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Palanivel M, Nataraj D, Thrupthika T, Ramya S, Premkumar S, Thangadurai TD. Nonclassical Pathways: Accelerated Crystal Growth of Sodium Hexafluorosilicate Microrods via Nanoparticle-Assisted Processes with 0D Silicon Quantum Dots. ACS OMEGA 2024; 9:24060-24070. [PMID: 38854570 PMCID: PMC11154940 DOI: 10.1021/acsomega.4c02952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/19/2024] [Accepted: 04/24/2024] [Indexed: 06/11/2024]
Abstract
Nonclassical crystallization represents an innovative pathway that utilizes nanoparticles, enabling the generation of single crystals, going beyond a classical mechanism dependent on atoms, ions, or molecules. Our investigation has revealed hierarchical structures emerging via the aggregation and fusion of primary silicon quantum dots (SiQDs). In contrast to the classical ion-by-ion crystallization process, the primary SiQDs initially undergo aggregation, followed by fusion and their subsequent crystallization, leading to the ultrafast crystal growth of sodium hexafluorosilicate (SHFS) microrods with diverse morphologies. A comprehensive fluorescence microscopy study is performed to examine the mechanism of microrod formation through the primary aggregation and fusion of SiQDs at room temperature in the presence of hydrogen fluoride (HF). The different concentrations of HF play a crucial role in the formation of flower-, block-, and hexagonal-shaped SHFS microrods. However, the presence of a high-concentration HF causes a reduction in microrod size, elucidated through a range of analytical and spectroscopic techniques.
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Affiliation(s)
- Maheswari Palanivel
- Quantum
Materials & Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - Devaraj Nataraj
- Quantum
Materials & Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
- UGC−CPEPA
Centre for Advanced Studies in Physics for the Development of Solar
Energy Materials and Devices, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - Thankappan Thrupthika
- Quantum
Materials & Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - Subramaniam Ramya
- Quantum
Materials & Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - Sellan Premkumar
- Joint
International Research Laboratory of Information Display and Visualization,
School of Electronics Science and Technology, Southeast University, Nanjing 210009, China
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Mondal A, Pandit S, Sahoo J, Subramaniam Y, De M. Post-functionalization of sulfur quantum dots and their aggregation-dependent antibacterial activity. NANOSCALE 2023; 15:18624-18638. [PMID: 37975185 DOI: 10.1039/d3nr04287a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Sulfur quantum dots (SQDs) have emerged as an intriguing class of luminescent nanomaterial due to their exceptional physiochemical and optoelectronic properties. However, their biomedical application is still in its infancy due to the limited scope of their surface functionalization. Herein, we explored the surface functionalization of SQDs through different thiol ligands with tuneable functionality and tested their antibacterial efficacy. Notably, very high antibacterial activity of functionalized SQDs (10-25 ng ml-1) was noted, which is 105 times higher compared to that of nonfunctionalized SQDs. Moreover, a rare phenomenon of the reverse trend of antibacterial activity through surface modification was observed, with increasing surface hydrophobicity of various nanomaterials as the antibacterial activity increased. However, we also noted that as the surface hydrophobicity increased, the SQDs tended to exhibit a propensity for aggregation, which consequently decreased their antibacterial efficacy. This identical pattern was also evident in in vivo assessments. Overall, this study illuminates the importance of surface modifications of SQDs and the role of surface hydrophobicity in the development of antibacterial agents.
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Affiliation(s)
- Avijit Mondal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
| | - Subrata Pandit
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
| | - Jagabandhu Sahoo
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
| | | | - Mrinmoy De
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
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3
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Li Y, Chen Q, Pan X, Lu W, Zhang J. New insight into the application of fluorescence platforms in tumor diagnosis: From chemical basis to clinical application. Med Res Rev 2022; 43:570-613. [PMID: 36420715 DOI: 10.1002/med.21932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 09/22/2022] [Accepted: 11/04/2022] [Indexed: 11/27/2022]
Abstract
Early and rapid diagnosis of tumors is essential for clinical treatment or management. In contrast to conventional means, bioimaging has the potential to accurately locate and diagnose tumors at an early stage. Fluorescent probe has been developed as an ideal tool to visualize tumor sites and to detect biological molecules which provides a requirement for noninvasive, real-time, precise, and specific visualization of structures and complex biochemical processes in vivo. Rencently, the development of synthetic organic chemistry and new materials have facilitated the development of near-infrared small molecular sensing platforms and nanoimaging platforms. This provides a competitive tool for various fields of bioimaging such as biological structure and function imaging, disease diagnosis, in situ at the in vivo level, and real-time dynamic imaging. This review systematically focused on the recent progress of small molecular near-infrared fluorescent probes and nano-fluorescent probes as new biomedical imaging tools in the past 3-5 years, and it covers the application of tumor biomarker sensing, tumor microenvironment imaging, and tumor vascular imaging, intraoperative guidance and as an integrated platform for diagnosis, aiming to provide guidance for researchers to design and develop future biomedical diagnostic tools.
