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Rana A, Mishra G, Biswas S. Functional Group-Assisted Fluorescence Sensing Platform for Nanomolar-Level Detection of an Antineoplastic Drug and a Neurotransmitter from Environmental Water and Human Biofluids. Inorg Chem 2024; 63:4502-4510. [PMID: 38408375 DOI: 10.1021/acs.inorgchem.3c03341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
A fast, sensitive, selective, and biocompatible dual sensor of an antineoplastic medication (methotrexate) and a neurotransmitter (adrenaline) is still being searched by present-day scientists. To overcome this issue, we have designed a functionalized, robust, bio-friendly luminescent MOF for the sensitive, selective, and rapid monitoring of methotrexate and adrenaline. This probe is the first ever reported MOF-based fluorescence sensor of methotrexate and second only for adrenaline. This fluorescence probe has a very low limit of detection (LOD) of 0.34 and 11.2 nM for adrenaline and methotrexate, respectively. The sensor can detect both the targeted analytes rapidly within 5 s. It can also detect adrenaline and methotrexate from human blood serum and urine accurately and precisely. This reusable sensor is equally efficient in detecting methotrexate from environmental water specimens. Biocompatible, user-friendly, and inexpensive chitosan@MOF@cotton composites were fabricated for the detection of adrenaline and methotrexate from the nanomolar to the micromolar range by the naked eye under a fluorescence lamp. This probe displayed high reproducibility, precision, and accuracy in sensing methotrexate and adrenaline. Fluorescence resonance energy transfer (FRET) and the inner filter effect (IFE) are the possible mechanisms for adrenaline and methotrexate sensing, respectively. The possible mechanism was supported by using required instrumental techniques and theoretical simulations.
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Affiliation(s)
- Abhijeet Rana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Gyanesh Mishra
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Shyam Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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2
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Sathyan B, Banerjee G, Jagtap AA, Verma A, Cyriac J. Deep-Learning-Assisted Discriminative Detection of Vitamin B 12 and Vitamin B 9 by Fluorescent MoSe 2 Quantum Dots. ACS APPLIED BIO MATERIALS 2024; 7:1191-1203. [PMID: 38295366 DOI: 10.1021/acsabm.3c01072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
A facile and environmentally mindful approach for the synthesis of MoSe2 QDs was developed via the hydrothermal method from bulk MoSe2. In this, the exfoliation of MoSe2 was enhanced with the aid of an intercalation agent (KOH), which could reduce the exfoliation time and increase the exfoliation efficiency to form MoSe2 QDs. We found that MoSe2 QDs display blue emission that is suitable for different applications. This fluorescence property of MoSe2 QDs was harnessed to fabricate a dual-modal sensor for the detection of both vitamin B12 (VB12) and vitamin B9 (VB9), employing fluorescence quenching. We performed a detailed study on the fluorescence quenching mechanism of both analytes. The predominant quenching mechanism for VB12 is via Förster resonance energy transfer. In contrast, the recognition of VB9 primarily relies on the inner filter effect. We applied an emerging and captivating approach to pattern recognition, the deep-learning method, which enables machines to "learn" patterns through training, eliminating the need for explicit programming of recognition methods. This attribute endows deep-learning with immense potential in the realm of sensing data analysis. Here, analyzing the array-based sensing data, the deep-learning technique, "convolution neural networks", has achieved 93% accuracy in determining the contribution of VB12 and VB9.
