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Le Bars M, Levard C, Legros S, Vidal V, Fernandez-Martinez A, Michel FM, Thill A, Prelot B, Dublet-Adli G, Borschneck D, Rose J, Doelsch E. Size and Strain of Zinc Sulfide Nanoparticles Altered by Interaction with Organic Molecules. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:16831-16837. [PMID: 36394535 DOI: 10.1021/acs.est.2c05268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Nanosized zinc sulfides (nano-ZnS) have size-dependent and tunable physical and chemical properties that make them useful for a variety of technological applications. For example, structural changes, especially caused by strain, are pronounced in nano-ZnS < 5 nm in size, the size range typical of incidental nano-ZnS that form in the environment. Previous research has shown how natural organic matter impacts the physical properties of nano-ZnS but was mostly focused on their aggregation state. However, the specific organic molecules and the type of functional groups that are most important for controlling the nano-ZnS size and strain remain unclear. This study examined the size-dependent strain of nano-ZnS synthesized in the presence of serine, cysteine, glutathione, histidine, and acetate. Synchrotron total scattering pair distribution function analysis was used to determine the average crystallite size and strain. Among the different organic molecules tested, those containing a thiol group were shown to affect the particle size and size-induced strain most strongly when added during synthesis but significantly reduced the particle strain when added to as-formed nano-ZnS. The same effects are useful to understand the properties and behavior of natural nano-ZnS formed as products of microbial activity, for example, in reducing environments, or of incidental nano-ZnS formed in organic wastes.
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Affiliation(s)
- Maureen Le Bars
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence13545, France
- UPR Recyclage et Risque, CIRAD, Montpellier, France
- Recyclage et Risque, Univ. Montpellier, CIRAD, MontpellierF-34398, France
| | - Clément Levard
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence13545, France
| | - Samuel Legros
- UPR Recyclage et Risque, CIRAD, Montpellier, France
- Recyclage et Risque, Univ. Montpellier, CIRAD, MontpellierF-34398, France
| | - Vladimir Vidal
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence13545, France
| | | | - F Marc Michel
- Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia24061, United States
| | - Antoine Thill
- NIMBE, UMR 3685 CEA, CNRS, Université Paris-Saclay, CEA Saclay, Gif-sur-Yvette Cedex91191, France
| | | | | | - Daniel Borschneck
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence13545, France
| | - Jérôme Rose
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence13545, France
| | - Emmanuel Doelsch
- UPR Recyclage et Risque, CIRAD, Montpellier, France
- Recyclage et Risque, Univ. Montpellier, CIRAD, MontpellierF-34398, France
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Gupta AD, Gupta A, Reyes-Calderón A, Merupo VI, Kalita G, Herrera-Celis J, Chandra N, Sharma A, Ramirez JT, Arriaga LG, Oza G. Biological Synthesis of PbS, As 3S 4, HgS, CdS Nanoparticles using Pseudomonas aeruginosa and their Structural, Morphological, Photoluminescence as well as Whole Cell Protein Profiling Studies. J Fluoresc 2021; 31:1445-1459. [PMID: 34268653 DOI: 10.1007/s10895-021-02769-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/30/2021] [Indexed: 10/20/2022]
Abstract
Metal sulfide nanoparticles are semi-conductors that possess many applications in optics, optoelectronics and magnetic devices. There are physical and chemical methods for their synthesis but such methods involve toxic precursors as well as many obnoxious by-products. Hence, biological synthesis of metal sulfide nanoparticles are efficient enough to transform toxic metals to non-toxic ones. Pseudomonas aeruginosa, isolated from textile effluent and tolerant of high levels of heavy metals, was used for the green synthesis of metal sulfide (HgS, As3S4, CdS and PbS) nanoparticles. The optical, structural and morphological nature of metal sulfide nanoparticles was also determined. FTIR (Fourier Transform Infra-red) analysis showed spectral changes when P. aeruginosa was grown in medium containing heavy metals viz. Hg, As, Pb and Cd indicating that there are functional groups viz. carboxyl, hydroxyl, phosphate, amino and amide, that exists on the surface of the bacteria, thus facilitating binding of metals on its surface. The bacterial samples which were treated with different metals at different concentrations, were subjected to whole cell protein analysis using SDS-PAGE (Sodium dodecyl Sulphate- Polyacrylamide gel electrophoresis) and protein profiling. The total protein estimation revealed that there was an increase in the protein concentration in the presence of heavy metals and a significant change in the banding pattern was observed which showed induction of a set of proteins under heavy metal stress especially mercury.
