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Huang J, Lin L, Sun D, Chen H, Yang D, Li Q. Bio-inspired synthesis of metal nanomaterials and applications. Chem Soc Rev 2015; 44:6330-74. [PMID: 26083903 DOI: 10.1039/c5cs00133a] [Citation(s) in RCA: 240] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This critical review focuses on recent advances in the bio-inspired synthesis of metal nanomaterials (MNMs) using microorganisms, viruses, plants, proteins and DNA molecules as well as their applications in various fields. Prospects in the design of bio-inspired MNMs for novel applications are also discussed.
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Affiliation(s)
- Jiale Huang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, and National Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters, Xiamen University, Xiamen, P. R. China.
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52
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Tohidi M, Mahyari FA, Safavi A. A seed-less method for synthesis of ultra-thin gold nanosheets by using a deep eutectic solvent and gum arabic and their electrocatalytic application. RSC Adv 2015. [DOI: 10.1039/c4ra17053a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Ultra-thin and large gold nanosheets were easily synthesized by using a deep eutectic solvent as a reducing and directing agent with gum arabic as a stabilizer and shape-controlling agent through a seed-less protocol.
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Affiliation(s)
- Maryam Tohidi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | | | - Afsaneh Safavi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
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53
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Anisotropic Gold Nanoparticles: Preparation, Properties, and Applications. ANISOTROPIC NANOMATERIALS 2015. [DOI: 10.1007/978-3-319-18293-3_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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54
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Toy R, Peiris PM, Ghaghada KB, Karathanasis E. Shaping cancer nanomedicine: the effect of particle shape on the in vivo journey of nanoparticles. Nanomedicine (Lond) 2014; 9:121-34. [PMID: 24354814 DOI: 10.2217/nnm.13.191] [Citation(s) in RCA: 359] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Recent advances in nanoparticle technology have enabled the fabrication of nanoparticle classes with unique sizes, shapes and materials, which in turn has facilitated major advancements in the field of nanomedicine. More specifically, in the last decade, nanoscientists have recognized that nanomedicine exhibits a highly engineerable nature that makes it a mainstream scientific discipline that is governed by its own distinctive principles in terms of interactions with cells and intravascular, transvascular and interstitial transport. This review focuses on the recent developments and understanding of the relationship between the shape of a nanoparticle and its navigation through different biological processes. It also seeks to illustrate that the shape of a nanoparticle can govern its in vivo journey and destination, dictating its biodistribution, intravascular and transvascular transport, and, ultimately, targeting of difficult to reach cancer sites.
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Affiliation(s)
- Randall Toy
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
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55
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Yu T, Wu Z, Kim WS. Mild temperature synthesis of gold nanoplates using polyethyleneimine and their improved surface enhanced Raman signal. RSC Adv 2014. [DOI: 10.1039/c4ra05528d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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56
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Han TH, Khan MM, Lee J, Cho MH. Optimization of positively charged gold nanoparticles synthesized using a stainless-steel mesh and its application for colorimetric hydrogen peroxide detection. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.09.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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57
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Li N, Zhao P, Astruc D. Anisotrope Gold-Nanopartikel: Synthese, Eigenschaften, Anwendungen und Toxizität. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201300441] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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58
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Li N, Zhao P, Astruc D. Anisotropic Gold Nanoparticles: Synthesis, Properties, Applications, and Toxicity. Angew Chem Int Ed Engl 2014; 53:1756-89. [DOI: 10.1002/anie.201300441] [Citation(s) in RCA: 691] [Impact Index Per Article: 69.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/26/2013] [Indexed: 12/26/2022]
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59
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Dahoumane SA, Wijesekera K, Filipe CDM, Brennan JD. Stoichiometrically controlled production of bimetallic Gold-Silver alloy colloids using micro-alga cultures. J Colloid Interface Sci 2013; 416:67-72. [PMID: 24370403 DOI: 10.1016/j.jcis.2013.10.048] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/25/2013] [Accepted: 10/27/2013] [Indexed: 10/26/2022]
Abstract
This paper reports the production of well-defined, highly stable Ag-Au alloy nanoparticles (NPs) using living cells of Chlamydomonas reinhardtii, with the composition of the bimetallic alloys being solely determined by the stoichiometric ratio in which the metal salts were added to the cultures. The NPs exhibited a single, well-defined surface plasmon resonance (SPR) band confirming that they were made of a homogeneous population of bimetallic alloys. Particle creation by the cells occurred in three stages: (1) internalization of the noble metals by the cells and their reduction resulting in the formation of the NPs; (2) entrapment of the NPs in the extracellular matrix (ECM) surrounding the cells, where they are colloidally stabilized; and (3) release of the NPs from the ECM to the culture medium. We also investigated the effect of the addition of the metals salts on cell viability and the impact on characteristics of the NPs formed. When silver was added to the cultures, cell viability was decreased and this resulted in a ~30nm red shift on the SPR band due to changes in the surrounding environment into which the NPs were released. The same observations (in SPR and cell viability) was made when gold was added to a final concentration of 2 × 10(-4)M, but not when the concentration was equal to 10(-4)M, where cell viability was high and the red shift was negligible.