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Affiliation(s)
- Bhasha Sathyan
- Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerala 695 547,India
| | - Gaurav Banerjee
- Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerala 695 547,India
| | - Ajinkya Ashok Jagtap
- Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerala 695 547,India
| | - Abhishek Verma
- Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerala 695 547,India
| | - Jobin Cyriac
- Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram, Kerala 695 547,India
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3
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Yang Z, Xu T, Li H, She M, Chen J, Wang Z, Zhang S, Li J. Zero-Dimensional Carbon Nanomaterials for Fluorescent Sensing and Imaging. Chem Rev 2023; 123:11047-11136. [PMID: 37677071 DOI: 10.1021/acs.chemrev.3c00186] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Advances in nanotechnology and nanomaterials have attracted considerable interest and play key roles in scientific innovations in diverse fields. In particular, increased attention has been focused on carbon-based nanomaterials exhibiting diverse extended structures and unique properties. Among these materials, zero-dimensional structures, including fullerenes, carbon nano-onions, carbon nanodiamonds, and carbon dots, possess excellent bioaffinities and superior fluorescence properties that make these structures suitable for application to environmental and biological sensing, imaging, and therapeutics. This review provides a systematic overview of the classification and structural properties, design principles and preparation methods, and optical properties and sensing applications of zero-dimensional carbon nanomaterials. Recent interesting breakthroughs in the sensitive and selective sensing and imaging of heavy metal pollutants, hazardous substances, and bioactive molecules as well as applications in information encryption, super-resolution and photoacoustic imaging, and phototherapy and nanomedicine delivery are the main focus of this review. Finally, future challenges and prospects of these materials are highlighted and envisaged. This review presents a comprehensive basis and directions for designing, developing, and applying fascinating fluorescent sensors fabricated based on zero-dimensional carbon nanomaterials for specific requirements in numerous research fields.
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Affiliation(s)
- Zheng Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, P. R. China
| | - Tiantian Xu
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, P. R. China
| | - Hui Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, P. R. China
| | - Mengyao She
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
- Ministry of Education Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Provincial Key Laboratory of Biotechnology of Shaanxi, The College of Life Sciences, Northwest University, Xi'an 710069, P. R. China
| | - Jiao Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
- Ministry of Education Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Provincial Key Laboratory of Biotechnology of Shaanxi, The College of Life Sciences, Northwest University, Xi'an 710069, P. R. China
| | - Zhaohui Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Shengyong Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Jianli Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
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4
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Guo Z, Zheng HY, Huang ZY, Liu YZ, Liu YH, Chen Y, Gao J, Hu Y, Huang C. Solvothermal synthesis of bifunctional carbon dots for tartrazine and Fe(III) detection from chamomile residue by ternary DES pretreatment. Food Chem 2023; 426:136604. [PMID: 37348402 DOI: 10.1016/j.foodchem.2023.136604] [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: 03/13/2023] [Revised: 05/28/2023] [Accepted: 06/09/2023] [Indexed: 06/24/2023]
Abstract
A ternary deep eutectic solvent (DES) consisting of choline chloride, lactic acid, and urea in a molar ratio of 1:2:2 was used to pretreat chamomile residue, followed by carbon dots (CDs) preparation using a one-pot solvothermal method. The CDs prepared under the suitable conditions had a high quantum yield of 47.34% and could be used as a bifunctional fluorescent probe for the detection of tartrazine and Fe(III). The concentration of tartrazine or Fe(III) had a good linear relationship with the fluorescence intensity of CDs that the determination coefficient (R2) was 0.9957 and 0.9943, and the limit of detection (LOD) was 40 nM and 119 nM, respectively. After verifying the different fluorescence quenching mechanisms of CDs by these two substances, a quantitative analysis was performed on real samples with recoveries of 90.70%∼104.29%. Overall, this study provided a promising technology for chemical conversion from low-cost chamomile residue to attractive bifunctional fluorescent probe.
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Affiliation(s)
- Zheng Guo
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Han-Yi Zheng
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Zhong-Ying Huang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yue-Zhen Liu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yao-Hua Liu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yun Chen
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Jing Gao
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Yong Hu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
| | - Chao Huang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
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5
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Chaghaghazardi M, Kashanian S, Nazari M, Omidfar K, Joseph Y, Rahimi P. Nitrogen and sulfur co-doped carbon quantum dots fluorescence quenching assay for detection of mercury (II). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122448. [PMID: 36773423 DOI: 10.1016/j.saa.2023.122448] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/29/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Mercury is a highly toxic and potentially bioaccumulative heavy metal ion that can cause severe health problems in humans even at very low concentrations. Thus, the development of a simple, rapid, and sensitive assay for the effective detection of mercury ions at trace levels is of great importance. Here, nitrogen and sulfur co-doped carbon quantum dots (N,S-CQD) were synthesized by a simple hydrothermal treatment of chitosan in the presence of thiourea and citric acid with a quantum yield (QY) up to 33.0 % and used as a selective fluorescent probe to detect mercury ions (Hg2+). The effect of pH, ionic strength, and time on the fluorescence intensity of N,S-CQD were investigated and optimized. The synthesized N,S-CQD showed ultrasensitive ability to detect Hg2+ ions in the water samples, also in the presence of 11 interfering metal ions, with a low detection limit (∼4 nM) over a wide linear range from ∼5-160 nM. The sensing performance of N,S-CQD probe in real sample applications was evaluated by the detection of Hg2+ in lake water samples, which confirmed its potential application in environmental analysis.
