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He LB, Shangguan L, Ran YT, Zhu C, Lu ZY, Zhu JH, Yu DJ, Kan CX, Sun LT. Revealing the alloying and dealloying behaviours in AuAg nanorods by thermal stimulus. NANOSCALE ADVANCES 2023; 5:685-692. [PMID: 36756526 PMCID: PMC9890656 DOI: 10.1039/d2na00746k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/07/2022] [Indexed: 06/18/2023]
Abstract
Binary metallic nanocrystals are attractive as they offer an extra degree of freedom for structure and phase modulation to generate synergistic effects and extraordinary properties. However, whether the binary structures and phases at the nanoscale still follow the rules established on the bulk counterparts remains unclear. In this work, AuAg nanorods were used as a sample to probe into this issue. An in situ heating method by combining aberration-corrected transmission electron microscopes with a chip-based heating holder was employed to perform the heating experiments. It was found that the AuAg nanorods, which initially possessed heterostructures, can be designed and engineered to be gradient phase alloys with thermal pulses over 350 °C. Atomic diffusion inside the rod structures did not alter the shape of the rods but provided a route to fine-tune their properties. At higher temperatures, the discrepant sublimation behaviours between Au and Ag lead to dealloying of the nanorods. Durative sublimation of the Ag element can continuously tailor the lengths of the nanorods while concentrating the Au composition simultaneously. Especially, nearly pure Au nanocrystals can be obtained with the depletion of Ag by sublimation. These findings give insights into the nanoscale structure and phase behaviours in binary alloys and provide an alternative way to fine-tune their structure, phase, and properties.
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Affiliation(s)
- Long-Bing He
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
- Centre for Advanced Materials and Manufacture, Joint Research Institute of Southeast University and Monash University Suzhou 215123 P. R. China
| | - Lei Shangguan
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
| | - Ya-Ting Ran
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
| | - Chao Zhu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
| | - Zi-Yu Lu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
| | - Jiong-Hao Zhu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
| | - Dao-Jiang Yu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
| | - Cai-Xia Kan
- College of Physics, Nanjing University of Aeronautics and Astronautics No. 29 Jiangjun Road Nanjing 211106 P. R. China
| | - Li-Tao Sun
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University Nanjing 210096 P. R. China
- Centre for Advanced Materials and Manufacture, Joint Research Institute of Southeast University and Monash University Suzhou 215123 P. R. China
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Synthesis of gold and copper bimetallic nanoclusters with papain for fluorescence detection of cortisone in biological samples. Anal Bioanal Chem 2023; 415:335-343. [PMID: 36355222 DOI: 10.1007/s00216-022-04412-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/15/2022] [Accepted: 10/28/2022] [Indexed: 11/11/2022]
Abstract
In this work, bimetallic gold and copper nanoclusters (Au-Cu NCs) were fabricated by using papain as a ligand. The as-synthesized papain-Au-Cu NCs displayed red fluorescence at 365 nm of UV lamp. The as-prepared papain-Au-Cu NCs display a strong fluorescence at 656 nm when excited at 390 nm. Papain encapsulated Au-Cu NCs exhibit distinct interaction site towards cortisone, which results red fluorescence "turn-off". Papain-Au-Cu NCs exhibited a rapid response and remarkable fluorescence quenching with the addition of cortisone as a biomarker. The developed probe is demonstrated for the quantification of cortisone by plotting the calibration graph between the fluorescence ratio (I0/I) and cortisone concentration (0.031-1.00 μM) with an impressive detection limit of 1.89 nM. Interestingly, the response of papain-Au-Cu NCs towards other biomarkers and common interfering species is quite silent, signifying the selectivity of papain-Au-Cu NCs for the detection of cortisone. The probe was successfully applied to assay cortisone biomarker in urine and plasma samples. More importantly, the analytical validation of the probe was assessed by assaying cortisone in intra- and inter-day, demonstrating papain-Au-Cu NCs could serve as promising probe for the rapid detection of cortisone in biological samples.
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3
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First Principal Study of Interaction of Copper Doped Gold Nanoclusters with Glycine. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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4
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Lin Y, Yang C, Huang Y, Chang H. Fluorescent carbon dots and noble metal nanoclusters for sensing applications: Minireview. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yu‐Feng Lin
- Department of Chemistry National Taiwan University Taipei Taiwan
| | - Cheng‐Ruei Yang
- Department of Chemistry National Taiwan University Taipei Taiwan
| | - Yu‐Fen Huang
- Institute of Analytical and Environmental Sciences College of Nuclear Science, National Tsing Hua University Hsinchu Taiwan
- Department of Biomedical Engineering and Environmental Sciences National Tsing Hua University Hsinchu Taiwan
- School of Pharmacy College of Pharmacy, Kaohsiung Medical University Kaohsiung Taiwan
| | - Huan‐Tsung Chang
- Department of Chemistry National Taiwan University Taipei Taiwan
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Ziefuss AR, Willeke M, Miertz M, Heinemann A, Rehbock C, Barcikowski S. Influence of Pt alloying on the fluorescence of fully inorganic, colloidal gold nanoclusters. Chemphyschem 2022; 23:e202200033. [PMID: 35380738 PMCID: PMC9321736 DOI: 10.1002/cphc.202200033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/31/2022] [Indexed: 11/25/2022]
Abstract
Noble metal alloy nanoclusters (NCs) are interesting systems as the properties of two or more elements can be combined in one particle, leading to interesting fluorescence phenomena. However, previous studies have been exclusively performed on ligand‐capped NCs from wet chemical synthesis. This makes it difficult to differentiate to which extent the fluorescence is affected by ligand‐induced effects or the elemental composition of the metal core. In this work, we used laser fragmentation in liquids (LFL) to fabricate colloidal gold‐rich bi‐metallic AuPt NCs in the absence of organic ligands and demonstrate the suitability of this technique to produce molar fraction series of 1nm alloy NC. We found that photoluminescence of ligand‐free NCs is not a phenomenon limited to Au. However, even minute amounts of Pt atoms in the AuPt NCs lead to quenching and red‐shift of the fluorescence, which may be attributed to the altered surface charge density.
