs-DOX, which enables targeted drug delivery. We have developed GdNS@CQDs with integrated functions for simultaneous in vitro cell imaging, targeting, and pH-sensitive controlled drug release in HeLa cells. Furthermore, we successfully demonstrated the use of this material for in vivo fluorescence imaging, using zebrafish as an animal model.
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Affiliation(s)
- Sheng-Hui Chiu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Gangaraju Gedda
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Wubshet Mekonnen Girma
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Yong-Chien Ling
- Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Anil V Ghule
- Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India.
| | - Keng-Liang Ou
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; School of Dentistry, College of Medicine, China Medical University, Taichung 404, Taiwan; 3D Global Biotechnology Inc., New Taipei City 221, Taiwan; Department of Dentistry, Taipei Medical University-Shuang-Ho Hospital, New Taipei City 235, Taiwan.
| | - Jia-Yaw Chang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 10607, Taiwan.
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976
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Ye HL, Cai SJ, Li S, He XW, Li WY, Li YH, Zhang YK. One-Pot Microwave Synthesis of Water-Dispersible, High Fluorescence Silicon Nanoparticles and Their Imaging Applications in Vitro and in Vivo. Anal Chem 2016; 88:11631-11638. [PMID: 27797177 DOI: 10.1021/acs.analchem.6b03209] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Silicon nanoparticles (SiNPs) have been reported to be synthesized by microwave-assisted methods under high pressure. However, there is still a lack of knowledge about the synthesis of SiNPs via microwave-assisted methods under normal pressure. Here we developed a new, facile, one-pot microwave-assisted method for the synthesis SiNPs (∼4.2 nm) with excellent water solubility under normal pressure by employing glycerol as the solvent. Furthermore, glycerol might be responsible for the photoluminescence quantum yield (PLQY) value up to 47% for the resultant SiNPs. The use of organic solvent could afford less nanoparticle surface defects compared with those prepared in aqueous solution, thus improving the fluorescent efficiency. The as-prepared SiNPs simultaneously featured bright blue-green fluorescence, long lifetime (∼12.8 ns), obvious up-conversion luminescence originating from two-photon absorption, superbly strong photostability, and favorable low toxicity. As a satisfactory probe, the as-synthesized SiNPs were successfully applied in fluorescence imaging of human cervical carcinoma cell lines (HeLa) and zebrafish.
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Affiliation(s)
- Hong-Li Ye
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University , Tianjin 300071, China
| | - Shi-Jiao Cai
- Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine , Tianjin 300071, China
| | - Si Li
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University , Tianjin 300071, China
| | - Xi-Wen He
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University , Tianjin 300071, China
| | - Wen-You Li
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University , Tianjin 300071, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
| | - Yu-Hao Li
- Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine , Tianjin 300071, China
| | - Yu-Kui Zhang
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University , Tianjin 300071, China.,National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
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977
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Yu H, Shi R, Zhao Y, Waterhouse GIN, Wu LZ, Tung CH, Zhang T. Smart Utilization of Carbon Dots in Semiconductor Photocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:9454-9477. [PMID: 27623955 DOI: 10.1002/adma.201602581] [Citation(s) in RCA: 307] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 06/24/2016] [Indexed: 05/17/2023]
Abstract
Efficient capture of solar energy will be critical to meeting the energy needs of the future. Semiconductor photocatalysis is expected to make an important contribution in this regard, delivering both energy carriers (especially H2 ) and valuable chemical feedstocks under direct sunlight. Over the past few years, carbon dots (CDs) have emerged as a promising new class of metal-free photocatalyst, displaying semiconductor-like photoelectric properties and showing excellent performance in a wide variety of photoelectrochemical and photocatalytic applications owing to their ease of synthesis, unique structure, adjustable composition, ease of surface functionalization, outstanding electron-transfer efficiency and tunable light-harvesting range (from deep UV to the near-infrared). Here, recent advances in the rational design of CDs-based photocatalysts are highlighted and their applications in photocatalytic environmental remediation, water splitting into hydrogen, CO2 reduction, and organic synthesis are discussed.