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Affiliation(s)
- Mosayeb Chaghaghazardi
- Faculty of Chemistry, Razi University, Kermanshah, Iran; Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Soheila Kashanian
- Faculty of Chemistry, Razi University, Kermanshah, Iran; Nanobiotechnology Department, Faculty of Innovative Science and Technology, Razi University, Kermanshah, Iran.
| | - Maryam Nazari
- Faculty of Chemistry, Razi University, Kermanshah, Iran
| | - Kobra Omidfar
- Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran; Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Yvonne Joseph
- Institute of Electronic and Sensor Materials, Faculty of Materials Science and Materials Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany; Freiberg Center for Water Research, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany
| | - Parvaneh Rahimi
- Institute of Electronic and Sensor Materials, Faculty of Materials Science and Materials Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany; Freiberg Center for Water Research, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany
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6
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Zhang J, Li Q, Liu Z, Zhao L. Rapid and sensitive determination of Piroxicam by N-doped carbon dots prepared by plant soot. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122833. [PMID: 37187150 DOI: 10.1016/j.saa.2023.122833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 04/30/2023] [Accepted: 05/05/2023] [Indexed: 05/17/2023]
Abstract
Piroxicam (PX) as a nonsteroidal anti-inflammatory drug (NSAID) can be effectively used for anti-inflammatory and analgesia. However, overdoses may induce side effects such as gastrointestinal ulcers and headaches. Therefore, the assay of piroxicam has considerable significance. In this work, nitrogen-doped carbon dots (N-CDs) was synthesized for PX detection. The fluorescence sensor was fabricated by hydrothermal method with plant soot and ethylenediamine. The strategy exhibited a detection range of 6-200 μg/mL and 250-700 μg/mL with the limited detection of 2 μg/mL. The mechanism of the PX assay base on the fluorescence sensor was the process of electron transfer between the PX and N-CDs. The assay subsequently demonstrated could be successfully used in actual sample. The results indicated that the N-CDs could be a superior candidate nanomaterial for piroxicam monitoring in the healthcare product industry.
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Affiliation(s)
- Jiayu Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning Province 110016, PR China
| | - Qing Li
- Liaoning Armed Police Corps Hospital, Shenyang, Liaoning Province 110034, PR China
| | - Ziteng Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning Province 110016, PR China
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning Province 110016, PR China.
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Munusamy S, Mandlimath TR, Swetha P, Al-Sehemi AG, Pannipara M, Koppala S, Paramasivam S, Boonyuen S, Pothu R, Boddula R. Nitrogen-doped carbon dots: Recent developments in its fluorescent sensor applications. ENVIRONMENTAL RESEARCH 2023; 231:116046. [PMID: 37150390 DOI: 10.1016/j.envres.2023.116046] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/16/2023] [Accepted: 05/02/2023] [Indexed: 05/09/2023]
Abstract
Doped carbon dots have attracted great attention from researchers across disciplines because of their unique characteristics, such as their low toxicity, physiochemical stability, photostability, and outstanding biocompatibility. Nitrogen is one of the most commonly used elements for doping because of its sizeable atomic radius, strong electronegativity, abundance, and availability of electrons. This distinguishes them from other atoms and allows them to perform distinctive roles in various applications. Here, we have reviewed the most current breakthroughs in nitrogen-doped CDs (N-CDs) for fluorescent sensor applications in the last five years. The first section of the article addresses several synthetic and sustainable ways of making N-CDs. Next, we briefly reviewed the fluorescent features of N-CDs and their sensing mechanism. Furthermore, we have thoroughly reviewed their fluorescent sensor applications as sensors for cations, anions, small molecules, enzymes, antibiotics, pathogens, explosives, and pesticides. Finally, we have discussed the N-CDs' potential future as primary research and how that may be used. We hope that this study will contribute to a better understanding of the principles of N-CDs and the sensory applications that they can serve.
