1
|
Zhang Y, Wang C, Wei G, Wang X, Liu W, Yang G, Zhang P, Li Q, Geng X, Chen L, Song Z. Facile fluorescence detection of malachite green in fish using molecularly imprinted polymers doped CdTe quantum dots based system. Food Chem 2024; 442:138458. [PMID: 38278103 DOI: 10.1016/j.foodchem.2024.138458] [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] [Received: 09/13/2023] [Revised: 01/14/2024] [Accepted: 01/14/2024] [Indexed: 01/28/2024]
Abstract
Malachite green (MG) possesses high toxicity, therefore, the detection of MG in fish tissues is of vital importance. A novel core-shell MIPs doped CdTe quantum dots coated silica nanoparticles (CdTe-MIP/SiO2 NPs) were synthesized via a simple one-pot strategy. The materials were characterized carefully. The resulting CdTe-MIP/SiO2 NPs were coated on the thin layer chromatography plate, and coupled with miniaturized fluorimeter for fluorescence detection of MG in fish samples. The resulting CdTe-MIP/SiO2 NPs based system possessed good linearity (0.01 ∼ 20 μmol/L), high recoveries (98.36 %∼101.45 %) and low detection limit (3.7 nmol/L) for MG. Furthermore, CdTe-MIP/SiO2 NPs based system were employed to measure fish samples spiked with MG, meanwhile, HPLC was utilized to evaluate the accuracy and reliability. And the paired t-test was conducted to evaluate differences between fluorescence method and HPLC, P > 0.05 means no significant difference was observed, the results demonstrated that both fluorescence method and HPLC are suitable for MG analysis.
Collapse
Affiliation(s)
- Yimeng Zhang
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, PR China
| | - Chuanliang Wang
- Department of Instrumentation & Analytical Chemistry, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Key Laboratory of Deep-sea Composition Detection Technology of Liaoning Province, Dalian Institute of Chemical Physics, CAS, 457 Zhongshan Road, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guo Wei
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, PR China
| | - Xuesong Wang
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, PR China
| | - Wanhui Liu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, PR China
| | - Gangqiang Yang
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, PR China
| | - Peng Zhang
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, PR China
| | - Qinglian Li
- Department of Instrumentation & Analytical Chemistry, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Key Laboratory of Deep-sea Composition Detection Technology of Liaoning Province, Dalian Institute of Chemical Physics, CAS, 457 Zhongshan Road, Dalian 116023, China
| | - Xuhui Geng
- Department of Instrumentation & Analytical Chemistry, CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Key Laboratory of Deep-sea Composition Detection Technology of Liaoning Province, Dalian Institute of Chemical Physics, CAS, 457 Zhongshan Road, Dalian 116023, China.
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Shandong Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Zhihua Song
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, PR China.
| |
Collapse
|
2
|
Narimani S, Samadi N, Delnavaz E. Highly sensitive and novel dual-emission fluorescence nanosensor utilizing hybrid carbon dots-quantum dots for ratiometric determination of chlorpromazine. ANAL SCI 2024:10.1007/s44211-024-00591-x. [PMID: 38740714 DOI: 10.1007/s44211-024-00591-x] [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: 02/28/2024] [Accepted: 04/24/2024] [Indexed: 05/16/2024]
Abstract
Herein, a ratiometric fluorimetric nanosensor is introduced for the sensitive and selective analysis of chlorpromazine (CPZ) via employing blue-emitting B-doped carbon dots (B-CDs) as the reference fluorophore and green-emitting CdTe capped thioglycolic acid (TGA) quantum dots (TGA-CdTe-QDs) as the specific recognition probe. The sensor exhibits dual emission centered at 440 and 560 nm, under a single excitation wavelength of 340 nm. Upon the addition of ultra-trace amount of CPZ, the fluorescence signal of TGA-CdTe-QDs declines due to electron transfer process from excited TGA-CdTe-QDs to CPZ molecules, whereas the fluorescence peak of B-CDs is unaffected. Therefore, a new fluorimetric platform was prepared for the assay of CPZ in the range of 2.2 × 10-10 to 5.0 × 10-9 M with a detection limit of 1.3 × 10-10 M. Moreover, the practicability of the designed strategy was investigated for the detection of CPZ in biological samples and the results demonstrate that it possesses considerable potential to be utilized in practical applications.
Collapse
Affiliation(s)
- Saeedeh Narimani
- Department of Analytical Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
| | - Naser Samadi
- Department of Analytical Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
| | - Elnaz Delnavaz
- Department of Analytical Chemistry, Faculty of Chemistry, Tabriz University, Tabriz, Iran
| |
Collapse
|
3
|
Jha A, Pathania D, Sonu, Damathia B, Raizada P, Rustagi S, Singh P, Rani GM, Chaudhary V. Panorama of biogenic nano-fertilizers: A road to sustainable agriculture. ENVIRONMENTAL RESEARCH 2023; 235:116456. [PMID: 37343760 DOI: 10.1016/j.envres.2023.116456] [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: 05/06/2023] [Revised: 06/14/2023] [Accepted: 06/17/2023] [Indexed: 06/23/2023]
Abstract
The ever-increasing demand for food from the growing population has augmented the consumption of fertilizers in global agricultural practices. However, the excessive usage of chemical fertilizers with poor efficacy is drastically deteriorating ecosystem health through the degradation of soil fertility by diminishing soil microflora, environment contamination, and human health by inducing chemical remnants to the food chain. These challenges have been addressed by the integration of nanotechnological and biotechnological approaches resulting in nano-enabled biogenic fertilizers (NBF), which have revolutionized agriculture sector and food production. This review critically details the state-of-the-art NBF production, types, and mechanism involved in cultivating crop productivity/quality with insights into genetic, physiological, morphological, microbiological, and physiochemical attributes. Besides, it explores the associated challenges and future routes to promote the adoption of NBF for intelligent and sustainable agriculture. Furthermore, diverse applications of nanotechnology in precision agriculture including plant biosensors and its impact on agribusiness and environmental management are discussed.