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Affiliation(s)
- Huijun Yu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yufei Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | | | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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978
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Ou L, Song B, Liang H, Liu J, Feng X, Deng B, Sun T, Shao L. Toxicity of graphene-family nanoparticles: a general review of the origins and mechanisms. Part Fibre Toxicol 2016; 13:57. [PMID: 27799056 PMCID: PMC5088662 DOI: 10.1186/s12989-016-0168-y] [Citation(s) in RCA: 396] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/13/2016] [Indexed: 02/06/2023] Open
Abstract
Due to their unique physicochemical properties, graphene-family nanomaterials (GFNs) are widely used in many fields, especially in biomedical applications. Currently, many studies have investigated the biocompatibility and toxicity of GFNs in vivo and in intro. Generally, GFNs may exert different degrees of toxicity in animals or cell models by following with different administration routes and penetrating through physiological barriers, subsequently being distributed in tissues or located in cells, eventually being excreted out of the bodies. This review collects studies on the toxic effects of GFNs in several organs and cell models. We also point out that various factors determine the toxicity of GFNs including the lateral size, surface structure, functionalization, charge, impurities, aggregations, and corona effect ect. In addition, several typical mechanisms underlying GFN toxicity have been revealed, for instance, physical destruction, oxidative stress, DNA damage, inflammatory response, apoptosis, autophagy, and necrosis. In these mechanisms, (toll-like receptors-) TLR-, transforming growth factor β- (TGF-β-) and tumor necrosis factor-alpha (TNF-α) dependent-pathways are involved in the signalling pathway network, and oxidative stress plays a crucial role in these pathways. In this review, we summarize the available information on regulating factors and the mechanisms of GFNs toxicity, and propose some challenges and suggestions for further investigations of GFNs, with the aim of completing the toxicology mechanisms, and providing suggestions to improve the biological safety of GFNs and facilitate their wide application.
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Affiliation(s)
- Lingling Ou
- The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Bin Song
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Huimin Liang
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Jia Liu
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Xiaoli Feng
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Bin Deng
- The General Hospital of People’s Liberation Army, Beijing, China
| | - Ting Sun
- The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Longquan Shao
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
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979
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Ostadhossein F, Pan D. Functional carbon nanodots for multiscale imaging and therapy. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 9. [PMID: 27791335 DOI: 10.1002/wnan.1436] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/02/2016] [Accepted: 09/06/2016] [Indexed: 12/14/2022]
Abstract
As an emerging class of carbon nanomaterials, carbon dots (CDs) have garnered many researchers' interests in the past decade due to their excellent biocompatibility, replete surface functional groups, water dispersibility, and unique photoluminescence. These extraordinary properties have opened new avenues for their advanced application in cell labeling, bioimaging, drug delivery, sensors, and energy-related devices. In this paper, we critically review recent advances in the synthetic strategies and the application of CDs for biological purposes, specifically, imaging and therapy. Finally, a perspective has been given on the potential challenges facing the translation of these materials from the bench to the market. WIREs Nanomed Nanobiotechnol 2017, 9:e1436. doi: 10.1002/wnan.1436 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Fatemeh Ostadhossein
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Carle Foundation Hospital, Urbana, IL, USA
| | - Dipanjan Pan
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Carle Foundation Hospital, Urbana, IL, USA.,Departments of Bioengineering and Materials Science and Engineering, Beckman Institute for Advanced Science and Technology, Institute for Sustainability in Energy and Environment, Urbana, IL, USA
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980
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Sutarlie L, Ow SY, Su X. Nanomaterials-based biosensors for detection of microorganisms and microbial toxins. Biotechnol J 2016; 12. [PMID: 27787955 DOI: 10.1002/biot.201500459] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/22/2016] [Accepted: 09/23/2016] [Indexed: 01/13/2023]
Abstract
Detection of microorganisms and microbial toxins is important for health and safety. Due to their unique physical and chemical properties, nanomaterials have been extensively used to develop biosensors for rapid detection of microorganisms with microbial cells and toxins as target analytes. In this paper, the design principles of nanomaterials-based biosensors for four selected analyte categories (bacteria cells, toxins, mycotoxins, and protozoa cells), closely associated with the target analytes' properties is reviewed. Five signal transducing methods that are less equipment intensive (colorimetric, fluorimetric, surface enhanced Raman scattering, electrochemical, and magnetic relaxometry methods) is described and compared for their sensory performance (in term oflimit of detection, dynamic range, and response time) for all analyte categories. In the end, the suitability of these five sensing principles for on-site or field applications is discussed. With a comprehensive coverage of nanomaterials, design principles, sensing principles, and assessment on the sensory performance and suitability for on-site application, this review offers valuable insight and perspective for designing suitable nanomaterials-based microorganism biosensors for a given application.
