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Wu FY, Yang JL, Ye YS, Kong YQ, Wu R, Wang HY, Wang X. Polychromatic fluorescent MoS 2 quantum dots: fabrication and off-on sensing for fluorine ions in water. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:2490-2496. [PMID: 37183653 DOI: 10.1039/d3ay00346a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Recently, MoS2 quantum dots (QDs) have receive widespread attention as a promising luminescent material. However, so far, little effort has been made on the multicolor emission of MoS2 QDs. Herein, an in situ iodine doping strategy is presented and used to synthesize tunable-photoluminescent (PL) MoS2 QDs. By fine iodine doping, the PL of the MoS2 QDs (I-MoS2 QDs) can be tuned in the range from 423 nm to 529 nm, which exceeds the as-reported emission wavelength range. Studies using controlled experiments and density functional theory (DFT) reveal that the change in electronic state of MoS2 QDs is responsible for the changing PL due to iodine doping. As-synthesized I-MoS2 QDs combined with Fe3+ is developed as a "turn-off-on" fluorescence sensor for F- ions in water. The fluorescence probe has a fine linear response to F- ions in the concentration range of 2.5-80 μM, and the limit of detection is 1.4 μM (S/N = 3).
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Affiliation(s)
- Feng-Yi Wu
- Water Environment Research Center, College of Chemistry and Material Engineering, Chaohu University, Hefei 238000, China.
| | - Ji-Liang Yang
- Water Environment Research Center, College of Chemistry and Material Engineering, Chaohu University, Hefei 238000, China.
| | - You-Sheng Ye
- Water Environment Research Center, College of Chemistry and Material Engineering, Chaohu University, Hefei 238000, China.
| | - Ya-Qiong Kong
- Water Environment Research Center, College of Chemistry and Material Engineering, Chaohu University, Hefei 238000, China.
| | - Rong Wu
- Water Environment Research Center, College of Chemistry and Material Engineering, Chaohu University, Hefei 238000, China.
| | - Hai-Yan Wang
- Water Environment Research Center, College of Chemistry and Material Engineering, Chaohu University, Hefei 238000, China.
| | - Xin Wang
- Water Environment Research Center, College of Chemistry and Material Engineering, Chaohu University, Hefei 238000, China.
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2
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Kundu S, Kar P. Selective Colorimetric Sensing of Fluoride Ion in Water by 4-Quinonimine Functionalized Gold Nanoparticles. J CLUST SCI 2023. [DOI: 10.1007/s10876-023-02427-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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3
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Khatkar R, Nagpal S. Conventional and advanced detection approaches of fluoride in water: a review. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:325. [PMID: 36692796 DOI: 10.1007/s10661-022-10888-x] [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: 10/28/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Fluorine is a naturally occurring element found in soil, water, food materials, and natural minerals such as fluorapatite, sellaite, and cryolite and exists as fluoride compounds with other elements because of high reactivity. The exposure of fluoride to the environment and human beings are industrial factors, food, water, and geogenic factors that impact the health of millions of human beings worldwide. Overexposure to fluoride exceeding the permissible limit (1.5 mg/l as per WHO) causes several diseases in human beings, such as teeth mottling, thyroid inflammation, dental fluorosis, skeletal fluorosis, lesions in the kidney, and other organs. To overcome the deleterious impact of fluoride, its detection at an early stage is very much required. Therefore, feeling the importance of the same, immense efforts have been made to the selective and sensitive determination of fluoride in water by numerous researchers. This review paper summarizes the various conventional methods such as spectroscopic, ion chromatography, ICP-OES, and gas chromatography-mass spectrometry, their advantages, and drawbacks leading to the development of advanced ready-to-use detection strategies such as stamartphones for on-the-spot fluoride detection. This review paper also discusses future directions, which will assist scientists in achieving a new benchmark in developing a reliable, cost-effective, and user-friendly fluoride detector.
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Affiliation(s)
- Rahul Khatkar
- Department of Environmental Science, Indira Gandhi University, Meerpur, Rewari, Haryana, India
| | - Suman Nagpal
- Department of Environmental Science, Indira Gandhi University, Meerpur, Rewari, Haryana, India.
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4
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Simultaneous detection and removal of fluoride from water using smart metal-organic framework-based adsorbents. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214037] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kumar V. Urea/Thiourea Based Optical Sensors for Toxic Analytes: A Convenient Path for Detection of First Nerve Agent (Tabun). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200285] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Vinod Kumar
- Process Technology Development Division, Defence Research and Development Establishment, Jhansi Road, Gwalior-474002, India
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6
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Ding W, Peng L, Yun D, Gao S, Duan R, Gu Y, Wang C, Li W, Zeng X, Sun F. Aluminum-Enhanced Fluorescence of Cu8 Nanoclusters: An Effective Method for Sensitive Detection of Fluoride in Aqueous and Bioimaging. ACS APPLIED BIO MATERIALS 2020; 3:1712-1721. [DOI: 10.1021/acsabm.0c00025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Weihua Ding
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Lizhong Peng
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Damin Yun
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Sheng Gao
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Ruihong Duan
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yayun Gu
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Chengniu Wang
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Wenqing Li
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Xuhui Zeng
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Fei Sun
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, Jiangsu 226001, China
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Ngai JHL, Chang GY, Gao X, Zhou X, Hendsbee AD, Li Y. Design and synthesis of stable indigo polymer semiconductors for organic field-effect transistors with high fluoride sensitivity and selectivity. RSC Adv 2019; 9:26230-26237. [PMID: 35530989 PMCID: PMC9070390 DOI: 10.1039/c9ra04302k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 08/13/2019] [Indexed: 12/17/2022] Open
Abstract
We report the design and synthesis of two novel indigo donor-acceptor (D-A) polymers, PIDG-T-C20 and PIDG-BT-C20, comprising an indigo moiety that has intramolecular hydrogen-bonds as the acceptor building block and thiophene (T) and bithiophene (BT) as the donor building block, respectively. PIDG-T-C20 and PIDG-BT-C20 exhibited characteristic p-type semiconductor performance, achieving hole mobilities of up to 0.016 and 0.028 cm2 V-1 s-1, respectively, which are highest values reported for indigo-based polymers. The better performing PIDG-BT-C20 was used for the fabrication of water-gated organic field-effect transistors (WGOFETs), which showed excellent stability at ambient conditions. The PIDG-BT-C20-based WGOFETs exhibited rapid response when fluoride ions were introduced to the water gate dielectric, achieving a limit of detection (LOD) of 0.40 mM. On the other hand, the devices showed much lower sensitivities towards other halide ions with the order of relative response: F- ≫ Cl- > Br- > I-. The high sensitivity and selectivity of PIDG-BT-C20 to fluoride over other halides is considered to be realized through the strong interaction of the hydrogen atoms of the N-H groups in the indigo unit with fluoride ions, which alters the intramolecular hydrogen-bonding arrangement, the electronic structures, and thus the charge transport properties of the polymer.
