1
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Xia X. Total Protein Determination by Recovery Fluorescence of Trinitrotoluene-Quenched Protein-Functionalized Gold Nanoclusters. J Fluoresc 2024:10.1007/s10895-024-03853-z. [PMID: 39042355 DOI: 10.1007/s10895-024-03853-z] [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: 05/18/2024] [Accepted: 07/15/2024] [Indexed: 07/24/2024]
Abstract
Determination of total protein content is very important for clinical, pharmaceutical and food chemistry, and the simplicity and rapidity of the existing total protein content assays should be improved. Here, a novel fluorescent sensor for total protein content measurement was described using near-infrared emitting fluorescent gold nanoclusters, which were prepared with egg whites. Trinitrotoluene served as highly efficient quencher to quench the fluorescence of gold nanoclusters. Interestingly, the trinitrotoluene-protein complex that formed by premixing of trinitrotoluene and protein-containing real samples maintained the fluorescence of gold nanoclusters. These new findings provided a novel mechanism to design a fluorescence sensor for determination of total protein levels in various real samples. With available and low-cost bovine serum albumin as reference, the obtained standard curve for total protein determination indicated a linear range of 0.1-3.5 g L- 1 with a detection limit of 0.06 g L- 1 (3σ rule) and a correlation efficiency (R2) of 0.9850. The applicability of the proposed sensor was validated by determination of total protein levels in real samples. Comparison with the existing spectrophotometric methods, the proposed sensor is advantageous of simplicity, rapidity, and cost-effectiveness.
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Affiliation(s)
- Xiaodong Xia
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China.
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2
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Mymoona P, Rival JV, Nonappa, Shibu ES, Jeyabharathi C. Platinum-Grafted Twenty-Five Atom Gold Nanoclusters for Robust Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308610. [PMID: 38128011 DOI: 10.1002/smll.202308610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/15/2023] [Indexed: 12/23/2023]
Abstract
A robust hydrogen evolution is demonstrated from Au25(PET)18]- nanoclusters (PET = 2-phenylethanethiol) grafted with minimal platinum atoms. The fabrication involves an electrochemical activation of nanoclusters by partial removal of thiols, without affecting the metallic core, which exposes Au-sites adsorbed with hydrogen and enables an electroless grafting of platinum. The exposed Au-sites feature the (111)-facet of the fcc-Au25 nanoclusters as assessed through lead underpotential deposition. The electrochemically activated nanoclusters (without Pt loading) show better electrocatalytic reactivity toward hydrogen evolution reaction than the pristine nanoclusters in an acidic medium. The platinum-grafted nanocluster outperformed with a lower overpotential of 0.117 V vs RHE (RHE = Reversible Hydrogen Electrode) compared to electrochemically activated nanoclusters (0.353 V vs RHE ) at 10 mA cm-2 and is comparable with commercial Pt/C. The electrochemically activated nanoclusters show better reactivity at higher current density owing to the ease of hydrogen release from the active sites. The modified nanoclusters show unique supramolecular self-assembly characteristics as observed in electron microscopy and tomography due to the possible metallophilic interactions. These results suggest that the post-surface modification of nanoclusters will be an ideal tool to address the sustainable production of green hydrogen.
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Affiliation(s)
- Paloli Mymoona
- Electroplating and Metal Finishing Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Jose V Rival
- Smart Materials Lab, Department of Nanoscience and Technology (DNST), University of Calicut (UOC), Malappuram, Kerala, 673635, India
| | - Nonappa
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33101, Finland
| | - Edakkattuparambil Sidharth Shibu
- Smart Materials Lab, Department of Nanoscience and Technology (DNST), University of Calicut (UOC), Malappuram, Kerala, 673635, India
| | - Chinnaiah Jeyabharathi
- Electroplating and Metal Finishing Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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3
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Adhikari S, Noh D, Kim M, Ahn D, Jang Y, Oh E, Lee D. Vapor phase detection of explosives by surface enhanced Raman scattering under ambient conditions with metal nanogap structures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 311:123996. [PMID: 38350410 DOI: 10.1016/j.saa.2024.123996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/16/2024] [Accepted: 02/03/2024] [Indexed: 02/15/2024]
Abstract
Non-invasive and passive detection of explosives in the vapor phase is advantageous for military, counter-terrorism, and homeland security applications. Detection of explosives using SERS has been an active research topic. However, the vapor pressures of most explosives are low at room temperature, and consequently, the vapor phase detection by SERS is highly challenging without intentionally heating explosive powder to increase the vapor pressure. In this work, we report the rapid and sensitive detection of 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (2,4-DNT) in the vapor phase, using a gold nanogap (AuNG) SERS substrate. The AuNG SERS substrate was fabricated with electron beam evaporation, rapid thermal annealing, and wet etching. SERS measurements were carried out with an incident power as low as 0.56 mW at 785 nm. To prevent the condensation effect, the TNT and 2,4-DNT powders inside the cuvette were taken out before inserting the nanogap substrate. Our SERS results demonstrate the feasibility of the non-invasive detection of vapor phase explosives under ambient conditions.
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Affiliation(s)
- Samir Adhikari
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Daegwon Noh
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea; Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Minjun Kim
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Daehyun Ahn
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yudong Jang
- Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Eunsoon Oh
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea; Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea.
| | - Donghan Lee
- Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea; Institute of Quantum Systems, Chungnam National University, Daejeon 34134, Republic of Korea.
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4
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Noh D, Oh E. Estimation of Environmental Effects and Response Time in Gas-Phase Explosives Detection Using Photoluminescence Quenching Method. Polymers (Basel) 2024; 16:908. [PMID: 38611166 PMCID: PMC11013195 DOI: 10.3390/polym16070908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/13/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Detecting the presence of explosives is important to protect human lives during military conflicts and peacetime. Gas-phase detection of explosives can make use of the change of material properties, which can be sensitive to environmental conditions such as temperature and humidity. This paper describes a remote-controlled automatic shutter method for the environmental impact assessment of photoluminescence (PL) sensors under near-open conditions. Utilizing the remote-sensing method, we obtained environmental effects without being exposed to sensing vapor molecules and explained how PL intensity was influenced by the temperature, humidity, and exposure time. We also developed a theoretical model including the effect of exciton diffusion for PL quenching, which worked well under limited molecular diffusions. Incomplete recovery of PL intensity or the degradation effect was considered as an additional factor in the model.
