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Jin W, Cheng L, Liu C, Liu H, Jiao Q, Wang H, Deng Z, Seth CS, Guo H, Shi Y. Cadmium negatively affects the growth and physiological status and the alleviation effects by exogenous selenium in silage maize (Zea mays L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:21646-21658. [PMID: 38396179 DOI: 10.1007/s11356-024-32557-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/15/2024] [Indexed: 02/25/2024]
Abstract
Increasing soil cadmium (Cd) contamination is a serious threat to human food health and safety. In order to reduce Cd uptake and Cd toxicity in silage maize, hydroponic tests were conducted to investigate the effect of exogenous Cd on the toxicity of silage maize in this study. In the study, a combination of Cd (5, 20, 50, 80, and 10 μM) treatments was applied in a hydroponic system. With increasing Cd concentration, Cd significantly inhibited the total root length (RL), root surface area (SA), root volume (RV), root tip number (RT), and branching number (RF) of maize seedlings, which were reduced by 28.1 to 71.3%, 20.2 to 64.9%, 11.2 to 56.5%, 43.7 to 63.4%, and 38.2 to 72.6%, respectively. The excessive Cd accumulation inhibited biomass accumulation and reduced silage maize growth, photosynthesis, and chlorophyll content and activated the antioxidant systems, including increasing lipid peroxidation and stimulating catalase (CAT) and peroxidase (POD), but reduced the activity of superoxide dismutase (SOD) and ascorbate peroxidase (APX) in the root. Besides, selenium (Se) significantly decreased the Cd concentration of the shoot and root by 27.1% and 35.1% under Cd50, respectively. Our results reveal that exogenously applied Cd reduced silage maize growth and impaired photosynthesis. Whereas silage maize can tolerate Cd by increasing the concentration of ascorbate and glutathione and activating the antioxidant defense system, the application of exogenous selenium significantly reduced the content of Cd in silage maize.
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Affiliation(s)
- Weihuan Jin
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Lan Cheng
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Chunyan Liu
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Haitao Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, China.
| | - Qiujuan Jiao
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, China
| | - Haoyang Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Zhaolong Deng
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | | | - Hongxiang Guo
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yong Shi
- College of Agronomy, Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, China
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Verma M, Nisha A, Bathla M, Acharya A. Resveratrol-Encapsulated Glutathione-Modified Robust Mesoporous Silica Nanoparticles as an Antibacterial and Antibiofilm Coating Agent for Medical Devices. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58212-58229. [PMID: 38060572 DOI: 10.1021/acsami.3c13733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The emergence of various lethal bacterial infections and their adherence to medical devices are major public health concerns. The increased bacterial exposure and titer are accompanied by the inappropriate use of antibiotics that sometimes lead to antibiotic resistance, and therefore, a drug-free antibacterial approach is required. Several nanoparticles (NPs) have been developed as antibacterial and antibiofilm coating agents, which can overcome different drug resistance mechanisms by inhibiting the important processes related to bacterial virulence potential. However, developing safe and biocompatible nanomaterials (NMs) for these applications has remained a major challenge due to their poorly understood mechanism of action. In this work, biogenic silica NPs were modified with glutathione (GSH) to form GSH@SNP (∼80 ± 15 nm) for targeting the bacterial cell surface and biofilm. GSH@SNP was loaded with resveratrol to obtain Res_GSH@SNP (∼124 ± 15 nm) that enhances the antibacterial activity of the NPs against Staphylococcus aureus and Escherichia coli by ∼51 and ∼49%, respectively, compared to GSH@SNP. Res_GSH@SNP is responsible for binding to the bacterial cell surface receptors that interrupt the cell membrane potential, leading to reactive oxygen species (ROS) generation, membrane disruption, and DNA damage and eventually resulting in antibacterial activity. Moreover, the antibiofilm activity of Res_GSH@SNP has been found to result from the interaction of the NPs with the abundant carbohydrates present on the biofilm surface. To check the practical utility of Res_GSH@SNP, these were further evaluated as an antibacterial and antibiofilm coating agent for urinary catheters and were found to be effective even after multiple washes. Res_GSH@SNP has been found to exhibit ∼80 ± 1.4% cytocompatibility toward fibroblast NIH-3T3 cells. Overall, this study is expected to pave the way for the development of biocompatible NP-based coating agents for medical devices.