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Affiliation(s)
- Laura Sutarlie
- Insitute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Innovis, Singapore
| | - Sian Yang Ow
- Insitute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Innovis, Singapore
| | - Xiaodi Su
- Insitute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Innovis, Singapore.,Department of Chemistry, National University of Singapore, Singapore
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981
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Qi BP, Bao L, Zhang ZL, Pang DW. Electrochemical Methods to Study Photoluminescent Carbon Nanodots: Preparation, Photoluminescence Mechanism and Sensing. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28372-28382. [PMID: 26906145 DOI: 10.1021/acsami.5b11551] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
With unique and tunable photoluminescence (PL) properties, carbon nanodots (CNDs) as a new class of optical tags have been extensively studied. Because of their merits of controllability and sensitivity to the surface of nanomaterials, electrochemical methods have already been adopted to study the intrinsic electronic structures of CNDs. In this review, we mainly deal with the electrochemical researches of CNDs, including preparation, PL mechanism, and biosensing.
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Affiliation(s)
- Bao-Ping Qi
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University , Wuhan 430072, P. R. China
| | - Lei Bao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University , Wuhan 430072, P. R. China
| | - Zhi-Ling Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University , Wuhan 430072, P. R. China
| | - Dai-Wen Pang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology, The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University , Wuhan 430072, P. R. China
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982
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Holt BD, Wright ZM, Arnold AM, Sydlik SA. Graphene oxide as a scaffold for bone regeneration. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 9. [PMID: 27781398 DOI: 10.1002/wnan.1437] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/26/2016] [Accepted: 09/06/2016] [Indexed: 12/12/2022]
Abstract
Graphene oxide (GO), the oxidized form of graphene, holds great potential as a component of biomedical devices, deriving utility from its ability to support a broad range of chemical functionalities and its exceptional mechanical, electronic, and thermal properties. GO composites can be tuned chemically to be biomimetic, and mechanically to be stiff yet strong. These unique properties make GO-based materials promising candidates as a scaffold for bone regeneration. However, questions still exist as to the compatibility and long-term toxicity of nanocarbon materials. Unlike other nanocarbons, GO is meta-stable, water dispersible, and autodegrades in water on the timescale of months to humic acid-like materials, the degradation products of all organic matter. Thus, GO offers better prospects for biological compatibility over other nanocarbons. Recently, many publications have demonstrated enhanced osteogenic performance of GO-containing composites. Ongoing work toward surface modification or coating strategies could be useful to minimize the inflammatory response and improve compatibility of GO as a component of medical devices. Furthermore, biomimetic modifications could offer mechanical and chemical environments that encourage osteogenesis. So long as care is given to assure their safety, GO-based materials may be poised to become the next generation scaffold for bone regeneration. WIREs Nanomed Nanobiotechnol 2017, 9:e1437. doi: 10.1002/wnan.1437 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Brian D Holt
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Zoe M Wright
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Anne M Arnold
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Stefanie A Sydlik
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
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983
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Guo Y, Zhang L, Cao F, Leng Y. Thermal treatment of hair for the synthesis of sustainable carbon quantum dots and the applications for sensing Hg 2. Sci Rep 2016; 6:35795. [PMID: 27762342 PMCID: PMC5071893 DOI: 10.1038/srep35795] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/05/2016] [Indexed: 12/29/2022] Open
Abstract
A facile, simple and low-cost approach for synthesizing highly fluorescent carbon quantum dots (CQDs) from thermal treatment of sustainable hair has been developed. The resultant CQDs exhibited strong blue emission with a quantum yield of 10.75%, excellent photostability and high stability in high salt conditions. As the fluorescence of CQDs can be efficiently quenched by Hg2+, the CQDs can be constructed as a nanosensor for Hg2+ with good sensitivity and selectivity. And as low as 10 nM Hg2+ can be successfully detected.