Collapse
Affiliation(s)
- Ayush Jha
- University Institute of Biotechnology, Chandigarh University, Gharuan, Punjab, 140413, India
| | - Diksha Pathania
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - Sonu
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Bhavna Damathia
- University Institute of Biotechnology, Chandigarh University, Gharuan, Punjab, 140413, India
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Sarvesh Rustagi
- School of Applied and Life Sciences, Uttaranchal University, Dehradun, Uttrakhand, India
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India.
| | - Gokana Mohana Rani
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Keelung Road, Taipei, 10607, Taiwan, ROC
| | - Vishal Chaudhary
- Physics Department, Bhagini Nivedita College, University of Delhi, Delhi, India.
| |
Collapse
|
4
|
Dhakate P, Kandhol N, Raturi G, Ray P, Bhardwaj A, Srivastava A, Kaushal L, Singh A, Pandey S, Chauhan DK, Dubey NK, Sharma S, Singh VP, Sahi S, Grillo R, Peralta-Videa J, Deshmukh R, Tripathi DK. Silicon nanoforms in crop improvement and stress management. CHEMOSPHERE 2022; 305:135165. [PMID: 35667508 DOI: 10.1016/j.chemosphere.2022.135165] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Although, silicon - the second most abundant element in the earth crust could not supersede carbon (C) in the competition of being the building block of life during evolution, yet its presence has been reported in some life forms. In case of the plants, silicon has been reported widely to promote the plant growth under normal as well as stressful situations. Nanoform of silicon is now being explored for its potential to improve plant productivity and its tolerance against various stresses. Silicon nanoparticles (SiNPs) in the form of nanofertilizers, nanoherbicides, nanopesticides, nanosensors and targeted delivery systems, find great utilization in the field of agriculture. However, the mechanisms underlying their uptake by plants need to be deciphered in detail. Silicon nanoformss are reported to enhance plant growth, majorly by improving photosynthesis rate, elevating nutrient uptake and mitigating reactive oxygen species (ROS)-induced oxidative stress. Various studies have reported their ability to provide tolerance against a range of stresses by upregulating plant defense responses. Moreover, they are proclaimed not to have any detrimental impacts on environment yet. This review includes the up-to-date information in context of the eminent role of silicon nanoforms in crop improvement and stress management, supplemented with suggestions for future research in this field.
Collapse
Affiliation(s)
| | - Nidhi Kandhol
- Crop Nanobiology and Molecular Stress Physiology Laboratory, Amity Institute of Organic Agriculture, Amity University Uttar Pradesh, Sector-125, Noida, 201313, India
| | - Gaurav Raturi
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Priyanka Ray
- Crop Nanobiology and Molecular Stress Physiology Laboratory, Amity Institute of Organic Agriculture, Amity University Uttar Pradesh, Sector-125, Noida, 201313, India
| | - Anupriya Bhardwaj
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Aakriti Srivastava
- Crop Nanobiology and Molecular Stress Physiology Laboratory, Amity Institute of Organic Agriculture, Amity University Uttar Pradesh, Sector-125, Noida, 201313, India
| | - Laveena Kaushal
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Akanksha Singh
- Crop Nanobiology and Molecular Stress Physiology Laboratory, Amity Institute of Organic Agriculture, Amity University Uttar Pradesh, Sector-125, Noida, 201313, India
| | - Sangeeta Pandey
- Plant-Microbe Interaction Laboratory, Amity Institute of Organic Agriculture, Amity University Uttar Pradesh, Sector-125, Noida, 201313, India
| | - Devendra Kumar Chauhan
- D D Pant Interdisciplinary Research Laboratory, Department of Botany, University of Allahabad, Prayagraj, UP India
| | - Nawal Kishore Dubey
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi, India
| | - Shivesh Sharma
- Department of Biotechnology, Motilal Nehru National Institute of Technology,Allahabad, Prayagraj, India
| | - Vijay Pratap Singh
- Department of Botany, C.M.P. Degree College, University of Allahabad, Allahabad-211002, India
| | - Shivendra Sahi
- Department of Biology, Saint Joseph's University, University City Campus, 600 S. 43rd St. Philadelphia, PA 19104, USA
| | - Renato Grillo
- São Paulo State University (UNESP), Department of Physics and Chemistry, School of Engineering, Ilha Solteira, SP, 15385-000, Brazil
| | - Jose Peralta-Videa
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 West University Ave., El Paso, TX, 79968, USA
| | - Rupesh Deshmukh
- National Institute of Plant Genome Research, New Delhi, India.
| | - Durgesh Kumar Tripathi
- Crop Nanobiology and Molecular Stress Physiology Laboratory, Amity Institute of Organic Agriculture, Amity University Uttar Pradesh, Sector-125, Noida, 201313, India.
| |
Collapse
|
5
|
Behl T, Kaur I, Sehgal A, Singh S, Sharma N, Bhatia S, Al-Harrasi A, Bungau S. The dichotomy of nanotechnology as the cutting edge of agriculture: Nano-farming as an asset versus nanotoxicity. CHEMOSPHERE 2022; 288:132533. [PMID: 34655646 DOI: 10.1016/j.chemosphere.2021.132533] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/21/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The unprecedented setbacks and environmental complications, faced by global agro-farming industry, have led to the advent of nanotechnology in agriculture, which has been recognized as a novel and innovative approach in development of sustainable farming practices. The agricultural regimen is the "head honcho" of the world, however presently certain approaches have been imposing grave danger to the environment and human civilization. The nano-farming paradigm has successfully elevated the growth and development of plants, parallel to the production, quality, germination/transpiration index, photosynthetic machinery, genetic progression, and so on. This has optimized the traditional farming into precision farming, utilising nano-based sensors and nanobionics, smart delivery tools, nanotech facets in plant disease management, nanofertilizers, enhancement of plant adaptive potential to external stress, role in bioenergy conservation and so on. These applications portray nanorevolution as "the big cheese" of global agriculture, mitigating the bottlenecks of conventional practices. Besides the applications of nanotechnology, the review identifies the limitations, like possible harmful impact on environment, mankind and plants, as the "Achilles heel" in agro-industry, aiming to establish its defined role in agriculture, while simultaneously considering the risks, in order to resolve them, thus abiding by "technology-yes, but safety-must". The authors aim to provide a significant opportunity to the nanotech researchers, Botanists and environmentalists, to promote judicial use of nanoparticles and establish a secure and safe environment.
Collapse
Affiliation(s)
- Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Ishnoor Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Saurabh Bhatia
- Natural & Medical Sciences Research Centre, University of Nizwa, Nizwa, Oman; School of Health Science, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Centre, University of Nizwa, Nizwa, Oman
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Romania
| |
Collapse
|
6
|
Azimi M, Manzoori JL, Amjadi M, Abolhasani J. Determination of Deltamethrin in Water Samples Using Sulfur and Nitrogen Co-Doped Carbon Quantum Dots as a Chemiluminescence Probe. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821100026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
Sharma P, Kumar S, Patel A, Datta B, DeLong RK. Nanomaterials for Agricultural and Ecological Defense Applications: Active Agents and Sensors. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2021; 13:e1713. [PMID: 33749154 DOI: 10.1002/wnan.1713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 11/08/2022]
Abstract
The world we live in today is overpopulated with an unprecedented number of people competing for fewer and fewer precious resources. The struggle to efficiently steward and manage these resources is a global problem in need of concrete and urgent solutions. Nanomaterials have driven innovation in diverse industrial sectors including military, aviation, electronic, and medical among others. Nanoscale materials possess unique surfaces and exquisite opto-electronic properties that make them uniquely suited to environmental, biological, and ecological defense applications. A tremendous upsurge of research activity in these areas is evident from the exponential increase in publications worldwide. Here we review recent applications of nanomaterials toward soil health and management, abiotic and biotic stress management, plant defense, delivery of the RNA Interference (RNAi), plant growth, manufacture of agro-products, and ecological investigations related to farming. For example, nanomaterial constructs have been used to counter environmental stresses and in plant defense and disease diagnosis. Nanosensor chemistries have been developed to monitor water quality and measure specific pollutant levels. Specific nanomaterials such as silver, iron oxide, and zinc oxide proffer protection to plants from pathogens. This review describes progress in nanomaterial-based agricultural and ecological defense and seeks to identify factors that would enable their wider commercialization and deployment. This article is categorized under: Diagnostic Tools > Biosensing Toxicology and Regulatory Issues in Nanomedicine > Toxicology of Nanomaterials Diagnostic Tools > Diagnostic Nanodevices.