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Affiliation(s)
- Anna R Ziefuss
- University of Duisburg-Essen - Campus Essen: Universitat Duisburg-Essen - Campus Essen, Technical chemistry I, GERMANY
| | - Michael Willeke
- University of Duisburg-Essen - Campus Essen: Universitat Duisburg-Essen - Campus Essen, Tecnical Chemistry I, GERMANY
| | - Matthias Miertz
- University of Duisburg-Essen - Campus Essen: Universitat Duisburg-Essen - Campus Essen, Technical chemistry I, GERMANY
| | - Alexander Heinemann
- University of Duisburg-Essen - Campus Essen: Universitat Duisburg-Essen - Campus Essen, Technical chemistry I, GERMANY
| | - Christoph Rehbock
- Universität Duisburg-Essen - Campus Essen: Universitat Duisburg-Essen - Campus Essen, Technical chemistry I, GERMANY
| | - Stephan Barcikowski
- University of Duisburg-Essen, Technical Chemistry I, Universitaetsstrasse 5-7, 45141, Essen, GERMANY
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Panthi G, Park M. Synthesis of metal nanoclusters and their application in Hg 2+ ions detection: A review. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127565. [PMID: 34736203 DOI: 10.1016/j.jhazmat.2021.127565] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/15/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Mercuric (Hg2+) ions released from human activities, natural phenomena, and industrial sources are regarded as the global pollutant of world's water. Hg2+ ions contaminated water has several adverse effects on human health and the environment even at low concentrations. Therefore, rapid and cost-effective method is urgently required for the detection of Hg2+ ions in water. Although, the current analytical methods applied for the detection of Hg2+ ions provide low detection limit, they are time consuming, require expensive equipment, and are not suitable for in-situ analysis. Metal nanoclusters (MNCs) consisting of several to ten metal atoms are important transition missing between single atoms and plasmonic metal nanoparticles. In addition, sub-nanometer sized MNCs possess unique electronic structures and the subsequent unusual optical, physical, and chemical properties. Because of these novel properties, MNCs as a promising material have attracted considerable attention for the construction of selective and sensitive sensors to monitor water quality. Hence this review is focused on recent advances on synthesis strategies, and optical and chemical properties of various MNCs including their applications to develop optical assay for Hg2+ ions in aqueous solutions.
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Affiliation(s)
- Gopal Panthi
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju, Chonbuk 55338, Republic of Korea.
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju, Chonbuk 55338, Republic of Korea; Woosuk Institute of Smart Convergence Life Care (WSCLC), Woosuk University, Wanju, Chonbuk 55338, Republic of Korea.
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7
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Shome R, Ghosh SS. Transferrin Coated d-penicillamine-Au-Cu Nanocluster PLGA Nanocomposite Reverses Hypoxia-Induced EMT and MDR of Triple-Negative Breast Cancers. ACS APPLIED BIO MATERIALS 2021; 4:5033-5048. [PMID: 35007052 DOI: 10.1021/acsabm.1c00296] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Triple-negative breast cancer (TNBC), the most aggressive subtype of breast cancer, lacks effective targeted therapies due to negative expression of the targetable bioreceptors. Additionally, hypoxic condition in solid tumors contributes to the epithelial to mesenchymal transition (EMT), which aggravates cancer progression, multidrug resistance (MDR), migration, and stemness of the TNBC. A therapeutic module has been established in this regard by coating PLGA nanoparticle with d-penicillamine templated Au-Cu bimetallic nanoclusters. Further, the resultant nanomaterials were coated with recombinant transferrin protein to specifically target transferrin receptor overexpressing TNBC. The synthesized nanocomposites showed strong orange emission band at 630 nm with fluorescence quantum yield of 2%, rendering it suitable for theranostic applications. Experimental results demonstrated efficient cellular internalization and significant innate anti-cell proliferative potential of the nanocomposites. The fabricated nanocomposites were also able to induce cell death in spheroids, which was confirmed by live/dead dual staining results. Furthermore, when EMT-induced TNBC cells were treated with nanocomposites, they generated reactive oxygen species (ROS), depolarized the mitochondrial membrane potential, and induced apoptosis. Gene expression by real-time PCR indicated that treatment of EMT-induced TNBC cells with nanocomposites facilitated mesenchymal to epithelial transition (MET). In MDA-MB-468 cells, treatment with nanocomposites resulted in a 1.35-fold rise in E-cadherin an epithelial marker and a 1.36-fold decrease in vimentin a mesenchymal marker. Similarly, 2.87-fold and 1.76-fold decrease in stemness markers ALDH1A3 and EpCAM were observed in MDA-MB-231. Furthermore, 4.63-fold decrease in expression of ABCC1, a prominent contributor of MDR, was observed in MDA-MB-231. Protein expression studies revealed that nanocomposites reduced p-STAT-3 by 1.61-fold in MDA-MB-231 and by 7.8-fold in MDA-MB-468. Importantly, nanocomposites downregulated the expression of β-catenin by 3-fold in MDA-MB-231 and by 3.11-fold in MDA-MB-468. Downregulation of EMT with concomitant alteration of STAT-3 and β-catenin signaling pathways led to reduced migration ability of the TNBC cells.
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Affiliation(s)
- Rajib Shome
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati-39, Assam India
| | - Siddhartha Sankar Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati-39, Assam India.,Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-39, Assam India
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8
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Reyes-Cruzaley AP, Ochoa-Terán A, Tirado-Guízar A, Félix-Navarro RM, Alonso-Núñez G, Pina-Luis G. A fluorescent PET probe based on polyethyleneimine-Ag nanoclusters as a reversible, stable and selective broad-range pH sensor. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:2495-2503. [PMID: 34002195 DOI: 10.1039/d1ay00302j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, nanoclusters (NCs) of Cu and Ag capped with hyperbranched polyethyleneimine (PEI) were prepared using chemical reduction by a one-step hydrothermal method. The PEI coated-NCs were characterized by high-resolution transmission electron microscopy, ζ potential, thermogravimetric analysis, dynamic light scattering, Fourier-transform infrared, UV-visible, and fluorescence spectroscopy. The PEI-NCs exhibited strong absorption and fluorescence, high stability, and excellent water dispersibility. The resulting PEI-NCs showed a reversible and linear response of fluorescence intensity with pH over a wide range (3-11); however, PEI-AgNCs showed a better reversibility and sensitivity than PEI-CuNCs. Unlike several types of pH sensors based on modified NCs, which are based on a nanoparticle aggregation/disaggregation mechanism, the response of our sensor is based on a photoinduced electron transfer process, which gives it a high reversibility. This method was successfully applied in pH measurements in tap water and green tea samples, with excellent results, indicating its practical utility for these applications. A visual device was obtained by immobilizing PEI-AgNCs into agarose hydrogels at different pH values. The results show that the proposed sensor can be used as a pH visual detector. Besides, the light emission of the nanosensor was corroborated by fluorescence microscopy, confirming that the nanosensor based on PEI-AgNCs has great potential to be used in cellular imaging.
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Affiliation(s)
- Ana Patricia Reyes-Cruzaley
- Centro de Graduados e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Tijuana, Bulevar Alberto Limón Padilla S/N, Otay Tecnológico, 22510, Tijuana, B. C., Mexico.