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Affiliation(s)
- Annika Durve Gupta
- Department of Biotechnology, Birla College of Arts, Science and Commerce, Thane Dist, Kalyan, MS, India.
| | - Arvind Gupta
- Bioxia, H-7 Rajlakshmi complex khaler Bhiwandi Thane, Bhiwandi, India
| | - Almendra Reyes-Calderón
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Queretaro, Av. Epigmenio González Fracc. San Pablo, No. 500, 76130, Queretaro, Mexico
| | - Victor Ishrayelu Merupo
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Golap Kalita
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya, Japan
| | - Jośe Herrera-Celis
- Laboratorio Nacional de Micro Y Nanofluidica (LABMyN), Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ), Queretaro, 76703, México
| | - Naresh Chandra
- Department of Biotechnology, Birla College of Arts, Science and Commerce, Thane Dist, Kalyan, MS, India
| | - Ashutosh Sharma
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Queretaro, Av. Epigmenio González Fracc. San Pablo, No. 500, 76130, Queretaro, Mexico
| | - Jose Tapia Ramirez
- Department of Genetics and Molecular Biology, Centro de Investigación Y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAVIPN), 0730, Mexico City, Mexico
| | - L G Arriaga
- Laboratorio Nacional de Micro Y Nanofluidica (LABMyN), Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ), Queretaro, 76703, México
| | - Goldie Oza
- Laboratorio Nacional de Micro Y Nanofluidica (LABMyN), Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ), Queretaro, 76703, México.
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Atanasova P, Kim I, Chen B, Eiben S, Bill J. Controllable Virus-Directed Synthesis of Nanostructured Hybrids Induced by Organic/Inorganic Interactions. ACTA ACUST UNITED AC 2017; 1:e1700106. [DOI: 10.1002/adbi.201700106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/06/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Petia Atanasova
- Institute for Materials Science; Universität Stuttgart; Heisenbergstr. 3 70569 Stuttgart Germany
| | - Insook Kim
- Max-Planck Institute for Intelligent Systems; Heisenbergstr. 3 70569 Stuttgart Germany
| | - Bingling Chen
- ALPLA Werke Alwin Lehner GmbH & Co KG Mockenstrasse 34; A-6971 Hard Austria
| | - Sabine Eiben
- Institute of Biomaterials and Biological Systems; Universität Stuttgart; Pfaffenwaldring 57 70569 Stuttgart Germany
| | - Joachim Bill
- Institute for Materials Science; Universität Stuttgart; Heisenbergstr. 3 70569 Stuttgart Germany
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Arvand M, Mirroshandel AA. Fluorescent nanochemosensor for direct optosensing of butachlor based on l-cysteine-capped ZnS quantum dots. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1165-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dzade NY, Roldan A, de Leeuw NH. Surface and shape modification of mackinawite (FeS) nanocrystals by cysteine adsorption: a first-principles DFT-D2 study. Phys Chem Chem Phys 2016; 18:32007-32020. [DOI: 10.1039/c6cp05913a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The surface and shape modulation of mackinawite (FeS) nanoparticles by amino acid cysteine adsorption is investigated using a first-principles density functional theory calculations, corrected for dispersion-interactions (DFT-D2).