Collapse
Affiliation(s)
- Pramila Sharma
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Sanjay Kumar
- School of Biosciences and Bioengineering, D. Y. Patil International University, Pune, India
| | - Axita Patel
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Bhaskar Datta
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India.,Department of Chemistry, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Robert K DeLong
- Nanotechnology Innovation Center, Kansas State University, Kansas, USA
| |
Collapse
|
8
|
Singh N, Bhuker A, Jeevanadam J. Effects of metal nanoparticle-mediated treatment on seed quality parameters of different crops. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:1067-1089. [PMID: 33660031 DOI: 10.1007/s00210-021-02057-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/20/2021] [Indexed: 12/26/2022]
Abstract
The increasing population of the world requires novel techniques to feed everyone, which can replace or work along with traditional methods to increase production of agricultural crops. In recent times, nanotechnology is considered as a promising and emerging approach to be incorporated in agriculture to improve productivity of different crops by the administration of nanoparticles through seed treatment, foliar spray on plants, nano-fertilizers for balanced crop nutrition, nano-herbicides for effective weed control, nanoinsecticides for plant protection, early detection of plant diseases and nutrient deficiencies using diagnostics kits, and nano-pheromones for effective monitoring of pests. Further, distinct nanoparticles with unique physicochemical and biological properties are used in agriculture to increase the percentage of seed germination, which is the initial step to increase the crop yield. In the context of agricultural crops, nanoparticles have both positive effects on seed quality parameters, such as germination percentage, seedling length, seedling dry weight and vigor indices, as well as negative impacts of causing toxicity toward the environment. Thus, the aim of this review article is to provide a comprehensive overview on the effects of super-dispersive metal powders, such as zinc, silver, and titanium nanoparticles on the seed quality parameters of different crops. In addition, the drawback of conventional seed growth enhancers, impact of metal nanoparticles toward seeds, and mechanism of nanoparticles to increase seed germination were also discussed.
Collapse
Affiliation(s)
- Nirmal Singh
- Department of Seed Science and Technology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, 125004, India
| | - Axay Bhuker
- Department of Seed Science and Technology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, 125004, India.
| | - Jaison Jeevanadam
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9020-105, Funchal, Portugal
| |
Collapse
|
9
|
Li N, Yang H. Construction of natural polymeric imprinted materials and their applications in water treatment: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123643. [PMID: 32846267 DOI: 10.1016/j.jhazmat.2020.123643] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 07/08/2020] [Accepted: 08/03/2020] [Indexed: 05/17/2023]
Abstract
Molecularly imprinted materials (MIMs) have been widely used in various fields, including water treatment, chemical sensing, and biotechnology, because of their specific recognition and high selectivity. MIMs are usually obtained via two successive steps, namely, (1) copolymerization and crosslinking reactions of the preassembled complex of comonomers and a specific target compound (2) and thorough removal of template molecules. Some functional polymers are directly used as supporting materials and functional groups assembled with target compound are provided to simplify the preparation of MIMs. Natural polymers, such as chitosan, cyclodextrin, sodium alginate, starch, cellulose, lignin and their derivatives, are good candidates because of their environmentally friendly properties, low costs, and abundant active functional groups. In this study, different methods for the preparation of natural polymeric MIMs were reviewed in terms of the construction of microscopic binding cavities and macroscopic visible condensed structures with different shapes. Natural polymeric MIMs in water treatment applications, such as adsorption and detection of various pollutants from aqueous solutions, were summarized. Prospects on the development of novel and high-performance natural polymeric MIMs were discussed to overcome the difficulties in their preparation and applications.
Collapse
Affiliation(s)
- Na Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; Department of Environmental Science, School of Tropical and Laboratory Medicine, Hainan Medical University, Haikou 571199, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
| |
Collapse
|
10
|
Kazemifard N, Ensafi AA, Dehkordi ZS. A review of the incorporation of QDs and imprinting technology in optical sensors – imprinting methods and sensing responses. NEW J CHEM 2021. [DOI: 10.1039/d1nj01104a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This review aims to cover the simultaneous method of using molecularly imprinted technology and quantum dots (QDs) as well as its application in the field of optical sensors.
Collapse
Affiliation(s)
- Nafiseh Kazemifard
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 84156-83111
- Iran
| | - Ali A. Ensafi
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 84156-83111
- Iran
| | | |
Collapse
|
11
|
Multicolor nitrogen dots for rapid detection of thiram and chlorpyrifos in fruit and vegetable samples. Anal Chim Acta 2020; 1136:72-81. [PMID: 33081951 DOI: 10.1016/j.aca.2020.08.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 07/14/2020] [Accepted: 08/20/2020] [Indexed: 12/23/2022]
Abstract
The development of sensitive fluorescence sensors and efficient preparation of samples is a challenge in the detection of pesticides in complex samples. In this study, multicolor nitrogen dots (M-Ndots) were synthesised via microwave irradiation at 140 °C for 10 min with 5-amino-1H-tetrazole and p-phenylenediamine as precursors, which have a high fluorescence quantum yield of up to 31%. Furthermore, the M-Ndots were employed as fluorescence sensors for pesticide detection by being combined with a gas membrane separation device, to eliminate the interference from the complex sample matrix. In this process, the M-Ndots were used for sensing thiram and chlorpyrifos through their affinities to Cu2+ and Fe3+, respectively. Because thiram could decompose into volatile CS2, its derivate was sensed using the fluorescence of M-Ndots via a complexation reaction with Cu2+. Chlorpyrifos, due to its volatility, can reduce the Fe3+ ion by inhibiting the activity of acetylcholinesterase, which produces H2O2 to oxidise Fe2+. In a real application, the time consumption for 96 samples was less than 30 min in one run of the gas membrane separation device. The recoveries for thiram and chlorpyrifos ranged from 90.0% to 115.0%, and the analytical results were validated using LC-MS/MS methods, with relative errors ranging from -7.4% to 10.1%.