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9
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Chen L, Azeem S, Ruan M, Xu W, Barck A, Kornowski A, Parak WJ, Chakraborty I. Rapid template‐guided ligand‐free synthesis of ultrasmall Pt nanoclusters with efficient hydrogen evolution reaction activity and their versatile release. NANO SELECT 2021. [DOI: 10.1002/nano.202000225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Lizhen Chen
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
| | - Shoaib Azeem
- Fachbereich Physik Philipps Universität Marburg Marburg Germany
| | - Mingbo Ruan
- State Key Laboratory of Electroanalytical Chemistry, and Jilin Province Key Laboratory of Low Carbon Chemical Power Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun P. R. China
| | - Weilin Xu
- State Key Laboratory of Electroanalytical Chemistry, and Jilin Province Key Laboratory of Low Carbon Chemical Power Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun P. R. China
| | - Almut Barck
- Fachbereich Chemie Universität Hamburg Hamburg Germany
| | | | - Wolfgang J. Parak
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
- Fachbereich Chemie Universität Hamburg Hamburg Germany
- CIC Biomagune San Sebastian Spain
| | - Indranath Chakraborty
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
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10
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Akavaram S, Desai ML, Park TJ, Murthy Z, Kailasa SK. Trypsin encapsulated gold-silver bimetallic nanoclusters for recognition of quinalphos via fluorescence quenching and of Zn2+ and Cd2+ ions via fluorescence enhancement. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114830] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Qu F, Chen Y, Jiang D, Zhao XE. pH-modulated aggregation-induced emission of Au/Cu nanoclusters and its application to the determination of urea and dissolved ammonia. Mikrochim Acta 2021; 188:113. [PMID: 33677619 DOI: 10.1007/s00604-021-04770-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/20/2021] [Indexed: 01/11/2023]
Abstract
A fluorescence platform is designed based on aggregation-induced emission of Au/Cu nanoclusters (Au/Cu NCs) driven by pH value. When pH increases from 6.0 to 7.0, Au/Cu NCs change from aggregation to dispersion, accompanied by the oxidation of Cu cores. Under the catalysis of urease, urea is hydrolysed to release ammonia, which further undergoes a hydrolysis reaction to produce OH-, causing the pH to increase. The fluorescence of Au/Cu NCs quenches linearly at 590 nm with the excitation wavelength at 320 nm when the concentration of urea varies from 5.0 to 100 μM. The limit of detection (LOD) and limit of quantification (LOQ) of urea are 2.23 and 7.45 μM, respectively. Combined with headspace single-drop microextraction technology, Au/Cu NCs are employed to monitor dissolved ammonia with low-cost and simple operation. The linear range of dissolved ammonia is from 20 to 300 μM. The LOD and LOQ of dissolved ammonia are 7.04 and 23.4 μM, respectively. The relative standard deviation (RSD) values of the intra-day and inter-day precision of urea are 2.4-3.0% and 3.0-3.7%, respectively, and those of dissolved ammonia are in the range 3.4-5.1% (intra-day precision) and 4.2-5.8% (inter-day precision). No interferences have been indentified in the determination of urea and dissolved ammonia. Finally, the proposed method has been applied to determine urea in human urine samples and dissolved ammonia in water samples with satisfactory results.Graphical abstract The pH increase produces the dispersion and decomposition of Au/Cu NCs, leading to the fluorescence quenching. Both urea and dissolved ammonia are detected successfully because they cause the pH change to alkaline.
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Affiliation(s)
- Fei Qu
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China. .,The Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu Normal University, Qufu, 273165, Shandong, China.
| | - Yanan Chen
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China.,The Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Dafeng Jiang
- Department of Physical and Chemical Testing, Shandong Center for Disease Control and Prevention, Jinan, 250014, China
| | - Xian-En Zhao
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China. .,The Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu Normal University, Qufu, 273165, Shandong, China.
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12
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Unnikrishnan B, Lien CW, Chu HW, Huang CC. A review on metal nanozyme-based sensing of heavy metal ions: Challenges and future perspectives. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123397. [PMID: 32659586 DOI: 10.1016/j.jhazmat.2020.123397] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
Large scale mining, manufacturing industries, exploitation of underground water, depletion of groundwater level, and uncontrolled discharge of industrial wastes have caused severe heavy metal ion pollution to the environment throughout the world. Therefore, the rapid detection of such toxic metal ions is inevitable. However, conventional methods require sophisticated instruments and skilled manpower and are difficult to operate in on-field conditions. Recently, metal nanozyme-based assays have been found to have the potential as an alternative to conventional methods due to their portability, simplicity, and high sensitivity to detect metal ion concentration to as low as parts per trillion (ppt). Metal nanozyme-based systems for heavy metal ions enable rapid and cheap screening on the spot with a very simple instrument such as a UV-vis absorption spectrophotometer and therefore, are convenient for use in field operations, especially in remote parts of the world. The sensing mechanism of a nanozyme-based sensor is highly dependent on its surface properties and specific interactions with particular metal ion species. Such method often encounters selectivity issues, unlike natural enzyme-based assays. Therefore, in this review, we mainly focus our discussion on different types of target recognition and inhibition/enhancement mechanisms, and their responses toward the catalytic activity in the sensing of target metal ions, design strategies, challenges, and future perspectives.
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Affiliation(s)
- Binesh Unnikrishnan
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Chia-Wen Lien
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Han-Wei Chu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, 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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13
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Chen Z, Ding W, Gu Y, Gao S, Yun D, Wang C, Li W, Sun F. Dopamine-Modified AuCu Bimetallic Nanoclusters as Charge Transfer-Based Biosensors for Highly Sensitive Glycine Detection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13928-13936. [PMID: 33174751 DOI: 10.1021/acs.langmuir.0c02396] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Glycine is the simplest amino acid in living organisms and plays important roles in biology and medicine. However, few biosensors for glycine sensing have been reported. Herein, we present a facile strategy to construct dopamine-modified AuCu bimetallic nanoclusters (denoted as AuCu NC-DA) as charge transfer-based biosensors for highly sensitive glycine sensing. The AuCu NCs stabilized by bovine serum albumin (BSA) exhibited a fluorescence maximum at 400 nm. Because of the high affinity of BSA for dopamine (DA), the surface of the AuCu NCs was modified with DA without any complicated chemical reactions, resulting in fluorescence quenching through a charge transfer process. Among 20 amino acids, AuCu NC-DA exhibited an off/on fluorescence switching response specifically toward glycine through the formation of hydrogen bonds with oxidized DA, which inhibited the charge transfer process, leading to the emergence of a new emission peak at 475 nm. Spectroscopic and thermodynamic results combined with molecular docking analyses provided comprehensive understanding of the sensing mechanism. Furthermore, we showed that AuCu NC-DA was able to sense glycine in cells by imaging. Finally, the practicability of AuCu NC-DA for glycine detection was validated in milk drink samples. This study presents a promising type of a charge transfer-based sensor.