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Affiliation(s)
- Sathishkumar Munusamy
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Angkok, 10330, Pathumwan, Thailand.
| | - Triveni Rajashekhar Mandlimath
- Department of Chemistry, School of Advanced Sciences, VIT-AP University, G-30, Inavolu, Besides AP Secretariat Amaravati, Andhra Pradesh, India
| | - Puchakayala Swetha
- Department of Chemistry, Oakland University, Rochester, MI, 48309, United States
| | | | | | - Sivasankar Koppala
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 602105, Tamil Nadu, India
| | - Shanmugam Paramasivam
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Bangkok, 12120, Pathumthani, Thailand
| | - Supakorn Boonyuen
- Department of Chemistry, Faculty of Science and Technology, Thammasat University, Bangkok, 12120, Pathumthani, Thailand
| | - Ramyakrishna Pothu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Rajender Boddula
- Center for Advanced Materials (CAM), Qatar University Doha, 2713, Qatar.
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8
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Nanomaterials for fluorescent assay of bilirubin. Anal Biochem 2023; 666:115078. [PMID: 36754137 DOI: 10.1016/j.ab.2023.115078] [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: 12/15/2022] [Revised: 01/23/2023] [Accepted: 02/04/2023] [Indexed: 02/10/2023]
Abstract
The accumulation of bilirubin in blood is associated with many diseases. Sensitive and accurate detection of bilirubin is of great significance for personal health care. The rapid development of fluorescent nanomaterials promotes rapid development in the bilirubin assay. In this review, traditional methods for detection of bilirubin are briefly presented to compare with fluorescent nanosensors. Subsequently, the recent progress of different types of fluorescent nanomaterials for determination of bilirubin is summarized. Further, the performance of fluorescent nanosensors and conventional techniques for sensing bilirubin are compared. To this end, the challenges and prospects concerning the topics are discussed. This review will provide some introductory knowledge for researchers to understand the status and importance of fluorescent nanosensors for sensing bilirubin.
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Wu J, Liu Y, Peng L, Liu Q, Wang D, Jing X, Hu Y, Lin J, Fu H, Ji X, Liu J, Lv H, Peng B, Zhang B, Guo L, Wang S. A Plasmonic Fluor-Lightened Microneedle Array Enables Ultrasensitive Multitarget Whole Blood Diagnosis of Anemia in A Paper Origami-Based Device. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300464. [PMID: 36950741 DOI: 10.1002/smll.202300464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/25/2023] [Indexed: 06/18/2023]
Abstract
This work reports a portable, origami-type paper device with a plasmonic fluor-labeled microneedle sensing module for the multiplexed quantification of anemia biomarkers in whole blood. Sequential steps, including serum separation, target enrichment, and multiplexed readout by a gel imager, are rapidly accomplished with the flexible and highly integrated device. The microneedle array enabled efficient sampling of trace targets from ng mL-1 to pg mL-1 level. Combined with the plasmonic fluor label, the signal is improved by ≈7.6 folds compared with the flat substrate-based assay. The device is applied to simultaneously quantify hemoglobin (Hb), ferritin, folic acid (FA), and vitamin B12 (VB12 ), which are four anemia biomarkers distributed in different environments with different concentration ranges. Featured by the small sample volume (150 µL), short assay time (20 min), low cost (2 $), robust stability, and user-friendliness, the device is promising for the rapid and accurate diagnosis of anemia in real practice.