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Affiliation(s)
- Yongming Guo
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Lianfeng Zhang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Fengpu Cao
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Yumin Leng
- College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China
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984
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985
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986
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Sui X, Luo C, Wang C, Zhang F, Zhang J, Guo S. Graphene quantum dots enhance anticancer activity of cisplatin via increasing its cellular and nuclear uptake. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:1997-2006. [DOI: 10.1016/j.nano.2016.03.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 03/23/2016] [Accepted: 03/31/2016] [Indexed: 01/26/2023]
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987
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Li YJ, Harroun SG, Su YC, Huang CF, Unnikrishnan B, Lin HJ, Lin CH, Huang CC. Synthesis of Self-Assembled Spermidine-Carbon Quantum Dots Effective against Multidrug-Resistant Bacteria. Adv Healthc Mater 2016; 5:2545-2554. [PMID: 27448287 DOI: 10.1002/adhm.201600297] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/08/2016] [Indexed: 11/08/2022]
Abstract
This study reports a two-step method to synthesize spermidine-capped fluorescent carbon quantum dots (Spd-CQDs) and their potential application as an antibacterial agent. Fluorescent carbon quantum dots (CQDs) are synthesized by pyrolysis of ammonium citrate in the solid state and then modified with spermidine by a simple heating treatment without a coupling agent. Spermidine, a naturally occurring polyamine, binds with DNA, lipids, and proteins involved in many important processes within organisms such as DNA stability, and cell growth, proliferation, and death. The antimicrobial activity of the as-synthesized Spd-CQDs (size ≈4.6 nm) has been tested against non-multidrug-resistant E. coli, S. aureus, B. subtilis, and P. aeruginosa bacteria and also multidrug-resistant bacteria, methicillin-resistant S. aureus (MRSA). The minimal inhibitory concentration value of Spd-CQDs is much lower (>25 000-fold) than that of spermidine, indicating their promising antibacterial characteristics. The mechanism of antibacterial activity is investigated, and the results indicate that Spd-CQDs cause significant damage to the bacterial membrane. In vitro cytotoxicity and hemolysis analyses reveal the high biocompatibility of Spd-CQDs. To demonstrate its practical application, in vitro MRSA-infected wound healing studies in rats have been conducted, which show faster healing, better epithelialization, and formation of collagen fibers when Spd-CQDs are used as a dressing material.