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Affiliation(s)
- Mohini Verma
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh 176061, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Anjali Nisha
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh 176061, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Manik Bathla
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh 176061, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amitabha Acharya
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh 176061, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
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Zhong Y, Guo L, Zou Y, Chen Y, Lu Z, Wang D. Rapid and ratiometric fluorescent detection of hypochlorite by glutathione functionalized molybdenum disulfide quantum dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 295:122649. [PMID: 36963221 DOI: 10.1016/j.saa.2023.122649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/09/2023] [Accepted: 03/17/2023] [Indexed: 06/18/2023]
Abstract
We proposed a rapid and ratiometric fluorescent detection method for hypochlorite by glutathione functionalized molybdenum disulfide quantum dots (G-MoS2 QDs). The G-MoS2 QDs were obtained through a hydrothermal method and the maximum fluorescence intensity was obtained at 430 nm under excitation of 360 nm. The fluorescence of G-MoS2 QDs at 430 nm can be weakened by curcumin through the inner filter effect, meanwhile the fluorescence of curcumin at 540 nm appeared. Hypochlorite can fast oxidize curcumin and weaken the inner filter effect, thus the fluorescence of curcumin at 540 nm decreased and the fluorescence of G-MoS2 QDs at 430 nm increased. This process takes only 30 s at room temperature. This is the rationale behind our rapid ratiometric fluorescent detection model for hypochlorite. Two linear detection ranges for hypochlorite are obtained with concentration from 1 to 20 μM and 20 to 30 μM, the limit of detection (LOD) was 11.5 nM. The standard spike recovery tests on milk and tap water samples showed satisfactory results, which extended the application of G-MoS2 QDs in the field of ratiometric fluorescence detection assays.
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Affiliation(s)
- Yaping Zhong
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China.
| | - Lijuan Guo
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China
| | - Yibiao Zou
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China
| | - Yu Chen
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China
| | - Zhentan Lu
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials &Application, Wuhan Textile University, Wuhan 430200, China.
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Jiang Y, Chen X, Yang J, Chang LY, Chan TS, Liu H, Zhu X, Su J, Zhang H, Fan Y, Liu L. The synergetic effect of a gold nanocluster-calcium phosphate composite: enhanced photoluminescence intensity and superior bioactivity. Phys Chem Chem Phys 2022; 24:29034-29042. [PMID: 36427044 DOI: 10.1039/d2cp04222c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Gold nanoclusters (AuNCs) are a unique class of materials that exhibit visible luminescence. Amorphous calcium phosphate (ACP) is a widely used biomaterial for a variety of purposes, such as drug delivery, bone cementing, and implant coatings. In this study, a nanocomposite of AuNCs and ACP is prepared by biomimetic mineralization in a Dulbecco's modified Eagle's medium (DMEM). The strong interaction between AuNCs and Ca2+ ions effectively induces aggregation of AuNCs. The as-formed nanocomposite, AuNCs@ACP, emits significantly enhanced luminescence compared to AuNCs alone. The luminescence enhancement mechanism is investigated using synchrotron X-ray absorption fine structure spectroscopy. In addition, the presence of AuNCs stabilizes ACP and also enhances the biocompatibility of ACP in promoting cell proliferation, and the nanocomposites are promising as nanoprobes for cancer therapy and/or bone tissue engineering.
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Affiliation(s)
- Yingying Jiang
- Musculoskeletal Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China. .,Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
| | - Xin Chen
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
| | - Jingzhi Yang
- Musculoskeletal Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China.
| | - Lo-Yueh Chang
- National Synchrotron Radiation Research Centre, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Centre, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Han Liu
- Musculoskeletal Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China.
| | - Xiaohui Zhu
- Musculoskeletal Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China.
| | - Jiacan Su
- Musculoskeletal Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China.
| | - Hao Zhang
- Musculoskeletal Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China.
| | - Yunshan Fan
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
| | - Lijia Liu
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario, N6A5B7, Canada.
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5
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Green synthesis of AgNO3/glutathione nanoparticles by Eucalyptus Globulus extracts as a novel nanocarrier for using as drug delivery system: study of nonlinear isotherms and kinetics. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04583-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Yang B, Li J, Li Y, Zhang M, Zhu J, Zhou T, Deng J. Electrochemical post-treatment of bimetallic-ICP/RGO precursor for Z-scheme CuOx·Ag2O/RGO hetero-structure with catalytic activity enhancement for visible-light-driven photo-Fenton degradation of tetracycline. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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7
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Zeng HJ, Sun LJ, Qu LB, Yang R. Modulation of bovine serum albumin aggregation by glutathione functionalized MoS 2 quantum dots. Int J Biol Macromol 2022; 195:237-245. [PMID: 34896474 DOI: 10.1016/j.ijbiomac.2021.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 11/05/2022]
Abstract
In present study, a novel glutathione functionalized MoS2 quantum dots (GSH-MoS2 QDs) was synthesized from sodium molybdate dehydrate and glutathione by using a one-pot hydrothermal method. After they were characterized, the influence of GSH-MoS2 QDs on amyloid aggregation of bovine serum albumin (BSA) was investigated by various analytical methods including thioflavin T fluorescence assay, circular dichroism and transmission electron microscope. Moreover, the effect of GSH-MoS2 QDs on cytotoxicity induced by BSA amyloid fibrils and cell penetration were evaluated by MTT assay and confocal fluorescence imaging, respectively. The results indicated that the GSH-MoS2 QDs not only had good water solubility, excellent biocompatibility and low cytotoxicity, but also could obviously inhibit the aggregation of BSA and depolymerize the formed BSA aggregates. The data obtained from this work demonstrated that the GSH-MoS2 QDs is expected to become a candidate drug for the treatment of amyloid-related diseases.