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Affiliation(s)
- Jing Wu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Yong Liu
- School of Science, Hainan University, Haikou, 570228, China
| | - Lijun Peng
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Qisijing Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Dawei Wang
- Department of Nuclear Medicine, the Sixth Medical Center of People's Liberation Army General Hospital, Beijing, 100853, China
| | - Xu Jing
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, Shanxi, 030801, China
| | - Yaozhong Hu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Jing Lin
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Hanyue Fu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Xuemeng Ji
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Jingmin Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Huan Lv
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Bo Peng
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Bowei Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Liqiong Guo
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin, 300072, China
- Tianjin Fourth Central Hospital, Tianjin, 300142, China
- Wenzhou Safety (Emergency) Institute, Tianjin University, Wenzhou, 325000, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China
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Li J, Yang Y, Liu P. Hybrid Micelles of Carbon Quantum Dot-Doxorubicin Conjugates as Nanotheranostics for Tumor Therapy and Turn-On Fluorescence Imaging: Impact of Conjugated Structures and On-Off-On Mechanism. Mol Pharm 2023; 20:1426-1434. [PMID: 36688530 DOI: 10.1021/acs.molpharmaceut.2c01074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Carbon quantum dots (CDs) have attracted more and more attention in the field of biological imaging, while their applications are restricted due to their nonspecific fluorescence and small particle size. Herein, two pH-responsive carbon quantum dot-doxorubicin (DOX) conjugates were designed with maleic acid (MA, cis-butenedioic acid) and fumaric acid (FA, trans-butenedioic acid) as linker, respectively, which could self-assemble into unique hybrid micelles as tumor-specific carrier-free nanotheranostics. Owing to the acid-labile covalent modification with conjugated groups and the interaction with the surrounding DOX molecules, the fluorescence of CDs was completely quenched, while it could be recovered in the tumor intracellular microenvironment by acid-triggered cleavage of the fluorophore-drug conjugates, showing excellent turn-on fluorescence for effective cellular imaging. Especially, the trans conjugate with FA as linker possessed higher drug content, better drug release behavior and stronger inhibition of tumor cells than the cis one with MA as linker, demonstrating its promising potential as carrier-free nanotheranostics for future tumor treatment.
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Affiliation(s)
- Jie Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yubin Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Peng Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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Yang Z, Xu T, Zhang S, Li H, Ji Y, Jia X, Li J. Multifunctional N,S-doped and methionine functionalized carbon dots for on-off-on Fe 3+ and ascorbic acid sensing, cell imaging, and fluorescent ink applying. NANO RESEARCH 2022; 16:5401-5411. [PMID: 36405981 PMCID: PMC9643953 DOI: 10.1007/s12274-022-5107-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/19/2022] [Accepted: 09/26/2022] [Indexed: 05/25/2023]
Abstract
Fluorescent carbon dots (CDs) have been identified as potential nanosensors and attracted tremendous research interests in wide areas including anti-counterfeiting, environmental and biological sensing and imaging in considering of the attractive optical properties. In this work, we present a CDs based fluorescent sensor from polyvinylpyrrolidone, citric acid, and methionine as precursors by hydrothermal approach. The selective quantifying of Fe3+ and ascorbic acid (AA) are based on the fluorescent on-off-on process, in which the fluorescent quenching is induced by the coordination of the Fe3+ on the surface of the CDs, while the fluorescence recovery is mainly attributed to redox reaction between Fe3+ and AA, breaking the coordination and bringing the fluorescence back. Inspired by the good water solubility and biocompatibility, significant photostability, superior photobleaching resistance as well as high selectivity, sensitivity, and interference immunity, which are constructed mainly from the N,S-doping and methionine surface functionalization, the CDs have not only been employed as fluorescence ink in multiple anti-counterfeiting printing and confidential document writing or transmitting, but also been developed as promising fluorescence sensors in solution and solid by CDs doped test strips and hydrogels for effectively monitoring and removing of Fe3+ and AA in environmental aqueous solution. The CDs have been also implemented as effective diagnostic candidates for imaging and tracking of Fe3+ and AA in living cells, accelerating the understanding of their function and importance in related biological processes for the prevention and treatment specific diseases. Electronic Supplementary Material Supplementary material (fluorescence spectra: UV and Xe irradiation, TG, thermo stability, ionic strength, relationship between fluorescence responses at different concentrations of Fe3+ and AA, reaction time-dependent fluorescent responses; XPS spectra of CDs + Fe3+ and Fe3+@CDs + AA; structural characterization; equations about fluorescence lifetime, quantum yield and LOD; comparison of the CDs for the detection of Fe3+ and AA with reported methods; detection of Fe3+ and AA in real samples; absorption of Fe3+ in environmental samples and MTT assay results) is available in the online version of this article at 10.1007/s12274-022-5107-7.