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Affiliation(s)
- Zhichuan Chen
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
| | - Weihua Ding
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
| | - Yayun Gu
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
| | - Sheng Gao
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
| | - Damin Yun
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
| | - Chengniu Wang
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
| | - Wenqing Li
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
| | - Fei Sun
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong Jiangsu, 226001 China
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14
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Guo Y, Shi S, Fan C, Jin D. Fluorescent determination of fluazinam with polyethyleneimine-capped copper nanoclusters. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Copper nanoclusters@Al3+ complexes with strong and stable aggregation-induced emission for application in enzymatic determination of urea. Mikrochim Acta 2020; 187:457. [DOI: 10.1007/s00604-020-04438-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 07/07/2020] [Indexed: 10/23/2022]
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16
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Ghorai P, Dey A, Brandão P, Benmansour S, Gómez García CJ, Ray PP, Saha A. Multifunctional Ni(II)-Based Metamagnetic Coordination Polymers for Electronic Device Fabrication. Inorg Chem 2020; 59:8749-8761. [DOI: 10.1021/acs.inorgchem.0c00389] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pravat Ghorai
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Arka Dey
- Department of Physics, Jadavpur University, Kolkata 700032, India
- Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sec. III, Salt Lake, Kolkata 700106, India
| | - Paula Brandão
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Samia Benmansour
- Instituto de Ciencia Molecular, Departamento de Química Inorgánica, Universidad de Valencia, C/José Beltrán, 2, 46980 Paterna (Valencia), Spain
| | - Carlos J. Gómez García
- Instituto de Ciencia Molecular, Departamento de Química Inorgánica, Universidad de Valencia, C/José Beltrán, 2, 46980 Paterna (Valencia), Spain
| | | | - Amrita Saha
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
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Liu R, Duan S, Bao L, Wu Z, Zhou J, Yu R. Photonic crystal enhanced gold-silver nanoclusters fluorescent sensor for Hg 2+ ion. Anal Chim Acta 2020; 1114:50-57. [PMID: 32359514 DOI: 10.1016/j.aca.2020.04.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 03/01/2020] [Accepted: 04/02/2020] [Indexed: 01/16/2023]
Abstract
Luminescent nanoclusters (NCs) have attracted much attention because of their good photostability and low toxicity, however, the low quantum yield is still a deficiency, and many increasing efforts are being devoted to enhance the luminescence intensity of NCs. In this paper, a method of enhancing the fluorescent signal of gold-silver nanoclusters (AuAgNCs) by photonic crystals (PhCs) was proposed. The fluorescent intensity of AuAgNCs on PhCs can be enhanced 8.0-fold in comparison to the control sample without PhCs. Furthermore, a novel fluorescence sensor of AuAgNCs based on PhCs is used for the sensitive and selective detection of Hg2+ ion in the aqueous solution, the detection limit is 0.35 nM due to the PhCs enhancement effect for the fluorescence. This proposed method may not only develop a highly sensitive method for determination of Hg2+ ion, but also expand the application of AuAgNCs in ultra-trace analysis.
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Affiliation(s)
- Rong Liu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China; Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Chemistry and Material Engineering, Hunan City University, Yiyang, 413000, PR China
| | - Shanshan Duan
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Lijiao Bao
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Zhaoyang Wu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
| | - Jun Zhou
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Ruqin Yu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
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Chakraborty S, Nandi S, Bhattacharyya K, Mukherjee S. Probing Viscosity of Co‐Polymer Hydrogel and HeLa Cell Using Fluorescent Gold Nanoclusters: Fluorescence Correlation Spectroscopy and Anisotropy Decay. Chemphyschem 2020; 21:406-414. [DOI: 10.1002/cphc.201901161] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 01/11/2020] [Indexed: 02/05/2023]
Affiliation(s)
- Subhajit Chakraborty
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road Bhopal 462 066, Madhya Pradesh India
| | - Somen Nandi
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road Bhopal 462 066, Madhya Pradesh India
| | - Kankan Bhattacharyya
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road Bhopal 462 066, Madhya Pradesh India
| | - Saptarshi Mukherjee
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhopal Bypass Road Bhopal 462 066, Madhya Pradesh India
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19
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Cai Z, Zhu R, Pang S, Tian F, Zhang C. One‐step Green Synthetic Approach for the Preparation of Orange Light Emitting Copper Nanoclusters for Sensitive Detection of Mercury(II) Ions. ChemistrySelect 2020. [DOI: 10.1002/slct.201904013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Zhifeng Cai
- Department of ChemistryTaiyuan Normal University Jinzhong 030619 P. R. China
| | - Ruitao Zhu
- Department of ChemistryTaiyuan Normal University Jinzhong 030619 P. R. China
| | - Shulin Pang
- Department of ChemistryTaiyuan Normal University Jinzhong 030619 P. R. China
| | - Fang Tian
- Department of ChemistryTaiyuan Normal University Jinzhong 030619 P. R. China
| | - Caifeng Zhang
- Department of ChemistryTaiyuan Normal University Jinzhong 030619 P. R. China
- Humic Acid Engineering and Technology Research Center of Shanxi Province Jinzhong 030619 P. R. China
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20
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21
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Unnikrishnan B, Lien CW, Huang CC. RETRACTED ARTICLE: Nanozyme Based Detection of Heavy Metal Ions and its Challenges: A Minireview. JOURNAL OF ANALYSIS AND TESTING 2019. [DOI: 10.1007/s41664-019-00110-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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22
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Recent progress in copper nanocluster-based fluorescent probing: a review. Mikrochim Acta 2019; 186:670. [PMID: 31489488 DOI: 10.1007/s00604-019-3747-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 08/10/2019] [Indexed: 10/26/2022]
Abstract
Copper nanoclusters (CuNCs) are an attractive alternative to other metal nanoclusters. The synthesis of CuNCs is highly efficient and fast, with low-cost and without any complicated manipulation. Because of their tunable fluorescence and low toxicity, CuNCs have been highly exploited for biochemical sensing. This review (with 172 refs.) summarizes the progress that has been made in the field in the past years. Following an introduction into the fundamentals of CuNCs, the review first focuses on synthetic methods and the fluorescence properties of CuNCs (with subsections on the use of proteins, peptides, DNA and other molecules as templates). This is followed by a section on the use of CuNCs in fluorometric assays, with subsections on the detection of small molecules, proteins, nucleic acids, various other biomolecules including drugs, and of pH values. A further large chapter summarizes the work related to environmental analyses, specifically on determination of metal ions, anions and pollutants. Graphical abstract Schematic representation of the synthesis and potential applications of copper nanocluster (CuNCs) in biochemical analysis, emphatically reflected in some vital areas such as small molecule analysis, biomacromolecule monitoring, cell imaging, ions detection, toxic pollutant, etc.
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23
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Mokhtarzadeh E, Abolhasani J, Hassanzadeh J. AuCu bimetal nanoclusters as high-performance mimics for ultrasensitive recognition of biomolecules. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Introducing novel mimic materials as alternatives for natural enzymes challenges the analysts. Study on the peroxidase-like materials is an active field in analytical research areas. Herein, Au/Cu bimetal nanoclusters (Au/Cu NCs) are introduced as highly efficient peroxidase mimics, which were investigated using fluorometric and colorimetric techniques. A comprehensive comparison between the catalytic activity of Au, Cu, and their bimetal NCs, with different ratios of Au/Cu was performed using some different peroxidase substrates (including 3,3′,5,5′-tetramethylbenzidine (TMB), o-phenylenediamine dihydrochloride (OPD), and terephthalic acid (TA)). Additionally, different capping agents were applied for the synthesis of NCs, and it was found that penicillamine-capped NCs with 50% Cu have higher activity than other synthesized NCs. Analytical application of the novel mimic for H2O2 detection caused a linear calibration in a wide linear range of 0.001–3 μmol/L, and a great detection limit (3S) of 0.18 nmol/L, using a sensitive fluorescence system. The developed system was also sensitive for recognizing glucose and cholesterol in blood samples, after their enzymatic oxidation and production of H2O2. Detection limits of 55 and 15 nmol/L were obtained for glucose and cholesterol, respectively. The presented method also showed good reliability, which was validated by certified reference materials.