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Affiliation(s)
- Hua-Jin Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Li-Jun Sun
- The College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ling-Bo Qu
- The College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ran Yang
- The College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China.
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8
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Liu C, Li Y, Luo Y, Zhang Y, Zhou T, Deng J. Lab-on-a-ZnO-Submicron-Particle Sensor Array for Monitoring AD upon Cd 2+ Exposure with CSF Tau441% as an Effective Hallmark. Anal Chem 2021; 93:15005-15014. [PMID: 34738809 DOI: 10.1021/acs.analchem.1c02570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this study, based on the posttreatment strategy, blue-color-emissive ZnO submicron particles (B-ZnO SMPs) and red-color-emissive ZnO submicron particles (R-ZnO SMPs) were obtained from rationally designed Zn-infinite coordination polymer (ICP) precursors. After modification of thiol-containing aptamers, diverse spectral changes in the ultraviolet and visible regions of B- and R-ZnO SMPs toward different tau species were explored to construct a lab-on-a-ZnO-submicron-particle sensor array. Assisted by principal component analysis (PCA), the unique fingerprints of the sensor array enabled the simultaneous differentiation and quantitative detection of different tau species (tau381, tau410, and tau441) for the first time. Furthermore, the dynamic changes of tau441% (the ratio of the two most reported representative 4R isoform (full-length tau441) and 3R isoform (tau381)) in cerebrospinal fluid (CSF) during the Alzheimer's disease (AD) onset of Cd2+-exposed rats could also be monitored by the lab-on-a-ZnO-submicron-particle sensor array, which was supposed to be an effective hallmark and highly correlated with the formation of neurofibrillary tangles (NFTs). This study not only provides a further insight into the involvement of subchronic Cd2+ exposure in the tau etiology of AD but also offers more comprehensive and effective information about the asymptomatic stage of AD upon environmental risk, which has potential applications in the early diagnosis and therapy.
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Affiliation(s)
- Chang Liu
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Process and Eco-Restoration, East China Normal University, Shanghai 200241, China.,Institute of Eco-Chongming, 3663 Zhongshan Road, Shanghai 200062, China
| | - Yuanting Li
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Process and Eco-Restoration, East China Normal University, Shanghai 200241, China.,Institute of Eco-Chongming, 3663 Zhongshan Road, Shanghai 200062, China
| | - Yuxin Luo
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Process and Eco-Restoration, East China Normal University, Shanghai 200241, China.,Institute of Eco-Chongming, 3663 Zhongshan Road, Shanghai 200062, China
| | - Ying Zhang
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Process and Eco-Restoration, East China Normal University, Shanghai 200241, China.,Institute of Eco-Chongming, 3663 Zhongshan Road, Shanghai 200062, China
| | - Tianshu Zhou
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Process and Eco-Restoration, East China Normal University, Shanghai 200241, China.,Institute of Eco-Chongming, 3663 Zhongshan Road, Shanghai 200062, China
| | - Jingjing Deng
- School of Ecological and Environmental Sciences, Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai Key Lab for Urban Ecological Process and Eco-Restoration, East China Normal University, Shanghai 200241, China.,Institute of Eco-Chongming, 3663 Zhongshan Road, Shanghai 200062, China
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Preeyanka N, Sarkar M. Probing How Various Metal Ions Interact with the Surface of QDs: Implication of the Interaction Event on the Photophysics of QDs. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6995-7007. [PMID: 34047563 DOI: 10.1021/acs.langmuir.1c00548] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
With an aim to understand the mechanism of interaction between quantum dots (QDs) and various metal ions, fluorescence response of less-toxic and water-soluble glutathione-capped Zn-Ag-In-S (GSH@ZAIS) QDs in the presence of different metal ions has been investigated at both ensemble and single-molecule level. Fourier transform infrared (FT-IR) spectroscopy has also been performed to obtain a molecular level understanding of the interaction event. The steady-state data reveal no significant change in QD emission for alkali and alkaline earth metal ions, while there is a decrease in fluorescence intensity for transition metal (TM) and some heavy transition metal (HTM) ions. Interestingly, a significant fluorescent enhancement (FE) (19-96%) of QDs is found for Cd2+ ions. Time-resolved fluorescence studies reveal that all the three decay components of QDs decrease in the presence of first-row TM ions. However, in the case of Cd2+, the shorter component is found to increase while the longer one decreases. The analysis of data reveals that photoinduced electron transfer is responsible for fluorescence quenching of QDs in the presence of first-row TM ions and destruction/removal of trap/defect states in the case of Cd2+ causes the FE. In FT-IR experiments, a prominent peak at 670 cm-1, corresponding to Cd-S stretching vibrations, indicates strong ground-state interactions between the -SH of GSH and Cd2+ ions. Moreover, a decrease in the diffusion coefficient of QDs in the presence of Cd2+ ions during fluorescence correlation spectroscopy (FCS) studies further substantiates the removal of GSH by Cd2+ from the surface of QDs. The optical output of this study demonstrates that ZAIS can be used for fluorescence signaling of various metal ions and in particular selective detection of Cd2+. More importantly, these results also suggest that Cd2+ can effectively be used for enhancing the fluorescence quantum yield of thiol-capped QDs such as GSH@ZAIS.