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Affiliation(s)
- N. Y. Dzade
- Department of Earth Sciences
- Utrecht University
- Utrecht
- The Netherlands
| | - A. Roldan
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - N. H. de Leeuw
- Department of Earth Sciences
- Utrecht University
- Utrecht
- The Netherlands
- School of Chemistry
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Liang Z, Mu J, Mu Y, Shi J, Hao W, Dong X, Yu H. Interface-mediated synthesis of monodisperse ZnS nanoparticles with sulfate-reducing bacterium culture. J Environ Sci (China) 2013; 25 Suppl 1:S106-S109. [PMID: 25078810 DOI: 10.1016/s1001-0742(14)60637-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have created a new method of ZnS nanospheres synthesis. By interface-mediated precipitation method (IMPM), monodisperse ZnS nanoparticles was synthesized on the particle surface of sulfate-reducing bacterium nutritious agar culture. Sulfate-reducing bacterium (SRB) was used as a sulfide producer because of its dissimilatory sulfate reduction capability, meanwhile produced a variety of amino acids acting as templates for nanomaterials synthesis. Then zinc acetate was dispersed into nutritious agar plate. Subsequently agar plate was broken into particles bearing much external surface, which successfully mediated the synthesis of monodisperse ZnS nanoparticles. The morphology of monodisperse ZnS nanospheres and SRB were examined by scanning electron microscopy (SEM), and the microstructure was investigated by X-ray diffraction (XRD). The thermostability of ZnS nanoparticles was determined by thermo gravimetric-differential thermo gravimetric (TG-DTG). The maximum absorption wavelengh was analysed with an ultraviolet-visible spectrophotometer within a range of 199-700 nm. As a result, monodisperse ZnS nanoparticles were successfully synthesized, with an average diameter of 80 nm. Maximum absorption wavelengh was 228 nm, and heat decomposed temperature of monodisperse ZnS nanoparticles was 596°C.
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Affiliation(s)
- Zhanguo Liang
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
| | - Jun Mu
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
| | - Ying Mu
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Jiaming Shi
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Wenjing Hao
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Xuewei Dong
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
| | - Hongquan Yu
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
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7
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Xu J, Ruchala P, Ebenstain Y, Li JJ, Weiss S. Stable, compact, bright biofunctional quantum dots with improved peptide coating. J Phys Chem B 2012; 116:11370-8. [PMID: 22900542 PMCID: PMC3470653 DOI: 10.1021/jp306453y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We developed a new peptide, natural phytochelatin (PC), which tightly binds to CdSe/ZnS quantum dots' (QDs) surfaces and renders them water-soluble. Coating QDs with this flexible and all-hydrophilic peptide offers high colloidal stability, adds only 0.8-0.9 nm to the radius of the particles (as compared to their original inorganic radius), preserves very high quantum yield (QY) in water, and affords facile bioconjugation with various functional groups. We demonstrate specific targeting (with minimal nonspecific binding) of such fluorescein-conjugated QDs to ScFv-fused mouse prion protein expressed in live N2A cells. We also demonstrated homogeneous in vivo biodistribution with no significant toxicity in live zebrafish.
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Affiliation(s)
- Jianmin Xu
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
| | - Piotr Ruchala
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles CA 90095
| | - Yuval Ebenstain
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
| | - Jack J. Li
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
| | - Shimon Weiss
- Dept. of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles CA 90095
- Dept. of Physiology, University of California Los Angeles, Los Angeles CA 90095
- California NanoSystems Institute, University of California Los Angeles, Los Angeles CA 90095
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8
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Kozák O, Praus P, Kočí K, Klementová M. Preparation and characterization of ZnS nanoparticles deposited on montmorillonite. J Colloid Interface Sci 2010; 352:244-51. [DOI: 10.1016/j.jcis.2010.09.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 09/02/2010] [Accepted: 09/06/2010] [Indexed: 10/19/2022]
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9