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Affiliation(s)
- Daegwon Noh
- Department of Physics, Chungnam National University, 99 Daehakro, Yuseong-gu, Daejeon 34134, Republic of Korea;
- Institute of Quantum Systems (IQS), Chungnam National University, 99 Daehakro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Eunsoon Oh
- Department of Physics, Chungnam National University, 99 Daehakro, Yuseong-gu, Daejeon 34134, Republic of Korea;
- Institute of Quantum Systems (IQS), Chungnam National University, 99 Daehakro, Yuseong-gu, Daejeon 34134, Republic of Korea
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5
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Wang YN, Xu H, Wang SD, Feng WY, Mo Y, Bai JT, Qiu QC, Wang YT, Zhang MH, Yang QF. 3D Zn II-Based coordination polymer: Synthesis, structure and fluorescent sensing property for nitroaromatic compounds. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 297:122708. [PMID: 37043837 DOI: 10.1016/j.saa.2023.122708] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/29/2023] [Accepted: 04/02/2023] [Indexed: 05/14/2023]
Abstract
A water-stable ZnII-based coordination polymer (CP) with excellent photophysical behavior, namely [Zn2L(atez)(H2O)2] (compound 1; H3L = 4-(2',3'-dicarboxylphenoxy); atez = 5-aminotetrazole), was successfully prepared by the solvothermal reaction of Zn ions with a π-conjugated and semi-rigid multicarboxylate ligand H3L in the presence of N-containing linker atez. Compound 1 displays a hierarchically pillared three-dimensional (3D) (3,4,5)-connected (4·62) (42·64) (43·64·83) net which is based on two-dimensional (2D) multicarboxylate- ZnII layers strutted by the atez ligands. Sensing investigations of compound 1 reveal that this material can selectively and sensitively detect nitroaromatic compounds in water suspension through fluorescence quenching effect. In particular, it is worth noting that it shows highly specific detection of nitrobenzene (NB) and 2,4,6-trinitrophenol (TNP) with remarkable quenching constants (KSV = 7.5 × 104 M-1 for NB and KSV = 1.9 × 105 M-1 for TNP) and low limit of detection (LOD = 0.93 μM for NB and LOD = 0.36 μM for TNP). Investigations reveal that the probable mechanisms for such sensing processes are the concurrent presence of fluorescence resonance energy transfer (FRET) as well as photoinduced electron transfer (PET) between the CP and nitroaromatic molecules. This work not only offers an effective route to improve the application of fluorescent CPs but also provide one novel probable fluorescence probe for nitroaromatic compounds.
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Affiliation(s)
- Yan-Ning Wang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
| | - Hao Xu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Shao-Dan Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Wu-Yi Feng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Yuan Mo
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Jun-Tai Bai
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Qing-Chen Qiu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Yi-Tong Wang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Meng-Han Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
| | - Qing-Feng Yang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
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6
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Ren W, Tang Q, Cao H, Wang L, Zheng X. Biological Preparation of Chitosan-Loaded Silver Nanoparticles: Study of Methylene Blue Adsorption as Well as Antibacterial Properties under Light. ACS OMEGA 2023; 8:22998-23007. [PMID: 37396237 PMCID: PMC10308547 DOI: 10.1021/acsomega.3c02111] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/18/2023] [Indexed: 07/04/2023]
Abstract
Human beings have made significant progress in the medical field since antibiotics were widely used. However, the consequences caused by antibiotics abuse have gradually shown their negative effects. Antibacterial photodynamic therapy (aPDT) has the ability to resist drug-resistant bacteria without antibiotics, and as it is increasingly recognized that nanoparticles can effectively solve the deficiency problem of singlet oxygen produced by photosensitizers, the application performance and scope of aPDT are gradually being expanded. In this study, we used a biological template method to reduce Ag+ to silver atoms in situ with bovine serum albumin (BSA) rich in various functional groups in a 50 °C water bath. The aggregation of nanomaterials was inhibited by the protein's multistage structure so that the formed nanomaterials have good dispersion and stability. It is unexpected that we used chitosan microspheres (CMs) loaded with silver nanoparticles (AgNPs) to adsorb methylene blue (MB), which is both a pollutant and photosensitive substance. The Langmuir adsorption isothermal curve was used to fit the adsorption capacity. The exceptional multi-bond angle chelating forceps of chitosan make it have a powerful physical adsorption capacity, and dehydrogenated functional groups of proteins with negative charge can also bond to positively charged MB to form a certain amount of ionic bonds. Compared with single bacteriostatic materials, the bacteriostatic capacity of the composite materials adsorbing MB under light was significantly improved. This composite material not only has a strong inhibitory effect on Gram-negative bacteria but also has a good inhibitory effect on the growth of Gram-positive bacteria poorly affected by conventional bacteriostatic agents. In conclusion, the CMs loaded with MB and AgNPs have some possible applications in the purification or treatment of wastewater in the future.
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Affiliation(s)
- Wensheng Ren
- College
of Environmental and Chemical Engineering, Dalian University, Dalian 116622, China
| | - Qian Tang
- Liaoning
Key Laboratory of Bio-Organic Chemistry, Dalian University, Dalian 116622, China
- College
of Life and healthy, Dalian University, Dalian 116622, China
| | - Hongyu Cao
- Liaoning
Key Laboratory of Bio-Organic Chemistry, Dalian University, Dalian 116622, China
- College
of Life and healthy, Dalian University, Dalian 116622, China
| | - Lihao Wang
- College
of Environmental and Chemical Engineering, Dalian University, Dalian 116622, China
- Liaoning
Key Laboratory of Bio-Organic Chemistry, Dalian University, Dalian 116622, China
| | - Xuefang Zheng
- College
of Environmental and Chemical Engineering, Dalian University, Dalian 116622, China
- Liaoning
Key Laboratory of Bio-Organic Chemistry, Dalian University, Dalian 116622, China
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7
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Song N, Li W, Luo W, Zhai Z, Wang S, Huai R, Zhang D, Zhou Z, Yang L. Efficient and selective fluorescence sensing of nitro-containing aromatic compounds by a binuclear lanthanide-based metal-organic framework. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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S A, B S S, Reddy MLP. Phosphorescent Iridium Molecular Materials as Chemosensors for Nitroaromatic Explosives: Recent Advances. COMMENT INORG CHEM 2022. [DOI: 10.1080/02603594.2022.2090347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Anjali S
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695 019, India
| | - Sasidhar B S
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695 019, India
| | - M L P Reddy
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695 019, India
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9
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Partial Phosphorization: A Strategy to Improve Some Performance(s) of Thiolated Metal Nanoclusters Without Notable Reduction of Stability. Chemistry 2022; 28:e202200212. [DOI: 10.1002/chem.202200212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Indexed: 11/07/2022]
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10
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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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11
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A K A, Babu A R S, A Anappara A, N K R. Specific ultralow level chemo-recognition using Graphene-fluorophore supramolecular assembly: Fine-tuning the fluorophore framework. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 266:120408. [PMID: 34592481 DOI: 10.1016/j.saa.2021.120408] [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: 07/16/2021] [Revised: 09/11/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
The non-covalent interactions between graphene and aromatic fluorophores have generated highly sensitive fluorimetric turn-on sensors for various significant analytes. Herein, the supramolecular interaction between reduced graphene oxide and 7-Hydroxy-4-Methyl-8-Amino Coumarin is made use of for tracing Cu2+ at sub-zeptomole level with excellent selectivity among a collection of nineteen metal ions. The system enables quantification of the analyte in a commendably wide range, from micromolar to zeptomolar, a feature that almost all-optical sensors lack. Handy solid-state sensor strip fabricated using the above-mentioned supramolecular combination enabled visual recognition of Cu2+ions at the molecular level. Based on the chemo recognition ability of the fluorophore, multiple Boolean logic devices operating at the molecular level are proposed. By screening pertinent coumarin derivatives, it is demonstrated that the selectivity and sensitivity of the sensors of this sort are decided by the number of π- interaction centers of the fluorophores and the strength by which they interact with graphene, respectively, which will enable identification and modification of proper fluorophores for ultra-trace detection of contaminants of environmental relevance from aqueous solutions.
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Affiliation(s)
- Akhila A K
- Department of Chemistry, University of Calicut, Kerala 673635, India
| | - Suresh Babu A R
- Department of Chemistry, University of Calicut, Kerala 673635, India.
| | - Aji A Anappara
- Department of Physics, National Institute of Technology Calicut (NITC), Kerala 673601, India.
| | - Renuka N K
- Department of Chemistry, University of Calicut, Kerala 673635, India.