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Affiliation(s)
- Elham Mokhtarzadeh
- Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Jafar Abolhasani
- Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Javad Hassanzadeh
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
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24
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Shamsipur M, Barati A, Nematifar Z. Fluorescent pH nanosensors: Design strategies and applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.03.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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25
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MOKHTARZADEH E, ABOLHASANI J, HASSANZADEH J. Rhodamine B Chemiluminescence Improved by Mimetic AuCu Alloy Nanoclusters and Ultrasensitive Measurement of H 2O 2, Glucose and Xanthine. ANAL SCI 2019; 35:543-550. [DOI: 10.2116/analsci.18p532] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | | | - Javad HASSANZADEH
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz
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26
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Jin L, Shi L, Shi W, Meng Z, Shang L, Shen Y. Fluorescence lifetime-based pH sensing by platinum nanoclusters. Analyst 2019; 144:3533-3538. [PMID: 31025668 DOI: 10.1039/c9an00061e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this work, we report for the first time the application of ultrasmall Pt nanoclusters (Pt NCs) as a fluorescence-lifetime-based pH sensor. The fluorescence properties of our prepared Pt NCs show strong pH dependence, due to the change of the surface states of Pt NCs under alkaline/acidic conditions. Interestingly, both the fluorescence intensity and the fluorescence lifetime of Pt NCs exhibit a good linear relationship in the physiologically relevant pH range of 6.02-7.54. Our Pt NC-based pH sensor possesses many important features as an attractive sensor, including high anti-jamming capability, excellent stability and good reversibility. Moreover, the use of fluorescence lifetime as the optical readout signal rather than the intensity makes the present pH sensor more reliable in practical applications because the fluorescence lifetime is invariant to the probe concentration or changes in excitation conditions. Application of the Pt NC-based system for pH detection in real water samples and simulated intracellular environment samples has also been successfully demonstrated.
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Affiliation(s)
- Lihua Jin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
| | - Lulu Shi
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
| | - Wenjuan Shi
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
| | - Zheng Meng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
| | - Li Shang
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Yehua Shen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.
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Rapid synthesis of Au/Ag bimetallic nanoclusters with highly biochemical stability and its applications for temperature and ratiometric pH sensing. Anal Chim Acta 2019; 1070:88-96. [PMID: 31103171 DOI: 10.1016/j.aca.2019.04.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 11/22/2022]
Abstract
Herein, we developed a simple and rapid strategy to synthesize gold/silver bimetallic nanoclusters (Au/Ag NCs) with highly biochemical stability by a one-pot route. The Au/Ag NCs were obtained via a chemical reduction procedure in alkaline aqueous solution at 75 °C within only 20 min by employing bovine serum albumin (BSA) as both ligand and reductant. The as-obtained Au/Ag NCs displayed bright orange fluorescence with an emission peak located at 570 nm and temperature-dependent fluorescence property, which were utilized as fluorescent thermometer directly. More intriguingly, the Au/Ag NCs were very stable against various pH values, ions, biothiols, H2O2, fetal bovine serum (FBS), RPMI 1640 medium and amino acids. Taking advantage of the excellent biochemical stability, a ratiometric fluorescence biosensor, fluorescein-5-isothiocyanate (FITC)-Au/Ag NCs, was constructed for pH sensing based on the incorporation of FITC into the Au/Ag NCs. Furthermore, the ratiometric pH sensor was also successfully applied on the model of HeLa cells.
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28
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Choi JW, Cho N, Woo HC, Oh BM, Almutlaq J, Bakr OM, Kim SH, Lee CL, Kim JH. Investigation of high contrast and reversible luminescence thermochromism of the quantum confined Cs 4PbBr 6 perovskite solid. NANOSCALE 2019; 11:5754-5759. [PMID: 30834913 DOI: 10.1039/c8nr10223f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Thermochromism of organic/inorganic halide perovskites has attracted particular interest due to their potential applications as photoluminescence (PL)-based temperature sensors. However, despite the outstanding PL characteristics, their use as a thermochromic material in practical temperature ranges has been limited because of their poor thermal stability. In this study, we used the quantum confinement effect and exceptional PL quantum efficiency of the Cs4PbBr6 perovskite to demonstrate their high on/off ratio (20) and reversible PL thermochromism in the solid state in practical temperature ranges including room temperature (RT). Systematic photophysical and optical characterization studies, including exciton-phonon scattering, exciton binding energy, exciton decay dynamics, and crystal structure change, were performed to investigate the origin of this unique thermochromic PL property. The results showed that the efficient and highly reversible thermochromic PL emission of the Cs4PbBr6 perovskite is due to its desirable optical properties such as highly luminescent emission, efficient PL quenching at high temperatures, and thermally reversible structural changes.
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Affiliation(s)
- Jin Woo Choi
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.
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29
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Mahmoudi E, Hajian A, Rezaei M, Afkhami A, Amine A, Bagheri H. A novel platform based on graphene nanoribbons/protein capped Au-Cu bimetallic nanoclusters: Application to the sensitive electrochemical determination of bisphenol A. Microchem J 2019. [DOI: 10.1016/j.microc.2018.10.044] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Shojaeifard Z, Heidari N, Hemmateenejad B. Bimetallic AuCu nanoclusters-based florescent chemosensor for sensitive detection of Fe 3+ in environmental and biological systems. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 209:202-208. [PMID: 30390506 DOI: 10.1016/j.saa.2018.10.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 05/25/2018] [Accepted: 10/21/2018] [Indexed: 05/24/2023]
Abstract
Assays of ferric ion (Fe3+) with high sensitivity and selectivity have been required to evaluate its amount in environmental and biological systems. Herein, a novel fluorometric penicillamine-capped bimetallic gold-copper nanoclusters (PA-AuCu bi-MNCs) sensor was constructed for facile, environmentally friendly and quantitative detection of Fe3+ through inner filter effect (IFE) mechanism. One-step green synthetic approach was applied for the synthesis of AuCu bi-MNCs by using d-penicillamine (D-PA) as template and stabilizer. In the presence of Fe3+, the emission of the PA-AuCu bi-MNCs was hindered that caused selective quenching of the fluorescence intensity. The response to Fe3+ allows for two linear dynamic ranges of 5.0 × 10-7 M-7.0 × 10-6 M and 7.0 × 10-6 M-1.0 × 10-4 M with a detection limit of 0.1 μM, which is approximately 53 times lower than the maximum level (5.37 μM) of Fe3+ in drinking water that had been reported by the World Health Organization. The independency of the system from most of the interferences is the important feature of this work. Beside the appropriate selectivity of the proposed method, it shows a considerable operation in various environmental samples including rain water, three types of river water and also in human blood serum as a biological matrix.