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Affiliation(s)
- Yu-Jia Li
- Department of Bioscience and Biotechnology; National Taiwan Ocean University; Keelung 20224 Taiwan
| | - Scott G. Harroun
- Department of Chemistry; Université de Montréal; Montréal Québec H3C 3J7 Canada
| | - Yu-Chia Su
- National Laboratory Animal Center; Taipei 11599 Taiwan
| | | | - Binesh Unnikrishnan
- Department of Bioscience and Biotechnology; National Taiwan Ocean University; Keelung 20224 Taiwan
| | - Han-Jia Lin
- Department of Bioscience and Biotechnology; National Taiwan Ocean University; Keelung 20224 Taiwan
| | - Chia-Hua Lin
- Department of Biotechnology; National Formosa University; Yunlin 63208 Taiwan
| | - Chih-Ching Huang
- Department of Bioscience and Biotechnology; National Taiwan Ocean University; Keelung 20224 Taiwan
- Center of Excellence for the Oceans; National Taiwan Ocean University; Keelung 20224 Taiwan
- School of Pharmacy; College of Pharmacy; Kaohsiung Medical University; Kaohsiung 80708 Taiwan
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988
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Liang L, Kong Z, Kang Z, Wang H, Zhang L, Shen JW. Theoretical Evaluation on Potential Cytotoxicity of Graphene Quantum Dots. ACS Biomater Sci Eng 2016; 2:1983-1991. [PMID: 33440534 DOI: 10.1021/acsbiomaterials.6b00390] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Owing to unique morphology, ultrasmall lateral sizes, and exceptional properties, graphene quantum dots (GQDs) hold great potential in many applications, especially in the field of electrochemical biosensors, bioimaging, drug delivery, et cetera. Its biosafety and potential cytotoxicity to human and animal cells has been a growing concern in recent years. In this work, the potential cytotoxicity of GQDs was evaluated by molecular dynamics simulations. Our simulation demonstrates that small size GQDs could easily permeate into the lipid membrane in a vertical way. It is relatively difficult to permeate into the lipid membrane for GQDs that are larger than GQD61 on the nanosecond time-scale. The thickness of the POPC membrane could even be affected by the small size of GQDs. Free energy calculations revealed that the free energy barrier of GQD permeation through the lipid membrane could greatly change with the change of GQD size. Under high GQD concentration, the GQD molecules could rapidly aggregate in water but disaggregate after entering into the membrane interior. Moreover, high concentrations of GQDs could induce changes in the structure properties and diffusion properties of the lipid bilayer, and it may affect the cell signal transduction. However, GQDs with relatively small size are not large enough to mechanically damage the lipid membrane. Our results suggest that the cytotoxicity of GQDs with small size is low and may be appropriate for biomedical application.
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Affiliation(s)
- Lijun Liang
- College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, No. 1, Second Street, Jianggan District, Hangzhou, 310018, People's Republic of China
| | - Zhe Kong
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, No. 1, Second Street, Jianggan District, Hangzhou, 310018, People's Republic of China
| | - Zhengzhong Kang
- Department of Chemistry, Zhejiang University, Zheda Road 38, Hangzhou, 310028, People's Republic of China.,Division of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Hongbo Wang
- College of Automation, Hangzhou Dianzi University, No. 1, Second Street, Jianggan District, Hangzhou 310018, People's Republic of China
| | - Li Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, No. 2, Second Street, Jianggan District, Hangzhou, 310012, People's Republic of China
| | - Jia-Wei Shen
- School of Medicine, Hangzhou Normal University, Xuelin Street 16, Jianggan District, Hangzhou 310016, People's Republic of China
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989
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Xu G, Zeng S, Zhang B, Swihart MT, Yong KT, Prasad PN. New Generation Cadmium-Free Quantum Dots for Biophotonics and Nanomedicine. Chem Rev 2016; 116:12234-12327. [DOI: 10.1021/acs.chemrev.6b00290] [Citation(s) in RCA: 395] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Gaixia Xu
- Key
Laboratory of Optoelectronics Devices and Systems of Ministry of Education/Guangdong
Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China
- CINTRA
CNRS/NTU/THALES,
UMI 3288, Research Techno Plaza, 50
Nanyang Drive, Border X Block, Singapore 637553, Singapore
| | - Shuwen Zeng
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
- CINTRA
CNRS/NTU/THALES,
UMI 3288, Research Techno Plaza, 50
Nanyang Drive, Border X Block, Singapore 637553, Singapore
| | - Butian Zhang