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Leitão JM, Gonçalves H, Mendonça C, Esteves da Silva JC. Multiway chemometric decomposition of EEM of fluorescence of CdTe quantum dots obtained as function of pH. Anal Chim Acta 2008; 628:143-54. [DOI: 10.1016/j.aca.2008.09.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Revised: 09/04/2008] [Accepted: 09/05/2008] [Indexed: 10/21/2022]
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10
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Iyer G, Pinaud F, Tsay J, Weiss S. Solubilization of quantum dots with a recombinant peptide from Escherichia coli. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2007; 3:793-8. [PMID: 17393550 PMCID: PMC3081612 DOI: 10.1002/smll.200600516] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Affiliation(s)
- Gopal Iyer
- Department of Chemistry & Biochemistry, University of California at Los Angeles, 607 Charles E. Young Drive E., Los Angeles, CA 90095 (USA)
| | - Fabien Pinaud
- Department of Chemistry & Biochemistry, University of California at Los Angeles, 607 Charles E. Young Drive E., Los Angeles, CA 90095 (USA)
| | - James Tsay
- Department of Chemistry & Biochemistry, University of California at Los Angeles, 607 Charles E. Young Drive E., Los Angeles, CA 90095 (USA)
| | - Shimon Weiss
- Department of Chemistry & Biochemistry, University of California at Los Angeles, 607 Charles E. Young Drive E., Los Angeles, CA 90095 (USA)
- California NanoSystems Institute, University of California at Los Angeles, 607 Charles E. Young Drive E., Los Angeles, CA 90095 (USA)
- Department of Physiology, University of California at Los Angeles, 607 Charles E. Young Drive E., Los Angeles, CA 90095 (USA)
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11
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Wu Q, Cao H, Zhang S, Zhang X, Rabinovich D. Generation and Optical Properties of Monodisperse Wurtzite-Type ZnS Microspheres. Inorg Chem 2006; 45:7316-22. [PMID: 16933933 DOI: 10.1021/ic060936u] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Monodisperse wurtzite-type ZnS microspheres have been prepared by using glutathione (GSH) as a sulfur source at low reaction temperatures ranging from 160 to 210 degrees C. The diameter of the ZnS microspheres can be tuned from approximately 254 to approximately 597 nm by changing the reaction parameters such as temperature, molar ratio of reactants (GSH/Zn2+), and reaction medium (ethylenediamine or ammonia). Our results demonstrate that monodentate amines (ammonia) play the same role as that of bidentate amines (ethylenediamine) in the formation of the wurtzite-type ZnS microspheres. The formation process of the monodisperse ZnS microspheres consists of a GSH-dominated nucleation process and an amine-dominated assembly process. The as-synthesized monodisperse ZnS microspheres readily self-assemble into ordered hexagonal patterns and thus have potential applications as colloidal crystalline materials. Blue fluorescence emission peaks at 415 and 466 nm in wavelength, attributed to deep-trap emission, are observed at room temperature.
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Affiliation(s)
- Qingzhi Wu
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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12
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Michalet X, Pinaud FF, Bentolila LA, Tsay JM, Doose S, Li JJ, Iyer G, Weiss S. Peptide-coated semiconductor nanocrystals for biomedical applications. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2005; 5704:10.1117/12.589498. [PMID: 29176922 PMCID: PMC5701801 DOI: 10.1117/12.589498] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
We have developed a new functionalization approach for semiconductor nanocrystals based on a single-step exchange of surface ligands with custom-designed peptides. This peptide-coating technique yield small, monodisperse and very stable water-soluble NCs that remain bright and photostable. We have used this approach on several types of core and core-shell NCs in the visible and near-infrared spectrum range and used fluorescence correlation spectroscopy for rapid assessment of the colloidal and photophysical properties of the resulting particles. This peptide coating strategy has several advantages: it yields probes that are immediately biocompatible; it is amenable to improvements of the different properties (solubilization, functionalization, etc) via rational design, parallel synthesis, or molecular evolution; it permits the combination of several functions on individual NCs. These functionalized NCs have been used for diverse biomedical applications. Two are discussed here: single-particle tracking of membrane receptor in live cells and combined fluorescence and PET imaging of targeted delivery in live animals.