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12
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Raichure PC, Bhatt R, Kachwal V, Sharma TC, Laskar IR. Multi-stimuli distinct responsive D–A based fluorogen oligomeric tool and efficient detection of TNT vapor. NEW J CHEM 2022. [DOI: 10.1039/d1nj05314k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
P1 shows distinct emission responses with multi-stimuli, i.e., quenching for TNT sensing, red shifting for acid and base vapors, blue shifting against MFC behavior, and solvent polarity-dependent emission.
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Affiliation(s)
- Pramod C. Raichure
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Ramprasad Bhatt
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Vishal Kachwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
| | | | - Inamur Rahaman Laskar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
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13
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Chang H, Bootharaju MS, Lee S, Kim JH, Kim BH, Hyeon T. To inorganic nanoparticles via nanoclusters: Nonclassical nucleation and growth pathway. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hogeun Chang
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Megalamane S. Bootharaju
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Sanghwa Lee
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Jeong Hyun Kim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Byung Hyo Kim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- Department of Organic Materials and Fiber Engineering Soongsil University Seoul Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
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14
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Rival JV, Mymoona P, Lakshmi KM, Pradeep T, Shibu ES. Self-Assembly of Precision Noble Metal Nanoclusters: Hierarchical Structural Complexity, Colloidal Superstructures, and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2005718. [PMID: 33491918 DOI: 10.1002/smll.202005718] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/07/2020] [Indexed: 06/12/2023]
Abstract
Ligand protected noble metal nanoparticles are excellent building blocks for colloidal self-assembly. Metal nanoparticle self-assembly offers routes for a wide range of multifunctional nanomaterials with enhanced optoelectronic properties. The emergence of atomically precise monolayer thiol-protected noble metal nanoclusters has overcome numerous challenges such as uncontrolled aggregation, polydispersity, and directionalities faced in plasmonic nanoparticle self-assemblies. Because of their well-defined molecular compositions, enhanced stability, and diverse surface functionalities, nanoclusters offer an excellent platform for developing colloidal superstructures via the self-assembly driven by surface ligands and metal cores. More importantly, recent reports have also revealed the hierarchical structural complexity of several nanoclusters. In this review, the formulation and periodic self-assembly of different noble metal nanoclusters are focused upon. Further, self-assembly induced amplification of physicochemical properties, and their potential applications in molecular recognition, sensing, gas storage, device fabrication, bioimaging, therapeutics, and catalysis are discussed. The topics covered in this review are extensively associated with state-of-the-art achievements in the field of precision noble metal nanoclusters.
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Affiliation(s)
- Jose V Rival
- Smart Materials Lab, Electrochemical Power Sources (ECPS) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad, Uttar Pradesh, 201002, India
| | - Paloli Mymoona
- Smart Materials Lab, Electrochemical Power Sources (ECPS) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad, Uttar Pradesh, 201002, India
| | - Kavalloor Murali Lakshmi
- Smart Materials Lab, Electrochemical Power Sources (ECPS) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad, Uttar Pradesh, 201002, India
| | - Thalappil Pradeep
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology (IIT) Madras, Chennai, Tamil Nadu, 600036, India
| | - Edakkattuparambil Sidharth Shibu
- Smart Materials Lab, Electrochemical Power Sources (ECPS) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad, Uttar Pradesh, 201002, India
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15
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Bodiuzzaman M, Dar WA, Pradeep T. Cocrystals of Atomically Precise Noble Metal Nanoclusters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2003981. [PMID: 33185007 DOI: 10.1002/smll.202003981] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/21/2020] [Indexed: 06/11/2023]
Abstract
Cocrystallization is a phenomenon involving the assembly of two or more different chemical entities in a lattice, occurring typically through supramolecular interactions. In this concept, recent advancements in the cocrystallization of atomically precise noble metal clusters and their potential future directions are presented. Different strategies to create coassemblies of thiolate-protected noble metal nanoclusters are presented first. An approach is the simultaneous synthesis, and cocrystallization of two clusters having similar structures. A unique pair of clusters found recently, namely Ag40 and Ag46 with same core but different shell are taken to illustrate this. In another category, the case of the same core is presented, namely Ag116 with different shells, as in a mixture of Ag210 and Ag211 . Next, an intercluster reaction is presented to create cocrystals through selective crystallization of the reaction products. The coexistence of competing effects, magic sizes, and magic electron shells in a coassembly of alloy nanoclusters is discussed next. Finally, an assembly strategy for nanoclusters using electrostatic interactions is described. This concept is concluded with a future perspective on the emerging possibilities of such solids. Advancements in this field will certainly help the development of novel materials with exciting properties.
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Affiliation(s)
- Mohammad Bodiuzzaman
- Department of Chemistry, DST Unit of Nanoscience and Thematic Unit of Excellence, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Wakeel Ahmed Dar
- Department of Chemistry, DST Unit of Nanoscience and Thematic Unit of Excellence, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Thalappil Pradeep
- Department of Chemistry, DST Unit of Nanoscience and Thematic Unit of Excellence, Indian Institute of Technology Madras, Chennai, 600036, India
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16
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Rival JV, Mymoona P, Vinoth R, Mohan AMV, Shibu ES. Light-Emitting Atomically Precise Nanocluster-Based Flexible QR Codes for Anticounterfeiting. ACS APPLIED MATERIALS & INTERFACES 2021; 13:10583-10593. [PMID: 33591728 DOI: 10.1021/acsami.0c21127] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Despite tremendous progress in the field of fluorescence-based anticounterfeiting, the advanced anticounterfeiting techniques are still posing challenges all over the world due to their cost and reliability. Recently, light-emitting atomically precise nanoclusters have emerged as attractive building blocks because of their well-defined structure, function, and stable photoluminescence. Herein, we report the room temperature fabrication of a stable, flexible, nontoxic, and low-cost precision nanocluster-based luminescent ink for the stencil printing of an optically unclonable security label. Nanocluster-based printing ink shows brilliant photoluminescence owing to its extended C-H···π/π···π interactions. Spectroscopic and microscopic investigations show that intercalated nanoclusters in the printed security labels are highly stable as their optical features and molecular compositions are unaffected. The exceptional mechanical, thermal, photo, and aqueous stabilities of the printed security labels endorse to demonstrate the printing and smartphone-based electronic reading of the quick response code on a currency. Finally, confidential information protection and decryption under a precise window of light have been achieved by adopting the optical contrast illusion. The overall cost of the security label is found to be approximately 0.013 USD per stamp.