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Affiliation(s)
- Zahra Shojaeifard
- Chemistry Department, Shiraz University, Shiraz, Iran; Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nahid Heidari
- Chemistry Department, Shiraz University, Shiraz, Iran
| | - Bahram Hemmateenejad
- Chemistry Department, Shiraz University, Shiraz, Iran; Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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31
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Cysteine capped copper/molybdenum bimetallic nanoclusters for fluorometric determination of methotrexate via the inner filter effect. Mikrochim Acta 2019; 186:130. [DOI: 10.1007/s00604-019-3230-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 01/04/2019] [Indexed: 02/06/2023]
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32
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Zhang Y, Guo X, Li G, Zhang G. Photoluminescent Ag nanoclusters for reversible temperature and pH nanosenors in aqueous solution. Anal Bioanal Chem 2019; 411:1117-1125. [PMID: 30643932 DOI: 10.1007/s00216-018-1541-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/30/2018] [Accepted: 12/06/2018] [Indexed: 10/27/2022]
Abstract
A facile, straightforward, and green method was reported for the preparation of water-soluble and highly luminescent silver nanoclusters (AgNCs) using captopril (Capt) as a stabilizing agent. The as-prepared Capt@AgNCs exhibited bright red emission with a strong peak centered at 637 nm and showed low toxicity and good stability. Interestingly, the AgNCs displayed temperature sensitivity based on obvious temperature dependence of the fluorescence emission intensity. Furthermore, the AgNCs showed a good reversible and linear response to the environment temperature over the range from 10 °C to 45 °C with a high resolution and activation energy, which allowed its potential application as a fluorescent nanothermometer. In addition, the AgNCs were prepared to monitor pH via the fluorescence intensity of AgNCs responding sensitively to pH fluctuating within a wide range from 2.08 to 6.06. The study provides promising applications as a convenient and eco-friendly fluorescent temperature and pH nanosenser in environmental and biological fields. Graphical abstract Novel silver nanocluster-based fluorescent nanosensors have been successfully constructed for temperature detection. The nanosensors showed a good reversible and linear response to the environment temperature over the range from 10 °C to 45 °C. In addition, the AgNCs described here are employed as pH sensors by virtue of the fluorescence intensity of their sensitive response to fluctuating pH in a linear range of 2.08-6.06.
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Affiliation(s)
- Yanyan Zhang
- School of Chemistry and Chemical Engineering, Institute of Environmental Science, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Xiaohong Guo
- School of Chemistry and Chemical Engineering, Institute of Environmental Science, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Gao Li
- School of Chemistry and Chemical Engineering, Institute of Environmental Science, Shanxi University, Taiyuan, 030006, Shanxi, China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning, China
| | - Guomei Zhang
- School of Chemistry and Chemical Engineering, Institute of Environmental Science, Shanxi University, Taiyuan, 030006, Shanxi, China.
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Feng T, Chen Y, Feng B, Yan J, Di J. Fluorescence red-shift of gold-silver nanoclusters upon interaction with cysteine and its application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 206:97-103. [PMID: 30086452 DOI: 10.1016/j.saa.2018.07.087] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/25/2018] [Accepted: 07/30/2018] [Indexed: 06/08/2023]
Abstract
In this work, gold-silver alloy nanoclusters (AuAg NCs) were demonstrated as a novel probe for fluorescent detection of cysteine (Cys). The alloy nanoclusters were fabricated by bovine serum albumin as a template and NaBH4 as a reducer. They showed a red emission at 650 nm. The interaction between AuAg NCs and Cys was investigated. The thiol group in Cys molecules has strong affinity on the surface of metals, which results in variation of fluorescence peak wavelength. It was further demonstrated that this red-shift of fluorescence had a good linear relationship with the concentration of Cys in the range of 2-100 μM. The method was successfully applied for human plasma analysis with satisfactory results. This novel strategy was expected to provide a potential opportunity for extending the application of novel metal nanoclusters in fluorescence.
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Affiliation(s)
- Ting Feng
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, PR China
| | - Yu Chen
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, PR China
| | - Bingbing Feng
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, PR China
| | - Jilin Yan
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, PR China
| | - Junwei Di
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, PR China.
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34
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Li L, Huang M, Liu X, Sun D, Shao C. In Situ Generation of Fluorescent Copper Nanoclusters Embedded in Monolithic Eggshell Membrane: Properties and Applications. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1913. [PMID: 30304792 PMCID: PMC6213854 DOI: 10.3390/ma11101913] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/07/2018] [Accepted: 09/30/2018] [Indexed: 12/15/2022]
Abstract
Luminescent metal nanoclusters have attracted considerable research attention in recent years due to their unique properties and extensive usage in many fields. Three different synthetic routes were developed to in situ generate orange and red emitting copper nanoclusters embedded in monolithic eggshell membrane (Cu NCs@ESM) using different reducing reagents including N₂H₄·H₂O, NH₂OH·HCl and Vitamin C at room temperature for the first time. The routes are extremely facile, low-cost and versatile. The obtained Cu NCs@ESM nanocomposites exhibit excellent photostability and chemical stability, laying the foundation for various practical applications. Fluorescent surface patterning was demonstrated based on the proposed strategy easily. Significantly, the Cu NCs@ESM shows selective fluorescence quenching response to Hg2+ ions and good catalytic activity for methylene blue (MB) reduction degradation making it ideal as portable sensing strip and recyclable catalyst. The work provides a general strategy for the fabrication of other various monolithic nanomaterials with potential applications.
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Affiliation(s)
- Lu Li
- College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.
| | - Min Huang
- College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.
| | - Xianhu Liu
- College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.
| | - Dengming Sun
- College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.
| | - Congying Shao
- College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.
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35
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Bazán-Díaz L, Mendoza-Cruz R, Velázquez-Salazar JJ, Plascencia-Villa G, Ascencio-Aguirre FM, Ojeda-Galván HJ, Herrera-Becerra R, Guisbiers G, José-Yacamán M. Synthesis and Properties of the Self-Assembly of Gold-Copper Nanoparticles into Nanoribbons. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9394-9401. [PMID: 30011365 DOI: 10.1021/acs.langmuir.7b04187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report the efficient wet-chemical production of self-assembled gold-copper bimetallic nanoparticles (diameter of ∼2 nm) into two-dimensional flexible ribbonlike nanostructures. The direct observation of a layered arrangement of particles into nanoribbons was provided through high-resolution transmission electron microscopy and electron tomography. These nanoribbons showed photoluminesce and efficient photocatalytic activity for the conversion of 4-nitrophenol. The thermal stability of the nanoribbons was also measured by in situ heat treatment in the electron microscope, confirming that the self-assembled gold-copper nanoribbons efficiently supported up to 350 °C. The final morphology of the nanoparticles and their ability to self-assemble into flexible nanoribbons were dependent on concentration and the ratio of precursors. Therefore, these experimental factors were discussed. Remarkably, the presence of copper was found to be critical to triggering the self-assembly of nanoparticles into ordered layered structures. These results for the synthesis and stability of self-assemblies of metallic nanoparticles present a potential extension of the method to producing materials with catalytic applications.