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Affiliation(s)
- Jenner H L Ngai
- Department of Chemical Engineering, Waterloo Institute of Nanotechnology, (WIN), University of Waterloo 200 University Ave West Waterloo N2L 3G1 Canada +1-519-888-4347 +1-519-888-4567 ext. 31105
| | - George Y Chang
- Department of Chemical Engineering, Waterloo Institute of Nanotechnology, (WIN), University of Waterloo 200 University Ave West Waterloo N2L 3G1 Canada +1-519-888-4347 +1-519-888-4567 ext. 31105
| | - Xiguang Gao
- Department of Chemical Engineering, Waterloo Institute of Nanotechnology, (WIN), University of Waterloo 200 University Ave West Waterloo N2L 3G1 Canada +1-519-888-4347 +1-519-888-4567 ext. 31105
| | - Xiaocheng Zhou
- Department of Chemical Engineering, Waterloo Institute of Nanotechnology, (WIN), University of Waterloo 200 University Ave West Waterloo N2L 3G1 Canada +1-519-888-4347 +1-519-888-4567 ext. 31105
| | - Arthur D Hendsbee
- Department of Chemical Engineering, Waterloo Institute of Nanotechnology, (WIN), University of Waterloo 200 University Ave West Waterloo N2L 3G1 Canada +1-519-888-4347 +1-519-888-4567 ext. 31105
| | - Yuning Li
- Department of Chemical Engineering, Waterloo Institute of Nanotechnology, (WIN), University of Waterloo 200 University Ave West Waterloo N2L 3G1 Canada +1-519-888-4347 +1-519-888-4567 ext. 31105
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Chern M, Kays JC, Bhuckory S, Dennis AM. Sensing with photoluminescent semiconductor quantum dots. Methods Appl Fluoresc 2019; 7:012005. [PMID: 30530939 PMCID: PMC7233465 DOI: 10.1088/2050-6120/aaf6f8] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Fluorescent sensors benefit from high signal-to-noise and multiple measurement modalities, enabling a multitude of applications and flexibility of design. Semiconductor nanocrystal quantum dots (QDs) are excellent fluorophores for sensors because of their extraordinary optical properties. They have high thermal and photochemical stability compared to organic dyes or fluorescent proteins and are extremely bright due to their large molar cross-sections. In contrast to organic dyes, QD emission profiles are symmetric, with relatively narrow bandwidths. In addition, the size tunability of their emission color, which is a result of quantum confinement, make QDs exceptional emitters with high color purity from the ultra-violet to near infrared wavelength range. The role of QDs in sensors ranges from simple fluorescent tags, as used in immunoassays, to intrinsic sensors that utilize the inherent photophysical response of QDs to fluctuations in temperature, electric field, or ion concentration. In more complex configurations, QDs and biomolecular recognition moieties like antibodies are combined with a third component to modulate the optical signal via energy transfer. QDs can act as donors, acceptors, or both in energy transfer-based sensors using Förster resonance energy transfer (FRET), nanometal surface energy transfer (NSET), or charge or electron transfer. The changes in both spectral response and photoluminescent lifetimes have been successfully harnessed to produce sensitive sensors and multiplexed devices. While technical challenges related to biofunctionalization and the high cost of laboratory-grade fluorimeters have thus far prevented broad implementation of QD-based sensing in clinical or commercial settings, improvements in bioconjugation methods and detection schemes, including using simple consumer devices like cell phone cameras, are lowering the barrier to broad use of more sensitive QD-based devices.
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Affiliation(s)
- Margaret Chern
- Department of Materials Science and Engineering, Boston University, Boston, United States of America
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Lin Q, Gong GF, Fan YQ, Chen YY, Wang J, Guan XW, Liu J, Zhang YM, Yao H, Wei TB. Anion induced supramolecular polymerization: a novel approach for the ultrasensitive detection and separation of F−. Chem Commun (Camb) 2019; 55:3247-3250. [DOI: 10.1039/c8cc09876j] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel approach for the ultrasensitive detection and separation of F− has been developed. F− could induce a tripodal naphthalimide sensor (TNA) to carry out reversible supramolecular polymerization and lead to strong AIEE.