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Affiliation(s)
- Si Amar Dahoumane
- Biointerfaces Institute, Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Kushlani Wijesekera
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Carlos D M Filipe
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.
| | - John D Brennan
- Biointerfaces Institute, Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada.
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60
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Zhang Y, Guo Y, Xianyu Y, Chen W, Zhao Y, Jiang X. Nanomaterials for ultrasensitive protein detection. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:3802-3819. [PMID: 23740753 DOI: 10.1002/adma.201301334] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Indexed: 06/02/2023]
Abstract
The advances of nanomaterials have provided exciting technologies and novel materials for protein detection, based on the unique properties associated with nanoscale phenomena such as plasmon resonance, catalysis and energy transfer. This article reviews a series of nanomaterials including nanoparticles, nanofibers, nanowires, and nanosheets, and evaluates their performances in the application for protein detection, focusing on approaches that realize ultrasensitive detection. Many of these nanomaterials were used to analyze clinically relevant protein biomarkers. Their detection in the picomolar, femtomolar or even zeptomolar regime has been realized, sometimes even with naked-eye readout. We summarize the detection methods and results according to materials and targets, review the current challenges, and discuss the solution in the context of technological integration such as combining nanomaterials with microfluidics, and classical analytical technologies.
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Affiliation(s)
- Yi Zhang
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, PR China
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61
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Zhou Y, Wang H, Lin W, Lin L, Gao Y, Yang F, Du M, Fang W, Huang J, Sun D, Li Q. Quantitative nucleation and growth kinetics of gold nanoparticles via model-assisted dynamic spectroscopic approach. J Colloid Interface Sci 2013; 407:8-16. [PMID: 23871600 DOI: 10.1016/j.jcis.2013.06.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 04/23/2013] [Accepted: 06/12/2013] [Indexed: 11/27/2022]
Abstract
Lacking of quantitative experimental data and/or kinetic models that could mathematically depict the redox chemistry and the crystallization issue, bottom-to-up formation kinetics of gold nanoparticles (GNPs) remains a challenge. We measured the dynamic regime of GNPs synthesized by l-ascorbic acid (representing a chemical approach) and/or foliar aqueous extract (a biogenic approach) via in situ spectroscopic characterization and established a redox-crystallization model which allows quantitative and separate parameterization of the nucleation and growth processes. The main results were simplified as the following aspects: (I) an efficient approach, i.e., the dynamic in situ spectroscopic characterization assisted with the redox-crystallization model, was established for quantitative analysis of the overall formation kinetics of GNPs in solution; (II) formation of GNPs by the chemical and the biogenic approaches experienced a slow nucleation stage followed by a growth stage which behaved as a mixed-order reaction, and different from the chemical approach, the biogenic method involved heterogeneous nucleation; (III) also, biosynthesis of flaky GNPs was a kinetic-controlled process favored by relatively slow redox chemistry; and (IV) though GNPs formation consists of two aspects, namely the redox chemistry and the crystallization issue, the latter was the rate-determining event that controls the dynamic regime of the whole physicochemical process.
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Affiliation(s)
- Yao Zhou
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters, Xiamen University, Xiamen 361005, PR China
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62
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Mieszawska AJ, Mulder WJM, Fayad ZA, Cormode DP. Multifunctional gold nanoparticles for diagnosis and therapy of disease. Mol Pharm 2013; 10:831-47. [PMID: 23360440 DOI: 10.1021/mp3005885] [Citation(s) in RCA: 448] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Gold nanoparticles (AuNPs) have a number of physical properties that make them appealing for medical applications. For example, the attenuation of X-rays by gold nanoparticles has led to their use in computed tomography imaging and as adjuvants for radiotherapy. AuNPs have numerous other applications in imaging, therapy and diagnostic systems. The advanced state of synthetic chemistry of gold nanoparticles offers precise control over physicochemical and optical properties. Furthermore gold cores are inert and are considered to be biocompatible and nontoxic. The surface of gold nanoparticles can easily be modified for a specific application, and ligands for targeting, drugs or biocompatible coatings can be introduced. AuNPs can be incorporated into larger structures such as polymeric nanoparticles or liposomes that deliver large payloads for enhanced diagnostic applications, efficiently encapsulate drugs for concurrent therapy or add additional imaging labels. This array of features has led to the aforementioned applications in biomedical fields, but more recently in approaches where multifunctional gold nanoparticles are used for multiple methods, such as concurrent diagnosis and therapy, so-called theranostics. This review covers basic principles and recent findings in gold nanoparticle applications for imaging, therapy and diagnostics, with a focus on reports of multifunctional AuNPs.