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Affiliation(s)
- Lourdes Bazán-Díaz
- Department of Physics & Astronomy , University of Texas at San Antonio , One UTSA Circle , San Antonio , Texas 78249 , United States
| | - Rubén Mendoza-Cruz
- Department of Physics & Astronomy , University of Texas at San Antonio , One UTSA Circle , San Antonio , Texas 78249 , United States
| | - J Jesús Velázquez-Salazar
- Department of Physics & Astronomy , University of Texas at San Antonio , One UTSA Circle , San Antonio , Texas 78249 , United States
| | - Germán Plascencia-Villa
- Department of Physics & Astronomy , University of Texas at San Antonio , One UTSA Circle , San Antonio , Texas 78249 , United States
| | - Francisco Miguel Ascencio-Aguirre
- Institute of Physics, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica s/n, Col. Ciudad Universitaria , Coyoacán D. F., C.P. 04510 , México
| | - H Joazet Ojeda-Galván
- Coordinación para la Innovación y la Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luis Potosí (UASLP) , Álvaro Obregón 64 , 78000 San Luis Potosí , México
| | - Raúl Herrera-Becerra
- Institute of Physics, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica s/n, Col. Ciudad Universitaria , Coyoacán D. F., C.P. 04510 , México
| | - Grégory Guisbiers
- Department of Physics & Astronomy , University of Arkansas at Little Rock , 2801 South University Avenue , Little Rock , Arkansas 72204 , United States
| | - Miguel José-Yacamán
- Department of Physics & Astronomy , University of Texas at San Antonio , One UTSA Circle , San Antonio , Texas 78249 , United States
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36
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Miao Z, Hou W, Liu M, Zhang Y, Yao S. BSA capped bi-functional fluorescent Cu nanoclusters as pH sensor and selective detection of dopamine. NEW J CHEM 2018. [DOI: 10.1039/c7nj03524a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Illustration of the preparation of bi-functional BSA-CuNCs, the pH sensing and the detection of dopamine (DA).
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Affiliation(s)
- Zhuang Miao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Wenli Hou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Meiling Liu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Shouzhuo Yao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
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37
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38
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Jana J, Aditya T, Negishi Y, Pal T. Solvent Polarity-Dependent Behavior of Aliphatic Thiols and Amines toward Intriguingly Fluorescent AuAgGSH Assembly. ACS OMEGA 2017; 2:8086-8098. [PMID: 31457357 PMCID: PMC6645147 DOI: 10.1021/acsomega.7b01560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 11/02/2017] [Indexed: 06/10/2023]
Abstract
Highly stable fluorescent glutathione (GSH)-protected AuAg assembly has been synthesized in water under UV irradiation. The assembly is composed of small Ag2/Ag3 clusters. These clusters gain stability through synergistic interaction with Au(I) present within the assembly. This makes the overall assembly fluorescent. Here, GSH acts as a reducing as well as stabilizing agent. The assembly is so robust that it can be vacuum-dried to solid particles. The as-obtained solid is dispersible in nonaqueous solvents. The interaction between solvent and the assembly provides stability to the assembly, and the assembly shows fluorescence. It is interesting to see that the behavior of long-chain aliphatic thiols or amines toward the fluorescent assembly is altogether a different phenomenon in aqueous and nonaqueous mediums. The assembly gets ruptured in water due to direct interaction with long-chain thiols or amines, whereas in nonaqueous medium, solvation of added thiols or amines becomes pronounced, which hinders the interaction of solvent with the assembly. However, the fluorescence of the assembly is always quenched with thiols or amines no matter what the solvent medium is. In aqueous medium, the fluorescence quenching by aliphatic thiol or amine becomes pronounced with successive decrease in their chain length, whereas in nonaqueous medium, the trend is just reversed with chain length. The reasons behind such an interesting reversal of fluorescence quenching in aqueous and nonaqueous solvents have been discussed explicitly. Again, in organic solvents, thiol or amine-induced quenched fluorescence is selectively recovered by Pb(II) ion without any alteration of excitation and emission maxima. This phenomenon is not observed in water because of the ruptured fluorescent assembly. The fluorescence recovery by Pb(II) and unaltered emission peak only in nonaqueous solvent unequivocally prove the engagement of Pb(II) with thiols or amines, which in turn revert the original solvent-supported stabilization of the assembly.
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Affiliation(s)
- Jayasmita Jana
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Teresa Aditya
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Yuichi Negishi
- Department
of Applied Chemistry, Tokyo University of
Science, Tokyo 1628601, Japan
| | - Tarasankar Pal
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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39
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Zheng W, Yang H, Xuan G, Dai L, Hu Y, Hu S, Zhong S, Li Z, Gao M, Wang S, Feng Y. Longitudinal Study of the Effects of Environmental pH on the Mechanical Properties of Aspergillus niger. ACS Biomater Sci Eng 2017; 3:2974-2979. [PMID: 33418717 DOI: 10.1021/acsbiomaterials.6b00294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The regulation of environmental pH is key to the health of an ecosystem, influencing the metabolic activity, growth, and development of organisms within it. Although pH values can be measured by a wide range of readily available technologies ranging from fluorescent dyes and nanosensors, these cannot reveal the history of environmental pH from before monitoring begins. This information is sometimes crucial for piecing together what has happened to an ecosystem, and our long-term goal is therefore to develop technologies capable of obtaining it. Here, we propose monitoring environmental pH over time by tracking mechanical properties of a common fungus. As a first step toward obtaining a time history of pH, we evaluate the effect of pH upon the effective indentation modulus of spores and hyphae of Aspergillus niger. We report that the indentation modulus of this phosphorus-solubilizing fungus, obtained through atomic force microscopy and nanoindentation, correlated with environmental acidity. We observed a significant, monotonic increase in moduli over the course of incubation in an acidic environment, but no change in moduli over time for incubation in a neutral environment. Results show promise for using our scheme to detect and track environmental pH over time, and more broadly for using a microorganism's mechanical properties as a biomarker for environmental detection.
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Affiliation(s)
- Wenjun Zheng
- Center for Molecular Imaging and Nuclear Medicine, School of Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu 215123, China.,School of Mechanical and Electronic Engineering, Soochow University, Suzhou, Jiangsu 215021, China
| | - Hua Yang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Guanghui Xuan
- Center for Molecular Imaging and Nuclear Medicine, School of Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu 215123, China.,School of Mechanical and Electronic Engineering, Soochow University, Suzhou, Jiangsu 215021, China
| | - Letian Dai
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Yunxiao Hu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Shuijin Hu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.,Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Shengkui Zhong
- School of Iron and Steel, Soochow University, Suzhou, Jiangsu 215021, China
| | - Zhen Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Mingyuan Gao
- Center for Molecular Imaging and Nuclear Medicine, School of Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu 215123, China
| | - Shimei Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Yuan Feng
- Center for Molecular Imaging and Nuclear Medicine, School of Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu 215123, China.,School of Mechanical and Electronic Engineering, Soochow University, Suzhou, Jiangsu 215021, China
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40
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Xiong H, Zheng H, Wang W, Liang J, Wen W, Zhang X, Wang S. A convenient purification method for silver nanoclusters and its applications in fluorescent pH sensors for bacterial monitoring. Biosens Bioelectron 2016; 86:164-168. [DOI: 10.1016/j.bios.2016.06.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/12/2016] [Accepted: 06/13/2016] [Indexed: 10/21/2022]
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41
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Dutta D, Chattopadhyay A, Ghosh SS. Cationic BSA Templated Au–Ag Bimetallic Nanoclusters As a Theranostic Gene Delivery Vector for HeLa Cancer Cells. ACS Biomater Sci Eng 2016; 2:2090-2098. [DOI: 10.1021/acsbiomaterials.6b00517] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Deepanjalee Dutta
- Centre for Nanotechnology, ‡Department of Chemistry, §Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Arun Chattopadhyay
- Centre for Nanotechnology, ‡Department of Chemistry, §Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Siddhartha Sankar Ghosh
- Centre for Nanotechnology, ‡Department of Chemistry, §Department of Biosciences
and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
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42
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43
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Gupta AK, Dhir A, Pradeep CP. Multifunctional Zn(II) Complexes: Photophysical Properties and Catalytic Transesterification toward Biodiesel Synthesis. Inorg Chem 2016; 55:7492-500. [PMID: 27439021 DOI: 10.1021/acs.inorgchem.6b00804] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Using 4-substituted derivatives of phenol-based compartmental Schiff-base hydroxyl-rich ligand, four multifunctional binuclear Zn(II) complexes have been synthesized and characterized. The photophysical properties of these complexes were explored in the solid state, in solutions, and in poly(methyl methacrylate) (PMMA) matrix, which revealed their good potential as tunable solid state emitters. Some of these complexes acted as efficient catalysts for the transesterification of esters and canola oil showing their potential in biodiesel generation. Mechanistic investigations using ESI-MS revealed that the transesterification catalyzed by these complexes proceeds through two types of acyl intermediates.