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10
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Guo Y, Li J, Chai S, Yao J. Nanomaterials for the optical detection of fluoride. NANOSCALE 2017; 9:17667-17680. [PMID: 29135001 DOI: 10.1039/c7nr05981g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Overexposure to fluoride ions (F-) causes serious diseases in human beings. Extensive efforts have been made to develop sensitive and selective approaches for F- detection and a variety of F- sensors have been constructed recently. The burgeoning nanotechnology has provided novel materials for F- analysis due to the extraordinary properties of nanomaterials. In this review, we present the recent advances in different nanomaterials-based approaches for the optical F- detection via colorimetric, fluorescent and chemiluminescent responses. The materials include gold nanomaterials, CeO2 nanoparticles, semiconductor quantum dots, carbon quantum dots, metal-organic frameworks, upconversion nanoparticles, micellar nanoparticles, polymer dots, SiO2 nanoparticles and graphene oxide. The recent trends and challenges in the optical detection of F- with various nanomaterials are also discussed.
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Affiliation(s)
- Yongming Guo
- Key Laboratory of Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
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11
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Ding C, Cao X, Zhang C, He T, Hua N, Xian Y. Rare earth ions enhanced near infrared fluorescence of Ag 2S quantum dots for the detection of fluoride ions in living cells. NANOSCALE 2017; 9:14031-14038. [PMID: 28894868 DOI: 10.1039/c7nr04436d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, a novel phenomenon was discovered that the fluorescence intensity of silver sulfide quantum dots (Ag2S QDs) could be enhanced in the presence of rare earth ions through aggregation-induced emission (AIE). Based on the strong coordination between rare earth ions and F-, a facile and label-free strategy was developed for the detection of F- in living cells. Ag2S QDs were synthesized using 3-mercaptopropionic acid as sulfur source and stabilizer in aqueous solution. The near infrared (NIR) emitting QDs exhibited excellent photostalilty, high quantum yield and low toxic. Interestingly, the fluorescence intensity of QDs was obviously enhanced upon the addition of various rare earth ions, especially in the presence of Gd3+. The AIE mechanism was proved via the TEM, zeta potential and dynamic light scattering analysis. Moreover, the coordination between rare earth ions and F- could lead to the quenching of fluorescence QDs due to the weakening the AIE. Based on these findings, we developed a highly sensitive and selective method for detection of F-. The label-free NIR fluorescence probe was successfully used for F- bioimaging in live cells.
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Affiliation(s)
- Caiping Ding
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China.
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12
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Lou Y, Zhao Y, Zhu JJ. Ultrasensitive optical detection of anions by quantum dots. NANOSCALE HORIZONS 2016; 1:125-134. [PMID: 32260634 DOI: 10.1039/c5nh00039d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Quantum dots (QDs) have received great interest for diverse applications over the past few decades due to their unique photophysical properties like their tunable band gap, facile solution processability and versatile surface functionalization with different ligands. Quantum dot based optical analysis techniques with high sensitivity and selectivity have been developed to detect anions in aqueous solution for environmental monitoring, medicinal diagnostics, and the analysis of biological samples and industrial processes. Here we review the latest research progress of semiconductor QDs for sensing of anions in aqueous solution or in vivo, and discuss the photophysical mechanisms and outlook for the potential development in QD based optical sensing for anions.
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Affiliation(s)
- Yongbing Lou
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
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13
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Boxi SS, Paria S. Fluorometric selective detection of fluoride ions in aqueous media using Ag doped CdS/ZnS core/shell nanoparticles. Dalton Trans 2016; 45:811-9. [DOI: 10.1039/c5dt04065e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a fluorometric method based on Ag–CdS/Ag–ZnS core/shell nanoparticles is developed for fluoride ion detection.
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Affiliation(s)
- Siddhartha Sankar Boxi
- Interfaces and Nanomaterials Laboratory
- Department of Chemical Engineering
- National Institute of Technology
- Rourkela 769008
- India
| | - Santanu Paria
- Interfaces and Nanomaterials Laboratory
- Department of Chemical Engineering
- National Institute of Technology
- Rourkela 769008
- India
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Appiah-Ntiamoah R, Chinnappan A, Kim H. A facile method to effectively combine plasmon enhanced fluorescence (PEF) and fluoride-Lewis acid based reactions to detect low concentrations of fluoride in solution. RSC Adv 2016. [DOI: 10.1039/c6ra13504h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synergizing the Purcell-effect of silver nanoparticles and fluoride-Lewis acid based reactions to enhance the sensitivity and detection limit of a fluoride ion chemodosimeter.
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Affiliation(s)
- Richard Appiah-Ntiamoah
- Department of Energy Science and Technology
- Smart Living Innovation Technology Center
- Myongji University
- Yongin
- Republic of Korea
| | - Amutha Chinnappan
- Center for Nanofibers and Nanotechnology
- Department of Mechanical Engineering
- National University of Singapore
- Singapore 119260
| | - Hern Kim
- Department of Energy Science and Technology
- Smart Living Innovation Technology Center
- Myongji University
- Yongin
- Republic of Korea
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Rabiee Kenaree A, Sauvé ER, Ragogna PJ, Gilroy JB. Group 6 metal pentacarbonyl complexes of air-stable primary, secondary, and tertiary ferrocenylethylphosphines. Dalton Trans 2015; 45:2859-67. [PMID: 26650447 DOI: 10.1039/c5dt03961d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The synthesis and characterization of a series of Group 6 metal pentacarbonyl complexes of air stable primary, secondary, and tertiary phosphines containing ferrocenylethyl substituents are reported [M(CO)5L: M = Cr, Mo, W; L = PH2(CH2CH2Fc), PH(CH2CH2Fc)2, P(CH2CH2Fc)3]. The structure and composition of the complexes were confirmed by multinuclear NMR spectroscopy, IR and UV-Vis absorption spectroscopy, mass spectrometry, X-ray crystallography, and elemental analysis. The solid-state structural data reported revealed trends in M-C and M-P bond lengths that mirrored those of the atomic radii of the Group 6 metals involved. UV-Vis absorption spectroscopy and cyclic voltammetry highlighted characteristics consistent with electronically isolated ferrocene units including wavelengths of maximum absorption between 435 and 441 nm and reversible one-electron (per ferrocene unit) oxidation waves between 10 and -5 mV relative to the ferrocene/ferrocenium redox couple. IR spectroscopy confirmed that the σ donating ability of the phosphines increased as ferrocenylethyl substituents were introduced and that the tertiary phosphine ligand described is a stronger σ donor than PPh3 and a weaker σ donor than PEt3, respectively.