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Affiliation(s)
- Jose V Rival
- Smart Materials Lab, Electrochemical Power Sources (ECPS) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad 201002, Uttar Pradesh, India
| | - Paloli Mymoona
- Smart Materials Lab, Electrochemical Power Sources (ECPS) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad 201002, Uttar Pradesh, India
| | - Rajendran Vinoth
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad 201002, Uttar Pradesh, India
- Electrodics and Electrocatalysis (EEC) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - A M Vinu Mohan
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad 201002, Uttar Pradesh, India
- Electrodics and Electrocatalysis (EEC) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Edakkattuparambil Sidharth Shibu
- Smart Materials Lab, Electrochemical Power Sources (ECPS) Division, Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR)-CSIR, Ghaziabad 201002, Uttar Pradesh, India
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17
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Ghosh D, Ganayee MA, Som A, Srikrishnarka P, Murali N, Bose S, Chakraborty A, Mondal B, Ghosh P, Pradeep T. Hierarchical Assembly of Atomically Precise Metal Clusters as a Luminescent Strain Sensor. ACS APPLIED MATERIALS & INTERFACES 2021; 13:6496-6504. [PMID: 33512132 DOI: 10.1021/acsami.0c19239] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We demonstrate the formation of a versatile luminescent organo-inorganic layered hybrid material, composed of bovine serum albumin (BSA)-protected Au30 clusters and aminoclay sheets. X-ray diffraction revealed the intercalation of Au30@BSA in the layered superstructure of aminoclay sheets. Coulombic attraction of the clusters and the clay initiates the interaction, and the appropriate size of the clusters allowed them to intercalate within the lamellar aminoclay galleries. Electron microscopy measurements confirmed the hierarchical structure of the material and also showed the cluster-attached clay sheets. Zeta potential measurement and dynamic light scattering probed the gradual formation of the ordered aggregates in solution. The hybrid material could be stretched up to 300% without fracture. The emergence of a new peak in the luminescence spectrum was observed during the course of mechanical stretching. This peak increased in intensity gradually with the degree of elongation or strain of the material. A mechanochromic luminescence response was further demonstrated with a writing experiment on a luminescent mat of the material, made by electrospinning.
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Affiliation(s)
- Debasmita Ghosh
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Mohd Azhardin Ganayee
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Anirban Som
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pillalamarri Srikrishnarka
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Nidhi Murali
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India
| | - Sandeep Bose
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Amrita Chakraborty
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Biswajit Mondal
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pijush Ghosh
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India
| | - Thalappil Pradeep
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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18
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4-Iodophenylboronic Acid Stabilized Gold Cluster as a New Fluorescent Chemosensor for Saccharides Based on Excimer Emission Quenching. J Fluoresc 2021; 31:447-454. [PMID: 33417107 DOI: 10.1007/s10895-020-02672-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/28/2020] [Indexed: 10/22/2022]
Abstract
4-iodophenylboronic acid (IPBA) ligated luminescent gold cluster was synthesized by mixing an aqueous solution of IBPA and polyvinylpyrrolidone stabilized gold cluster (Au:PVP) in water at room temperature through chemisorption of iodine on gold nano surface. Transmission Electron microscopy (TEM) and matrix assisted laser desorption ionization (MALDI) analysis revealed that the size of these Au-clusters (1.4±0.2 nm) remain unchanged without any noticeable aggregation during synthesis. Owing to the formation of excimer between aryl moieties grafted over Au surface, the cluster exhibit strong emission peak at 335 nm. This luminescent gold cluster is used for sensing different saccharides in water at physiological pH through quenching of excimer emission peak. This strong excimer emission is significantly quenched in presence of saccharides through interaction with boronic acid moieties. The selectivity for different saccharides follows the order: fructose > galactose > maltose > glucose ~ ribose > sorbitol with hight affinity for fructose (KSV = 1.54 × 104 M-1) with Limit of Detection (LOD) of 100 μM.
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19
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Bakhshpour M, Denizli A. Highly sensitive detection of Cd(II) ions using ion-imprinted surface plasmon resonance sensors. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105572] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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20
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Atomically precise palladium nanocluster catalyzed tandem oxidation processes of alcohols and phosphorous ylides: Facile access to α,β-unsaturated esters. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Nagar A, Pradeep T. Clean Water through Nanotechnology: Needs, Gaps, and Fulfillment. ACS NANO 2020; 14:6420-6435. [PMID: 32433866 DOI: 10.1021/acsnano.9b01730] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Sustainable nanotechnology has made substantial contributions in providing contaminant-free water to humanity. In this Review, we present the compelling need for providing access to clean water through nanotechnology-enabled solutions and the large disparities in ensuring their implementation. We also discuss the current nanotechnology frontiers in diverse areas of the clean water space with an emphasis on applications in the field and provide suggestions for future research. Extending the vision of sustainable and affordable clean water to environment in general, we note that cities can live and breathe well by adopting such technologies. By understanding the global environmental challenges and exploring remedies from emerging nanotechnologies, sustainability in clean water can be realized. We suggest specific pointers and quantify the impact of such technologies.
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Affiliation(s)
- Ankit Nagar
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600036, India
| | - Thalappil Pradeep
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600036, India
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22
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Gajarushi AS, Surya SG, Walawalkar MG, Ravikanth M, Rao VR, Subramaniam C. Ultra-sensitive gas phase detection of 2,4,6-trinitrotoluene by non-covalently functionalized graphene field effect transistors. Analyst 2020; 145:917-928. [PMID: 31820747 DOI: 10.1039/c9an01962f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The high energy density (4.2 MJ kg-1) and low vapour pressure (7.2 × 10-9 atm) of chemical explosives such as TNT (2,4,6-trinitrotoluene) pose a grave security risk demanding immediate attention. Detection of such hazardous and highly challenging chemicals demands specific, ultra-sensitive and rapid detection platforms that can concomitantly transduce the signal as an electrical readout. Although chemo-sensitive strategies have been investigated, the majority of them are restricted to detecting TNT from solutions and are therefore not implementable in real-time, on-field situations. Addressing this demand, we report an ultra-sensitive (parts-per-billion) and rapid (∼40 s) detection platform for TNT based on non-covalently functionalized graphene field effect transistors (GFETs). This multi-parametric GFET detector exhibits a reliable and specific modulation in its Dirac point upon exposure to TNT in the vapour phase. The chemical specificity provided by 5-(4-hydroxyphenyl)-10,15,20-tri(p-tolyl) zinc porphyrin (ZnTTPOH) is synergistically combined with the high surface sensitivity of graphene through a non-covalent functionalization approach to realise p-doped GFETs (Zn-GFETs). Such a FET platform exhibits extremely sensitive shifts in Dirac point (ΔDP) that correlate with the number of nitro groups present in the analyte. Analytes with mono-, di-, and tri-nitro substituted aromatic molecules exhibit distinctly different ΔDP, leading to unprecedented specificity towards TNT. Additionally, the Dirac point of Zn-GFETs is invariant for common and potential interferons such as acetone and 2-propanol (perfume emulsifiers) thereby validating their practical applicability. Furthermore, the ΔDP is also manifested as changes in the contact potential of GFETs, indicating that sub-monolayer coverage of ZnTTPOH is sufficient to modulate the transfer characteristics of GFETs over an area 1000 times larger than the dopant dimensions. Specifically, ZnTTPOH-functionalized GFETs exhibit p-doped behaviour with positive ΔDP with respect to pristine GFETs. Such p-doped Zn-GFETs undergo selective charge-transfer mediated interactions with TNT resulting in enhanced electron withdrawal from Zn-GFETs. Thus the ΔDP shifts to a higher positive gate voltage leading to the dichotomous combination of the highest signal generation (1.2 × 1012 V mol-1) with ppb level molecular sensitivity. Significantly, the signal generated due to TNT is 105 times higher in magnitude compared to other potential interferons. The signal reliability is established in cross-sensitivity measurements carried out with a TNT-mDNB (1 : 10 molar ratio) mixture pointing to high specificity for immediate applications under atmospherically relevant conditions pertaining to homeland security and global safety.