Collapse
|
12
|
Xie L, Xiao N, Li L, Xie X, Li Y. An Investigation of the Intermolecular Interactions and Recognition Properties of Molecular Imprinted Polymers for Deltamethrin through Computational Strategies. Polymers (Basel) 2019; 11:polym11111872. [PMID: 31766182 PMCID: PMC6918425 DOI: 10.3390/polym11111872] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/11/2019] [Accepted: 11/11/2019] [Indexed: 12/23/2022] Open
Abstract
Deltamethrin (DM) is a toxic pesticide that is nonetheless widely used to control insect pests in agricultural production. Although the number of DM molecularly imprinted polymers (MIPs) is increasing in many scientific applications, the theoretical aspects of the participating intramolecular forces are not fully understood. This paper aims to explore the intermolecular interactions between the template molecule DM and the functional monomer acrylamide (AM) through density functional theory (DFT), analysis of hydrogen nuclear magnetic resonance (1H-NMR), Fourier transform infrared spectroscopy (FTIR), and adsorption thermodynamics. The results indicated that there is strong hydrogen bonding between O19 of DM and H9 of AM, suggesting that it is the preferable site for the binding of the target molecule. The existence of interaction sites was found to play an important role in the recognition process. The results from selective adsorption experiments showed that the DM MIPs exhibited the highest adsorption capacity for DM (Q = 75.72 mg g−1) as compared to the five structural analogs. Furthermore, the recovery rates of spiked DM from various teas using the DM MIPs as solid-phase extraction filler also possessed a high value (all greater than 83.68%), which enables them to be used as separate and recognition functional materials.
Collapse
Affiliation(s)
| | | | - Lu Li
- Correspondence: ; Tel.: +86-137-1124-0878
| | | | | |
Collapse
|
13
|
Vaneckova T, Bezdekova J, Tvrdonova M, Vlcnovska M, Novotna V, Neuman J, Stossova A, Kanicky V, Adam V, Vaculovicova M, Vaculovic T. CdS quantum dots-based immunoassay combined with particle imprinted polymer technology and laser ablation ICP-MS as a versatile tool for protein detection. Sci Rep 2019; 9:11840. [PMID: 31413275 PMCID: PMC6694198 DOI: 10.1038/s41598-019-48290-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 08/01/2019] [Indexed: 01/07/2023] Open
Abstract
For the first time, the combination of molecularly imprinted polymer (MIP) technology with laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is presented with focus on an optimization of the LA-ICP-MS parameters such as laser beam diameter, laser beam fluence, and scan speed using CdS quantum dots (QDs) as a template and dopamine as a functional monomer. A non-covalent imprinting approach was employed in this study due to the simplicity of preparation. Simple oxidative polymerization of the dopamine that creates the self-assembly monolayer seems to be an ideal choice. The QDs prepared by UV light irradiation synthesis were stabilized by using mercaptosuccinic acid. Formation of a complex of QD-antibody and QD-antibody-antigen was verified by using capillary electrophoresis with laser-induced fluorescence detection. QDs and antibody were connected together via an affinity peptide linker. LA-ICP-MS was employed as a proof-of-concept for detection method of two types of immunoassay: 1) antigen extracted from the sample by MIP and subsequently overlaid/immunoreacted by QD-labelled antibodies, 2) complex of antigen, antibody, and QD formed in the sample and subsequently extracted by MIP. The first approach provided higher sensitivity (MIP/NIP), however, the second demonstrated higher selectivity. A mixture of proteins with size in range 10–250 kDa was used as a model sample to demonstrate the capability of both approaches for detection of IgG in a complex sample.
Collapse
Affiliation(s)
- Tereza Vaneckova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic
| | - Jaroslava Bezdekova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic
| | - Michaela Tvrdonova
- Department of Chemistry, Masaryk University, Kamenice 753/5, CZ-625 00, Brno, Czech Republic
| | - Marcela Vlcnovska
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic
| | - Veronika Novotna
- NenoVision s.r.o., Purkynova 649/127, CZ-612 00, Brno, Czech Republic
| | - Jan Neuman
- NenoVision s.r.o., Purkynova 649/127, CZ-612 00, Brno, Czech Republic
| | - Aneta Stossova
- Department of Chemistry, Masaryk University, Kamenice 753/5, CZ-625 00, Brno, Czech Republic
| | - Viktor Kanicky
- Department of Chemistry, Masaryk University, Kamenice 753/5, CZ-625 00, Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00, Brno, Czech Republic. .,Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00, Brno, Czech Republic.
| | - Tomas Vaculovic
- Department of Chemistry, Masaryk University, Kamenice 753/5, CZ-625 00, Brno, Czech Republic
| |
Collapse
|
14
|
Xie L, Zhou L, Li L, Xie X, Li Y. Preparation and adsorption selectivity of deltamethrin molecularly imprinted polymers by two-step seed swelling method. J Appl Polym Sci 2018. [DOI: 10.1002/app.47415] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Lei Xie
- College of Food Science; South China Agricultural University; No.483, Wushan Street, Tianhe District Guangzhou City 510642 People's Republic of China
| | - Liumei Zhou
- College of Food Science; South China Agricultural University; No.483, Wushan Street, Tianhe District Guangzhou City 510642 People's Republic of China
| | - Lu Li
- College of Food Science; South China Agricultural University; No.483, Wushan Street, Tianhe District Guangzhou City 510642 People's Republic of China
| | - Xinan Xie
- College of Food Science; South China Agricultural University; No.483, Wushan Street, Tianhe District Guangzhou City 510642 People's Republic of China
| | - Yan Li
- College of Food Science; South China Agricultural University; No.483, Wushan Street, Tianhe District Guangzhou City 510642 People's Republic of China
| |
Collapse
|
15
|
Tu Q, Ma C, Tian C, Yuan M, Han X, Wang DE, Cao C, Wang J. Quantum dots modified with quaternized poly(dimethylaminoethyl methacrylate) for selective recognition and killing of bacteria over mammalian cells. Analyst 2018; 141:3328-36. [PMID: 27111264 DOI: 10.1039/c6an00725b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Copper-free click chemistry has been used to graft quaternized poly(dimethylaminoethyl methacrylate) (QPA) modified with azide to the quantum dots (QDs) derived with dibenzocyclooctynes (DBCO). The success of the quaternary ammonium polymer-modified QDs was confirmed by ultraviolet-visible spectrophotometry (UV-Vis), fluorescence spectroscopy, zeta (ζ) potential, size distribution, and transmission electron microscopy (TEM). The QPA-modified QDs exhibited properties of selective recognition and killing of bacteria. The novelty of this study lies in fact that the synthesis method of the antimicrobial QPA-modified QDs is simple. Moreover, from another standpoint, QPA-modified QDs simultaneously possess abilities of selective recognition and killing of bacteria over mammalian cells, which is very different from the currently designed multifunctional antimicrobial systems composed of complicated systematic compositions.