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Affiliation(s)
- Amir Rabiee Kenaree
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond St. N., London, Ontario, Canada N6A 5B7.
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Mohapatra S, Sahu S, Nayak S, Ghosh SK. Design of Fe₃O₄@SiO₂@Carbon Quantum Dot Based Nanostructure for Fluorescence Sensing, Magnetic Separation, and Live Cell Imaging of Fluoride Ion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8111-20. [PMID: 26114840 DOI: 10.1021/acs.langmuir.5b01513] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A robust reusable fluoride sensor comprised of a receptor in charge of the chemical recognition and a fluorophore responsible for signal recognition has been designed. Highly fluorescent carbon quantum dot (CD) and magnetically separable nickel ethylenediaminetetraacetic acid (EDTA) complex bound-silica coated magnetite nanoparticle (Fe3O4@SiO2-EDTA-Ni) have been used as fluorophore and fluoride ion receptor, respectively. The assay is based on the exchange reaction between the CD and F(-), which persuades the binding of fluoride to magnetic receptor. This method is highly sensitive, fast, and selective for fluoride ion in aqueous solution. The linear response range of fluoride (R(2) = 0.992) was found to be 1-20 μM with a minimum detection limit of 0.06 μM. Excellent magnetic property and superparamagnetic nature of the receptor are advantageous for the removal and well quantification of fluoride ion. The practical utility of the method is well tested with tap water. Because of high sensitivity, reusability, effectivity, and biocompatibility, it exhibits great promise as a fluorescent probe for intracellular detection of fluoride.
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Affiliation(s)
- Sasmita Mohapatra
- †Department of Chemistry, National Institute of Technology, Rourkela, India 769008
| | - Swagatika Sahu
- †Department of Chemistry, National Institute of Technology, Rourkela, India 769008
| | - Santoshi Nayak
- ‡Department of Biotechnology, Indian Institute of Technology, Kharagpur, India 721302
| | - Sudip K Ghosh
- ‡Department of Biotechnology, Indian Institute of Technology, Kharagpur, India 721302
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Wang S, Gao Y. Chitosan films as a template for biosynthesis of cobalt sulfide nanoparticals and as sensor material for dibutyl phthalate. POLYMER SCIENCE SERIES B 2015. [DOI: 10.1134/s1560090415030100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Liu Y, Khalili Najafabadi B, Azizpoor Fard M, Corrigan JF. A Functionalized Ag2S Molecular Architecture: Facile Assembly of the Atomically Precise Ferrocene-Decorated Nanocluster [Ag74S19(dppp)6(fc(C{O}OCH2CH2S)2)18]. Angew Chem Int Ed Engl 2015; 54:4832-5. [DOI: 10.1002/anie.201411944] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 02/01/2015] [Indexed: 11/06/2022]
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Liu Y, Khalili Najafabadi B, Azizpoor Fard M, Corrigan JF. A Functionalized Ag2S Molecular Architecture: Facile Assembly of the Atomically Precise Ferrocene-Decorated Nanocluster [Ag74S19(dppp)6(fc(C{O}OCH2CH2S)2)18]. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411944] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Akshya S, Hariharan PS, Kumar VV, Anthony SP. Surface functionalized fluorescent CdS QDs: selective fluorescence switching and quenching by Cu(2+) and Hg(2+) at wide pH range. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:335-341. [PMID: 25084239 DOI: 10.1016/j.saa.2014.06.161] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 06/18/2014] [Accepted: 06/25/2014] [Indexed: 06/03/2023]
Abstract
Fluorescent CdS QDs surface functionalized with organic functional unit, N-(2-hydroxybenzyl)-cysteine (L), has been synthesized using simple wet chemical approach in a single step. The as-prepared L-CdS QDs showed good fluorescence at 542 nm. Fluorescence sensor studies of L-CdS QDs showed selective fluorescence switching (542-600 nm) for Cu(2+) ions and quenching for Hg(2+) ions in aqueous solution. High selectivity of L-CdS QDs for Cu(2+) ions have been confirmed by interference studies. Interestingly, L-CdS QDs showed enhancement in the fluorescence intensity (4-fold) upon reducing pH from 2.0 to 10.0 without changing λmax. Importantly, selective fluorescent switching and quenching for Cu(2+) and Hg(2+) was observed from 2.0 to 10.0 pH range. The practical application of L-CdS QDs fluorescence sensing for Cu(2+) and Hg(2+) have also been demonstrated in real samples such as river, pond, tap and ground water.
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Affiliation(s)
- S Akshya
- School of Chemical & Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
| | - P S Hariharan
- School of Chemical & Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
| | - V Vinod Kumar
- School of Chemical & Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
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Ghosh D, Rhodes S, Hawkins K, Winder D, Atkinson A, Ming W, Padgett C, Orvis J, Aiken K, Landge S. A simple and effective 1,2,3-triazole based “turn-on” fluorescence sensor for the detection of anions. NEW J CHEM 2015. [DOI: 10.1039/c4nj01411a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2,3-Triazole based chemosensor is synthesized using “Click chemistry” approach. Addition of fluoride ion “turn-on” the fluorescence response of probe.