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Affiliation(s)
- Ashwini S Gajarushi
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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23
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Maity S, Bain D, Patra A. An overview on the current understanding of the photophysical properties of metal nanoclusters and their potential applications. NANOSCALE 2019; 11:22685-22723. [PMID: 31774095 DOI: 10.1039/c9nr07963g] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Photophysics of atomically precise metal nanoclusters (MNCs) is an emerging area of research due to their potential applications in optoelectronics, photovoltaics, sensing, bio-imaging and catalysis. An overview of the recent advances in the photophysical properties of MNCs is presented in this review. To begin with, we illustrate general synthesis methodologies of MNCs using direct reduction, chemical etching, ligand exchange, metal exchange and intercluster reaction. Due to strong quantum confinement, the NCs possess unique electronic properties such as discrete optical absorption, intense photoluminescence (PL), molecular-like electron dynamics and non-linear optical behavior. Discussions have also been carried out to unveil the influence of the core size, nature of ligands, heteroatom doping, and surrounding environments on the optical absorption and photophysical properties of metal clusters. Recent findings reveal that the excited-state dynamics, nonlinear optical properties and aggregation induced emission of metal clusters offer exciting opportunities for potential applications. We discuss briefly about their versatile applications in optoelectronics, sensing, catalysis and bio-imaging. Finally, the future perspective of this research field is given.
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Affiliation(s)
- Subarna Maity
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India.
| | - Dipankar Bain
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India.
| | - Amitava Patra
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India.
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24
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Cao C, Liu J, Cao C. Investigation on the UV spectra of the supermolecular system involving silver nanoparticles–substituted
N
‐(phenyl‐ethylene)‐anilines. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.3993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chao‐Tun Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan China
| | - Junlan Liu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan China
| | - Chenzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Key Laboratory of QSAR/QSPR of Hunan Provincial University, School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan China
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25
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Mandal M, Balamurugan R. Efficient Sensing of Trinitrotoluene Using a Photoluminescent Benzo[
a
]fluorenone Derivative. ChemistrySelect 2019. [DOI: 10.1002/slct.201902639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mou Mandal
- School of ChemistryUniversity of Hyderabad, Gachibowli Hyderabad- 500046 India
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26
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Khatun E, Bodiuzzaman M, Sugi KS, Chakraborty P, Paramasivam G, Dar WA, Ahuja T, Antharjanam S, Pradeep T. Confining an Ag 10 Core in an Ag 12 Shell: A Four-Electron Superatom with Enhanced Photoluminescence upon Crystallization. ACS NANO 2019; 13:5753-5759. [PMID: 31017759 DOI: 10.1021/acsnano.9b01189] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We introduce a cluster coprotected by thiol and diphosphine ligands, [Ag22(dppe)4(2,5-DMBT)12Cl4]2+ (dppe = 1,2-bis(diphenylphosphino)ethane; 2,5-DMBT= 2,5-dimethylbenzenethiol), which has an Ag10 core encapsulated by an Ag12(dppe)4(2,5-DMBT)12Cl4 shell. The Ag10 core comprises two Ag5 distorted trigonal bipyramidal units and is uncommon in Au and Ag nanoclusters. The electrospray ionization mass spectrum reveals that the cluster is divalent and contains four free electrons. An uncommon crystallization-induced enhancement of emission is observed in the cluster. The emission is weak in the solution and amorphous states. However, it is enhanced 12 times in the crystalline state compared to the amorphous state. A detailed investigation of the crystal structure suggests that well-arranged C-H···π and π···π interactions between the ligands are the major factors for this enhanced emission. Further, in-depth structural elucidation and density functional theory calculations suggest that the cluster is a superatom with four magic electrons.
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Affiliation(s)
- Esma Khatun
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Mohammad Bodiuzzaman
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Korath Shivan Sugi
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Papri Chakraborty
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Ganesan Paramasivam
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Wakeel Ahmed Dar
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Tripti Ahuja
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Sudhadevi Antharjanam
- Sophisticated Analytical Instruments Facility , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Thalappil Pradeep
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) , Indian Institute of Technology Madras , Chennai 600036 , India
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27
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Ishida Y, Suzuki J, Akita I, Yonezawa T. Ultrarapid Cationization of Gold Nanoparticles via a Single-Step Ligand Exchange Reaction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10668-10672. [PMID: 30089213 DOI: 10.1021/acs.langmuir.8b02226] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We propose a novel method for the ultrarapid cationization of gold nanoparticles with diameters ranging from several to a hundred nanometers via a single-step ligand exchange reaction of citrate-protected anionic gold nanoparticles with cationic thiol ligand. This reaction was performed only in an aqueous medium via a single step from citrate to cationic thiol and therefore enables a rapid preparation of cationic Au nanoparticles without a contamination of organic solvent or lipid-soluble molecules. The cationization was successfully completed within 20 min without changes in the core diameter and optical characteristic.
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Affiliation(s)
- Yohei Ishida
- Division of Material Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
| | - Jun Suzuki
- Division of Material Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
| | - Ikumi Akita
- Division of Material Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
| | - Tetsu Yonezawa
- Division of Material Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
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28
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Kang X, Chong H, Zhu M. Au 25(SR) 18: the captain of the great nanocluster ship. NANOSCALE 2018; 10:10758-10834. [PMID: 29873658 DOI: 10.1039/c8nr02973c] [Citation(s) in RCA: 180] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Noble metal nanoclusters are in the intermediate state between discrete atoms and plasmonic nanoparticles and are of significance due to their atomically accurate structures, intriguing properties, and great potential for applications in various fields. In addition, the size-dependent properties of nanoclusters construct a platform for thoroughly researching the structure (composition)-property correlations, which is favorable for obtaining novel nanomaterials with enhanced physicochemical properties. Thus far, more than 100 species of nanoclusters (mono-metallic Au or Ag nanoclusters, and bi- or tri-metallic alloy nanoclusters) with crystal structures have been reported. Among these nanoclusters, Au25(SR)18-the brightest molecular star in the nanocluster field-is capable of revealing the past developments and prospecting the future of the nanoclusters. Since being successfully synthesized (in 1998, with a 20-year history) and structurally determined (in 2008, with a 10-year history), Au25(SR)18 has stimulated the interest of chemists as well as material scientists, due to the early discovery, easy preparation, high stability, and easy functionalization and application of this molecular star. In this review, the preparation methods, crystal structures, physicochemical properties, and practical applications of Au25(SR)18 are summarized. The properties of Au25(SR)18 range from optics and chirality to magnetism and electrochemistry, and the property-oriented applications include catalysis, chemical imaging, sensing, biological labeling, biomedicine and beyond. Furthermore, the research progress on the Ag-based M25(SR)18 counterpart (i.e., Ag25(SR)18) is included in this review due to its homologous composition, construction and optical absorption to its gold-counterpart Au25(SR)18. Moreover, the alloying methods, metal-exchange sites and property alternations based on the templated Au25(SR)18 are highlighted. Finally, some perspectives and challenges for the future research of the Au25(SR)18 nanocluster are proposed (also holding true for all members in the nanocluster field). This review is directed toward the broader scientific community interested in the metal nanocluster field, and hopefully opens up new horizons for scientists studying nanomaterials. This review is based on the publications available up to March 2018.
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Affiliation(s)
- Xi Kang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Institute of Physical Science and Information Technology and AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.
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29
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Feng Z, Zhong J, Guan W, Tian R, Lu C, Ding C. Three-dimensional direct visualization of silica dispersion in polymer-based composites. Analyst 2018; 143:2090-2095. [PMID: 29629445 DOI: 10.1039/c8an00016f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We present a novel strategy for realizing the three-dimensional direct visualization of silica dispersion by the fluorescence modification of a silica filler.