Collapse
Affiliation(s)
- Qin Tu
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China.
| | - Chao Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Chang Tian
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Maosen Yuan
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China.
| | - Xiang Han
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China.
| | - Dong-En Wang
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China.
| | - Chenyu Cao
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China.
| | - Jinyi Wang
- College of Science, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China. and College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| |
Collapse
|
16
|
Zhou JW, Zou XM, Song SH, Chen GH. Quantum Dots Applied to Methodology on Detection of Pesticide and Veterinary Drug Residues. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1307-1319. [PMID: 29378133 DOI: 10.1021/acs.jafc.7b05119] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The pesticide and veterinary drug residues brought by large-scale agricultural production have become one of the issues in the fields of food safety and environmental ecological security. It is necessary to develop the rapid, sensitive, qualitative and quantitative methodology for the detection of pesticide and veterinary drug residues. As one of the achievements of nanoscience, quantum dots (QDs) have been widely used in the detection of pesticide and veterinary drug residues. In these methodology studies, the used QD-signal styles include fluorescence, chemiluminescence, electrochemical luminescence, photoelectrochemistry, etc. QDs can also be assembled into sensors with different materials, such as QD-enzyme, QD-antibody, QD-aptamer, and QD-molecularly imprinted polymer sensors, etc. Plenty of study achievements in the field of detection of pesticide and veterinary drug residues have been obtained from the different combinations among these signals and sensors. They are summarized in this paper to provide a reference for the QD application in the detection of pesticide and veterinary drug residues.
Collapse
Affiliation(s)
- Jia-Wei Zhou
- College of Food and Bioengineering, Jiangsu University , Zhenjiang 212013, China
| | - Xue-Mei Zou
- College of Food and Bioengineering, Jiangsu University , Zhenjiang 212013, China
| | - Shang-Hong Song
- College of Food and Bioengineering, Jiangsu University , Zhenjiang 212013, China
| | - Guan-Hua Chen
- College of Food and Bioengineering, Jiangsu University , Zhenjiang 212013, China
| |
Collapse
|
17
|
Advances in Nano Based Biosensors for Food and Agriculture. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2018. [DOI: 10.1007/978-3-319-70166-0_1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
18
|
Simultaneous detection of folic acid and methotrexate by an optical sensor based on molecularly imprinted polymers on dual-color CdTe quantum dots. Anal Chim Acta 2017; 996:64-73. [DOI: 10.1016/j.aca.2017.10.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 09/27/2017] [Accepted: 10/03/2017] [Indexed: 12/28/2022]
|
19
|
Duhan JS, Kumar R, Kumar N, Kaur P, Nehra K, Duhan S. Nanotechnology: The new perspective in precision agriculture. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2017; 15:11-23. [PMID: 28603692 PMCID: PMC5454086 DOI: 10.1016/j.btre.2017.03.002] [Citation(s) in RCA: 265] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 01/01/2023]
Abstract
Nanotechnology is an interdisciplinary research field. In recent past efforts have been made to improve agricultural yield through exhaustive research in nanotechnology. The green revolution resulted in blind usage of pesticides and chemical fertilizers which caused loss of soil biodiversity and developed resistance against pathogens and pests as well. Nanoparticle-mediated material delivery to plants and advanced biosensors for precision farming are possible only by nanoparticles or nanochips. Nanoencapsulated conventional fertilizers, pesticides and herbicides helps in slow and sustained release of nutrients and agrochemicals resulting in precise dosage to the plants. Nanotechnology based plant viral disease detection kits are also becoming popular and are useful in speedy and early detection of viral diseases. In this article, the potential uses and benefits of nanotechnology in precision agriculture are discussed. The modern nanotechnology based tools and techniques have the potential to address the various problems of conventional agriculture and can revolutionize this sector.
Collapse
Affiliation(s)
- Joginder Singh Duhan
- Department of Biotechnology, Chaudhary Devi Lal University, Sirsa-125055, Haryana, India
| | - Ravinder Kumar
- Department of Biotechnology, Chaudhary Devi Lal University, Sirsa-125055, Haryana, India
| | - Naresh Kumar
- Department of Biotechnology, Chaudhary Devi Lal University, Sirsa-125055, Haryana, India
| | - Pawan Kaur
- Department of Biotechnology, Chaudhary Devi Lal University, Sirsa-125055, Haryana, India
| | - Kiran Nehra
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science & Technology, Murthal-131039, Sonipat, Haryana, India
| | - Surekha Duhan
- Department of Botany, Ch. Mani Ram Godara Govt. College for Women, Bhodia Khera, Fatehabad-125050, Haryana, India
| |
Collapse
|
20
|
Specific Fluorescence Probe for Direct Recognition of Dimethoate Using Molecularly Imprinting Polymer on ZnO Quantum Dots. J Fluoresc 2017; 27:1339-1347. [DOI: 10.1007/s10895-017-2068-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 03/02/2017] [Indexed: 11/26/2022]
|
21
|
Qiu H, Gao L, Wang J, Pan J, Yan Y, Zhang X. A precise and efficient detection of Beta-Cyfluthrin via fluorescent molecularly imprinted polymers with ally fluorescein as functional monomer in agricultural products. Food Chem 2017; 217:620-627. [DOI: 10.1016/j.foodchem.2016.09.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 05/13/2016] [Accepted: 09/05/2016] [Indexed: 11/30/2022]
|
22
|
Castellarnau M, Ramón-Azcón J, Gonzalez-Quinteiro Y, López JF, Grimalt JO, Marco MP, Nieuwenhuijsen M, Picado A. Assessment of analytical methods to determine pyrethroids content of bednets. Trop Med Int Health 2016; 22:41-51. [PMID: 27717143 DOI: 10.1111/tmi.12794] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To present and evaluate simple, cost-effective tests to determine the amount of insecticide on treated materials. METHODS We developed and evaluated a competitive immunoassay on two different platforms: a label-free impedimetric biosensor (EIS biosensor) and a lateral flow. Both approaches were validated by gas chromatography (GC) and ELISA, gold standards for analytical methods and immunoassays, respectively. Finally, commercially available pyrethroid-treated ITN samples were analysed. Different extraction methods were evaluated. RESULTS Insecticide extraction by direct infusion of the ITN samples with dichloromethane and dioxane showed recovery efficiencies around 100% for insecticide-coated bednets, and >70% for insecticide-incorporated bednets. These results were comparable to those obtained with standard sonication methods. The competitive immunoassay characterisation with ELISA presented a dynamic range between 12 nm and 1.5 μm (coefficient of variation (CV) below 5%), with an IC50 at 138 nm, and a limit of detection (LOD) of 3.2 nm. EIS biosensor had a linear range between 1.7 nm and 61 nm (CV around 14%), with an IC50 at 10.4 nm, and a LOD of 0.6 nm. Finally, the lateral flow approach showed a dynamic range between 150 nm and 1.5 μm, an IC50 at 505 nm and a LOD of 67 nm. CONCLUSIONS ELISA can replace chromatography as an accurate laboratory technique to determine insecticide concentration in bednets. The lateral flow approach developed can be used to estimate ITN insecticide concentration in the field. This new technology, coupled to the new extraction methods, should provide reliable guidelines for ITN use and replacement in the field.
