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Yue Q, Sun J, Kang Y, Deng Y. Advances in the Interfacial Assembly of Mesoporous Silica on Magnetite Particles. Angew Chem Int Ed Engl 2020; 59:15804-15817. [DOI: 10.1002/anie.201911690] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Qin Yue
- Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 China
| | - Jianguo Sun
- Eye Institute of Eye and ENT Hospital Fudan University NHC Key Laboratory of Myopia (Fudan University) Shanghai 200031 China
| | - Yijin Kang
- Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 China
| | - Yonghui Deng
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
- State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
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2
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Yue Q, Sun J, Kang Y, Deng Y. Advances in the Interfacial Assembly of Mesoporous Silica on Magnetite Particles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201911690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qin Yue
- Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 China
| | - Jianguo Sun
- Eye Institute of Eye and ENT Hospital Fudan University NHC Key Laboratory of Myopia (Fudan University) Shanghai 200031 China
| | - Yijin Kang
- Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 China
| | - Yonghui Deng
- Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China
- State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China
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3
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Wu YC, Lu YS, Prasad Bastakoti B, Li Y, Pramanik M, Shahriar Hossain M, Yanmaz E, Kuo SW. Mesoporous TiO2Thin Film Formed From a Bioinspired Supramolecular Assembly. ChemistrySelect 2016. [DOI: 10.1002/slct.201601164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi-Chen Wu
- Materials and Optoelectronic Science; National Sun Yat-Sen University; Center for Nanoscience and Nanotechnology; Kaohsiung 804 Taiwan
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba, Ibaraki 305-0044 Japan
| | - Y. S. Lu
- Materials and Optoelectronic Science; National Sun Yat-Sen University; Center for Nanoscience and Nanotechnology; Kaohsiung 804 Taiwan
| | - Bishnu Prasad Bastakoti
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba, Ibaraki 305-0044 Japan
| | - Yunqi Li
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba, Ibaraki 305-0044 Japan
| | - Malay Pramanik
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba, Ibaraki 305-0044 Japan
| | - M. Shahriar Hossain
- Australian Institute for Innovative Materials (AIIM); University of Wollongong; Squires Way North Wollongong, NSW 2500 Australia
| | - Ekrem Yanmaz
- Department of Mechatronics, Faculty of Engineering and Architecture; Gelisim University; Istanbul 34315 Turkey
| | - Shiao-Wei Kuo
- Materials and Optoelectronic Science; National Sun Yat-Sen University; Center for Nanoscience and Nanotechnology; Kaohsiung 804 Taiwan
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4
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Koo HM, Tran-Phu T, Yi GR, Shin CH, Chung CH, Bae JW. Effect of the ordered meso–macroporous structure of Co/SiO2 on the enhanced activity of hydrogenation of CO to hydrocarbons. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01685a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ordered meso–macroporous silica (MMS) was applied for the cobalt-based FTS reaction, and the enhanced activity on the Co/MMS was mainly due to the larger macropore cavity by enhancing the mass transfer rate which can be easily regenerated by in situ feeding of liquid hydrocarbons.
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Affiliation(s)
- Hyun Mo Koo
- School of Chemical Engineering
- Sungkyunkwan University (SKKU)
- Suwon
- Republic of Korea
| | - Thanh Tran-Phu
- School of Chemical Engineering
- Sungkyunkwan University (SKKU)
- Suwon
- Republic of Korea
| | - Gi-Ra Yi
- School of Chemical Engineering
- Sungkyunkwan University (SKKU)
- Suwon
- Republic of Korea
| | - Chae-Ho Shin
- Department of Chemical Engineering
- Chungbuk National University
- Cheongju
- Republic of Korea
| | - Chan-Hwa Chung
- School of Chemical Engineering
- Sungkyunkwan University (SKKU)
- Suwon
- Republic of Korea
| | - Jong-Wook Bae
- School of Chemical Engineering
- Sungkyunkwan University (SKKU)
- Suwon
- Republic of Korea
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5
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Shankar R, Singla N, Asija M, Shestakova P. A recipe for the synthesis of diorganotin(iv) phosphonates in a colloidal regime by a solution based approach. RSC Adv 2015. [DOI: 10.1039/c4ra14853c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tin(iv) based coordination polymers bearing silaalkyl substituted phosphonate ligands adopt rod, rosette and spherical-shaped morphologies. The particle size can be modulated into a nano/colloidal regime by a solution based approach.