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Affiliation(s)
- Naupada Preeyanka
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Jatni, Khurda, Bhubaneswar 752050, Odisha, India
- Homi Bhabha National Institute (HBNI), Mumbai 400 094, India
- Centre for Interdisciplinary Sciences (CIS), NISER, Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Moloy Sarkar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Jatni, Khurda, Bhubaneswar 752050, Odisha, India
- Homi Bhabha National Institute (HBNI), Mumbai 400 094, India
- Centre for Interdisciplinary Sciences (CIS), NISER, Jatni, Khurda, Bhubaneswar 752050, Odisha, India
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10
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Ultra-sensitive facile CdS nanocrystals-based electrochemical biosensor to detect myocardial infarction marker troponin. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Chen CT, Salunke S, Wei TT, Tang YA, Wang YC. Fluorescent Nanohybrids from ZnS/CdSe Quantum Dots Functionalized with Triantennary, N-Hydroxy- p-(4-arylbutanamido)benzamide/Gallamide Dendrons That Act as Inhibitors of Histone Deacetylase for Lung Cancer. ACS APPLIED BIO MATERIALS 2021; 4:2475-2489. [DOI: 10.1021/acsabm.0c01438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chien-Tien Chen
- Department of Chemistry, National Tsing-Hua University, Hsinchu 30013, Taiwan
| | - Santosh Salunke
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
- Department of Chemistry, National Tsing-Hua University, Hsinchu 30013, Taiwan
| | - Tzu-Tang Wei
- Department of Pharmacology, National Cheng Kung University, Tainan 70101, Taiwan
| | - Yen-An Tang
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan 70101, Taiwan
| | - Yi-Ching Wang
- Department of Pharmacology, National Cheng Kung University, Tainan 70101, Taiwan
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12
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Kozhevnikova NS, Markov VF, Maskaeva LN. Chemical Deposition of Metal Sulfides from Aqueous Solutions: From Thin Films to Colloidal Particles. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420120134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Aggregation-Induced Emission Properties of Glutathione and L-Cysteine Capped CdS Quantum Dots and their Application as Zn(II) Probe. J Fluoresc 2020; 30:1601-1609. [PMID: 32780264 DOI: 10.1007/s10895-020-02596-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/28/2020] [Indexed: 12/28/2022]
Abstract
Targeting to obtain better water solubility and stability and less aggregation-caused quenching effects of quantum dots, two kinds of thiol molecules, glutathione and L-cysteine, were firstly united to offer stabilizing ligands for aqueous synthesized CdS quantum dots, which exhibited sensitive aggregation-induced emission properties. Fluorescent intensity of the CdS quantum dots was enhanced about 5 folds by simple solvent exchange from water to 90 vol% PEG200. Restriction of intramolecular motions in an aggregate state was probably the main cause of the phenomenon. At the same time, fluorescent intensity of CdS quantum dots in the presence of zinc ions was able to be enhanced about 2.2 folds. Based on the researches, a handy metal enhanced fluorescent probe for detecting zinc ions was established. And the detection limit was 0.58 μmol/L. Zinc ions as a bridge among CdS quantum dots to form aggregates limited motions of CdS quantum dots to a certain extent and simultaneously enhanced their fluorescence emission intensities. Meanwhile, activation of surface states of CdS quantum dots also led to emission enhancement. Both of the two factors together contributed to the fluorescence enhancement and ultimately to the sensitivity to zinc ion sample detection.
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14
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Wang Y, Xia Y. Near-infrared optically active Cu 2-xS nanocrystals: sacrificial template-ligand exchange integration fabrication and chirality dependent autophagy effects. J Mater Chem B 2020; 8:7921-7930. [PMID: 32756672 DOI: 10.1039/d0tb01223h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We herein report a (sacrificial template-ligand exchange) integration strategy to fabricate near-infrared optically active Cu2-xS nanocrystals (NCs) and further investigate their interactions with cells, autophagy-induced tumor cell death, and photothermal ablation application potential. Starting from oleic acid capped Cu@Cu2-xO NCs, water-soluble and chiral d- and l-cysteine modified Cu2-xS (denoted as d-Cu2-xS and l-Cu2-xS, respectively) NCs have been reliably obtained by ligand exchange (from oleic acid to cysteine) accompanied by the core chemical transformation (from Cu@Cu2-xO to Cu2-xS). The resulting two enantiomeric Cu2-xS NCs have almost identical physicochemical properties including size, morphology, chemical composition, extinction band, peroxidase mimicking activity, and photothermal stability. The only exception is that the d- and l-Cu2-xS NCs exhibit mirror symmetric circular dichroism signals ranging from the ultraviolet to near-infrared region. The cellular uptake of the d-Cu2-xS NCs is about three times higher than that of their enantiomeric counterparts, which is likely attributed to their higher affinity with the cytomembranes of tumor cells (HepG2 and HeLa cells). As a result, a more prominent cellular autophagy proceeds due to the more significant production of highly reactive oxygen species. Then, the ablation of cells can be further enhanced by photothermal effects of the Cu2-xS NCs. Meanwhile, for normal cells, due to very limited cellular uptake effects, little cytotoxicity has been observed for both d- and l-Cu2-xS NCs.