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Affiliation(s)
- X Michalet
- Dpt of Chemistry & Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095
| | - F F Pinaud
- Dpt of Chemistry & Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095
| | - L A Bentolila
- Dpt of Chemistry & Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095
| | - J M Tsay
- Dpt of Chemistry & Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095
| | - S Doose
- Applied Laserphysics & Laserspectroscopy, University of Bielefeld 33615 Bielefeld, Germany
| | - J J Li
- Dpt of Chemistry & Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095
| | - G Iyer
- Dpt of Chemistry & Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095
| | - S Weiss
- Dpt of Chemistry & Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095
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Sweeney RY, Mao C, Gao X, Burt JL, Belcher AM, Georgiou G, Iverson BL. Bacterial Biosynthesis of Cadmium Sulfide Nanocrystals. ACTA ACUST UNITED AC 2004; 11:1553-9. [PMID: 15556006 DOI: 10.1016/j.chembiol.2004.08.022] [Citation(s) in RCA: 208] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2004] [Revised: 08/26/2004] [Accepted: 08/31/2004] [Indexed: 11/16/2022]
Abstract
Semiconductor nanocrystals, which have unique optical and electronic properties, have potential for applications in the emerging field of nanoelectronics. To produce nanocrystals cheaply and efficiently, biological methods of synthesis are being explored. We found that E. coli, when incubated with cadmium chloride and sodium sulfide, have the capacity to synthesize intracellular cadmium sulfide (CdS) nanocrystals. The nanocrystals are composed of a wurtzite crystal phase with a size distribution of 2-5 nm. Nanocrystal biosynthesis increased about 20-fold in E. coli cells grown to stationary phase compared to late logarithmic phase. Our results highlight how different genetic and physiological parameters can enhance the formation of nanocrystals within bacterial cells.
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Affiliation(s)
- Rozamond Y Sweeney
- Institute for Cellular and Molecular Biology, University of Texas, Austin, TX 78712, USA
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14
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Pinaud F, King D, Moore HP, Weiss S. Bioactivation and cell targeting of semiconductor CdSe/ZnS nanocrystals with phytochelatin-related peptides. J Am Chem Soc 2004; 126:6115-23. [PMID: 15137777 PMCID: PMC5715196 DOI: 10.1021/ja031691c] [Citation(s) in RCA: 492] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Synthetic phytochelatin-related peptides are used as an organic coat on the surface of colloidal CdSe/ZnS semiconductor nanocrystals synthesized from hydrophobic coordinating trioctyl phosphine oxide (TOPO) solvents. The peptides are designed to bind to the nanocrystals via a C-terminal adhesive domain. This adhesive domain, composed of multiple repeats of cysteines pairs flanked by hydrophobic 3-cyclohexylalanines, is followed by a flexible hydrophilic linker domain to which various bio-affinity tags can be attached. This surface coating chemistry results in small, buffer soluble, monodisperse peptide-coated nanoparticles with high colloidal stability and ensemble photophysical properties similar to those of TOPO-coated nanocrystals. Various peptide coatings are used to modulate the nanocrystal surface properties and to bioactivate the nanoparticles. CdSe/ZnS nanocrystals coated with biotinylated peptides efficiently bind to streptavidin and are specifically targeted to GPI-anchored avidin-CD14 chimeric proteins expressed on the membranes of live HeLa cells. This peptide coating surface chemistry provides a novel approach for the production of biocompatible photoluminescent nanocrystal probes.
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Affiliation(s)
- Fabien Pinaud
- Department of Chemistry & Biochemistry, University of California Los Angeles, Los Angeles, California 90095, USA.