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Affiliation(s)
- Zemin Feng
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Jinpan Zhong
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Rui Tian
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Caifeng Ding
- State Key Laboratory of Sensor Analysis of Tumor Marker
- Qingdao University of Science and Technology
- Qingdao 266061
- China
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30
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Nair LV, Nair RV, Shenoy SJ, Thekkuveettil A, Jayasree RS. Blood brain barrier permeable gold nanocluster for targeted brain imaging and therapy: an in vitro and in vivo study. J Mater Chem B 2017; 5:8314-8321. [PMID: 32264500 DOI: 10.1039/c7tb02247f] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Blood brain barrier (BBB) is a dynamic interface, comprising polarized endothelial cells, that separates the brain from the circulatory system. The highly protective nature of this tight junction impairs diagnosis and treatment of brain disorders. In this study, we designed a sub atomic size, near infrared emitting, dual function glutathione gold cluster with high fluorescence yield to facilitate permeability of BBB, for imaging applications and drug delivery. The gold cluster was then modified with Levodopa (l-dopa), to utilize the large amino acid transporter 1 (LAT1) pathways to enhance brain entry. Uptake and permeability of the nanoprobes were demonstrated using an established model of BBB, comprising brain endothelial cells (bEnd.3). The uptake and the clearance of l-dopa modified cluster was faster than the glutathione cluster. l-Dopa modified cluster supports the slow and sustained delivery of a model drug, pilocarpine, to the brain. Results of in vivo imaging and drug release in normal mice hold promise for considering the probe for early diagnosis of brain diseases, when the barrier is not disrupted, and for subsequent drug treatment.
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Affiliation(s)
- L V Nair
- Division of Biophotonics and Imaging, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Trivandrum-695012, India.
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31
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Chakraborty I, Pradeep T. Atomically Precise Clusters of Noble Metals: Emerging Link between Atoms and Nanoparticles. Chem Rev 2017; 117:8208-8271. [DOI: 10.1021/acs.chemrev.6b00769] [Citation(s) in RCA: 1305] [Impact Index Per Article: 186.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Indranath Chakraborty
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Thalappil Pradeep
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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32
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Maity P, Bhatt A, Agrawal B, Jana A. Pt(II)C ∧N ∧N-Based Luminophore-Micelle Adducts for Sensing Nitroaromatic Explosives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4291-4300. [PMID: 28395513 DOI: 10.1021/acs.langmuir.7b00869] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two luminescent cyclometalated Pt(II)-complexes, 1•Pt and 2•Pt, respectively, were synthesized by using unsymmetrical C∧N∧N ligands having different alkyl substituents. These π-electron-rich complexes are used for sensing various electron deficient nitroaromatic explosives, e.g., 4-nitrotoluene (NT), 2,4-dinitrotoluene (DNT), 2,4,6-trinitrotoluene (TNT), and 2,4,6-trinitrophenol (TNP), in aqueous, nonaqueous, as well as in the solid state as a paper strip with maximum detection limit of ca. 10-9 M. It was demonstrated that the sparingly soluble 2•Pt complex becomes water-soluble in the presence of all kinds of surfactants, viz., cationic (e.g., cetyltrimethylammonium bromide, CTAB), anionic (e.g., sodium dodecyl sulfate, SDS), and neutral (e.g., Triton X-100). This may be due to the incorporation of its long lyophilic tail group (-C12H25) inside the micellar core, exposing planar Pt(II)C∧N∧N headgroup to the aqueous bulk phase. It was also observed that the extent of solubility of these Pt(II)-complexes in micellar media strongly depends on the length of the existing alkyl chain. For instance, the presence of longer dodecyl chain makes 2•Pt complex ca. 1000-fold more soluble than the complex 1•Pt, which contains a shorter propyl chain. Their sensing behavior essentially arises by the quenching of Pt(II)-based intense luminescence due to the supramolecular charge transfer (CT) process originating from Pt(II)C∧N∧N-antenna to the electron deficient nitroaromatic explosives. Our present work shows that the micellar adducts formed by highly luminophoric material and surfactant molecules could effectively detect such explosives in aqueous medium with better sensitivity compared to what were observed in other media.
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Affiliation(s)
- Prasenjit Maity
- Institute of Research and Development, Gujarat Forensic Sciences University , Gandhinagar 382007, India
| | - Aarti Bhatt
- Institute of Research and Development, Gujarat Forensic Sciences University , Gandhinagar 382007, India
| | - Bhavesh Agrawal
- Institute of Research and Development, Gujarat Forensic Sciences University , Gandhinagar 382007, India
| | - Atanu Jana
- Department of Chemistry, University of Sheffield , Sheffield, S3 7HF, United Kingdom
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33
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Optical trapping-assisted SERS platform for chemical and biosensing applications: Design perspectives. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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34
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Hu D, Jin S, Shi Y, Wang X, Graff RW, Liu W, Zhu M, Gao H. Preparation of hyperstar polymers with encapsulated Au 25(SR) 18 clusters as recyclable catalysts for nitrophenol reduction. NANOSCALE 2017; 9:3629-3636. [PMID: 28247888 DOI: 10.1039/c6nr09727h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A robust approach is developed to prepare hyperstar polymer-Au25(SR)18 nanocomposites for catalysis. The synthesis started with atom transfer radical copolymerization of an inimer with a cyclic disulfide-containing methacrylate monomer in a microemulsion to produce hyperbranched copolymers with high molar mass, low polydispersity, and a vital fraction of dangling disulfide groups. The core-shell structured hyperstar polymers were then prepared using hyperbranched copolymers as macroinitiators to polymerize oligo(ethylene glycol) methyl ether methacrylate (Mn = 500) and grow the radiating arms. The hyperstar polymers with disulfide groups were proved to efficiently encapsulate Au25(SR)18 nanoclusters through ligand exchange without destroying the fine structure of the Au25(SR)18 clusters. The obtained hyperstar-Au25(SR)18 nanocomposites showed great stability with no size change after a three-month shelf storage. They were used as efficient catalysts for the catalytic reduction of 4-nitrophenol by NaBH4, showing convenient recovery and reuse without losing catalytic efficiency.
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Affiliation(s)
- Daqiao Hu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA. and School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230039, China.
| | - Shan Jin
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230039, China.
| | - Yi Shi
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA.
| | - Xiaofeng Wang
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA.
| | - Robert W Graff
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA.
| | - Wenqi Liu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA.
| | - Manzhou Zhu
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials, Anhui University, Hefei 230039, China.
| | - Haifeng Gao
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA.