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Affiliation(s)
- Yue Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China.
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15
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Li J, Wang X, Shen M, Shi X. Polyethylenimine-Assisted Generation of Optical Nanoprobes for Biosensing Applications. ACS APPLIED BIO MATERIALS 2020; 3:3935-3955. [PMID: 35025470 DOI: 10.1021/acsabm.0c00536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Detection of analytes in biological systems is pivotal to explore their physiological roles and provide diagnostic and treatment options for related diseases, which however remains a great challenge. Optical nanoprobes that exhibit absorption or fluorescence signal changes in response to the targets of interest have emerged as a versatile class of biosensors in the field. Polyethylenimine (PEI) with abundant amine groups plays indispensable roles in the construction of optical nanoprobes and mediating the sensing processes. After interaction with analytes, PEI-based optical nanoprobes can be induced to form aggregates, be disassembled or separated into individual units, or undergo structure/component alterations. As such, the optical properties of these nanoprobes have corresponding changes, allowing for sensitive and selective detection of a wide variety of analytes in biological environment. Up to now, detections of reactive oxygen species, pH, metal ions, biothiols, neurotransmitters, therapeutic agents, oxygen levels, enzyme activities, and virus/bacteria have been successfully demonstrated using PEI-based optical nanoprobes. Herein, we summarize the recent developments of PEI-based optical nanoprobes for biosensing applications and highlight the probe designs and sensing mechanisms. The existing challenges and prospects regarding biosensing applications of PEI-based optical nanoprobes are also briefly discussed.
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Affiliation(s)
- Jingchao Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Xiaoying Wang
- Xuhui District Center for Disease Control and Prevention, Shanghai 200237, China
| | - Mingwu Shen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China.,CQM-Centro de Quimica da Madeira, Universidade da Madeira, Campus da Penteada, 9020-105 Funchal, Portugal
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16
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Glutathione Modified Fluorescent CdS QDs Synthesized Using Environmentally Benign Pathway for Detection of Mercury Ions in Aqueous Phase. J Fluoresc 2020; 30:773-785. [PMID: 32418161 DOI: 10.1007/s10895-020-02545-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/23/2020] [Indexed: 12/11/2022]
Abstract
An adept, rapid and novel water-soluble glutathione functionalized CdS quantum dots (GSH@CdS QDs) were fabricated using green pathway for sensing of heavy metal contamination prevalent in industrial wastewater. GSH@CdS QDs were facilely synthesized in an aqueous phase reaction and were effectively characterized using FT-IR, XRD, FESEM, HRTEM and EDX techniques. The distinct fluorescence characteristics of GSH@CdS QDs were explored and the QDs showed selective sensitivity towards mercury ions with a low limit of detection of 0.54 nM under optimal conditions. The detailed interaction between GSH@CdS QDs and Hg2+ and the probable fluorescence quenching mechanism were established in this study. In comparison to already reported fluorescent probes, GSH@CdS QDs showed high sensitivity, biocompatibility, long fluorescence stability and convenient removal of mercury ions. Graphical Abstract Facile green route for the fabrication of glutathione capped CdS quantum dots for fluorescence-based detection of toxic Hg2+ ions.
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17
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Yang X, Wang T, Zhang H, Chen Q, Wang B, Wang Y, Meng D. Chiral cysteine selective transport of proteins by CdS nanostructures modified anodic aluminum oxide template. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.04.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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Zhang K, Wang G, Bao M, Wang L, Xie X. Exogenous application of ascorbic acid mitigates cadmium toxicity and uptake in Maize (Zea mays L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:19261-19271. [PMID: 31065988 DOI: 10.1007/s11356-019-05265-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/23/2019] [Indexed: 05/20/2023]
Abstract
Cadmium (Cd) contamination in agricultural soils is a prevalent environmental issue and poses potential threats to food security. Foliar ascorbic acid might prove a potent tool to alleviate toxicity of Cd toxicity in maize. An experiment was conducted with objectives to study exogenous ascorbic acid-modulated improvements in physiochemical attributes of maize under Cd toxicity. The experiment was conducted under completely randomized design. Treatments were comprised of varying concentrations of foliar ascorbic acid viz. 0.0, 0.1, 0.3, and 0.5 mM of AsA. Toxicity of Cd decreased the maize growth, increased lipid peroxidation, disturbed protein metabolism, and reduced the antioxidant defense capabilities compared with the control. However, foliar AsA significantly improved maize growth and development, photosynthetic capabilities, and protein concentrations in Cd-stressed maize plants. Meanwhile, the malondialdehyde contents and hydrogen peroxide accumulation levels in Cd-stressed maize plants decreased remarkably with increasing AsA concentrations. Furthermore, the combined treatments conspicuously boosted activities of superoxide dismutase, peroxidase, catalase, and glutathione reductase under the Cd stress alone. In addition, the application of AsA reduced the Cd uptake by 10.3-12.3% in grains. Conclusively, foliar ascorbic acid alleviated the negative effects of Cd stress in maize and improved photosynthetic processes, osmolytes, and antioxidant defense systems.