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Affiliation(s)
- Aneta J Mieszawska
- Translational and Molecular Imaging Institute and Imaging Science Laboratories, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, New York 10029, USA
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63
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Oh JS, Dang LN, Yoon SW, Lee PC, Kim DO, Kim KJ, Nam JD. Amine-Functionalized Polyglycidyl Methacrylate Microsphere as a Unified Template for the Synthesis of Gold Nanoparticles and Single-Crystal Gold Plates. Macromol Rapid Commun 2013; 34:504-10. [DOI: 10.1002/marc.201200713] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 12/21/2012] [Indexed: 11/07/2022]
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64
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Kumar A, Hwang JH, Kumar S, Nam JM. Tuning and assembling metal nanostructures with DNA. Chem Commun (Camb) 2013; 49:2597-609. [DOI: 10.1039/c2cc37536b] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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65
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Goswami AM, Ghosh S. Biological Synthesis of Colloidal Gold Nanoprisms Using <i>Penicillium citrinum</i> MTCC9999. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jbnb.2013.42a003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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66
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Zhan G, Ke L, Li Q, Huang J, Hua D, Ibrahim AR, Sun D. Synthesis of Gold Nanoplates with Bioreducing Agent Using Syringe Pumps: A Kinetic Control. Ind Eng Chem Res 2012. [DOI: 10.1021/ie302483d] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Guowu Zhan
- Department of Chemical
and Biochemical Engineering,
College of Chemistry and Chemical Engineering, Fujian Provincial Key
Laboratory of Chemical Biology, Xiamen University, Xiamen 361005, China
| | - Lanting Ke
- Department of Chemical
and Biochemical Engineering,
College of Chemistry and Chemical Engineering, Fujian Provincial Key
Laboratory of Chemical Biology, Xiamen University, Xiamen 361005, China
| | - Qingbiao Li
- Department of Chemical
and Biochemical Engineering,
College of Chemistry and Chemical Engineering, Fujian Provincial Key
Laboratory of Chemical Biology, Xiamen University, Xiamen 361005, China
| | - Jiale Huang
- Department of Chemical
and Biochemical Engineering,
College of Chemistry and Chemical Engineering, Fujian Provincial Key
Laboratory of Chemical Biology, Xiamen University, Xiamen 361005, China
| | - Dan Hua
- Department of Chemical
and Biochemical Engineering,
College of Chemistry and Chemical Engineering, Fujian Provincial Key
Laboratory of Chemical Biology, Xiamen University, Xiamen 361005, China
| | - Abdul-Rauf Ibrahim
- Department of Chemical
and Biochemical Engineering,
College of Chemistry and Chemical Engineering, Fujian Provincial Key
Laboratory of Chemical Biology, Xiamen University, Xiamen 361005, China
| | - Daohua Sun
- Department of Chemical
and Biochemical Engineering,
College of Chemistry and Chemical Engineering, Fujian Provincial Key
Laboratory of Chemical Biology, Xiamen University, Xiamen 361005, China
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67
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Noruzi M, Zare D, Davoodi D. A rapid biosynthesis route for the preparation of gold nanoparticles by aqueous extract of cypress leaves at room temperature. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 94:84-88. [PMID: 22522293 DOI: 10.1016/j.saa.2012.03.041] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Revised: 02/28/2012] [Accepted: 03/09/2012] [Indexed: 05/31/2023]
Abstract
In the present study, green synthesis of gold nanoparticles was reported using the aqueous extract of cypress leaves. The reduction of gold salt with the extract of cypress leaves resulted in the formation of gold nanoparticles. Effects of extract concentration and extract pH were investigated on the size of the nanoparticles. It was found that the average particle size of synthesized gold nanoparticles depends strongly on extract concentration and extract pH. FT-IR spectroscopy showed that bioorganic capping molecules were bound to the surface of particles. X-ray techniques confirmed the formation of gold nanoparticles and their crystalline structure. The inductively coupled plasma atomic emission spectroscopy analysis displayed that the reaction progress is higher than 90% at room temperature. Gold nanoparticles were mostly spherical in shape along with some irregular shapes. Cypress is an evergreen plant and its leaves are easily available in all four seasons. Also, the rate of the reaction was high and it was completed in only 10min. For these reasons, this method is cost-effective and environmentally friendly. Thus, it can be used in the synthesis of gold nanoparticles instead of chemical methods and other biosynthesis approaches.