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | | | - Ken-Tye Yong
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
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990
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Achadu OJ, Britton J, Nyokong T. Graphene Quantum Dots Functionalized with 4-Amino-2, 2, 6, 6-Tetramethylpiperidine-N-Oxide as Fluorescence “Turn-ON” Nanosensors. J Fluoresc 2016; 26:2199-2212. [DOI: 10.1007/s10895-016-1916-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/26/2016] [Indexed: 11/29/2022]
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991
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Ye Q, Yan F, Shi D, Zheng T, Wang Y, Zhou X, Chen L. N, B-doped carbon dots as a sensitive fluorescence probe for Hg 2+ ions and 2,4,6-trinitrophenol detection for bioimaging. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:1-13. [DOI: 10.1016/j.jphotobiol.2016.06.021] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 06/12/2016] [Accepted: 06/13/2016] [Indexed: 12/27/2022]
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992
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Guan M, Li J, Jia Q, Ge J, Chen D, Zhou Y, Wang P, Zou T, Zhen M, Wang C, Shu C. A Versatile and Clearable Nanocarbon Theranostic Based on Carbon Dots and Gadolinium Metallofullerene Nanocrystals. Adv Healthc Mater 2016; 5:2283-94. [PMID: 27385651 DOI: 10.1002/adhm.201600402] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 05/22/2016] [Indexed: 01/13/2023]
Abstract
Nanocarbons such as carbon nanotubes, graphene derivatives, and carbon nanohorns have illustrated their potential uses as cancer theranostics owing to their intrinsic fluorescence or NIR absorbance as well as superior cargo loading capacity. However, some problems still need to be addressed, such as the fates and long-term toxicology of different nanocarbons in vivo and the improvement of their performance in various biomedical imaging-guided cancer therapy systems. Herein, a versatile and clearable nanocarbon theranostic based on carbon dots (CDs) and gadolinium metallofullerene nanocrystals (GFNCs) is first developed, in which GFNCs enhance the tumor accumulation of CDs, and CDs enhance the relaxivity of GFNCs, leading to an efficient multimodal imaging-guided photodynamic therapy in vivo without obvious long-term toxicity. Furthermore, biochemical analysis reveals that the novel nanotheranostic can harmlessly eliminate from the body in a reasonable period of time after exerting diagnostic and therapeutic function.
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Affiliation(s)
- Mirong Guan
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
| | - Jie Li
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
| | - Qingyan Jia
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry (TIPC); Chinese Academy of Sciences; Beijing 100190 China
| | - Jiechao Ge
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry (TIPC); Chinese Academy of Sciences; Beijing 100190 China
| | - Daiqin Chen
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
| | - Yue Zhou
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
| | - Pengfei Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry (TIPC); Chinese Academy of Sciences; Beijing 100190 China
| | - Toujun Zou
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
| | - Mingming Zhen
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
| | - Chunru Wang
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
| | - Chunying Shu
- Key Laboratory of Molecular Nanostructure and Nanotechnology; Institute of Chemistry; Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences; Beijing 100190 China
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993
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Li Y, Liu H, Liu XQ, Li S, Wang L, Ma N, Qiu D. Free-Radical-Assisted Rapid Synthesis of Graphene Quantum Dots and Their Oxidizability Studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8641-9. [PMID: 27506575 DOI: 10.1021/acs.langmuir.6b02422] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
This work reports a modified electrochemical method for rapid and large-scale preparing graphene quantum dots (GQDs) by introduction of active free radicals, which were produced by hydrogen peroxide or ultraviolet radiation. These free radicals can deepen the oxidized or reduced level of working electrode in electrochemical process and thus lead to GQDs with high concentration and small size, but different surface oxidized degree. The improved oxidation and reduction mechanism were analyzed in this work. Meanwhile, the optical properties and oxidizability of GQDs with different surface oxidized degree were investigated. It is found that these GQDs can be used as an oxidizing agent and their oxidizability is related to the degree being oxidized.