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Affiliation(s)
- Kangping Zhang
- College of Agronomy and Biotechnology, Ministry of Education, Southwest University/Engineering Research Center of South Upland Agriculture, Chongqing, 400716, China
| | - Guiyin Wang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Mingchen Bao
- College of Agronomy and Biotechnology, Ministry of Education, Southwest University/Engineering Research Center of South Upland Agriculture, Chongqing, 400716, China
| | - Longchang Wang
- College of Agronomy and Biotechnology, Ministry of Education, Southwest University/Engineering Research Center of South Upland Agriculture, Chongqing, 400716, China.
| | - Xiaoyu Xie
- College of Agronomy and Biotechnology, Ministry of Education, Southwest University/Engineering Research Center of South Upland Agriculture, Chongqing, 400716, China.
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19
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Chen T, Xu Y, Wang L, Jiang W, Jiang W, Xie Z. Room-Temperature Ionic-Liquid-Assisted Microwave Preparation of Tunable Photoluminescent Copper-Indium-Zinc-Sulfide Quantum Dots. Chemistry 2018; 24:16407-16417. [PMID: 30136426 DOI: 10.1002/chem.201803548] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/18/2018] [Indexed: 01/07/2023]
Abstract
A facile approach towards photoluminescent (PL) Cu-In-Zn-S quantum dots (CIZS QDs) has been developed, comprising microwave treatment with the assist of room-temperature ionic liquid (RTIL). Because of its high polarizability, RTIL served as a microwave absorbent, which resulted in the increase of the instantaneous nucleation rate and the rapid synthesis of CIZS QDs at low temperature. Moreover, the surface decoration of QDs with RTIL can passivate the surface defects greatly. The PL intensity of the CIZS QDs depends on the anion species, alkyl chain length of the RTIL, and the metal element ratios of the QDs. On the basis of the variable PL peak position and extended luminescence lifetime of the CIZS QDs, the superior emission behavior of the QDs was confirmed by surface etching with fluoride produced by the hydrolysis of RTIL 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4 ). Moreover, the intermediate alkyl chain length of the RTIL can avoid aggregation, which results in the construction of CIZS QDs with homogenous size distribution. The shape-controlled CIZS QDs show a broadened tunable emission peak from 677 to 579 nm compared with that of QDs prepared by a conventional one-pot method by mixing the raw materials. CIZS QDs also exhibit a high quantum yield (QY) of 24.1 % after coating with a ZnS shell. This method is expected to be a useful technique for the rapid synthesis of multiple QDs with a wider range of emission wavelengths and higher QY for a variety of applications.
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Affiliation(s)
- Ting Chen
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001, P. R. China
| | - Yanqiao Xu
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001, P. R. China
| | - Lianjun Wang
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001, P. R. China.,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Weihui Jiang
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001, P. R. China
| | - Wan Jiang
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001, P. R. China.,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Zhixiang Xie
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333001, P. R. China
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20
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Limiting the Growth of Water-Soluble, Monolayer-Protected Quantum Dots. Int J Anal Chem 2018; 2018:3164347. [PMID: 30057610 PMCID: PMC6051105 DOI: 10.1155/2018/3164347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/10/2018] [Accepted: 05/25/2018] [Indexed: 11/18/2022] Open
Abstract
The growth and solubility of quantum dots (QDs) are important factors that must be examined before these nanoparticles are incorporated into a variety of potential applications. In this work, monolayer-protected CdSe QDs surrounded by water-soluble thiols were prepared using various cadmium salts. The use of a variety of cadmium salts did not have a significant impact on the spectral properties of the CdSe QDs. CdSe QDs were synthesized at rather low temperatures (< 0°C), resulting in slow nanoparticle growth upon subsequent heating of the reaction mixture. The effect of multiple drying and redissolving cycles of the QD samples was examined. The effect of heating temperature on QD growth was studied, with more rapid nanoparticle growth associated with higher temperatures. The results show that QDs can be synthesized at low temperatures and their subsequent growth can be controlled during the heating process.