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Affiliation(s)
- Masumeh Noruzi
- Nanotechnology Department, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran.
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68
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Li F, Tian D, Cui H. Synthesis and characterizations of iso-luminol-functionalized, tadpole-shaped, gold nanomaterials. LUMINESCENCE 2012; 28:7-15. [DOI: 10.1002/bio.1380] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 10/31/2011] [Accepted: 11/02/2011] [Indexed: 11/10/2022]
Affiliation(s)
- Fang Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry; University of Science and Technology of China; Hefei; People's Republic of China
| | - Dayong Tian
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry; University of Science and Technology of China; Hefei; People's Republic of China
| | - Hua Cui
- CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry; University of Science and Technology of China; Hefei; People's Republic of China
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69
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Pelaz B, del Pino P. Synthesis Applications of Gold Nanoparticles. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/b978-0-12-415769-9.00001-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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70
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Devi PS, Banerjee S, Chowdhury SR, Kumar GS. Eggshell membrane: a natural biotemplate to synthesize fluorescent gold nanoparticles. RSC Adv 2012. [DOI: 10.1039/c2ra21053c] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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71
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Mukherjee P, Roy M, Mandal BP, Choudhury S, Tewari R, Tyagi AK, Kale SP. Synthesis of uniform gold nanoparticles using non-pathogenic bio-control agent: evolution of morphology from nano-spheres to triangular nanoprisms. J Colloid Interface Sci 2011; 367:148-52. [PMID: 22047921 DOI: 10.1016/j.jcis.2011.08.085] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 08/10/2011] [Accepted: 08/11/2011] [Indexed: 10/16/2022]
Abstract
Green synthesis of gold nanospheres with uniform diameter and triangular nanoprisms with optically flat surface was carried out using a non-pathogenic bio-control agent Trichoderma asperellum for reduction of HAuCl(4). Kinetics of the reaction was monitored by UV-Vis absorption spectroscopy. No additional capping/complexing agent was used for stabilizing the gold nanoparticles. Evolution of morphology from pseudospherical nanoparticles to triangular nanoprisms was studied by transmission electron microscopy (TEM). It revealed that three or more pseudospheres fused to form nanoprisms of different shapes and sizes. Slow rate of reduction of HAuCl(4) by constituents of cell-free fungal extract was instrumental in producing such exotic morphologies. Isolation of gold nanotriangles from the reacting masses was achieved by differential centrifugation.
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Affiliation(s)
- P Mukherjee
- NABT Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
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72
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Zhang X, He X, Wang K, Ren F, Qin Z. pH induced protein-scaffold biosynthesis of tunable shape gold nanoparticles. NANOTECHNOLOGY 2011; 22:355603. [PMID: 21828895 DOI: 10.1088/0957-4484/22/35/355603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this paper, a pH-inductive protein-scaffold biosynthesis of shape-tunable crystalline gold nanoparticles at room temperature has been developed. By simple manipulation of the reaction solution's pH, anisotropic gold nanoparticles including spheres, triangles and cubes could be produced by incubating an aqueous solution of sodium tetrachloroaurate with Dolichomitriopsis diversiformis biomasses after immersion in ultrapure Millipore water overnight. A moss protein with molecular weight of about 71 kDa and pI of 4.9 was the primary biomolecule involved in the biosynthesis of gold nanoparticles. The secondary configuration of the proteins by CD spectrum implied that the moss protein could display different secondary configurations including random coil, α-helix and intermediate conformations between random coil and α-helix for the experimental pH solution. The growth process of gold nanoparticles further showed that the moss protein with different configurations provided the template scaffold for the shape-controlled biosynthesis of gold nanoparticles. The constrained shape of the gold nanoparticles, however, disappeared in boiled moss extract. The gold nanoparticles with designed morphology were successfully reconstructed using the moss protein purified from the gold nanoparticles. Structural characterizations by SEM, TEM and SAED showed that the triangular and cubic gold nanoparticles were single crystalline.