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35
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Jeseentharani V, Pugazhenthiran N, Mathew A, Chakraborty I, Baksi A, Ghosh J, Jash M, Anjusree GS, Deepak TG, Nair AS, Pradeep T. Atomically Precise Noble Metal Clusters Harvest Visible Light to Produce Energy. ChemistrySelect 2017. [DOI: 10.1002/slct.201601730] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- V. Jeseentharani
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - N. Pugazhenthiran
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Ammu Mathew
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Indranath Chakraborty
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Ananya Baksi
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Jyotirmoy Ghosh
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Madhuri Jash
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - G. S. Anjusree
- Amrita Centre for Nanosciences and Molecular Medicine; Amrita Institute of Medical Sciences (AIMS); Ponekkara, AIMS PO Kochi 682041 India
| | - T. G. Deepak
- Amrita Centre for Nanosciences and Molecular Medicine; Amrita Institute of Medical Sciences (AIMS); Ponekkara, AIMS PO Kochi 682041 India
| | - A. Sreekumaran Nair
- Amrita Centre for Nanosciences and Molecular Medicine; Amrita Institute of Medical Sciences (AIMS); Ponekkara, AIMS PO Kochi 682041 India
| | - T. Pradeep
- DST Unit of Nanoscience (DST UNS) and Thermatic Unit of Excellence; Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
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36
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A single molecular fluorescent probe for selective and sensitive detection of nitroaromatic explosives: A new strategy for the mask-free discrimination of TNT and TNP within same sample. Talanta 2017; 166:228-233. [PMID: 28213227 DOI: 10.1016/j.talanta.2017.01.046] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/06/2017] [Accepted: 01/16/2017] [Indexed: 02/03/2023]
Abstract
A simple naphthalene based fluorescent probe was first time reported as dual sensing of 2,4,6-trinitrotolune (TNT) and 2,4,6-trinitrophenol (TNP) by distinguishable changes in both solution color change and fluorescence within same sample without any mask agent. Upon addition of TNT and TNP, the strong emission quenching at 412nm and a new emission band at 530nm was observed, respectively. In addition, the sensing mechanism was evaluated by DFT calculations by Gaussian 09 software.
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37
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Ghosh A, Ghosh D, Khatun E, Chakraborty P, Pradeep T. Unusual reactivity of dithiol protected clusters in comparison to monothiol protected clusters: studies using Ag 51(BDT) 19(TPP) 3 and Ag 29(BDT) 12(TPP) 4. NANOSCALE 2017; 9:1068-1077. [PMID: 27906399 DOI: 10.1039/c6nr07692k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We report the synthesis and unique reactivity of a new green dithiol protected cluster (DTPC), Ag51(BDT)19(TPP)3 (BDT and TPP are 1,3-benzenedithiol and triphenylphosphine, respectively). The cluster composition was confirmed by electrospray ionization (ESI) and matrix-assisted laser desorption ionization (MALDI) mass spectrometric studies as well as by other supporting data. Surprisingly, the chemical reactivity between this DTPC and Au25(SR)18 involves only metal ion exchange in Au25(SR)18 without any ligand exchange, while reactions between monothiol protected clusters (MTPCs) show both metal and ligand exchange, an example being the reaction between Ag25DMBT18 and Au25PET18 (where DMBT and PET are 2,4-dimethylbenzenethiol and phenylethanethiol, respectively). The conclusions have been confirmed by the reaction of another DTPC, Ag29(BDT)12(TPP)4 with Au25BT18 (where BT corresponds to butanethiol) in which only metal exchange happens in Au25BT18. We also show the conversion of Ag51(BDT)19(TPP)3 to Ag29(BDT)12(TPP)4 in the presence of a second monothiol, DMBT which does not get integrated into the product cluster. This is completely different from the previous understanding wherein the reaction between MTPCs and a second thiol leads to either mixed thiol protected clusters with the same core composition or a completely new cluster core protected with the second thiol. The present study exposes a new avenue of research for monolayer protected clusters, which in turn will give additional impetus to explore the chemistry of DTPCs.
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Affiliation(s)
- Atanu Ghosh
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Debasmita Ghosh
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Esma Khatun
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Papri Chakraborty
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Thalappil Pradeep
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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38
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Sun M, Qian H, Liu J, Li Y, Pang S, Xu M, Zhang J. A flexible conductive film prepared by the oriented stacking of Ag and Au/Ag alloy nanoplates and its chemically roughened surface for explosive SERS detection and cell adhesion. RSC Adv 2017. [DOI: 10.1039/c6ra25956a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A Au–Ag alloy with oriented stacking has applications in SERS detection and cell adhesion.
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Affiliation(s)
- Mingming Sun
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Hongmei Qian
- Department of Architecture and Civil Engineering
- West Anhui University
- Liuan
- P. R. China
| | - Jia Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Yuchuan Li
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Siping Pang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Meng Xu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Jiatao Zhang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing
- P. R. China
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39
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Sathish V, Ramdass A, Velayudham M, Lu KL, Thanasekaran P, Rajagopal S. Development of luminescent sensors based on transition metal complexes for the detection of nitroexplosives. Dalton Trans 2017; 46:16738-16769. [DOI: 10.1039/c7dt02790g] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The detection of nitro explosives by transition metal complexes/metallosupramolecules with their designs and sensing mechanisms are comprehensively reviewed.
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Affiliation(s)
- Veerasamy Sathish
- Department of Chemistry
- Bannari Amman Institute of Technology
- Sathyamangalam – 638 401
- India
| | - Arumugam Ramdass
- Research Department of Chemistry
- Aditanar College of Arts and Science
- Tiruchendur – 628 216
- India
| | | | - Kuang-Lieh Lu
- Institute of Chemistry
- Academia Sinica
- Taipei
- 115 Taiwan
| | | | - Seenivasan Rajagopal
- Department of Physical Chemistry
- Madurai Kamaraj University
- Madurai – 625 021
- India
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40
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Structure-conserving spontaneous transformations between nanoparticles. Nat Commun 2016; 7:13447. [PMID: 27830711 PMCID: PMC5110647 DOI: 10.1038/ncomms13447] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 10/05/2016] [Indexed: 01/26/2023] Open
Abstract
Ambient, structure- and topology-preserving chemical reactions between two archetypal nanoparticles, Ag25(SR)18 and Au25(SR)18, are presented. Despite their geometric robustness and electronic stability, reactions between them in solution produce alloys, AgmAun(SR)18 (m+n=25), keeping their M25(SR)18 composition, structure and topology intact. We demonstrate that a mixture of Ag25(SR)18 and Au25(SR)18 can be transformed to any arbitrary alloy composition, AgmAun(SR)18 (n=1-24), merely by controlling the reactant compositions. We capture one of the earliest events of the process, namely the formation of the dianionic adduct, (Ag25Au25(SR)36)2-, by electrospray ionization mass spectrometry. Molecular docking simulations and density functional theory (DFT) calculations also suggest that metal atom exchanges occur through the formation of an adduct between the two clusters. DFT calculations further confirm that metal atom exchanges are thermodynamically feasible. Such isomorphous transformations between nanoparticles imply that microscopic pieces of matter can be transformed completely to chemically different entities, preserving their structures, at least in the nanometric regime.
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41
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Jin R, Zeng C, Zhou M, Chen Y. Atomically Precise Colloidal Metal Nanoclusters and Nanoparticles: Fundamentals and Opportunities. Chem Rev 2016; 116:10346-413. [DOI: 10.1021/acs.chemrev.5b00703] [Citation(s) in RCA: 1953] [Impact Index Per Article: 244.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Chenjie Zeng
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Meng Zhou
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yuxiang Chen
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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42
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Choline-induced selective fluorescence quenching of acetylcholinesterase conjugated Au@BSA clusters. Biosens Bioelectron 2016; 81:68-74. [PMID: 26921554 DOI: 10.1016/j.bios.2016.02.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/09/2016] [Accepted: 02/16/2016] [Indexed: 11/22/2022]
Abstract
We have developed a highly selective sensitive fluorescent detection of acetylcholine (ACh) using bovine serum albumin (BSA) protected atomically precise clusters of gold. The gold quantum clusters (AuQC@BSA) synthesized using bovine serum albumin and conjugated with acetylcholinesterase (AChE), an enzyme specific for acetylcholine, resulting in AuQC@BSA-AChE. The enzyme, AChE hydrolyzes acetylcholine (ACh) to choline (Ch) which in turn interacts with AuQC@BSA-AChE and quenches its fluorescence, enabling sensing. We have carried out the real time monitoring of the hydrolysis of ACh using electrospray ionization mass spectrometry (ESI MS) to find out the mechanism of fluorescent quenching. The validity of present method for determination of concentration of acetylcholine in real system such as blood was demonstrated. Further, the sensor, AuQC@BSA-AChE can be easily coated on paper and an efficient and cheap sensor can be developed and detection limit for ACh is found to be 10nM. The fluorescent intensity of AuQC@BSA-AChE is sensitive towards acetylcholine in range of 10nM to 6.4µM. This suggests that AuQC@BSA-AChE has an excellent potential to be used for diagnosis of various neuropsychological and neuropsychiatric disorders.