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Affiliation(s)
- Yanchen Li
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
| | - Qinhua Chen
- Department of Pharmacy Shenzhen Baoan Authentic TCM Therapy Hospital Shenzhen China
| | - Xiaoyan Pan
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
| | - Wen Lu
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
| | - Jie Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Health Science Center Xi'an Jiaotong University Xi'an China
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Wu HF, Kailasa SK. Recent advances in nanomaterials-based optical sensors for detection of various biomarkers (inorganic species, organic and biomolecules). LUMINESCENCE 2022. [PMID: 35929140 DOI: 10.1002/bio.4353] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/11/2022] [Accepted: 07/27/2022] [Indexed: 11/07/2022]
Abstract
This review briefly emphasizes the different detection approaches (electrochemical sensors, chemiluminescence, surface-enhanced Raman scattering), functional nanostructure materials (quantum dots, metal nanoparticles, metal nanoclusters, magnetic nanomaterials, metal oxide nanoparticles, polymer-based nanomaterials, and carbonaceous nanomaterials) and detection mechanisms. Further, this review emphasis on the integration of functional nanomaterials with optical spectroscopic techniques for the identification of various biomarkers (nucleic acids, glucose, uric acid, oxytocin, dopamine, ascorbic acid, bilirubin, spermine, serotonin, thiocyanate, Pb2+ , Cu2+ , Hg2+ , F- , peptides, and cancer biomarkers (mucin 1, prostate specific antigen, carcinoembryonic antigen, CA15-3, human epidermal growth factor receptor 2, C-reactive protein, and interleukin-6). Analytical characteristics of nanomaterials-based optical sensors are summarized in Tables, providing the insights of nanomaterials-based optical sensors for biomarkers detection. Finally, the opportunities and challenges of nanomaterials-based optical analytical approaches for the detection of various biomarkers (inorganic, organic, biomolecules, peptides and proteins) are discussed.
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Affiliation(s)
- Hui-Fen Wu
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, Taiwan
- International PhD Program for Science, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
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Photochromism of dye containing Schiff base-metal complex: A revisit through spectro-kinetic, thermodynamic and theoretical analyses for the design of a molecular logic gate. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113505] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Iman K, Ahamad MN, Monika, Ansari A, Saleh HAM, Khan MS, Ahmad M, Haque RA, Shahid M. How to identify a smoker: a salient crystallographic approach to detect thiocyanate content. RSC Adv 2021; 11:16881-16891. [PMID: 35479719 PMCID: PMC9032361 DOI: 10.1039/d1ra01749g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/07/2021] [Indexed: 11/21/2022] Open
Abstract
There is an increasing demand for monitoring environmental pollutants and the control requires new sensing materials with better sensitivity, selectivity and reliability. In this study, a series of Co7 clusters incorporating various flexible polyhydroxyamine ligands are explored, with the first report of thiocyanate recognition triggered by crystal formation using a Co7 crystal (1). For this, we have fortunately synthesized three new mixed metal Co7 clusters with fascinating structural features. The clusters were characterized by spectroscopic and single crystal X-ray diffraction methods and later by DFT calculations. Due to its better emission spectrum, 1 was further utilized for evaluating its sensing ability towards various anions in water. Surprisingly, 1 shows better quenching ability towards the recognition of SCN− with a better binding constant. The luminescence quenching towards SCN− detection was further verified by the single crystal method, HSAB principle (symbiosis) and theoretical calculations such as DFT studies. The SCXRD data clearly suggest that the Co7 (1) can be converted into Co14 (1a) by direct reaction with NaSCN under ambient conditions. Besides the soft/hard acid–base concept (symbiosis), the energies of formation, and Co–NCS and Co–OH2 bond energies (as unravelled by DFT) are responsible for this transformation. Therefore, 1 can be used as a selective and sensitive sensor for the detection of thiocyanate anions based on the fluorescence amplification and quenching method. Further, the designed cluster has also been utilized to detect anions in human blood samples to differentiate a smoker and a non-smoker. It has been concluded that the samples of smokers have a high degree of thiocyanate (∼12 or 9.5 mg L−1) in comparison to those of non-smokers (2–3 mg L−1). Thus, this kind of cluster material has high potentiality in the field of bio-medical science in future endeavours for identification of the extent of thiocyanate content in smokers. A new Co based sensor for thiocyanate recognition by formation of the dimeric crystals is designed to distinguish a smoker from a non-smoker.![]()
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Affiliation(s)
- Khushboo Iman
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University Aligarh 202002 India
| | - M Naqi Ahamad
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University Aligarh 202002 India
| | - Monika
- Department of Chemistry, Central University of Haryana Mahendergarh 123031 Haryana India
| | - Azaj Ansari
- Department of Chemistry, Central University of Haryana Mahendergarh 123031 Haryana India
| | - Hatem A M Saleh
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University Aligarh 202002 India
| | - M Shahnawaz Khan