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Affiliation(s)
- Ravi Shankar
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- New Delhi-110016
- India
| | - Nisha Singla
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- New Delhi-110016
- India
| | - Meenal Asija
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- New Delhi-110016
- India
| | - Pavletta Shestakova
- Laboratory of Nuclear Magnetic Resonance
- Institute of Organic Chemistry
- Bulgarian Academy of Sciences
- 1113 Sofia
- Bulgaria
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6
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Lou Z, He M, Wang R, Qin W, Zhao D, Chen C. Large-Scale Synthesis of Monodisperse Magnesium Ferrite via an Environmentally Friendly Molten Salt Route. Inorg Chem 2014; 53:2053-7. [DOI: 10.1021/ic402558t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Zhengsong Lou
- Jiangsu
Key Laboratory of Precious Metals Chemistry and Engineering, School
of Chemistry and Environment Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
- CAS Key Laboratory of Soft Matter Chemistry, Department
of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Minglong He
- Jiangsu
Key Laboratory of Precious Metals Chemistry and Engineering, School
of Chemistry and Environment Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| | - Ruikun Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department
of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Weiwei Qin
- Jiangsu
Key Laboratory of Precious Metals Chemistry and Engineering, School
of Chemistry and Environment Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| | - Dejian Zhao
- Jiangsu
Key Laboratory of Precious Metals Chemistry and Engineering, School
of Chemistry and Environment Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department
of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
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7
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Wang J, Zhu J. Recent advances in spherical photonic crystals: Generation and applications in optics. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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8
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Fan JB, Huang C, Jiang L, Wang S. Nanoporous microspheres: from controllable synthesis to healthcare applications. J Mater Chem B 2013; 1:2222-2235. [DOI: 10.1039/c3tb00021d] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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9
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Guo J, Zhou X, Lu Y, Zhang X, Kuang S, Hou W. Monodisperse spindle-like FeWO4 nanoparticles: Controlled hydrothermal synthesis and enhanced optical properties. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.07.026] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Esquena J, Nestor J, Vílchez A, Aramaki K, Solans C. Preparation of mesoporous/macroporous materials in highly concentrated emulsions based on cubic phases by a single-step method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:12334-12340. [PMID: 22734484 DOI: 10.1021/la302120f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A novel and simple single-step method for the preparation of meso/macroporous silica materials is described, which consists in templating in highly concentrated emulsions with a cubic liquid crystal in the continuous phase. Tetraethyl orthosilicate (TEOS) was solubilized in the aqueous continuous phase of highly concentrated emulsions stabilized by C(12)(EO)(8) and a PEO-PPO-PEO block copolymer nonionic surfactant, with a cubic liquid crystalline phase of the Fd3m type. The resulting silica materials were characterized by small-angle X-ray scattering, nitrogen sorption and transmission electron microscopy. The results showed that a dual pore size distribution was obtained, consisting of mesopores in the nanometer range and macropores between 1 and 5 μm. These dual meso/macroporous silicas with bimodal pore size distribution can possess specific surface areas higher than 400 m(2)/g.
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Affiliation(s)
- Jordi Esquena
- Institute for Advanced Chemistry of Catalonia, Spanish Council for Scientific Research (IQAC-CSIC), Barcelona, Spain.
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11
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Vílchez S, Pérez-Carrillo LA, Miras J, Solans C, Esquena J. Oil-in-alcohol highly concentrated emulsions as templates for the preparation of macroporous materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:7614-7621. [PMID: 22489569 DOI: 10.1021/la205018z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
New oil-in-alcohol highly concentrated emulsions were formulated and were used as a templates to obtain macroporous poly(furfuryl alcohol) monoliths by a one-step method. The oil-in-alcohol highly concentrated emulsions were prepared by stepwise addition of the oil phase to the surfactant-alcohol solution and were characterized by optical microscopy and by laser diffraction. The typical structure of highly concentrated emulsions, with close-packed polyhedral droplets, has been observed. Poly(furfuryl alcohol) monoliths were obtained by polymerizing in the external phase of these emulsions. These materials are mainly macroporous and retain the size distribution and morphology from the highly concentrated emulsions. The internal structure of the monoliths was observed by scanning electron microscopy. The images showed an interconnected network with pore size similar to the droplet size of the highly concentrated emulsions used as templates.