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Affiliation(s)
- Xiaorong Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, People's Republic of China
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73
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Tai Y, Chang LW, Tran N, Tsai YC, Fang JY. One-step synthesis of highly biocompatible multi-shaped gold nanostructures with fruit extract. IET Nanobiotechnol 2011; 5:52. [DOI: 10.1049/iet-nbt.2010.0028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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74
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Bolisetty S, Vallooran JJ, Adamcik J, Handschin S, Gramm F, Mezzenga R. Amyloid-mediated synthesis of giant, fluorescent, gold single crystals and their hybrid sandwiched composites driven by liquid crystalline interactions. J Colloid Interface Sci 2011; 361:90-6. [PMID: 21652047 DOI: 10.1016/j.jcis.2011.05.018] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Revised: 05/06/2011] [Accepted: 05/07/2011] [Indexed: 11/25/2022]
Abstract
We report for the first time on the templating effect of β-lactoglobulin amyloid-like fibrils to synthesize gold single crystals of several decades of μm in dimensions. The gold single crystals were produced by reducing an aqueous solution of chloroauric acid by β-lactoglobulin amyloid protein fibrils. Atomic force microscopy, conventional and scanning transmission electron microscopy, electron diffraction and optical microscopy techniques were combined to characterize the structure of the gold crystals. The single-crystalline features of these macroscopic gold crystals are witnessed by their distinctive hexagonal and triangular shape and are confirmed by selected area electron diffraction (SAED). UV-vis absorption spectrum, recorded after a reaction time of 6h at the heating temperature of 55°C showed a surface plasmon resonance peak at 540 nm. With the increase of reaction time to 24h, the absorption spectrum peaks shift to a very broad and higher wavelength region extending up to near infrared region. Remarkably, these single crystalline gold crystals show auto fluorescence when illuminated to UV lamp. Further increase in β-lactoglobulin amyloid fibrils concentration above the isotropic-nematic transition, drives the formation of gold single crystals microplates stacking together and self-assembling into new hierarchical, layered protein-gold hybrid composites.
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Affiliation(s)
- Sreenath Bolisetty
- ETH Zurich, Food and Soft Materials Science, Institute of Food, Nutrition and Health, Zurich, Switzerland
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75
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Tan SJ, Campolongo MJ, Luo D, Cheng W. Building plasmonic nanostructures with DNA. NATURE NANOTECHNOLOGY 2011; 6:268-76. [PMID: 21499251 DOI: 10.1038/nnano.2011.49] [Citation(s) in RCA: 511] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Plasmonic structures can be constructed from precise numbers of well-defined metal nanoparticles that are held together with molecular linkers, templates or spacers. Such structures could be used to concentrate, guide and switch light on the nanoscale in sensors and various other devices. DNA was first used to rationally design plasmonic structures in 1996, and more sophisticated motifs have since emerged as effective and versatile species for guiding the assembly of plasmonic nanoparticles into structures with useful properties. Here we review the design principles for plasmonic nanostructures, and discuss how DNA has been applied to build finite-number assemblies (plasmonic molecules), regularly spaced nanoparticle chains (plasmonic polymers) and extended two- and three-dimensional ordered arrays (plasmonic crystals).
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Affiliation(s)
- Shawn J Tan
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, USA
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76
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Biomimetic fabrication of gold nanoparticles on templated indole-3-acetic acid based nanofibers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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77
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Sajanlal PR, Sreeprasad TS, Samal AK, Pradeep T. Anisotropic nanomaterials: structure, growth, assembly, and functions. NANO REVIEWS 2011; 2:NANO-2-5883. [PMID: 22110867 PMCID: PMC3215190 DOI: 10.3402/nano.v2i0.5883] [Citation(s) in RCA: 192] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Accepted: 12/11/2010] [Indexed: 02/04/2023]
Abstract
Comprehensive knowledge over the shape of nanomaterials is a critical factor in designing devices with desired functions. Due to this reason, systematic efforts have been made to synthesize materials of diverse shape in the nanoscale regime. Anisotropic nanomaterials are a class of materials in which their properties are direction-dependent and more than one structural parameter is needed to describe them. Their unique and fine-tuned physical and chemical properties make them ideal candidates for devising new applications. In addition, the assembly of ordered one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) arrays of anisotropic nanoparticles brings novel properties into the resulting system, which would be entirely different from the properties of individual nanoparticles. This review presents an overview of current research in the area of anisotropic nanomaterials in general and noble metal nanoparticles in particular. We begin with an introduction to the advancements in this area followed by general aspects of the growth of anisotropic nanoparticles. Then we describe several important synthetic protocols for making anisotropic nanomaterials, followed by a summary of their assemblies, and conclude with major applications.