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16
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Gelinsky M, Vogler R, Vahrenkamp H. Zinc complexation of glutathione and glutathione-derived peptides. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01320-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Niemeyer CM. Nanoparticles, Proteins, and Nucleic Acids: Biotechnology Meets Materials Science. Angew Chem Int Ed Engl 2001; 40:4128-4158. [DOI: 10.1002/1521-3773(20011119)40:22<4128::aid-anie4128>3.0.co;2-s] [Citation(s) in RCA: 2006] [Impact Index Per Article: 87.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2001] [Indexed: 01/04/2023]
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20
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Torres-Martínez CL, Kho R, Mian OI, Mehra RK. Efficient Photocatalytic Degradation of Environmental Pollutants with Mass-Produced ZnS Nanocrystals. J Colloid Interface Sci 2001; 240:525-532. [PMID: 11482961 DOI: 10.1006/jcis.2001.7684] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Photocatalytic degradation of water pollutants using nanometersized semiconductor colloids is an emerging area of environmental remediation. The synthesis of semiconductor nanocrystals (NCs), however, can be costly and result in low product yields. For large-scale photocatalytic application in environmental remediation, cost-effective production of the semiconductor NCs would be ideal. Demonstrated in this report is the efficient photocatalytic degradation of p-nitrophenol (pNP) and Acid Orange 7 (AO7) using ZnS nanocrystals ( approximately 3 to 5 nm diameter) produced in gram quantities with >50% product yield. The pNP half-life in ZnS nanocrystal photocatalyzed reactions was about 1.95 to 2.45 min, whereas in comparable TiO(2) reactions, the pNP half-lives were in the range of 12 to 15 min. Absorption spectra of the photocatalysis reactions suggested the decolorization of pNP without any noticeable formation of phenolic intermediates, implying a mechanism that involves a pNP ring opening via a radical mediated attack. Likewise, the degradation of AO7 was suggested to occur via an oxidative pathway involving hydroxyl radicals formed at the photocatalyst/liquid interface. Optimum conditions for AO7 degradation such as pH, photocatalyst-to-AO7 ratio, and photocatalyst surface passivation were similar to those for pNP. By demonstrating efficient mineralization of these model pollutants using mass-produced ZnS nanocrystals, we hope to lay the foundations necessary for development of large-scale, field-applicable systems. Copyright 2001 Academic Press.
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Affiliation(s)
- Claudia L. Torres-Martínez
- Environmental Toxicology Graduate Program, Department of Neuroscience, Boyce Hall, University of California-Riverside, Riverside, California, 92521
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21
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Kho R, Torres-Martínez CL, Mehra RK. A Simple Colloidal Synthesis for Gram-Quantity Production of Water-Soluble ZnS Nanocrystal Powders. J Colloid Interface Sci 2000; 227:561-566. [PMID: 10873346 DOI: 10.1006/jcis.2000.6894] [Citation(s) in RCA: 115] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A simple, inexpensive, and reproducible procedure is described for large-scale synthesis of highly stable nanocrystalline ZnS powders. Cysteine-capped ZnS nanocrystals (NCs) were produced by a colloidal aqueous synthesis, employing a ligand-competition mechanism in which sulfide was introduced into a preformed zinc-cysteine solution. The synthesis procedure resulted in highly concentrated ZnS NC solutions ( approximately 100 mM) which could be ethanol-precipitated, redissolved, and dried to produce fine powders stable for more than 30 months at 4 degrees C. The NC powders were readily dissolved in aqueous solvents to concentrations as high as 300 mM. ZnS NCs could be prepared without cysteine capping, but only at extremely dilute concentrations ( approximately 0.2 mM ZnSO(4)) as per Sooklal et al. J. Phys. Chem. 100, 4551 (1996). The 30-month-old ZnS NC powders retained their original optical and photocatalytic properties and could be handled much like routine shelf chemicals, unaffected by ambient air or moderate moisture and temperature. UV/vis absorption spectroscopy showed band gap energies (E(g)) ranging from 4.82 eV (257 nm lambda(max)) to 4.47 eV (277 nm lambda(max)) for ZnS samples prepared with 0.25-2.0 initial sulfide ratios (as compared to zinc). Samples stored at 4 degrees C for 30 months showed equivalent band gap energies and spectral profiles. The average NC particle size was estimated to be 6.08+/-0.76 nm by high-resolution transmission electron microscopy. Selected-area electron diffraction and X-ray diffraction analyses concurred in suggesting a hexagonal crystal structure, with diffractions near d=3.1, 1.9, and 1.6 Å. The average NC composition of size-fractionated samples was estimated to be Cys(1)Zn(7)S(6). p-Nitrophenol, a model organic, was photocatalytically degraded using 30-month-old ZnS NC powders dissolved in an aqueous buffer. Rates of degradation (first-order rate constant k=0.261 min(-1); t(1/2)=2.66 min) were comparable to those of experiments using freshly prepared ZnS NCs (first-order rate constant k=0.247 min(-1); t(1/2)=2.80 min), further demonstrating the long-term stability of thus-produced NC powders. Copyright 2000 Academic Press.