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Affiliation(s)
- Susana Vílchez
- Institute for Advanced Chemistry of Catalonia, Consejo Superior de Investigaciones Científicas (IQAC-CSIC) and CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Jordi Girona, 18-26, 08034 Barcelona, Spain
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12
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Qu L, Vaia RA, Dai L. Multilevel, multicomponent microarchitectures of vertically-aligned carbon nanotubes for diverse applications. ACS NANO 2011; 5:994-1002. [PMID: 21280670 DOI: 10.1021/nn102411s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A simple multiple contact transfer technique has been developed for controllable fabrication of multilevel, multicomponent microarchitectures of vertically aligned carbon nanotubes (VA-CNTs). Three dimensional (3-D) multicomponent micropatterns of aligned single-walled carbon nanotubes (SWNTs) and multiwalled carbon nanotubes (MWNTs) have been fabricated, which can be used to develop a newly designed touch sensor with reversible electrical responses for potential applications in electronic devices, as demonstrated in this study. The demonstrated dependence of light diffraction on structural transfiguration of the resultant CNT micropattern also indicates their potential for optical devices. Further introduction of various components with specific properties (e.g., ZnO nanorods) into the CNT micropatterns enabled us to tailor such surface characteristics as wettability and light response. Owing to the highly generic nature of the multiple contact transfer strategy, the methodology developed here could provide a general approach for interposing a large variety of multicomponent elements (e.g., nanotubes, nanorods/wires, photonic crystals, etc.) onto a single chip for multifunctional device applications.
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Affiliation(s)
- Liangti Qu
- Key Laboratory of Cluster Science, Ministry of Education of China, Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081, P. R. China.
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13
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Li ML, Yao QZ, Zhou GT, Qu XF, Mu CF, Fu SQ. Microwave-assisted controlled synthesis of monodisperse pyrite microspherolites. CrystEngComm 2011. [DOI: 10.1039/c1ce05478c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Wang N, Zou R, Chen H, Chen H, Sun Y, Wu J, Tian Q, Yang J, Chen Z, Hu J. Uniform ZnSe microspheres self-assembled from ZnSe polyhedron shaped nanocrystals. CrystEngComm 2011. [DOI: 10.1039/c0ce00472c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Cheng H, Huang B, Yang K, Wang Z, Qin X, Zhang X, Dai Y. Facile Template-Free Synthesis of Bi2O2CO3 Hierarchical Microflowers and Their Associated Photocatalytic Activity. Chemphyschem 2010; 11:2167-73. [DOI: 10.1002/cphc.200901017] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Shen Z, Zhu Y, Wu L, You B, Zi J. Fabrication of robust crystal balls from the electrospray of soft polymer spheres/silica dispersion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:6604-6609. [PMID: 19968296 DOI: 10.1021/la903938s] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This paper presents a novel and facile approach to fabricate robust crystal balls directly through the self-assembly of soft colloidal polymer spheres by the aid of nano silica using an electrospraying technique. In this approach, soft colloidal polymer spheres are synthesized by emulsion polymerization and then blended with colloidal silica to obtain nanocomposite dispersion. When this dispersion is loaded into an injector and forced to flow through the nozzle under direct electric field, the detached droplets are collected by an oil solvent. As water and solvent evaporate, the colloidal polymer spheres and silica beads can directly self-assemble into robust crystal balls. Neither soft matrix nor post-treatment is needed. The obtained crystal balls have not only excellent mechanical properties to withstand external forces such as cutting, puckering, and bending, but also reversible deformation.
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Affiliation(s)
- Zhehong Shen
- Department of Materials Science and Advanced Coatings Research Center of China Educational Ministry, Fudan University, Shanghai 200433, PR China
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17
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Speranza V, Trotta F, Drioli E, Gugliuzza A. High-definition polymeric membranes: construction of 3D lithographed channel arrays through control of natural building blocks dynamics. ACS APPLIED MATERIALS & INTERFACES 2010; 2:459-466. [PMID: 20356192 DOI: 10.1021/am900701r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The fabrication of well-defined interfaces is in high demand in many fields of biotechnologies. Here, high-definition membrane-like arrays are developed through the self-assembly of water droplets, which work as natural building blocks for the construction of ordered channels. Solution viscosity together with the dynamics of the water droplets can decide the final formation of three-dimensional well-ordered patterns resembling anodic structures, especially because solvents denser than water are used. Particularly, the polymer solution viscosity is demonstrated to be a powerful tool for control of the mobility of submerged droplets during the microfabrication process. The polymeric patterns are structured at very high levels of organization and exhibit well-established transport-surface property relationships, considered basics for any types of advanced biotechnologies.