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Affiliation(s)
- Abhishek Kumar Gupta
- School of Basic Sciences, Indian Institute of Technology Mandi , Kamand 175 005, Himachal Pradesh, India
| | - Abhimanew Dhir
- School of Basic Sciences, Indian Institute of Technology Mandi , Kamand 175 005, Himachal Pradesh, India
| | - Chullikkattil P Pradeep
- School of Basic Sciences, Indian Institute of Technology Mandi , Kamand 175 005, Himachal Pradesh, India
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44
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Ravindranath R, Roy P, Chang HT. Synthesis, Optical Properties, and Sensing Applications of Gold Nanodots. CHEM REC 2016; 16:1664-75. [PMID: 27243417 DOI: 10.1002/tcr.201600014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Indexed: 01/26/2023]
Abstract
In this Personal Account, we briefly address our journey in developing photoluminescent nanomaterials for sensing purposes, with a focus on gold nanodots (Au NDs). Their synthetic strategies, optical properties, and sensing applications are emphasized. The Au NDs can be simply prepared from the etching of small-sized Au nanoparticles (<3 nm in diameter) by thiol compounds such as 11-mercaptoundecanoic acid under alkaline conditions. This simple approach allows the preparation of various functional Au NDs by choosing different thiol compounds as etching agents. Since the optical properties of Au NDs are highly dependent on the core and shell of each Au ND, the selection of etching reagents is important. Over the years we have developed various sensing systems using Au NDs for the detection of metal ions, anions, and proteins, based on analyte-induced photoluminescence quenching/enhancement of Au NDs as a result of changes in their oxidation state, shell composition, and structure.
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Affiliation(s)
- Rini Ravindranath
- Department of Chemistry, National Taiwan University, No. 1, Section 4 Roosevelt Road, Taipei, 10617, Taiwan
- Nanoscience and Technology Program Taiwan International Graduate Program Academia Sinica, Taipei, 11529, Taiwan
| | - Prathik Roy
- Department of Chemistry, National Taiwan University, No. 1, Section 4 Roosevelt Road, Taipei, 10617, Taiwan
| | - Huan-Tsung Chang
- Department of Chemistry, National Taiwan University, No. 1, Section 4 Roosevelt Road, Taipei, 10617, Taiwan
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45
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Deng HH, Wu GW, Zou ZQ, Peng HP, Liu AL, Lin XH, Xia XH, Chen W. pH-Sensitive gold nanoclusters: preparation and analytical applications for urea, urease, and urease inhibitor detection. Chem Commun (Camb) 2016; 51:7847-50. [PMID: 25854314 DOI: 10.1039/c5cc00702j] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we reported for the first time a facile synthetic process of gold nanoclusters (AuNCs) by using N-acetyl-L-cysteine both as a reducing agent and as a protection ligand. Based on the pH stimuli-responsive properties of the as-prepared AuNCs, we constructed a pH-sensing platform for the detection of urea, urease, and urease inhibitors.
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Affiliation(s)
- Hao-Hua Deng
- Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou 350004, China.
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46
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Dutta D, Sahoo AK, Chattopadhyay A, Ghosh SS. Bimetallic silver nanoparticle–gold nanocluster embedded composite nanoparticles for cancer theranostics. J Mater Chem B 2016; 4:793-800. [DOI: 10.1039/c5tb01583a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A bimetallic silver nanoparticle based gold nanocluster module has been developed for theranostic cellular application by a rapid and simple galvanic exchange method.
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Affiliation(s)
- Deepanjalee Dutta
- Centre for Nanotechnology
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Amaresh Kumar Sahoo
- Centre for Nanotechnology
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
| | - Arun Chattopadhyay
- Centre for Nanotechnology
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
- Department of Chemistry
| | - Siddhartha Sankar Ghosh
- Centre for Nanotechnology
- Indian Institute of Technology Guwahati
- Guwahati-781039
- India
- Department of Biosciences and Bioengineering
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47
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Synthesis of ultrastable and multifunctional gold nanoclusters with enhanced fluorescence and potential anticancer drug delivery application. J Colloid Interface Sci 2015; 455:6-15. [DOI: 10.1016/j.jcis.2015.05.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/17/2015] [Accepted: 05/18/2015] [Indexed: 11/22/2022]
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48
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Applications of Metal Nanoclusters in Environmental Monitoring. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1016/s1872-2040(15)60856-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Xiaoqing L, Ruiyi L, Xiaohuan L, Zaijun L. Ultra sensitive and wide-range pH sensor based on the BSA-capped Cu nanoclusters fabricated by fast synthesis through the use of hydrogen peroxide additive. RSC Adv 2015. [DOI: 10.1039/c5ra07966g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study reports a new pH sensor based on BSA-capped copper nanoclusters. The proposed pH sensor provides better sensitivity and a wider ranging pH response compared with other metal nanoclusters reported in the literature.
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Affiliation(s)
- Liao Xiaoqing
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi
- China
| | - Li Ruiyi
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi
- China
| | - Long Xiaohuan
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi
- China
| | - Li Zaijun
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi
- China
- The University of Birmingham
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50
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Lin YJ, Chen PC, Yuan Z, Ma JY, Chang HT. The isomeric effect of mercaptobenzoic acids on the preparation and fluorescence properties of copper nanoclusters. Chem Commun (Camb) 2015; 51:11983-6. [DOI: 10.1039/c5cc02342d] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Copper nanoclusters (Cu NCs) aggregates prepared from copper nitrate and mercaptobenzoic acid (MBA) isomers show differential optical properties.
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Affiliation(s)
- Yi-Jyun Lin
- Department of Chemistry
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Po-Cheng Chen
- Department of Chemistry
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Zhiqin Yuan
- Department of Chemistry
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Jia-Ying Ma
- Department of Chemistry
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Huan-Tsung Chang
- Department of Chemistry
- National Taiwan University
- Taipei 10617
- Taiwan
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