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Affiliation(s)
- Debanjana Ghosh
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Shannon Rhodes
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Karena Hawkins
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | | | - Austin Atkinson
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Weihua Ming
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Clifford Padgett
- Department of Chemistry and Physics
- Armstrong Atlantic State University
- Savannah
- USA
| | - Jeffrey Orvis
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Karelle Aiken
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Shainaz Landge
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
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22
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Singh J, Singh A, Singh N. Urea based organic nanoparticles for selective determination of NADH. RSC Adv 2014. [DOI: 10.1039/c4ra10209f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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23
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Wang C, Zhou S, Xu S, Wang Z, Cui Y. Discriminative detection of bivalent Cu by dual-emission ZnSe quantum dot fluorescence sensing via ratiometric fluorescence measurements. NANOTECHNOLOGY 2014; 25:375602. [PMID: 25148543 DOI: 10.1088/0957-4484/25/37/375602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this work, we showed that 1-thioglycerol (TG)-capped ZnSe quantum dots (QDs) with dual-emission could perform ideal QD fluorescence sensing for ratiometric fluorescence measurements. By comparing the fluorescence ratios at two emission peaks before and after the addition of cations, the discriminative detection of Cu(II) was realized, even in the case of co-existing with large amounts of other sensitive cations, such as Ag(I). The discriminative detection of Cu(II) is accurate with co-existing Ag(I) below 10 μmol L(-1). By a joint investigation of the ionic diffuse dynamics and carrier recombination dynamics, we found that the adsorbed layer of QDs plays a key role in the discriminative detection of Cu(II) from Ag(I) or other sensitive cations. The moderate adsorption capacity with a QD adsorbed layer makes Cu(II) capable of travelling across the QD double-layer structure, following a surface doping process via chemical reactions between Cu(II) and the QD surface atoms. As a result of Cu(II) doping, there were three major carrier recombination channels: the non-radiation recombination between the QD conduction band to the Cu(II) energy level, together with the non-radiation recombination and radiation recombination between the trap state energy levels and the Cu(II) energy level. As for Ag(I) and other sensitive cations, they have a strong adsorption capacity with the QD adsorbed layer, making them mainly present on the adsorbed layer. Due to the blocking of the ligand layer, we only observed weak coupling of the ZnSe conduction band with the Ag(I) energy level via a non-radiation recombination channel.
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Affiliation(s)
- Chunlei Wang
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University Nanjing, 210096 People's Republic of China
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24
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25
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Zhu Y, Cui S, Chen X, Xu W, Zhou P, Wang Y, Xu L, Song H, Huang L, Huang W. Efficient energy transfer from inserted CdTe quantum dots to YVO₄:Eu³⁺ inverse opals: a novel strategy to improve and expand visible excitation of rare earth ions. NANOSCALE 2014; 6:8075-8083. [PMID: 24913251 DOI: 10.1039/c4nr01845a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Rare earth (RE)-based phosphors demonstrate sharp emission lines, long lifetimes and high luminescence quantum yields; thus, they have been employed in various photoelectric devices, such as light-emitting diodes (LEDs) and solar spectral converters. However, their applications are largely confined by their narrow excitation bands and small absorption cross sections of 4f-4f transitions. In this paper, we demonstrate a novel strategy to improve and expand the visible excitation bands of Eu(3+) ions through the interface energy transfer (ET) from CdTe quantum dots (QDs) to YVO₄:Eu(3+) inverse opal photonic crystals (IOPCs). The significant effects observed in the CdTe QDs/YVO₄:Eu(3+) IOPCs composites were that the excitation of Eu(3+) ions was continuously extended from 450 to 590 nm and that the emission intensity of the (5)D₀-(7)FJ transitions was enhanced ∼20-fold, corresponding to the intrinsic (7)F₁-(5)D₁ excitation at 538 nm. Furthermore, in the IOPC network, the ET efficiency from the QDs to YVO₄:Eu(3+) was greatly improved because of the suppression of energy migration among the CdTe QDs, which gave an optimum ET efficiency as high as 47%. Besides, the modulation of photonic stop bands (PSBs) on the radiative transition rates of the QDs and Eu(3+) ions was studied, which showed that the decay lifetime constants for Eu(3+) ions were independent of PSBs, while those of QDs demonstrated a suppression in the PSBs. Their physical nature was explained theoretically.
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Affiliation(s)
- Yongsheng Zhu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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26
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Colloidal, water soluble probes constructed with quantum dots and amphiphilic poly(ferrocenylsilane) for smart redox sensing. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.02.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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An overview of recent advances in the application of quantum dots as luminescent probes to inorganic-trace analysis. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.02.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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28
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Zhou Y, Zhang JF, Yoon J. Fluorescence and colorimetric chemosensors for fluoride-ion detection. Chem Rev 2014; 114:5511-71. [PMID: 24661114 DOI: 10.1021/cr400352m] [Citation(s) in RCA: 684] [Impact Index Per Article: 68.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ying Zhou
- Department of Chemistry and Nano Science, Ewha Womans University , Seoul 120-750, Korea
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29
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Shamsipur M, Rajabi HR. Pure zinc sulfide quantum dot as highly selective luminescent probe for determination of hazardous cyanide ion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 36:139-45. [DOI: 10.1016/j.msec.2013.12.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 11/16/2013] [Accepted: 12/02/2013] [Indexed: 10/25/2022]
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30
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Villafiorita-Monteoleone F, Daita V, Quarti C, Perdicchia D, Del Buttero P, Scavia G, Zoppo MD, Botta C. Light harvesting of CdSe/CdS quantum dots coated with β-cyclodextrin based host–guest species through resonant energy transfer from the guests. RSC Adv 2014. [DOI: 10.1039/c4ra03930k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Nano-hybrids based on red emitting QDs covered by β-cyclodextrin hosting a green emitting nitrobenzoxadiazole derivative show emission harvested by the host–guest organic system.