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21
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Ding S, Liu X, Shi Y, Liu Y, Zhou T, Guo Z, Hu J. Generalized Synthesis of Ternary Sulfide Hollow Structures with Enhanced Photocatalytic Performance for Degradation and Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17911-17922. [PMID: 29741367 DOI: 10.1021/acsami.8b02955] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A series of ternary sulfide hollow structures have been successfully prepared by a facile glutathione (GSH)-assisted one-step hydrothermal route, where GSH acts as the source of sulfur and bubble template. We demonstrate the feasibility and versatility of this in situ gas-bubble template strategy by the fabrication of novel hollow structures of MIn2S4 (M = Cd, Zn, Ca, Mg, and Mn). Interestingly, with the reaction time varying, the hierarchical CdIn2S4 microspheres with controlled internal structures can be regulated from yolk-shell, smaller yolk-shell (yolk-shell with shrunk yolk), hollow, to solid. Under visible-light irradiation, all of our prepared CdIn2S4 samples with different morphologies were photoactivated. In virtue of the appealing hierarchical hollow structure, the yolk-shell-structured CdIn2S4 microspheres exhibited the optimal photocatalytic activity and excellent durability for both the X3B degradation and H2 evolution, which can be ascribed to the synergy-promoting effect of the small crystallite size together with the unique structural advantages of the yolk-shell structure. Thus, we hypothesize that this proof-of-concept strategy paves an example of rational design of hollow structured ternary or multinary sulfides with superior photochemical performance, holding great potential for future multifunctional applications.
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Affiliation(s)
- Shuoping Ding
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education , South-Central University for Nationalities , Wuhan 430074 , P. R. China
| | - Xiufan Liu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education , South-Central University for Nationalities , Wuhan 430074 , P. R. China
| | - Yiqiu Shi
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education , South-Central University for Nationalities , Wuhan 430074 , P. R. China
| | - Ye Liu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education , South-Central University for Nationalities , Wuhan 430074 , P. R. China
| | - Tengfei Zhou
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education , South-Central University for Nationalities , Wuhan 430074 , P. R. China
- Institute for Superconducting and Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, Faculty of Engineering and Information Science , University of Wollongong , North Wollongong , New South Wales 2500 , Australia
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) , Nankai University , Tianjin 300071 , P. R. China
| | - Zaiping Guo
- Institute for Superconducting and Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, Faculty of Engineering and Information Science , University of Wollongong , North Wollongong , New South Wales 2500 , Australia
| | - Juncheng Hu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education , South-Central University for Nationalities , Wuhan 430074 , P. R. China
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22
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Huang PC, Fang H, Xiong JJ, Wu FY. Ultrasensitive turn-on fluorescence detection of Cu 2+ based on p-dimethylaminobenzamide derivative and the application to cell imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:264-269. [PMID: 27673495 DOI: 10.1016/j.saa.2016.09.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 09/07/2016] [Accepted: 09/11/2016] [Indexed: 06/06/2023]
Abstract
A new p-dimethylaminobenzamide derivative based compound BDIH has been synthesized. Cu2+ turned on the fluorescence of compound BDIH with a 1:2 binding stoichiometry. The fluorescent color of compound BDIH shows an evident change from colorless to bright blue upon the addition of Cu2+, which could be visibly detected by the naked eye under UV light at 365nm. More importantly, the detection limit was found to be 0.64nM which is far lower than the maximal allowed concentration of the WHO limit (31.5μM) for drinking water. This selective "turn-on" fluorescence sensor was used to identify Cu2+ in living cells using confocal fluorescence microscopy, indicating that compound BDIH has a potential application for selective detection of Cu2+ in organism.
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Affiliation(s)
- Peng-Cheng Huang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Hao Fang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Jing-Jing Xiong
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Fang-Ying Wu
- College of Chemistry, Nanchang University, Nanchang 330031, China.
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23
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Alghool S, Slebodnick C, Khaled KF. A Manganese-Based Coordination Polymer; Synthesis, Structure and Catalytic Activity. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14655773247783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Atwo-dimensional manganese(II)-based coordination polymer [Mn(L)4(CH3COO)2] [L=1,4-bis(1-imidazolyl)benzene] has been synthesised. Its X-ray structure revealed that the layers of the 2D structure are stacked together by two types of weak interactions extending to form a three-dimensional supramolecular structure. The thermal stability of this coordination polymer is described and the compound has been used as a heterogeneous catalyst in oxidation of cyclohexene to cyclohexene oxide. A density functional study of structural parameters, position of the HOMO and LUMO energies, electrophilicity and global hardness is reported.