Collapse
Affiliation(s)
- Marc Castellarnau
- ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| | - Javier Ramón-Azcón
- Nanobiotechnology for Diagnostics, Institute for Advanced Chemistry of Catalonia of the Spanish Council for Scientific Research, Barcelona, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina, Barcelona, Spain
| | | | - Jordi F López
- Institute of Environmental Assessment and Water Research, Barcelona, Spain
| | - Joan O Grimalt
- Institute of Environmental Assessment and Water Research, Barcelona, Spain
| | - María-Pilar Marco
- Nanobiotechnology for Diagnostics, Institute for Advanced Chemistry of Catalonia of the Spanish Council for Scientific Research, Barcelona, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina, Barcelona, Spain
| | - Mark Nieuwenhuijsen
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Universitat Pompeu Fabra (UPF), CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - Albert Picado
- ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain
| |
Collapse
|
23
|
Bapat G, Labade C, Chaudhari A, Zinjarde S. Silica nanoparticle based techniques for extraction, detection, and degradation of pesticides. Adv Colloid Interface Sci 2016; 237:1-14. [PMID: 27780560 DOI: 10.1016/j.cis.2016.06.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 05/31/2016] [Accepted: 06/01/2016] [Indexed: 12/07/2022]
Abstract
Silica nanoparticles (SiNPs) find applications in the fields of drug delivery, catalysis, immobilization and sensing. Their synthesis can be mediated in a facile manner and they display broad range compatibility and stability. Their existence in the form of spheres, wires and sheets renders them suitable for varied purposes. This review summarizes the use of silica nanostructures in developing techniques for extraction, detection and degradation of pesticides. Silica nanostructures on account of their sorbent properties, porous nature and increased surface area allow effective extraction of pesticides. They can be modified (with ionic liquids, silanes or amines), coated with molecularly imprinted polymers or magnetized to improve the extraction of pesticides. Moreover, they can be altered to increase their sensitivity and stability. In addition to the analysis of pesticides by sophisticated techniques such as High Performance Liquid Chromatography or Gas chromatography, silica nanoparticles related simple detection methods are also proving to be effective. Electrochemical and optical detection based on enzymes (acetylcholinesterase and organophosphate hydrolase) or antibodies have been developed. Pesticide sensors dependent on fluorescence, chemiluminescence or Surface Enhanced Raman Spectroscopic responses are also SiNP based. Moreover, degradative enzymes (organophosphate hydrolases, carboxyesterases and laccases) and bacterial cells that produce recombinant enzymes have been immobilized on SiNPs for mediating pesticide degradation. After immobilization, these systems show increased stability and improved degradation. SiNP are significant in developing systems for effective extraction, detection and degradation of pesticides. SiNPs on account of their chemically inert nature and amenability to surface modifications makes them popular tools for fabricating devices for 'on-site' applications.
Collapse
|
24
|
Nsibande S, Forbes P. Fluorescence detection of pesticides using quantum dot materials – A review. Anal Chim Acta 2016; 945:9-22. [DOI: 10.1016/j.aca.2016.10.002] [Citation(s) in RCA: 158] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/09/2016] [Accepted: 10/02/2016] [Indexed: 11/15/2022]
|
25
|
Xiao TT, Shi XZ, Jiao HF, Sun AL, Ding H, Zhang RR, Pan DD, Li DX, Chen J. Selective and sensitive determination of cypermethrin in fish via enzyme-linked immunosorbent assay-like method based on molecularly imprinted artificial antibody-quantum dot optosensing materials. Biosens Bioelectron 2016; 75:34-40. [DOI: 10.1016/j.bios.2015.08.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/27/2015] [Accepted: 08/08/2015] [Indexed: 11/30/2022]
|
26
|
Amjadi M, Jalili R, Manzoori JL. A sensitive fluorescent nanosensor for chloramphenicol based on molecularly imprinted polymer-capped CdTe quantum dots. LUMINESCENCE 2015; 31:633-9. [DOI: 10.1002/bio.3003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 04/22/2015] [Accepted: 07/11/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Mohammad Amjadi
- Department of Analytical Chemistry; Faculty of Chemistry, University of Tabriz; Tabriz 5166616471 Iran
| | - Roghayeh Jalili
- Department of Analytical Chemistry; Faculty of Chemistry, University of Tabriz; Tabriz 5166616471 Iran
| | - Jamshid L. Manzoori
- Department of Analytical Chemistry; Faculty of Chemistry, University of Tabriz; Tabriz 5166616471 Iran
| |
Collapse
|
27
|
Design and development of molecularly imprinted polymers for the selective extraction of deltamethrin in olive oil: An integrated computational-assisted approach. J Chromatogr A 2015. [DOI: 10.1016/j.chroma.2015.07.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
28
|
Zhang Z, Li J, Wang X, Shen D, Chen L. Quantum dots based mesoporous structured imprinting microspheres for the sensitive fluorescent detection of phycocyanin. ACS APPLIED MATERIALS & INTERFACES 2015; 7:9118-9127. [PMID: 25875154 DOI: 10.1021/acsami.5b00908] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Phycocyanin with important physiological/environmental significance has attracted increasing attention; versatile molecularly imprinted polymers (MIPs) have been applied to diverse species, but protein imprinting is still quite difficult. Herein, using phycocyanin as template via a sol-gel process, we developed a novel fluorescent probe for specific recognition and sensitive detection of phycocyanin by quantum dots (QDs) based mesoporous structured imprinting microspheres (SiO2@QDs@ms-MIPs), obeying electron-transfer-induced fluorescence quenching mechanism. When phycocyanin was present, a Meisenheimer complex would be produced between phycocyanin and primary amino groups of QDs surface, and then the photoluminescent energy of QDs would be transferred to the complex, leading to the fluorescence quenching of QDs. As a result, the fluorescent intensity of the SiO2@QDs@ms-MIPs was significantly decreased within 8 min, and accordingly a favorable linearity within 0.02-0.8 μM and a high detectability of 5.9 nM were presented. Excellent recognition specificity for phycocyanin over its analogues was displayed, with a high imprinting factor of 4.72. Furthermore, the validated probe strategy was successfully applied to seawater and lake water sample analysis, and high recoveries in the range of 94.0-105.0% were attained at three spiking levels of phycocyanin, with precisions below 5.3%. The study provided promising perspectives to develop fluorescent probes for convenient, rapid recognition and sensitive detection of trace proteins from complex matrices, and further pushed forward protein imprinting research.
