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Yang Z, Lu L, Kiely CJ, Berger BW, McIntosh S. Biomineralized CdS Quantum Dot Nanocrystals: Optimizing Synthesis Conditions and Improving Functional Properties by Surface Modification. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03487] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhou Yang
- Department of Chemical and Biomolecular Engineering, ‡Department of Materials Science and
Engineering, and §Program in Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Li Lu
- Department of Chemical and Biomolecular Engineering, ‡Department of Materials Science and
Engineering, and §Program in Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Christopher J. Kiely
- Department of Chemical and Biomolecular Engineering, ‡Department of Materials Science and
Engineering, and §Program in Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Bryan W. Berger
- Department of Chemical and Biomolecular Engineering, ‡Department of Materials Science and
Engineering, and §Program in Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Steven McIntosh
- Department of Chemical and Biomolecular Engineering, ‡Department of Materials Science and
Engineering, and §Program in Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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Application of photocatalytic cadmium sulfide nanoparticles to detection of enzymatic activities of glucose oxidase and glutathione reductase using oxidation of 3,3′,5,5′-tetramethylbenzidine. Anal Chim Acta 2015; 881:131-8. [DOI: 10.1016/j.aca.2015.04.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/31/2015] [Accepted: 04/02/2015] [Indexed: 11/24/2022]
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Protein structural changes induced by glutathione-coated CdS quantum dots as revealed by Trp phosphorescence. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2011; 40:1237-45. [DOI: 10.1007/s00249-011-0736-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 06/24/2011] [Accepted: 06/30/2011] [Indexed: 10/18/2022]
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Spreitzer G, Whitling JM, Wright DW. Combinatorial Approaches to Peptide-Encapsulated CdS Nanoclusters. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-599-201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractAs many properties of group II-VI semiconductor nanocrystallites arise from their quantum confined nature, the synthesis of these clusters is of great interest. The challenge of synthesizing functional nanoclusters is, however, complicated by the limited stability of metalchalcogen surfaces under highly oxidizing conditions and Ostwald ripening. Our objectives are to develop methods for the synthesis of biogenic CdS semiconductor nanocrystallites that address the following issues: (1) What properties of the ligand peptide are important in stabilizing and producing CdS particles of any desired size? (2) Will hybrid peptides using nonnatural amino acids stabilize the nanoclusters while incorporating new surface functionality? (3) Is it possible to use novel peptides to modify the particle surface, thereby, controlling the photophysical properties of the CdS cluster? Our approach consists of parallel combinatorial techniques and computational methods for the discovery and optimization of peptide and peptidomimetic ligands to stabilize size-defined clusters of CdS. The effects of cysteine separation on CdS particle size by varying the number of bonds with rotational freedom within the spacer amino acids is examined. Furthermore, the properties of the resulting CdS nanoclusters are reported.
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Slocik J, Govorov A, Naik R. Photoactivated Biotemplated Nanoparticles as an Enzyme Mimic. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Slocik J, Govorov A, Naik R. Photoactivated Biotemplated Nanoparticles as an Enzyme Mimic. Angew Chem Int Ed Engl 2008; 47:5335-9. [DOI: 10.1002/anie.200800023] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Slocik JM, Naik RR. Biomimetic synthesis of bimorphic nanostructures. Methods Mol Biol 2008; 474:53-60. [PMID: 19031060 DOI: 10.1007/978-1-59745-480-3_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The widespread interest in the use of biomimetic approaches for inorganic nanomaterial synthesis have led to the development of biomolecules (peptides, nucleic acids) as key components in material synthesis. Using biomolecules as building blocks, additional functionalities can be introduced by engineering multifunctional peptides that are capable of binding, nucleating, and assembling multiple materials at the nanoscale. We describe methodologies that exploit peptides for the synthesis of bimorphic nanostructures.
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Affiliation(s)
- Joseph M Slocik
- Materials and Manufacturing Directorate, Air Force Research Lab, Wright-Patterson Air Force Base, OH, USA
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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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Barglik-Chory C, Remenyi C, Strohm H, Müller G. Adjustment of the Band Gap Energies of Biostabilized CdS Nanoparticles by Application of Statistical Design of Experiments. J Phys Chem B 2004. [DOI: 10.1021/jp036476x] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ch. Barglik-Chory
- Lehrstuhl für Silicatchemie, Bayerische Julius-Maximilians-Universität Würzburg, D-97070 Würzburg, Germany
| | - Ch. Remenyi
- Lehrstuhl für Silicatchemie, Bayerische Julius-Maximilians-Universität Würzburg, D-97070 Würzburg, Germany
| | - H. Strohm
- Lehrstuhl für Silicatchemie, Bayerische Julius-Maximilians-Universität Würzburg, D-97070 Würzburg, Germany
| | - G. Müller
- Lehrstuhl für Silicatchemie, Bayerische Julius-Maximilians-Universität Würzburg, D-97070 Würzburg, Germany
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Patel AA, Wu F, Zhang JZ, Torres-Martinez CL, Mehra RK, Yang Y, Risbud SH. Synthesis, Optical Spectroscopy and Ultrafast Electron Dynamics of PbS Nanoparticles with Different Surface Capping. J Phys Chem B 2000. [DOI: 10.1021/jp000639p] [Citation(s) in RCA: 146] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amish A. Patel
- Department of Chemistry, University of California, Santa Cruz, California 95064, Department of Neuroscience, University of California, Riverside, California 92521, Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
| | - Fanxin Wu
- Department of Chemistry, University of California, Santa Cruz, California 95064, Department of Neuroscience, University of California, Riverside, California 92521, Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
| | - Jin Z. Zhang
- Department of Chemistry, University of California, Santa Cruz, California 95064, Department of Neuroscience, University of California, Riverside, California 92521, Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
| | - Claudia L. Torres-Martinez
- Department of Chemistry, University of California, Santa Cruz, California 95064, Department of Neuroscience, University of California, Riverside, California 92521, Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
| | - Rajesh K. Mehra
- Department of Chemistry, University of California, Santa Cruz, California 95064, Department of Neuroscience, University of California, Riverside, California 92521, Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
| | - Yi Yang
- Department of Chemistry, University of California, Santa Cruz, California 95064, Department of Neuroscience, University of California, Riverside, California 92521, Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
| | - Subhash H. Risbud
- Department of Chemistry, University of California, Santa Cruz, California 95064, Department of Neuroscience, University of California, Riverside, California 92521, Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
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Wu F, Zhang J, Kho R, Mehra R. Radiative and nonradiative lifetimes of band edge states and deep trap states of CdS nanoparticles determined by time-correlated single photon counting. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)01114-3] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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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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Zhang JZ. Interfacial Charge Carrier Dynamics of Colloidal Semiconductor Nanoparticles. J Phys Chem B 2000. [DOI: 10.1021/jp000594s] [Citation(s) in RCA: 266] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Z. Zhang
- Department of Chemistry, University of California, Santa Cruz, California 95064
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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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