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University Aligarh 202002 India
| | - Musheer Ahmad
- Department of Applied Chemistry (ZHCET), Aligarh Muslim University Aligarh 202002 India
| | - Rosenani A Haque
- School of Chemical Sciences, Universiti Sains Malaysia, USM 11800 Penang Malaysia
| | - M Shahid
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University Aligarh 202002 India
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Ganesan M, Nagaraaj P. Quantum dots as nanosensors for detection of toxics: a literature review. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4254-4275. [PMID: 32940270 DOI: 10.1039/d0ay01293a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Great advances have been made in sensor-based methods for chemical analysis owing to their high sensitivity, selectivity, less testing time, and minimal usage of chemical reagents. Quantum Dots (QDs) having excellent optical properties have been thoroughly explored for variety of scientific applications wherein light plays an important role. In recent years, there have been an increasing number of publications on the applications of QDs as photoluminescent nanosensors for the detection of chemicals and biomolecules. However, there has been hardly any publication describing the use of QDs in the detection of various toxic chemicals at one place. Hence, a literature survey has been made on the applications of QDs as chemosensors for the detection of gaseous, anionic, phenolic, metallic, drug-overdose, and pesticide poison so as to open a new perspective towards the role of sensors in analytical toxicology. In this review, the QD-based analysis of biospecimens for poison detection in clinical and forensic toxicology laboratories is highlighted.
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Affiliation(s)
- Muthupandian Ganesan
- Toxicology Division, Regional Forensic Science Laboratory, Forensic Sciences Department, Forensic House, Chennai-4, India.
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Zhang J, Liu J, Wang M, Su X. Determination of ascorbic acid and ascorbate oxidase based on quaternary CuInZnS QDs/thiochrome ratiometric fluorescence sensing system. Talanta 2020; 214:120814. [DOI: 10.1016/j.talanta.2020.120814] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 12/30/2019] [Accepted: 02/07/2020] [Indexed: 10/25/2022]
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Polyaniline as an On−Off−On bright green fluorescent probe: Solvent directed synthesis, characterization and recognition of chromium through the inner filter effect. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122292] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Zatsepin AF, Kuznetsova YA, Wong CH. Creation of Si quantum dots in a silica matrix due to conversion of radiation defects under pulsed ion-beam exposure. Phys Chem Chem Phys 2019; 21:25467-25473. [PMID: 31714553 DOI: 10.1039/c9cp04715h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this work we present an innovative method of creating Si quantum dots under pulsed ion-beam exposure. The evolution of defect structure ODC(II) → E'→ ODC(I) → Si QDs in glassy SiO2 under ion-beam implantation was established by optical absorption and photoluminescence spectroscopies. Depending on the mode of ion exposure, it is possible to easily control the type and concentration of defects in the host and modify its optical properties for novel applications. Ab initio calculations confirm that bond softening in SiO2 is attainable via the use of Gd ion implantation. According to our experimental and theoretical results, the three-stage interaction of primary oxygen-deficient centers leads to the formation of stable silicon quantum dots with a size of 3.6 nm and luminescence at 1.8 eV excited by incoherent light.
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Affiliation(s)
- A F Zatsepin
- Photonics and VUV-Spectroscopy Lab, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russia.
| | - Yu A Kuznetsova
- Photonics and VUV-Spectroscopy Lab, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russia.
| | - C H Wong
- Photonics and VUV-Spectroscopy Lab, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russia.
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Roy D, Fouzder C, Mukhuty A, Pal S, Mondal MK, Kundu R, Chowdhury P. Designed Synthesis of Dual Emitting Silicon Quantum Dot for Cell Imaging: Direct Labeling of Alpha 2-HS-Glycoprotein. Bioconjug Chem 2019; 30:1575-1583. [PMID: 31009567 DOI: 10.1021/acs.bioconjchem.9b00279] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The innocent silicon quantum dots (SQDs) having dual emissive property (blue in VIS and red in NIR), high photostability, and freedom from auto fluorescence are designed and synthesized for the first time using ethylene glycol. A new attempt has been made for direct labeling of Alpha 2-HS-Glycoprotein (Fetuin A) through functionalization of the synthesized dots by EDC coupling. The SQDs were characterized by FTIR, TEM, AFM, XRD, EDX, DLS, and TGA. The chemistry involved in the synthesis and functionalization of dots is elucidated in detail. The synthesized SQDs are suitable for live cell imaging as well as direct labeling of the Fetuin A in the NIR region. The direct labeling technique developed for Fetuin A imaging is robust, more specific, and simple, and reduces the number of incubation and washing steps and produces better quality data compared to the conventional method using Rhodamine B.
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Synthesis of water-soluble conjugated polymer, poly(N-3-sulfopropylaniline) and the study of its glucose sensing property. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-018-1691-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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