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Affiliation(s)
- Zheng Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127 China
- College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, 710054 China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources, Xi’an, 710012 China
| | - Tiantian Xu
- College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, 710054 China
| | - Shaobing Zhang
- College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, 710054 China
| | - Hui Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127 China
- College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, 710054 China
| | - Yali Ji
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127 China
| | - Xiaodan Jia
- College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, 710054 China
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources, Xi’an, 710012 China
| | - Jianli Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127 China
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12
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Qi S, He X, Zhang S, Xu P, Su M, Dong B, Song B. Turn-off near-infrared fluorescent probe for free bilirubin detection constructed by enhanced excimer emission. Anal Chim Acta 2022; 1238:340657. [DOI: 10.1016/j.aca.2022.340657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/19/2022] [Accepted: 11/21/2022] [Indexed: 11/23/2022]
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13
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Qi H, Zhai Z, Dong X, Zhang P. Nitrogen doped carbon quantum dots (N-CQDs) with high luminescence for sensitive and selective detection of hypochlorite ions by fluorescence quenching. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121456. [PMID: 35687990 DOI: 10.1016/j.saa.2022.121456] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/28/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
A highly luminescent nitrogen-doped carbon quantum dots (N-CQDs) with a quantum yield of 44% was prepared by a facile hydrothermal synthesis method using citric acid (CA) and ethylenediamine (EDA) with a molar ratio of 1:1 at 200 °C for 5 h. The hypochlorite (ClO-) ions significantly quench the fluorescence of the N-CQDs according to a pseudo-second-order kinetic model. A sensitive and selective quantification method with an excellent linearity in the range of 1.0-10.0 μM was developed to detect ClO- ions based on the fluorescence quenching. The limit of detection (LOD) of 0.43 μM and the limit of quantification (LOQ) of 1.04 μM were achieved, respectively. This approach was successfully applied to detect the residual ClO- ions in local tap water and in swimming pool water. In addition, the developed fluorescence quenching method was also successfully applied in anti-counterfeiting and paper encryption. Both of the applications in real world suggest that the as-prepared N-CQDs is a kind of promising fluorescence probe for rapid detecting ClO- ions in environment fields, and has potential applications in text secrecy fields.
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Affiliation(s)
- Hongxia Qi
- College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zizhuo Zhai
- College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xipeng Dong
- College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Pudun Zhang
- College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China; Analysis and Test Center, Beijing University of Chemical Technology, Beijing 100029, China.
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14
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Highly sensitive and selective detection of free bilirubin using blue emitting graphene quantum dots (GQDs). J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02079-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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15
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Fluorescence sensing platform for sarcosine analysis based on nitrogen-doping copper nanosheets and gold nanoclusters. Anal Chim Acta 2022; 1223:340188. [DOI: 10.1016/j.aca.2022.340188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/17/2022] [Accepted: 07/18/2022] [Indexed: 11/22/2022]
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16
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Wang M, Liu M, Nong S, Song W, Zhang X, Shen S, Jian G, Chen X, Li Z, Xu L. Highly Luminescent Nucleoside-Based N, P-Doped Carbon Dots for Sensitive Detection of Ions and Bioimaging. Front Chem 2022; 10:906806. [PMID: 35747344 PMCID: PMC9210210 DOI: 10.3389/fchem.2022.906806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 04/28/2022] [Indexed: 12/28/2022] Open
Abstract
The efficient detection of Fe3+ and MnO4− in a water environment is very important and challenging due to their harmful effects on the health of humanity and environmental systems. Good biocompatibility, sensitivity, selectivity, and superior photophysical properties were important attributes of carbon dot-based CDs sensors for sensing applications. In this work, we synthesized N, P-co-doped carbon dots (N/P CDs) with guanosine 5′-monophosphate (GMP) as a green carbon source, with high fluorescence quantum yield in water (QY, 53.72%). First, the luminescent N/P CDs showed a three-state “on-off-on” fluorescence response upon the sequential addition of Fe3+ and F−, with a low detection limit of 12 nM for Fe3+ and 8.5 nM for F−, respectively. Second, the N/P CDs also exhibited desirable selectivity and sensitivity for toxic MnO4− detection with the limit of detection of 18.2 nM, through a turn-off mechanism. Moreover, the luminescent N/P CDs successfully monitored the aforementioned ions in environmental water samples and in Escherichia coli.