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Affiliation(s)
- Panikkanvalappil R Sajanlal
- DST Unit of Nanoscience (DST UNS), Department of Chemistry, Indian Institute of Technology Madras, Chennai, India
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78
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Zhou Y, Lin W, Wang H, Li Q, Huang J, Du M, Lin L, Gao Y, Lin L, He N. Transfer of biosynthesized gold nanoparticles from water into an ionic liquid using alkyltrimethyl ammonium bromide: an anion-exchange process. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:166-169. [PMID: 21082816 DOI: 10.1021/la103586f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Biosynthesized gold nanoparticles (GNPs) were transferred from water to a hydrophobic ionic liquid (IL), [Bmim]PF(6), with the assistance of alkyl trimethyl ammonium bromide. The phase transfer mechanism was illustrated through the exemplification of cetyltrimethyl ammonium bromide (CTAB). Interaction between GNPs and CTAB was demonstrated through zeta potential analysis. Moreover, an anion-exchange process was discovered between CTAB and IL. During the process, the hydrophobic CTAPF(6) formed in situ on the GNPs led to the hydrophobization and thus phase transfer of the GNPs. The phase transfer efficiency was found to be size-dependent.
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Affiliation(s)
- Yao Zhou
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, PR China
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79
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Pradhan M, Sarkar S, Sinha AK, Basu M, Pal T. Morphology controlled uranium oxide hydroxide hydrate for catalysis, luminescence and SERS studies. CrystEngComm 2011. [DOI: 10.1039/c0ce00666a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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80
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Pastoriza‐Santos I, Alvarez‐Puebla RA, Liz‐Marzán LM. Synthetic Routes and Plasmonic Properties of Noble Metal Nanoplates. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000575] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Isabel Pastoriza‐Santos
- Departamento de Química Física and Unidad Asociada CSIC‐Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986812556
| | - Ramón A. Alvarez‐Puebla
- Departamento de Química Física and Unidad Asociada CSIC‐Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986812556
| | - Luis M. Liz‐Marzán
- Departamento de Química Física and Unidad Asociada CSIC‐Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986812556
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81
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Sathishkumar M, Mahadevan A, Vijayaraghavan K, Pavagadhi S, Balasubramanian R. Green Recovery of Gold through Biosorption, Biocrystallization, and Pyro-Crystallization. Ind Eng Chem Res 2010. [DOI: 10.1021/ie100104j] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Sathishkumar
- Singapore-Delft Water Alliance and Division of Environmental Science and Engineering, National University of Singapore, Singapore 117576, Singapore
| | - A. Mahadevan
- Singapore-Delft Water Alliance and Division of Environmental Science and Engineering, National University of Singapore, Singapore 117576, Singapore
| | - K. Vijayaraghavan
- Singapore-Delft Water Alliance and Division of Environmental Science and Engineering, National University of Singapore, Singapore 117576, Singapore
| | - S. Pavagadhi
- Singapore-Delft Water Alliance and Division of Environmental Science and Engineering, National University of Singapore, Singapore 117576, Singapore
| | - R. Balasubramanian
- Singapore-Delft Water Alliance and Division of Environmental Science and Engineering, National University of Singapore, Singapore 117576, Singapore
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82
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Fang YM, Lin ZB, Zeng YM, Chen WK, Chen GN, Sun JJ, Ren B, Tian ZQ. Facile Electrochemical Preparation of Ag Nanothorns and Their Growth Mechanism. Chemistry 2010; 16:6766-70. [DOI: 10.1002/chem.201000068] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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83
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Liu Q, Lai L, Huang H, Sun J, Shang T, Zhou Q, Xu Z. High-yield Synthesis of Branched Gold Nanocrystals by a Sodium Diphenylamine-4-Sulfonate Reduction Process in Polyethylene Glycol Aqueous Solution. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090108] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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84
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Ghodake G, Deshpande N, Lee Y, Jin E. Pear fruit extract-assisted room-temperature biosynthesis of gold nanoplates. Colloids Surf B Biointerfaces 2010; 75:584-9. [DOI: 10.1016/j.colsurfb.2009.09.040] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2009] [Revised: 09/21/2009] [Accepted: 09/30/2009] [Indexed: 10/20/2022]
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85
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Charles DE, Aherne D, Gara M, Ledwith DM, Gun'ko YK, Kelly JM, Blau WJ, Brennan-Fournet ME. Versatile solution phase triangular silver nanoplates for highly sensitive plasmon resonance sensing. ACS NANO 2010; 4:55-64. [PMID: 20030362 DOI: 10.1021/nn9016235] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Solution phase triangular silver nanoplates (TSNP) with versatile tunability throughout the visible-NIR wavelengths are presented as highly sensitive localized surface plasmon refractive index sensors. A range of 20 TSNP solutions with edge lengths ranging from 11 to 200 nm and aspect ratios from 2 to 13 have been studied comprehensively using AFM, TEM, and UV-vis-NIR spectroscopy. Studies of the localized surface plasmon resonance (LSPR) peak's sensitivity to refractive index changes are performed using a simple sucrose concentration method whereby the surrounding refractive index can solely be changed without variation in any other parameter. The dependence of the TSNP localized surface plasmon resonance (LSPR) peak wavelength lambda(max) and its bulk refractive index sensitivity on the nanoplate's structure is determined. LSPR sensitivities are observed to increase linearly with lambda(max) up to 800 nm, with the values lying within the upper limit theoretically predicted for optimal sensitivity, notwithstanding any diminution due to ensemble averaging. A nonlinear increase in sensitivity is apparent at wavelengths within the NIR region with values reaching 1096 nm.RIU(-1) at lambda(max) 1093 nm. Theoretical studies performed using a simple aspect ratio dependent approximation method and discrete dipole approximation methods confirm the dependence of the LSPR bulk refractive index sensitivity upon the TSNP aspect ratio measured experimentally. These studies highlight the importance of this key parameter in acquiring such high sensitivities and promote these TSNP sols for sensing applications at appropriate wavelengths for biological samples.