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Affiliation(s)
- R Kho
- Environmental Toxicology Graduate Program, Department of Neuroscience, University of California, Riverside, California, 92521
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Kho R, Nguyen L, Torres-Martínez CL, Mehra RK. Zinc-histidine as nucleation centers for growth of ZnS nanocrystals. Biochem Biophys Res Commun 2000; 272:29-35. [PMID: 10872799 DOI: 10.1006/bbrc.2000.2712] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Histidine is a chelator of zinc, most notably in zinc-finger proteins (zinc coordinated by cysteine and histidine) and in hyperaccumulator plants. Sulfide incorporation into molecules containing metal-cysteinyl complexes has been shown to occur in vivo in certain yeasts, leading to enhanced metal tolerance. Demonstrated here for the first time is incorporation of sulfide into zinc-histidine, resulting in histidine-ZnS nanocrystals (NCs) having unique optical properties. Sulfide complexation occurred optimally at alkaline pH into zinc-(histidine)2 species, and UV/Vis absorption maxima were red-shifted as increasing sulfide addition occurred. Intermediate sulfide concentrations led to multiple, thermodynamically preferred NC species within a sample. Fluorescence of histidine-ZnS NCs was greater than ZnS prepared previously with cysteinyl peptides. Transmission electron microscopy and selected-area electron diffraction indicated hexagonal ZnS crystals having an average size of 4.2 nm. A photocatalytic application of histidine-ZnS NCs was shown by efficient degradation of p-nitrophenol and paraquat in the presence of UV irradiation.
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Affiliation(s)
- R Kho
- Department of Neuroscience, University of California, Riverside 92521, USA
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Brelle MC, Zhang JZ, Nguyen L, Mehra RK. Synthesis and Ultrafast Study of Cysteine- and Glutathione-Capped Ag2S Semiconductor Colloidal Nanoparticles. J Phys Chem A 1999. [DOI: 10.1021/jp991999j] [Citation(s) in RCA: 124] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nguyen L, Kho R, Bae W, Mehra RK. Glutathione as a matrix for the synthesis of CdS nanocrystallites. CHEMOSPHERE 1999; 38:155-173. [PMID: 10903098 DOI: 10.1016/s0045-6535(98)00168-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
GSH-capped CdS nanocrystallites were synthesized by reacting Cd(II)-GSH with aqueous sodium sulfide using specific initial sulfide/Cd(II) ratios. Spectroscopic analyses of fractions obtained from a size exclusion column showed varying absorption spectra indicating a significant dispersion in size-distribution of nanocrystallites at lower sulfide/Cd(II) ratios. However, size distribution of the nanocrystallites was narrower at initial sulfide/Cd(II) ratios that exceeded 1.0. An ethanol precipitation procedure was used to remove free Cd(II)-GSH complexes and selectively isolate GSH-capped nanocrystallites in a very narrow size range. Size exclusion chromatography indicated similar chemical compositions and overlapping spectral profiles of ethanol-precipitated samples suggesting apparent uniformity in both the size and the cap content. All of the GSH-capped CdS nanocrystallites with varying cap contents degraded p-nitrophenol upon irradiation at 366 nm. However, photocatalytic degradation of p-nitrophenol was significantly higher in samples with higher sulfide/Cd ratio and less capping material. The addition of H2O2 enhanced levels of photo-oxidation of p-nitrophenol.
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Affiliation(s)
- L Nguyen
- Department of Biochemistry, University of California, Riverside 92507, USA
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Bae W, Mehra RK. Properties of glutathione- and phytochelatin-capped CdS bionanocrystallites. J Inorg Biochem 1998. [DOI: 10.1016/s0162-0134(97)10006-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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