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Affiliation(s)
- Mengru Wang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Mengling Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Shuli Nong
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Wenzhu Song
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Xianpeng Zhang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Shuang Shen
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Guohong Jian
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Xiangyao Chen
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Zhanchao Li
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
- *Correspondence: Li Xu, ; Zhanchao Li ,
| | - Li Xu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
- Guangdong Pharmaceutical University−University of Hong Kong Joint Biomedical Innovation Platform, Zhongshan, China
- *Correspondence: Li Xu, ; Zhanchao Li ,
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17
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Han B, Hu X, Zhang X, Huang X, An M, Chen X, Zhao D, Li J. The fluorescence mechanism of carbon dots based on the separation and identification of small molecular fluorophores. RSC Adv 2022; 12:11640-11648. [PMID: 35432945 PMCID: PMC9008442 DOI: 10.1039/d2ra00431c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/31/2022] [Indexed: 01/18/2023] Open
Abstract
Carbon dots (CDs) have attracted much attention in theoretical researches and their practical applications due to their excellent optical properties, and many researchers discovered that flurophores play a very important role in synthesis process of CDs and the luminescence of prepared CDs. In this study, two CDs were pyrolysis with citric acid, N-acetyl-l-cysteine and glutathione derivatives as carbon sources. Four intermediate small molecules were separated from the prepared CDs through ultrafiltration and chromatography, and their chemical structures were determined. The formation process of CDs was monitored through identified small molecule intermediates and HPLC. It is speculated that the two CDs have the same formation pathway, including TPA (5-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyridine-3,7-dicarboxylic acid) synthesis, fluorophore polymerization, carbon chain extension, and carbonization. It was also discovered that these two CDs have the same fluorescence properties, thiazolopyridone structure, and nitrogen-sulfur co-doped functional groups are important reasons for the mixed excitation dependence of CDs. This study would provide valuable theoretical basis for the studies on preparation of excellent CDs, raw material selection, and CDs formation mechanism.
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Affiliation(s)
- Bingchen Han
- School of Pharmaceutical Sciences, South-Central Minzu University Wuhan China
| | - Xin Hu
- School of Pharmaceutical Sciences, South-Central Minzu University Wuhan China
| | - Xinfeng Zhang
- School of Pharmaceutical Sciences, South-Central Minzu University Wuhan China
| | - Xianju Huang
- School of Pharmaceutical Sciences, South-Central Minzu University Wuhan China
| | - Mingzhe An
- Key Laboratory of Wuliangye-flavor Liquor Solid-state Fermentation, Wuliangye Yibin Co. 3Ltd Yibin China
| | - Xiao Chen
- Hubei Yaosheng Traditional Chinese Medicine Technology Co. Ltd Zhaoyang China
| | - Dan Zhao
- School of Pharmaceutical Sciences, South-Central Minzu University Wuhan China
| | - Jun Li
- School of Pharmaceutical Sciences, South-Central Minzu University Wuhan China
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18
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Li N, Hu C, Zhang W, Ma R, Zhang L, Qiao J. Nitrogen-Doped Carbon Dots as a Fluorescent Probe for the Highly Sensitive Detection of Bilirubin and Cell Imaging. LUMINESCENCE 2022; 37:913-921. [PMID: 35322522 DOI: 10.1002/bio.4236] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 11/06/2022]
Abstract
Nitrogen-doped carbon dots (NCDs) with bright blue fluorescence were constructed by a hydrothermal method using sucrose and L-proline as raw materials. The NCDs were characterized by transmitted electron microscopy, X-ray diffractometry, Fourier transform infrared spectrometry, X-ray photoelectron spectroscopy, and ultraviolet-visible absorption (UV-vis) and fluorescence spectroscopy to investigate the morphology, elemental composition, and optical properties. The NCDs had good water solubility, high dispersibility with an average diameter of only 1.7 nm, and satisfactory optical properties with a fluorescence quantum yield of 23.4%. The NCDs were employed for the detection of bilirubin. A good linear response of the NCDs in the range 0.35-9.78 μM was obtained for bilirubin with a detection limit of 33 nM. The NCDs were also applied to the analysis of real samples, serum and urine, with a recovery of 95.34%-104.66%. The low cytotoxicity and good biocompatibility of the NCDs were indicated by an MTT assay and cell imaging of HeLa cells. Compared with other detection systems, using NCDs for bilirubin detection was a facile and efficient method with good selectivity and sensitivity.