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Affiliation(s)
| | | | - Claudio Quarti
- Politecnico di Milano Dipartimento di Chimica
- Materiali e Ing. Chimica CMIC “G. Natta”
- Milano, Italy
| | | | | | - Guido Scavia
- Istituto per lo Studio delle Macromolecole
- CNR
- 20133 Milano, Italy
| | - Mirella del Zoppo
- Politecnico di Milano Dipartimento di Chimica
- Materiali e Ing. Chimica CMIC “G. Natta”
- Milano, Italy
| | - Chiara Botta
- Istituto per lo Studio delle Macromolecole
- CNR
- 20133 Milano, Italy
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31
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UEMATSU T, KAJI Y, TORIMOTO T, KUWABATA S. Visualization of Electrochemical Reactions by Redox-dependent Quenching of Photoluminescence from ZnS-AgInS2 Solid Solution Semiconductor Nanoparticles. ELECTROCHEMISTRY 2014. [DOI: 10.5796/electrochemistry.82.338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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32
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Kaur K, Kaur M, Kaur A, Singh J, Singh N, Mittal SK, Kaur N. Polymer-based biocompatible fluorescent sensor for nano-molar detection of Zn2+ in aqueous medium and biological samples. Inorg Chem Front 2014. [DOI: 10.1039/c3qi00031a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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33
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Ma Q, Li Y, Lin ZH, Tang G, Su XG. A novel ascorbic acid sensor based on the Fe3+/Fe2+ modulated photoluminescence of CdTe quantum dots@SiO2 nanobeads. NANOSCALE 2013; 5:9726-9731. [PMID: 24056856 DOI: 10.1039/c3nr03060a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, CdTe quantum dot (QD)@silica nanobeads were used as modulated photoluminescence (PL) sensors for the sensing of ascorbic acid in aqueous solution for the first time. The sensor was developed based on the different quenching effects of Fe(2+) and Fe(3+) on the PL intensity of the CdTe QD@ silica nanobeads. Firstly, the PL intensity of the CdTe QDs was quenched in the presence of Fe(3+). Although both Fe(2+) and Fe(3+) could quench the PL intensity of the CdTe QDs, the quenching efficiency were quite different for Fe(2+) and Fe(3+). The PL intensity of the CdTe QD@silica nanobeads can be quenched by about 15% after the addition of Fe(3+) (60 μmol L(-1)), while the PL intensity of the CdTe QD@silica nanobeads can be quenched about 49% after the addition of Fe(2+) (60 μmol L(-1)). Therefore, the PL intensity of the CdTe QD@silica nanobeads decreased significantly when Fe(3+) was reduced to Fe(2+) by ascorbic acid. To confirm the strategy of PL modulation in this sensing system, trace H2O2 was introduced to oxidize Fe(2+) to Fe(3+). As a result, the PL intensity of the CdTe QD@silica nanobeads was partly recovered. The proposed sensor could be used for ascorbic acid sensing in the concentration range of 3.33-400 μmol L(-1), with a detection limit (3σ) of 1.25 μmol L(-1) The feasibility of the proposed sensor for ascorbic acid determination in tablet samples was also studied, and satisfactory results were obtained.
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Affiliation(s)
- Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China.
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34
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Wei H, Su Y, Han Z, Li T, Ren X, Yang Z, Wei L, Cong F, Zhang Y. Zn(x)Cd(1-x)Se nanomultipods with tunable band gaps: synthesis and first-principles calculations. NANOTECHNOLOGY 2013; 24:235706. [PMID: 23673609 DOI: 10.1088/0957-4484/24/23/235706] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, we demonstrate that ZnxCd1-xSe nanomultipods can be synthesized via a facile and nontoxic solution-based method. Interesting aspects of composition, morphology and optical properties were deeply explored. The value of Zn/(Zn+Cd) could be altered across the entire range from 0.08 to 0.86 by varying the ratio of cation precursor contents. The band gap energy could be linearly tuned from 1.88 to 2.48 eV with respect to the value of Zn/(Zn+Cd). The experiment also showed that oleylamine played a dominant role in the formation of multipod structure. A possible growth mechanism was further suggested. First-principles calculations of band gap energy and density of states in the Vienna ab initio simulation package code were performed to verify the experimental variation tendency of the band gap. Computational results indicated that dissimilarities of electronic band structures and orbital constitutions determined the tunable band gap of the as-synthesized nanomultipod, which might be promising for versatile applications in relevant areas of solar cells, biomedicine, sensors, catalysts and so on.
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Affiliation(s)
- Hao Wei
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
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35
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Liu S, Shi F, Zhao X, Chen L, Su X. 3-Aminophenyl boronic acid-functionalized CuInS2 quantum dots as a near-infrared fluorescence probe for the determination of dopamine. Biosens Bioelectron 2013; 47:379-84. [PMID: 23608539 DOI: 10.1016/j.bios.2013.03.055] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 03/01/2013] [Accepted: 03/14/2013] [Indexed: 01/15/2023]
Abstract
Water-soluble CuInS2 ternary quantum dots (QDs) capped by mercaptopropionic acid were directly synthesized in aqueous solution. Consequently, the CuInS2 QDs were covalently linked to 3-aminophenyl boronic acid molecules to form the 3-aminophenyl boronic acid-functionalized CuInS2 QDs (F-CuInS2 QDs). The F-CuInS2 QDs had a fairly symmetric fluorescence emission centered at 736nm that was in the near-infrared region (NIR). The F-CuInS2 QDs containing boronic acid functional groups were reactive toward vicinal diols to form five- or six-member cyclic esters in an alkaline aqueous solution. The reaction would cause the fluorescence quenching, which could be used as a fluorescence probe for the determination of dopamine (DA). This assay could also probe other vicinal diols such as catechol, pyrogallol, and gallate, based on the fluorescence quenching of the F-CuInS2 QDs, and this assay was nearly unaffected by other phenol compounds such as phenol, resorcinol, and hydroquinone without the vicinal diol structures. The developed F-CuInS2 QDs were applied to the detection of DA in human serum samples with satisfactory results. Therefore, this experment provided a simple and sensitve NIR fluorescence probe for the detection of DA, catechol, pyrogallol, and gallate.