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Affiliation(s)
- Yan Li
- Department of Inorganic Nonmetallic Material, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Hui Liu
- Department of Inorganic Nonmetallic Material, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Xin-Qian Liu
- Department of Inorganic Nonmetallic Material, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Sen Li
- Department of Inorganic Nonmetallic Material, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Lifeng Wang
- Department of Inorganic Nonmetallic Material, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Ning Ma
- Department of Inorganic Nonmetallic Material, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
- College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin 150001, China
| | - Dengli Qiu
- Bruker Nano Surface Business (Beijing Office), Beijing 100081, China
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994
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Graphene and Carbon Quantum Dot-Based Materials in Photovoltaic Devices: From Synthesis to Applications. NANOMATERIALS 2016; 6:nano6090157. [PMID: 28335285 PMCID: PMC5224641 DOI: 10.3390/nano6090157] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/13/2016] [Accepted: 08/10/2016] [Indexed: 11/16/2022]
Abstract
Graphene and carbon quantum dots have extraordinary optical and electrical features because of their quantum confinement properties. This makes them attractive materials for applications in photovoltaic devices (PV). Their versatility has led to their being used as light harvesting materials or selective contacts, either for holes or electrons, in silicon quantum dot, polymer or dye-sensitized solar cells. In this review, we summarize the most common uses of both types of semiconducting materials and highlight the significant advances made in recent years due to the influence that synthetic materials have on final performance.
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995
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Fu Z, Li G, Hu Y. Chemiluminescence of nitrogen-rich quantum dots in diperiodatoargentate(III) solution and its application in ferulic acid analysis. Anal Bioanal Chem 2016; 408:8813-8820. [DOI: 10.1007/s00216-016-9786-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/19/2016] [Accepted: 07/08/2016] [Indexed: 11/28/2022]
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996
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Demchenko AP, Dekaliuk MO. The origin of emissive states of carbon nanoparticles derived from ensemble-averaged and single-molecular studies. NANOSCALE 2016; 8:14057-14069. [PMID: 27399599 DOI: 10.1039/c6nr02669a] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
At present, there is no consensus understanding on the origin of photoluminescence of carbon nanoparticles, particularly the so-called carbon dots. Providing comparative analysis of spectroscopic studies in solution and on a single-molecular level, we demonstrate that these particles behave collectively as fixed single dipoles and probably are the quantum emitter entities. Their spectral and lifetime heterogeneity in solutions is explained by variation of the local chemical environment within and around luminescence centers. Hence, the carbon dots possess a unique hybrid combination of fluorescence properties peculiar to dye molecules, their conjugates and semiconductor nanocrystals. It is proposed that their optical properties are due to generation of H-aggregate-type excitonic states with their coherence spreading over the whole nanoparticles.
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Affiliation(s)
- Alexander P Demchenko
- A. V. Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Leontovicha street 9, Kiev, 01601, Ukraine.
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997
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Xiaoyan Z, Yuanyuan J, Zaijun L, Zhiguo G, Guangli W. Improved activity and thermo-stability of the horse radish peroxidase with graphene quantum dots and its application in fluorometric detection of hydrogen peroxide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 165:106-113. [PMID: 27116472 DOI: 10.1016/j.saa.2016.03.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 03/19/2016] [Accepted: 03/29/2016] [Indexed: 06/05/2023]
Abstract
Graphene quantum dots (GQDs) have received extensive concern in many fields such as optical probe, bioimaging and biosensor. However, few reports refer on the influence of GQDs on enzyme performance. The paper reports two kinds of graphene quantum dots (termed as GO-GQDs and N,S-GQDs) that were prepared by cutting of graphene oxide and pyrolysis of citric acid and l-cysteine, and their use for the horse radish peroxidase (HRP) modification. The study reveals that GO-GQDs and N,S-GQDs exhibit an opposite effect on the HRP performance. Only HRP modified with GO-GQDs offers an enhanced activity (more than 1.9 times of pristine enzyme) and thermo-stability. This is because GO-GQDs offer a larger conjugate rigid plane and fewer hydrophilic groups compared to N,S-GQDs. The characteristics can make GO-GQDs induce a proper conformational change in the HRP for the catalytic performance, improving the enzyme activity and thermo-stability. The HRP modified with green luminescent GO-GQDs was also employed as a biocatalyst for sensing of H2O2 by a fluorometric sensor. The colorless tetramethylbenzidine (TMB) is oxidized into blue oxidized TMB in the presence of H2O2 by the assistance of HRP/GO-GQDs, leading to an obvious fluorescence quenching. The fluorescence intensity linearly decreases with the increase of H2O2 concentration in the range from 2×10-9 to 2×10-4M with the detection limit of 6.8×10-10M. The analytical method provides the advantage of sensitivity, stability and accuracy compared with present H2O2 sensors based on the pristine HRP. It has been successfully applied in the determination of H2O2 in real water samples. The study also opens a new avenue for modification of enzyme activity and stability that offers great promise in applications such as biological catalysis, biosensing and enzyme engineering.