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Affiliation(s)
- Ningbo Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China.,Department of Chemistry, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China
| | - Chuqian Hu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China
| | - Wenkun Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China
| | - Rong Ma
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China
| | - Liting Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China
| | - Jie Qiao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China.,Department of Chemistry, School of Basic Medical Science, Shanxi Medical University, Taiyuan, China
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19
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Han Y, Wang Y, Liu X, Chen J, Qiu H. Green- and Red-Emitting Fluorescent Silicon Nanoparticles: Synthesis, Mechanism, and Acid Phosphatase Sensing. ACS APPLIED BIO MATERIALS 2022; 5:295-304. [PMID: 35014839 DOI: 10.1021/acsabm.1c01086] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Until now, the green and facile synthesis of multicolor fluorescent silicon nanoparticles (SiNPs) with favorable biocompatibility for cellular imaging and biosensors is still a challenge. Herein, a facile one-step room temperature method for preparing fluorescent SiNPs displayed different emission wavelengths was reported. Green and red fluorescent SiNPs (G-SiNPs and R-SiNPs) were synthesized by adjusting the concentration of the reducing agent 2,4-diaminophenol hydrochloride when the amount of N-[3-(trimethoxysilyl)-propyl]-ethylenediamine was consistent. Characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy, the results revealed that the G-SiNPs and R-SiNPs were assembled by polymerization of different building blocks, and the emission characteristics of these SiNPs were attributed to the difference in their structural composition and particle size. Interestingly, these fluorescent SiNPs exhibited excellent water solubility, salt tolerance, pH stability, photobleaching resistance, and low cytotoxicity, which facilitated multicolor cell imaging, and further led to these SiNPs were highly attractive in a variety of applications, such as multi-channel sensing and biological imaging. Furthermore, the R-SiNPs have shown the potential to detect acid phosphatase, which is a biomarker of prostate cancer.
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Affiliation(s)
- Yangxia Han
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yuxiang Wang
- Key Laboratory of Sensor and Sensing Technology of Gansu Province, Gansu Academy of Sciences, Lanzhou 730000, China
| | - Xingchen Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.,School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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20
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Nandi N, Gaurav S, Sarkar P, Kumar S, Sahu K. Hit Multiple Targets with One Arrow: Pb 2+ and ClO - Detection by Edge Functionalized Graphene Quantum Dots and Their Applications in Living Cells. ACS APPLIED BIO MATERIALS 2021; 4:7605-7614. [PMID: 35006709 DOI: 10.1021/acsabm.1c00867] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recently, multimodal detection of analytes through a single nanoprobe has become an eminent approach for researchers. Herein a fluorescent nanoprobe, functionalized-GQD (F-GQD), has been designed through edge functionalization of graphene quantum dots (GQDs) by 2,6-diaminopyridine molecules. The fluorescence of F-GQD is quite sensitive to medium pH, making it a suitable pH sensor within the pH range 2-6. Interestingly, F-GQD shows dual sensing of Pb2+ and ClO- by entirely different pathways; Pb2+ exhibits fluorescence turn-on performance while ClO- triggers turn-off fluorescence quenching. The fluorescence enhancement may originate from the Pb2+-induced aggregation of the nanodots. The limit of detection (LOD) was also impressive, 1.2 μM and 12.6 nM for Pb2+ and ClO-, respectively. The detailed mechanistic investigations reveal that both dynamic and static quenching effects operate together in the F-GQD-ClO- system. The dynamic quenching was attributed to the energy migration from F-GQD to ClO- through hydrogen bonding interaction (static quenching) between the amine group at the F-GQD surface and ClO-. The F-GQD nanodot reveals excellent sensitivity toward the detection of ClO- in real samples. Moreover, the F-GQDs also serve as multicolor fluorescent probes for cell imaging; the probe can easily penetrate the cell membrane and successfully detect intracellular ClO-.
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Affiliation(s)
- Nilanjana Nandi
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Shubham Gaurav
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, 781039 Guwahati, Assam, India
| | - Priyanka Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Sachin Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, 781039 Guwahati, Assam, India
| | - Kalyanasis Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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