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Affiliation(s)
- Siyu Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
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36
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Luminescent 'On-Off' CdSe/ZnS quantum dot chemodosimeter for hydroxide based on photoinduced electron transfer from a carboxylate moiety. J Fluoresc 2013; 23:793-8. [PMID: 23504217 DOI: 10.1007/s10895-013-1212-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Accepted: 03/04/2013] [Indexed: 10/27/2022]
Abstract
A CdSe-ZnS quantum dot (QD) has been surface functionalised by a place exchange reaction with p-mercaptomethyl benzoate synthesized by a three-step procedure. The resulting lumophore-spacer-receptor QD-conjugate was characterized by IR, UV-visible and fluorescence spectroscopy. The emission profile of the QD reveals a narrow emission peak centred at 542 nm. Addition of hydroxide to the solution containing the QD-conjugate results in quenching of the original fluorescence, which is attributed to a photoinduced electron transfer reaction from the electron-rich benzoate moiety to the QD valence band. This is the first reported example of fluorescent quenching of a CdSe-ZnS QD luminescence by an aryl carboxylate moiety.
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37
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Paramanik B, Bhattacharyya S, Patra A. Detection of Hg2+and F−Ions by Using Fluorescence Switching of Quantum Dots in an Au-Cluster-CdTe QD Nanocomposite. Chemistry 2013; 19:5980-7. [DOI: 10.1002/chem.201203576] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Indexed: 12/14/2022]
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38
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Liu S, Hu J, Su X. Detection of ascorbic acid and folic acid based on water-soluble CuInS2 quantum dots. Analyst 2013; 137:4598-604. [PMID: 22898753 DOI: 10.1039/c2an35908a] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, water-soluble CuInS(2) ternary quantum dots (QDs) modified by mercaptopropionic acid (MPA) were directly synthesized by hydrothermal method. Ascorbic acid (AA) can induce the fluorescence enhancement of MPA-capped CuInS(2) QDs and can be used for the detection of AA. Under the optimized conditions, the relationship between the fluorescence intensity of the CuInS(2) QDs and AA concentration was linear in the range of 0.25-200 μmol L(-1). Most relevant molecules and physiological ions had no effect on the detection of AA. The fluorescence intensity of CuInS(2) QDs enhanced by a certain amount of AA could be reduced in the presence of folic acid (FA) and thus can be used for the detection of FA with the linear range of 0.2-100 μmol L(-1). Compared with previous reports, the established approach utilized a simple, sensitive, and selective strategy to develop the QDs probe based on fluorescence enhancing and quenching phenomena without complicated immobilization.
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Affiliation(s)
- Siyu Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
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39
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Sharma D, Sahoo SK, Chaudhary S, Bera RK, Callan JF. Fluorescence ‘turn-on’ sensor for F− derived from vitamin B6 cofactor. Analyst 2013; 138:3646-50. [DOI: 10.1039/c3an00199g] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Kaur A, Sharma H, Kaur S, Singh N, Kaur N. A counterion displacement assay with a Biginelli product: a ratiometric sensor for Hg2+ and the resultant complex as a sensor for Cl−. RSC Adv 2013. [DOI: 10.1039/c3ra40236c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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41
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Zhang Y, Liu JM, Yan XP. Self-assembly of folate onto polyethyleneimine-coated CdS/ZnS quantum dots for targeted turn-on fluorescence imaging of folate receptor overexpressed cancer cells. Anal Chem 2012. [PMID: 23194289 DOI: 10.1021/ac3025653] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Folate receptor (FR) can be overexpressed by a number of epithelial-derived tumors, but minimally expressed in normal tissues. As folic acid (FA) is a high-affinity ligand to FR, and not produced endogenously, development of FA-conjugated probes for targeted imaging FR overexpressed cancer cells is of significance for assessing cancer therapeutics and for better understanding the expression profile of FR in cancer. Here we report a novel turn-on fluorescence probe for imaging FR overexpressed cancer cells. The probe was easily fabricated via electrostatic self-assembly of FA and polyethyleneimine-coated CdS/ZnS quantum dots (PEI-CdS/ZnS QDs). The primary fluorescence of PEI-CdS/ZnS QDs turned off first upon the electrostatic adsorption of FA onto PEI-CdS/ZnS QDs based on electron transfer to produce negligible fluorescence background. The presence of FR expressed on the surface of cancer cells then made FA desorb from PEI-CdS/ZnS QDs due to specific and high affinity of FA to FR. As a result, the primary fluorescence of PEI-CdS/ZnS QDs adhering to the cells turned on due to the inhibition of electron transfer. The most important merits of the developed probe are its simplicity and the effective avoidance of the false positive results due to the simple electrostatic self-assembly of FA onto the surface of PEI-CdS/ZnS QDs and the involved fluorescence "off-on" mechanism. The probe was demonstrated to be sensitive and selective for targeted imaging of FR overexpressed cancer cells in turn-on mode.