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Affiliation(s)
- Zhou Xiaoyan
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Jiang Yuanyuan
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Li Zaijun
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China; The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, Wuxi 214122, China.
| | - Gu Zhiguo
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Wang Guangli
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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998
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Song L, Shi W, Lu C. Confinement Effect in Layered Double Hydroxide Nanoreactor: Improved Optical Sensing Selectivity. Anal Chem 2016; 88:8188-93. [DOI: 10.1021/acs.analchem.6b02000] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Liqing Song
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Wenying Shi
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chao Lu
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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999
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Quantum dot nanoparticle for optimization of breast cancer diagnostics and therapy in a clinical setting. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:1581-92. [DOI: 10.1016/j.nano.2016.02.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 02/02/2016] [Accepted: 02/08/2016] [Indexed: 01/30/2023]
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1000
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Kuo NJ, Chen YS, Wu CW, Huang CY, Chan YH, Chen IWP. One-Pot Synthesis of Hydrophilic and Hydrophobic N-Doped Graphene Quantum Dots via Exfoliating and Disintegrating Graphite Flakes. Sci Rep 2016; 6:30426. [PMID: 27452118 PMCID: PMC4958986 DOI: 10.1038/srep30426] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 07/01/2016] [Indexed: 11/08/2022] Open
Abstract
Graphene quantum dots (GQDs) have drawn tremendous attention on account of their numerous alluring properties and a wide range of application potentials. Here, we report that hydrophilic and hydrophobic N-doped GQDs can be prepared via exfoliating and disintegrating graphite flakes. Various spectroscopic characterizations including TEM, AFM, FTIR, PL, XPS, and Raman spectroscopy demonstrated that the hydrophilic N-doped GQDs (IN-GQDs) and the hydrophobic N-doped GQDs (ON-GQDs) are mono-layered and multi-layered, respectively. In terms of practical aspects, the supercapacitor of an ON-GQDs/SWCNTs composite paper electrode was fabricated and exhibited an areal capacitance of 114 mF/cm(2), which is more than 250% higher than the best reported value to date for a GQDs/carbon nanotube hybrid composite. For IN-GQDs applications, bio-memristor devices of IN-GQDs-albumen combination exhibited on/off current ratios in excess of 10(4) accompanied by stable switching endurance of over 250 cycles. The resistance stability of the high resistance state and the low resistance state could be maintained for over 10(4) s. Moreover, the IN-GQDs exhibited a superior quantum yield (34%), excellent stability of cellular imaging, and no cytotoxicity. Hence, the solution-based method for synchronized production of IN-GQDs and ON-GQDs is a facile and processable route that will bring GQDs-based electronics and composites closer to actualization.
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Affiliation(s)
- Na-Jung Kuo
- Department of Applied Science, National Taitung University, 369, Sec. 2, University Road, Taitung City 95092, Taiwan
| | - Yu-Syuan Chen
- Department of Applied Science, National Taitung University, 369, Sec. 2, University Road, Taitung City 95092, Taiwan
| | - Chien-Wei Wu
- Department of Chemistry, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chun-Yuan Huang
- Department of Applied Science, National Taitung University, 369, Sec. 2, University Road, Taitung City 95092, Taiwan
| | - Yang-Hsiang Chan
- Department of Chemistry, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung, 80424, Taiwan
| | - I-Wen Peter Chen
- Department of Applied Science, National Taitung University, 369, Sec. 2, University Road, Taitung City 95092, Taiwan
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