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Affiliation(s)
- Samir Alghool
- Department of Chemistry, Faculty of Science, Taif University, 5700, Kingdom of Saudi Arabia
- Department of Chemistry, Faculty of Science, Port Said University, Port Said, 42521, Egypt
| | - Carla Slebodnick
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061, USA
| | - Khaled F. Khaled
- Department of Chemistry, Faculty of Science, Taif University, 5700, Kingdom of Saudi Arabia
- Department of Chemistry, Faculty of Education, Ain Shams University, Cairo, Egypt
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24
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Quantum dots-fluorescence resonance energy transfer-based nanosensors and their application. Biosens Bioelectron 2015; 74:562-74. [DOI: 10.1016/j.bios.2015.06.076] [Citation(s) in RCA: 185] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/26/2015] [Accepted: 06/29/2015] [Indexed: 01/02/2023]
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25
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Guo X, Wang Y, Wu F, Ni Y, Kokot S. The use of tungsten disulfide dots as highly selective, fluorescent probes for analysis of nitrofurazone. Talanta 2015; 144:1036-43. [DOI: 10.1016/j.talanta.2015.07.055] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 07/15/2015] [Accepted: 07/19/2015] [Indexed: 01/05/2023]
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26
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Kozhevnikova NS, Vorokh AS, Uritskaya AA. Cadmium sulfide nanoparticles prepared by chemical bath deposition. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4452] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Jiang T, Song J, Wang H, Ye X, Wang H, Zhang W, Yang M, Xia R, Zhu L, Xu X. Aqueous synthesis of color tunable Cu doped Zn–In–S/ZnS nanoparticles in the whole visible region for cellular imaging. J Mater Chem B 2015; 3:2402-2410. [DOI: 10.1039/c4tb01957a] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cu doped Zn–In–S/ZnS QDs were synthesized for labeling the cytoplasm and their multiple peak emission mechanisms were proposed.
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28
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Chen TH, Nieh CC, Shih YC, Ke CY, Tseng WL. Hydroxyl radical-induced etching of glutathione-capped gold nanoparticles to oligomeric AuI–thiolate complexes. RSC Adv 2015. [DOI: 10.1039/c5ra05159b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fenton reagent reacted with glutathione-capped gold nanoparticles to form oligomeric Au(i)–thiolate complexes.
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Affiliation(s)
- Tzu-Heng Chen
- Department of Chemistry
- National Sun Yat-sen University
- Taiwan
| | - Chih-Chun Nieh
- Department of Chemistry
- National Sun Yat-sen University
- Taiwan
| | - Ya-Chen Shih
- Department of Chemistry
- National Sun Yat-sen University
- Taiwan
| | - Chen-Yi Ke
- Department of Chemistry
- National Sun Yat-sen University
- Taiwan
| | - Wei-Lung Tseng
- Department of Chemistry
- National Sun Yat-sen University
- Taiwan
- School of Pharmacy
- College of Pharmacy
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29
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Huang P, Li S, Gao N, Wu F. Toward selective, sensitive, and discriminative detection of Hg2+ and Cd2+via pH-modulated surface chemistry of glutathione-capped gold nanoclusters. Analyst 2015; 140:7313-21. [DOI: 10.1039/c5an01356a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Heavy metal pollution can exert severe effects on the environment and human health.
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Affiliation(s)
| | - Sha Li
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Nan Gao
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Fangying Wu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
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30
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Ren L, Yang L, Yu P, Wang Y, Mao L. Electrochemical post-treatment of infinite coordination polymers: an effective route to preparation of Pd nanoparticles supported onto carbon nanotubes with enhanced electrocatalytic activity toward ethanol oxidation. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11471-11478. [PMID: 24159926 DOI: 10.1021/am403996d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This study describes an effective method to prepare highly dispersed palladium nanoparticles supported onto single-walled carbon nanotubes (SWNTs) with high electrocatalytic activity toward the oxidation of ethanol. This method is essentially based on electrochemical post-treatment of Pd-based infinite coordination polymer (ICP). The Pd-based ICP is synthesized through the coordination reaction between Zn(2+) and metallo-Schiff base (MSB) to form Zn-MSB-Zn (ZMZ) ICP that precipitates from ethyl ether. The as-formed Zn-MSB-Zn ICP is then subjected to an ion-exchange reaction with Pd(2+) to obtain the Zn-MSB-Pd (ZMP) ICP. To prepare Pd/SWNT nanocomposite, the ZMP ICP is mixed into the SWNT dispersion in N-dimethylformamide (DMF) to form a homogeneous dispersion that is then drop-coated onto a glassy carbon (GC) electrode. Electrochemical post-treatment of ZMP ICP to form Pd/SWNT nanocomposite is thus performed by polarizing the coated electrode at -0.2 V for 600 s in 0.5 M H2SO4. The results obtained with scanning electron microscopy (SEM) and transmission electron microscopy (TEM) reveal that the resulting Pd nanoparticles are highly dispersed onto SWNTs and the particles size are small and narrowly distributed (2.12 ± 0.32 nm). X-ray photoelectron spectroscopy (XPS) analysis shows that, after the electrochemical post-treatment, no detectable ZMP ICP precursors are left on the surface of SWNTs. The electrocatalytic activity of the as-formed Pd/SWNT nanocomposite toward ethanol oxidation is investigated by cyclic voltammetry and chronoamperometry. The results show that the Pd/SWNT nanocomposite prepared here shows a more negative potential and higher mass catalytic activity, as well as higher stability for the oxidation of ethanol than the commercial Pd/C catalyst. This work demonstrates a novel approach to the formation of ultrasmall and highly dispersed Pd/SWNT nanocomposite with enhanced electrocatalytic activity toward ethanol oxidation.
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Affiliation(s)
- Lin Ren
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences , Beijing, 100190, China
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