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43
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MOSAEI OSKOEI Y, FATTAHI H, HASSANZADEH J, MOUSAVI AZAR A. Selective Determination of Trinitrotoluene Based on Energy Transfer between Carbon Dots and Gold Nanoparticles. ANAL SCI 2016; 32:193-9. [PMID: 26860565 DOI: 10.2116/analsci.32.193] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yones MOSAEI OSKOEI
- North-West Institute of Science and Technology, Malek Ashtar University of Technology
| | - Hassan FATTAHI
- North-West Institute of Science and Technology, Malek Ashtar University of Technology
| | - Javad HASSANZADEH
- North-West Institute of Science and Technology, Malek Ashtar University of Technology
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44
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Mathew A, Varghese E, Choudhury S, Pal SK, Pradeep T. Efficient red luminescence from organic-soluble Au₂₅ clusters by ligand structure modification. NANOSCALE 2015; 7:14305-14315. [PMID: 26242373 DOI: 10.1039/c5nr03457d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An efficient method to enhance visible luminescence in a visibly non-luminescent organic-soluble 4-(tert butyl)benzyl mercaptan (SBB)-stabilized Au25 cluster has been developed. This method relies mainly on enhancing the surface charge density on the cluster by creating an additional shell of thiolate on the cluster surface, which enhances visible luminescence. The viability of this method has been demonstrated by imparting red luminescence to various ligand-protected quantum clusters (QCs), observable to the naked eye. The bright red luminescent material derived from Au25SBB18 clusters was characterized using UV-vis and luminescence spectroscopy, TEM, SEM/EDS, XPS, TG, ESI and MALDI mass spectrometry, which collectively proposed an uncommon molecular formula of Au29SBB24S, suggested to be due to different stapler motifs protecting the Au25 core. The critical role of temperature on the emergence of luminescence in QCs has been studied. The restoration of the surface ligand shell on the Au25 cluster and subsequent physicochemical modification to the cluster were probed by various mass spectral and spectroscopic techniques. Our results provide fundamental insights into the ligand characteristics determining luminescence in QCs.
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Affiliation(s)
- Ammu Mathew
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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45
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Sun X, Wang Y, Lei Y. Fluorescence based explosive detection: from mechanisms to sensory materials. Chem Soc Rev 2015; 44:8019-61. [PMID: 26335504 DOI: 10.1039/c5cs00496a] [Citation(s) in RCA: 620] [Impact Index Per Article: 68.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The detection of explosives is one of the current pressing concerns in global security. In the past few decades, a large number of emissive sensing materials have been developed for the detection of explosives in vapor, solution, and solid states through fluorescence methods. In recent years, great efforts have been devoted to develop new fluorescent materials with various sensing mechanisms for detecting explosives in order to achieve super-sensitivity, ultra-selectivity, as well as fast response time. This review article starts with a brief introduction on various sensing mechanisms for fluorescence based explosive detection, and then summarizes in an exhaustive and systematic way the state-of-the-art of fluorescent materials for explosive detection with a focus on the research in the recent 5 years. A wide range of fluorescent materials, such as conjugated polymers, small fluorophores, supramolecular systems, bio-inspired materials and aggregation induced emission-active materials, and their sensing performance and sensing mechanism are the centerpiece of this review. Finally, conclusions and future outlook are presented and discussed.
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Affiliation(s)
- Xiangcheng Sun
- Department of Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road, Unit 3222, Storrs, CT 06269, USA.
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46
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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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47
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Subramanian N, Sreemanthula JB, Balaji B, Kanwar JR, Biswas J, Krishnakumar S. A strain-promoted alkyne-azide cycloaddition (SPAAC) reaction of a novel EpCAM aptamer-fluorescent conjugate for imaging of cancer cells. Chem Commun (Camb) 2015; 50:11810-3. [PMID: 25005751 DOI: 10.1039/c4cc02996h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
For the first time, a novel EpCAM aptamer (SYL3C)-DIBO-AF594 fluorescent conjugate was synthesised by bioorthogonal chemistry utilizing a strain promoted alkyne-azide cycloaddition (copper free click) reaction (SPAAC). The ligation efficiency of SPAAC was improved by freeze-thaw cycles. The obtained conjugate showed target specific binding and aided in the imaging of various EpCAM positive cancer cell lines like MCF7, MDAMB453, Weri-RB1 and PC3.
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Affiliation(s)
- Nithya Subramanian
- Department of Nanobiotechnology, Kamalnayan Bajaj Research Institute, Vision Research Foundation, Chennai, India.
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48
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Sandhu S, Kumar R, Singh P, Mahajan A, Kaur M, Kumar S. Ultratrace Detection of Nitroaromatics: Picric Acid Responsive Aggregation/Disaggregation of Self-Assembled p-Terphenylbenzimidazolium-Based Molecular Baskets. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10491-500. [PMID: 25915852 DOI: 10.1021/acsami.5b01970] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
1-(p-Terphenyl)-benzimidazolium (TRIPOD-TP) molecules undergo self-assembly to form rodlike structures in aqueous medium, as shown by field-emission scanning electron microscopy, transmission electron microscopy, and dynamic light scattering studies. Upon gradual addition of picric acid (PA), these aggregates undergo an aggregation/disaggregation process to complex morphological structures (10(-12)-10(-10) M PA) and spherical aggregates (10(-9)-10(-8) M PA). These spherical aggregates undergo further dissolution to well-dispersed spheres between 10(-7)-10(-6) M PA. During fluorescence studies, these aggregates demonstrate superamplified fluorescence quenching (>97%) in the presence of 10(-5) to 0.2 equiv of the probe concentration, an unprecedented process with PA. The lowest detection limits by solution of TRIPOD-TP are 5 × 10(-13) PA, 50 × 10(-12) M 2,4-dinitrophenol, 200 × 10(-12) M 2,4,6-trinitrotoluene, and 1 nM 1-chloro-2,4-dinitrobenzene. Paper strips dipped in the solution of TRIPOD-TP demonstrate quantitative fluorescence quenching between 10(-17) and 10(-6) M PA using front-surface steady state studies and can measure as low as 2.29 × 10(-20) g/cm(2) PA.
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Swamy P CA, Thilagar P. Polyfunctional Lewis Acids: Intriguing Solid-State Structure and Selective Detection and Discrimination of Nitroaromatic Explosives. Chemistry 2015; 21:8874-82. [DOI: 10.1002/chem.201500727] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Indexed: 12/13/2022]
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Jamil AK, Izake EL, Sivanesan A, Fredericks PM. Rapid detection of TNT in aqueous media by selective label free surface enhanced Raman spectroscopy. Talanta 2015; 134:732-738. [DOI: 10.1016/j.talanta.2014.12.022] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 11/25/2014] [Accepted: 12/18/2014] [Indexed: 12/27/2022]
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