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86
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Biomodulation Approach for Gold Nanoparticles: Synthesis of Anisotropic to Luminescent Particles. Chem Asian J 2010; 5:70-3. [DOI: 10.1002/asia.200900316] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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87
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Au L, Lim B, Colletti P, Jun YS, Xia Y. Synthesis of gold microplates using bovine serum albumin as a reductant and a stabilizer. Chem Asian J 2010; 5:123-9. [PMID: 19967737 PMCID: PMC2847612 DOI: 10.1002/asia.200900468] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Gold microplates were synthesized in aqueous solutions by reducing HAuCl(4) with the hydroxyl groups in both serine and threonine of bovine serum albumin (BSA), which is a globular protein in its native state. In this article, we systematically investigated the effects of temperature, pH value, the concentration of BSA, and ionic species on the reduction kinetics and thus the size and morphology of the final product. The optimal experimental conditions for producing uniform Au microplates include the following: an elevated temperature in the range of 55-65 degrees C, an acidic solution with pH approximately 3, and the presence of NaCl (0.14 M). We found that if any one of these parameters was deviated from the optimal condition, Au microplates would not be formed in high yields. We also found that the surfaces of the as-synthesized Au microplates were covered by a dense array of BSA bumps.
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Affiliation(s)
- Leslie Au
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
| | - Byungkwon Lim
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
| | - Peter Colletti
- Department of Energy, Environmental and Chemical Engineering, Washington University, St. Louis, MO 63130 (USA)
| | - Young-Shin Jun
- Department of Energy, Environmental and Chemical Engineering, Washington University, St. Louis, MO 63130 (USA)
| | - Younan Xia
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130 (USA)
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88
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Liu G, Cai W, Kong L, Duan G, Lü F. Vertically cross-linking silver nanoplate arrays with controllable density based on seed-assisted electrochemical growth and their structurally enhanced SERS activity. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b917167c] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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89
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Kasthuri J, Rajendiran N. Functionalization of silver and gold nanoparticles using amino acid conjugated bile salts with tunable longitudinal plasmon resonance. Colloids Surf B Biointerfaces 2009; 73:387-93. [DOI: 10.1016/j.colsurfb.2009.06.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 05/25/2009] [Accepted: 06/09/2009] [Indexed: 10/20/2022]
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90
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Slocik JM, Kim SN, Whitehead TA, Clark DS, Naik RR. Biotemplated metal nanowires using hyperthermophilic protein filaments. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:2038-2042. [PMID: 19517487 DOI: 10.1002/smll.200900499] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Joseph M Slocik
- Nanostructured and Biological Materials Branch, Materials and Manufacturing Directorate, Air Force Research Lab, Wright-Patterson AFB, OH 45433-7750, USA
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91
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Huang J, Wang W, Lin L, Li Q, Lin W, Li M, Mann S. A General Strategy for the Biosynthesis of Gold Nanoparticles by Traditional Chinese Medicines and Their Potential Application as Catalysts. Chem Asian J 2009; 4:1050-4. [DOI: 10.1002/asia.200900064] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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92
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Millstone JE, Hurst SJ, Métraux GS, Cutler JI, Mirkin CA. Colloidal gold and silver triangular nanoprisms. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:646-664. [PMID: 19306458 DOI: 10.1002/smll.200801480] [Citation(s) in RCA: 506] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
It is now well-known that the size, shape, and composition of nanomaterials can dramatically affect their physical and chemical properties, and that technologies based on nanoscale materials have the potential to revolutionize fields ranging from catalysis to medicine. Among these materials, anisotropic particles are particularly interesting because the decreased symmetry of such particles often leads to new and unusual chemical and physical behavior. Within this class of particles, triangular Au and Ag nanoprisms stand out due to their structure- and environment-dependent optical features, their anisotropic surface energetics, and the emergence of reliable synthetic methods for producing them in bulk quantities with control over their edge lengths and thickness. This Review will describe a variety of solution-based methods for synthesizing Au and Ag triangular prismatic structures, and will address and discuss proposed mechanisms for their formation.