Collapse
Affiliation(s)
- Zhong Zhang
- †Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Provincial Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- §University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinhua Li
- †Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Provincial Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Xiaoyan Wang
- †Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Provincial Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
- ‡Key Laboratory in Molecular and Nanomaterials Probes of the Ministry of Education of China, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Dazhong Shen
- ‡Key Laboratory in Molecular and Nanomaterials Probes of the Ministry of Education of China, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Lingxin Chen
- †Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Provincial Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| |
Collapse
|
29
|
Jalili R, Amjadi M. Surface molecular imprinting on silane-functionalized carbon dots for selective recognition of nifedipine. RSC Adv 2015. [DOI: 10.1039/c5ra12189b] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
An eco-friendly molecularly imprinted fluorescent sensor was developed for nifedipine (NIF) based on silane-functionalized carbon dots.
Collapse
Affiliation(s)
- Roghayeh Jalili
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Tabriz
- Tabriz 5166616471
- Iran
| | - Mohammad Amjadi
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Tabriz
- Tabriz 5166616471
- Iran
| |
Collapse
|
30
|
Huang DL, Wang RZ, Liu YG, Zeng GM, Lai C, Xu P, Lu BA, Xu JJ, Wang C, Huang C. Application of molecularly imprinted polymers in wastewater treatment: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:963-77. [PMID: 25280502 DOI: 10.1007/s11356-014-3599-8] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 09/11/2014] [Indexed: 05/13/2023]
Abstract
Molecularly imprinted polymers are synthetic polymers possessing specific cavities designed for target molecules. They are prepared by copolymerization of a cross-linking agent with the complex formed from a template and monomers that have functional groups specifically interacting with the template through covalent or noncovalent bonds. Subsequent removal of the imprint template leaves specific cavities whose shape, size, and functional groups are complementary to the template molecule. Because of their predetermined selectivity, molecularly imprinted polymers (MIPs) can be used as ideal materials in wastewater treatment. Especially, MIP-based composites offer a wide range of potentialities in wastewater treatment. This paper reviews the latest applications of MIPs in wastewater treatment, highlights the development of MIP-based composites in wastewater, and offers suggestions for future success in the field of MIPs.
Collapse
Affiliation(s)
- Dan-Lian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan, 410082, China,
| | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Whitcombe MJ, Kirsch N, Nicholls IA. Molecular imprinting science and technology: a survey of the literature for the years 2004-2011. J Mol Recognit 2014; 27:297-401. [PMID: 24700625 DOI: 10.1002/jmr.2347] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/28/2013] [Accepted: 12/01/2013] [Indexed: 12/11/2022]
Abstract
Herein, we present a survey of the literature covering the development of molecular imprinting science and technology over the years 2004-2011. In total, 3779 references to the original papers, reviews, edited volumes and monographs from this period are included, along with recently identified uncited materials from prior to 2004, which were omitted in the first instalment of this series covering the years 1930-2003. In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by sections describing fundamental aspects of molecular imprinting including the development of novel polymer formats. Thereafter, literature describing efforts to apply these polymeric materials to a range of application areas is presented. Current trends and areas of rapid development are discussed.
Collapse
|
32
|
Comparative syntheses of tetracycline-imprinted polymeric silicate and acrylate on CdTe quantum dots as fluorescent sensors. Biosens Bioelectron 2014; 61:471-7. [DOI: 10.1016/j.bios.2014.05.058] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/28/2014] [Accepted: 05/29/2014] [Indexed: 11/23/2022]
|
33
|
Liu X, Li L, Liu YQ, Shi XB, Li WJ, Yang Y, Mao LG. Ultrasensitive detection of deltamethrin by immune magnetic nanoparticles separation coupled with surface plasmon resonance sensor. Biosens Bioelectron 2014; 59:328-34. [PMID: 24747571 DOI: 10.1016/j.bios.2014.03.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 02/28/2014] [Accepted: 03/11/2014] [Indexed: 10/25/2022]
Abstract
Small molecules or analytes present in trace level are difficult to be detected directly using conventional surface plasmon resonance (SPR) sensor, due to its small changes in the refractive index induced by the binding of these analytes on the sensor surface. In this paper, a new approach that combines SPR sensor technology with Fe3O4 magnetic nanoparticles (MNPs) assays is developed for directly detecting of deltamethrin in soybean. The Fe3O4 MNPs conjugated with antibodies specific to antigen serves as both labels for enhancing refractive index change due to the capture of target analyte, and "vehicles" for the rapid delivery of analyte from a sample solution to the sensor surface. Meanwhile, SPR direct detection format without Fe3O4 MNPs and gas chromatography (GC) analysis were conducted for detection of deltamethrin in soybean to demonstrate the amplification effect of Fe3O4 MNPs. A good linear relationship was obtained between SPR responses and deltamethrin concentrations over a range of 0.01-1 ng/mL with the lowest measurable concentration of 0.01 ng/mL. The results reveal that the detection sensitivity for deltamethrin was improved by 4 orders of magnitude compared with SPR direct detection format. The recovery of 95.5-119.8% was obtained in soybean. The excellent selectivity of the present biosensor is also confirmed by two kinds of pesticides (fenvalerate and atrazine) as controls. This magnetic separation and amplification strategy has great potential for detection of other small analytes in trace level concentration, with high selectivity and sensitivity by altering the target-analyte-capture agent labeled to the carboxyl-coated Fe3O4 MNPs.
Collapse
Affiliation(s)
- Xia Liu
- College of Food Science and Technology, Hunan Agricultural University, Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China.
| | - Lei Li
- College of Food Science and Technology, Hunan Agricultural University, Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, PR China
| | - You-Qian Liu
- College of Food Science and Technology, Hunan Agricultural University, Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, PR China
| | - Xing-Bo Shi
- College of Food Science and Technology, Hunan Agricultural University, Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, PR China
| | - Wen-Jin Li
- College of Food Science and Technology, Hunan Agricultural University, Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, PR China
| | - Yang Yang
- College of Food Science and Technology, Hunan Agricultural University, Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, PR China
| | - Lu-Gang Mao
- College of Food Science and Technology, Hunan Agricultural University, Hunan Province Key Laboratory of Food Science and Biotechnology, Changsha 410128, PR China
| |
Collapse
|
34
|
Zobeiri E, Bayandori Moghaddam A, Gudarzy F, Mohammadi H, Mozaffari S, Ganjkhanlou Y. Modified Eu-doped Y2 O3 nanoparticles as turn-off luminescent probes for the sensitive detection of pyridoxine. LUMINESCENCE 2014; 30:290-5. [PMID: 25060041 DOI: 10.1002/bio.2727] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 04/26/2014] [Accepted: 05/22/2014] [Indexed: 11/10/2022]
Abstract
Europium-doped yttrium oxide nanoparticles (Y2 O3 :Eu NPs) modified by captopril were prepared in aqueous solution. In this study, we report the effect of pyridoxine hydrochloride on the photoluminescence intensity of Y2 O3 :Eu NPs in pH 7.2 buffer solution. By increasing the pyridoxine concentration, the luminescence intensity of Y2 O3 :Eu NPs is quenched. The results show that this method demonstrates high sensitivity for pyridoxine determination. A linear relationship is observed between 0.0 and 62.0 μM with a correlation coefficient of 0.995 and a detection limit of 0.023 μM.