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Affiliation(s)
- Yi Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Chemistry, Nankai University, Tianjin, China
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42
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Opperwall SR, Divakaran A, Porter EG, Christians JA, Denhartigh AJ, Benson DE. Wide dynamic range sensing with single quantum dot biosensors. ACS NANO 2012; 6:8078-8086. [PMID: 22924857 DOI: 10.1021/nn303347k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Single-particle analysis of biosensors that use charge transfer as the means for analyte-dependent signaling with semiconductor nanoparticles, or quantum dots, was examined. Single-particle analysis of biosensors that use energy transfer show analyte-dependent switching of nanoparticle emission from off to on. The charge-transfer-based biosensors reported here show constant emission, where the analyte (maltose) increases the emission intensity. By monitoring the same nanoparticles under various conditions, a single charge-transfer-based biosensor construct (one maltose binding protein, one protein attachment position for the reductant, one type of nanoparticle) showed a dynamic range for analyte (maltose) detection spanning from 100 pM to 10 μM while the emission intensities increase from 25 to 175% at the single-particle level. Since these biosensors were immobilized, the correlation between the detected maltose concentration and the maltose-dependent emission intensity increase could be examined. Minimal correlation between maltose detection limits and emission increases was observed, suggesting a variety of reductant-nanoparticle surface interactions that control maltose-dependent emission intensity responses. Despite the heterogeneous responses, monitoring biosensor emission intensity over 5 min provided a quantifiable method to monitor maltose concentration. Immobilizing and tracking these biosensors with heterogeneous responses, however, expanded the analyte-dependent emission intensity and the analyte dynamic range obtained from a single construct. Given the wide dynamic range and constant emission of charge-transfer-based biosensors, applying these single molecule techniques could provide ultrasensitive, real-time detection of small molecules in living cells.
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Affiliation(s)
- Stacey R Opperwall
- Department of Chemistry & Biochemisty, Calvin College, 1726 Knollcrest Circle SE, Grand Rapids, Michigan 49546, United States
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43
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Hong J, Pei D, Guo X. Quantum dot-Eu3+ conjugate as a luminescence turn-on sensor for ultrasensitive detection of nucleoside triphosphates. Talanta 2012; 99:939-43. [PMID: 22967646 DOI: 10.1016/j.talanta.2012.07.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 07/22/2012] [Accepted: 07/25/2012] [Indexed: 11/30/2022]
Abstract
We report a conjugate of thioglycolic acid (TGA) capped CdTe quantum dot and Eu(3+) ion (TGA-CdTe QD-Eu(3+)) that can be used as an ultrasensitive luminescence turn-on sensor for nucleoside triphosphates (NTPs). The TGA-CdTe QD-Eu(3+) conjugate is a weakly luminescent species as a result of the strong quenching effect of Eu(3+) ion on the luminescence of TGA-CdTe QDs. The conjugate's luminescence can be readily restored by its reaction with adenosine triphosphate (ATP) and other NTPs, and thus gives an ultrasensitive detection of NTPs, with a detection limit of 2 nM. The sensing mechanism has also been explored, and the effective quenching of TGA-CdTe QDs emission by Eu(3+) ions has been attributed to photoinduced electron transfer (PET). ATP, as the representative of NTPs, can remove Eu(3+) from the surface of TGA-CdTe QDs, leading to restoration of the TGA-CdTe QDs luminescence.
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Affiliation(s)
- Jinqing Hong
- The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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44
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Saleh SM, Ali R, Wolfbeis OS. Quenching of the Luminescence of Upconverting Luminescent Nanoparticles by Heavy Metal Ions. Chemistry 2011; 17:14611-7. [DOI: 10.1002/chem.201101860] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 08/06/2011] [Indexed: 12/21/2022]
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Abstract
As a unique nanomaterial, quantum dots (QDs) are not only applied in fluorescent labeling and biological imaging, but are also utilized in novel sensing systems. Because QDs have attractive optoelectronic characteristics, QD-based sensors present high sensitivity in detecting specific analytes in the chemical and biochemical fields. In this review, we describe the basic principles and different conjugation strategies in QD-based sensors. An overview of recent advances and various models of QD-sensing systems is also provided. Furthermore, perspectives for sensors based on QDs are discussed.
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Affiliation(s)
- Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
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46
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Facile synthesis of N-acetyl-l-cysteine capped ZnS quantum dots as an eco-friendly fluorescence sensor for Hg2+. Talanta 2011; 85:1738-43. [DOI: 10.1016/j.talanta.2011.06.071] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 06/24/2011] [Accepted: 06/27/2011] [Indexed: 11/20/2022]
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47
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Amelia M, Impellizzeri S, Monaco S, Yildiz I, Silvi S, Raymo FM, Credi A. Structural and Size Effects on the Spectroscopic and Redox Properties of CdSe Nanocrystals in Solution: The Role of Defect States. Chemphyschem 2011; 12:2280-8. [DOI: 10.1002/cphc.201100300] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Indexed: 11/10/2022]
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48
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Singh N, Jang DO. Tetrapodal receptors for selective fluorescent sensing of AMP: analyte-induced conformational restriction to persuade fluorescence enhancement. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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49
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Ferrocene-Based Trimethylsilyl Chalcogenide Reagents for the Assembly of Functionalized Metal-Chalcogen Architectures. Chemistry 2011; 17:5890-902. [DOI: 10.1002/chem.201003756] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Indexed: 11/07/2022]
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50
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Dezhurov SV, Volkova IY, Wakstein MS. FRET-Based Biosensor for Oleic Acid in Nanomolar Range with Quantum Dots As an Energy Donor. Bioconjug Chem 2011; 22:338-45. [DOI: 10.1021/bc100133u] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Irina Y. Volkova
- Applied Acoustics Research Institute, Moskow region, Dubna, Russia
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