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Affiliation(s)
- Jill E Millstone
- Department of Chemistry and International Institute of Nanotechnology 2145 Sheridan Road, Evanston, IL 60208, USA
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93
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Xia Y, Xiong Y, Lim B, Skrabalak SE. Shape-controlled synthesis of metal nanocrystals: simple chemistry meets complex physics? Angew Chem Int Ed Engl 2009; 48:60-103. [PMID: 19053095 PMCID: PMC2791829 DOI: 10.1002/anie.200802248] [Citation(s) in RCA: 3079] [Impact Index Per Article: 205.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nanocrystals are fundamental to modern science and technology. Mastery over the shape of a nanocrystal enables control of its properties and enhancement of its usefulness for a given application. Our aim is to present a comprehensive review of current research activities that center on the shape-controlled synthesis of metal nanocrystals. We begin with a brief introduction to nucleation and growth within the context of metal nanocrystal synthesis, followed by a discussion of the possible shapes that a metal nanocrystal might take under different conditions. We then focus on a variety of experimental parameters that have been explored to manipulate the nucleation and growth of metal nanocrystals in solution-phase syntheses in an effort to generate specific shapes. We then elaborate on these approaches by selecting examples in which there is already reasonable understanding for the observed shape control or at least the protocols have proven to be reproducible and controllable. Finally, we highlight a number of applications that have been enabled and/or enhanced by the shape-controlled synthesis of metal nanocrystals. We conclude this article with personal perspectives on the directions toward which future research in this field might take.
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Affiliation(s)
- Younan Xia
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130-4899, USA.
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94
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Engelbrekt C, Sørensen KH, Zhang J, Welinder AC, Jensen PS, Ulstrup J. Green synthesis of gold nanoparticles with starch–glucose and application in bioelectrochemistry. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b911111e] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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95
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Xia Y, Xiong Y, Lim B, Skrabalak S. Formkontrolle bei der Synthese von Metallnanokristallen: einfache Chemie, komplexe Physik? Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802248] [Citation(s) in RCA: 395] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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96
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Dickerson MB, Sandhage KH, Naik RR. Protein- and Peptide-Directed Syntheses of Inorganic Materials. Chem Rev 2008; 108:4935-78. [PMID: 18973389 DOI: 10.1021/cr8002328] [Citation(s) in RCA: 645] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Matthew B. Dickerson
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7702; School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245; and School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0245
| | - Kenneth H. Sandhage
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7702; School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245; and School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0245
| | - Rajesh R. Naik
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7702; School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0245; and School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332-0245
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97
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Lim B, Camargo PHC, Xia Y. Mechanistic study of the synthesis of Au nanotadpoles, nanokites, and microplates by reducing aqueous HAuCl4 with poly(vinyl pyrrolidone). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:10437-10442. [PMID: 18712890 DOI: 10.1021/la801803z] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This article describes a simple approach to anisotropic Au nanostructures with various shapes by reducing HAuCl 4 with poly(vinyl pyrrolidone) (PVP) in aqueous solutions without the use of any additional capping agent or reductant. In this approach, the commercially available PVP servers as a mild reducing agent thanks to its hydroxyl (-OH) end groups, enabling kinetic control over both nucleation and growth. As the volume of HAuCl 4 solution added to the reaction was increased, the morphology of Au nanostructures evolved from nanotadpoles to nanokites and then triangular and hexagonal microplates. The slow reduction rate associated with the mild reducing power of PVP plays a critical role in forming nanoplates during nucleation as well as their growth into highly anisotropic nanostructures. Electron microscopy studies reveal that the nanotadpoles and nanokites are formed through the linear fusion of small Au particles (<10 nm) to the initially formed nanoplates, whereas the microplates result from the continuous addition of Au atoms to the side faces of nanoplates. Through this morphological control, the localized surface plasmon resonance peaks of these Au nanostructures can be tuned in the visible and near-IR regions.
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Affiliation(s)
- Byungkwon Lim
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA
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98
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Sun Z, Chen X, Wang L, Zhang G, Jing B. Synthesis of gold nanoplates in lamellar liquid crystal. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2008.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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99
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Wang L, Chen X, Sun Z, Chai Y. Synthesis of Gold Nanoplates in Lecithin Lamellar Liquid Crystals. CAN J CHEM ENG 2008. [DOI: 10.1002/cjce.5450850505] [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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100
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Gu H, Hu Z, Hu Y, Yuan Y, You J, Zou W. The structure and photoluminescence of Bi4Ti3O12 nanoplates synthesized by hydrothermal method. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.08.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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