Collapse
Affiliation(s)
- Eshagh Zobeiri
- Department of Chemistry, Islamic Azad University, Qeshm Branch, Iran
| | | | | | | | | | | |
Collapse
|
35
|
Chao MR, Hu CW, Chen JL. Fluorescent turn-on detection of cysteine using a molecularly imprinted polyacrylate linked to allylthiol-capped CdTe quantum dots. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1209-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
36
|
Wei F, Wu Y, Xu G, Gao Y, Yang J, Liu L, Zhou P, Hu Q. Molecularly imprinted polymer based on CdTe@SiO2 quantum dots as a fluorescent sensor for the recognition of norepinephrine. Analyst 2014; 139:5785-92. [DOI: 10.1039/c4an00951g] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluorescent sensor with recognition ability for norepinephrine was simply prepared and actually used to determine norepinephrine in rat plasma.
Collapse
Affiliation(s)
- Fangdi Wei
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| | - Yanzi Wu
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| | - Guanhong Xu
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| | - Yankun Gao
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| | - Jing Yang
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| | - Liping Liu
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| | - Ping Zhou
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| | - Qin Hu
- School of Pharmacy
- Nanjing Medical University
- Nanjing 211166, China
| |
Collapse
|
37
|
Polymeric nanoparticles for optical sensing. Biotechnol Adv 2013; 31:1585-99. [DOI: 10.1016/j.biotechadv.2013.08.010] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 08/05/2013] [Accepted: 08/12/2013] [Indexed: 12/15/2022]
|
38
|
Abegão LMG, Ribeiro JHF, Ribeiro PA, Raposo M. Nano-molar deltamethrin sensor based on electrical impedance of PAH/PAZO layer-by-layer sensing films. SENSORS 2013; 13:10167-76. [PMID: 23966185 PMCID: PMC3812598 DOI: 10.3390/s130810167] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 08/01/2013] [Accepted: 08/05/2013] [Indexed: 11/29/2022]
Abstract
This work reports a novel deltamethrin (DM) sensor able to detect nano-molar concentrations in ethanol solutions. The sensing layer consists of a thin film, obtained via a layer-by-layer technique, from alternate adsorption of poly(allylamine chloride) (PAH) and poly[1-[4-(3-carboxy-4-hydroxyphenylazo)-benzenesulfonamide)-1,2-ethanediyl]sodium salt] (PAZO) onto a solid support with interdigitaded gold electrodes. The sensor response, obtained from impedance spectroscopy measurements, was revealed to be linear with respect to the real part of impedance, taken at 100 Hz, when plotted as a function of the logarithm of deltamethrin molar concentrations in the micro- to nano-molar range. Sensor sensitivity was of 41.1 ± 0.7 kΩ per decade of concentration for an immersion time above 2 min and the reproducibility is approximately 2% in a binary solution of ethanol and deltamethrin. The main insight of this work concerns to DM detection limits as the sensor revealed to be able to detect concentrations below 0.1 nM, a value which is significantly lower than any reported in the literature and close what is appropriate for in situ environmental contaminant detection.
Collapse
Affiliation(s)
| | | | | | - Maria Raposo
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +351-21-294-85-76; Fax: +351-21-294-85-49
| |
Collapse
|
39
|
CdTe Quantum Dots Embedded in Multidentate Biopolymer Based on Salep: Characterization and Optical Properties. J CHEM-NY 2013. [DOI: 10.1155/2013/202061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This paper describes a novel method for surface modification of water soluble CdTe quantum dots (QDs) by using poly(acrylic acid) grafted onto salep (salep-g-PAA) as a biopolymer. As-prepared CdTe-salep-g-PAA QDs were characterized by Fourier transform infrared (FT-IR) spectrum, thermogravimetric (TG) analysis, and transmission electron microscopy (TEM). The absorption and fluorescence emission spectra were measured to investigate the effect of salep-g-PAA biopolymer on the optical properties of CdTe QDs. The results showed that the optical properties of CdTe QDs were significantly enhanced by using salep-g-PAA-based biopolymer.
Collapse
|
40
|
Guo Y, Liang X, Wang Y, Liu Y, Zhu G, Gui W. Cyclodextrin-based molecularly imprinted polymers for the efficient recognition of pyrethroids in aqueous media. J Appl Polym Sci 2012. [DOI: 10.1002/app.38440] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
41
|
Andreu V, Picó Y. Determination of currently used pesticides in biota. Anal Bioanal Chem 2012; 404:2659-81. [PMID: 22918537 DOI: 10.1007/s00216-012-6331-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 07/16/2012] [Accepted: 08/03/2012] [Indexed: 01/06/2023]
Abstract
Although pesticides enable control of the quantity and quality of farm products and food, and help to limit diseases in humans transmitted by insects and rodents, they are regarded as among the most dangerous environmental contaminants because of their tendency to bioaccumulate, and their mobility and long-term effects on living organisms. In the past decade, more analytical methods for accurate identification and quantitative determination of traces of pesticides in biota have been developed to improve our understanding of their risk to ecosystems and humans. Because sample preparation is often the rate-determining step in analysis of pesticides in biological samples, this review first discusses extraction and clean-up procedures, after a brief introduction to the classes, and the methods used in the analysis of pesticides in biota. The analytical methods, especially chromatographic techniques and immunoassay-based methods, are reviewed in detail, and their corresponding advantages, limitations, applications, and prospects are also discussed. This review mainly covers reports published since 2008 on methods for analysis of currently used pesticides in biota.
Collapse
Affiliation(s)
- Vicente Andreu
- Centro de Investigaciones sobre Desertificación -CIDE, Moncada, Valencia, Spain
| | | |
Collapse
|
42
|
Rezanejade Bardajee G, Hooshyar Z, Rezanezhad H, Guerin G. Optical properties of water-soluble CdTe quantum dots passivated by a biopolymer based on poly((2-dimethylaminoethyl) methacrylate) grafted onto κ-carrageenan. ACS APPLIED MATERIALS & INTERFACES 2012; 4:3517-3525. [PMID: 22734610 DOI: 10.1021/am300566u] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Poly ((2-dimethylaminoethyl) methacrylate) grafted onto κ-carrageenan (κC-g-PDMA) as a biopolymer was synthesized and applied for surface modification of water-soluble CdTe quantum dots (QDs). The effects of DMA concentration, molar ratio of κC-g-PDMA/CdTe, reaction temperature and time on optical properties of CdTe QDs were investigated via fluorescent (FL) and UV- visible spectra. The results showed that the κC-g-PDMA significantly affects the optical properties of CdTe QDs. The obtained samples were characterized by Fourier transform infrared spectrum (FT-IR), thermogravimetric (TG) analysis, and transmission electron microscopy (TEM). The antibacterial activity, antifungal assays, and cytotoxicity of modified QDs were examined, and a good biocompatibility was observed.
Collapse
|