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Affiliation(s)
- Valentina Speranza
- Research Institute on Membrane Technology, National Research Council, I-87030 Rende, Italy
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18
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Cho YS, Kim SH, Yi GR, Yang SM. Self-organization of colloidal nanospheres inside emulsion droplets: Higher-order clusters, supraparticles, and supraballs. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.05.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Hu J, Zhao XW, Zhao YJ, Li J, Xu WY, Wen ZY, Xu M, Gu ZZ. Photonic crystal hydrogel beads used for multiplex biomolecular detection. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b906652g] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Chang YE, Youn DY, Ankonina G, Yang DJ, Kim HG, Rothschild A, Kim ID. Fabrication and gas sensing properties of hollow SnO2 hemispheres. Chem Commun (Camb) 2009:4019-21. [DOI: 10.1039/b902542a] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Sun C, Zhao XW, Zhao YJ, Zhu R, Gu ZZ. Fabrication of colloidal crystal beads by a drop-breaking technique and their application as bioassays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:592-6. [PMID: 18431722 DOI: 10.1002/smll.200701026] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- Cheng Sun
- State Key Laboratory of Bioelectronics Southeast University Nanjing 210096, PR China
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22
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Venkatesh S, Jiang P, Jiang B. Generalized fabrication of two-dimensional non-close-packed colloidal crystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:8231-5. [PMID: 17571908 DOI: 10.1021/la7006809] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
In this paper we report a generalized templating approach for fabricating wafer-scale, two-dimensional, non-close-packed (ncp) colloidal crystals. Polymer nanocomposites consisting of monolayer ncp colloidal crystals prepared by a spin-coating process are used as sacrificial templates. After removal of the colloidal silica templates, the voids in the polymer matrix are infiltrated with other materials. By plasma-etching the polymer matrix, wafer-scale ncp colloidal crystals from a variety of functional materials can be made. This technique is scalable and compatible with standard microfabrication. Two-component colloidal arrays with complex micropatterns can also be fabricated by combining microfabrication with this templating approach. Normal-incidence reflectivity spectra of replicated titania ncp arrays agree well with theoretical prediction using Scalar Wave Approximation.
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Affiliation(s)
- Srinivasan Venkatesh
- Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA
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23
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Song L, Lam YM, Boothroyd C, Teo PW. One-step synthesis of titania nanoparticles from PS-P4VP diblock copolymer solution. NANOTECHNOLOGY 2007; 18:135605. [PMID: 21730383 DOI: 10.1088/0957-4484/18/13/135605] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polymeric films containing titania nanoparticles have potential as dielectric films for flexible electronic applications. For this purpose, the nanoparticles must be homogeneously distributed. Self-assembly is emerging as a neat, elegant method for fabricating such nanostructured hybrid materials with well-distributed nanoparticles. In this work, we report a micellar solution approach for the assembly of copolymer-titanium precursor nanostructures in which titania nanoparticles were synthesized. The ratio of the amount of titanium precursor, titanium isopropoxide, to the blocks forming the micellar core, poly(4-vinylpyridine), was found to play a key role in controlling film morphology. A sphere-to-ribbon transition was observed when the amount of titanium isopropoxide was increased. The thin film morphology can be tuned using the precursor-copolymer interaction rather than just the polymer-polymer interaction or the polymer-solution interaction. This method provides yet another way to control the morphology of nanostructures.
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Affiliation(s)
- Lixin Song
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
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24
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Zhang L, Wang W, Chen Z, Zhou L, Xu H, Zhu W. Fabrication of flower-like Bi2WO6 superstructures as high performance visible-light driven photocatalysts. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b616460a] [Citation(s) in RCA: 417] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Zhao X, Cao Y, Ito F, Chen HH, Nagai K, Zhao YH, Gu ZZ. Colloidal Crystal Beads as Supports for Biomolecular Screening. Angew Chem Int Ed Engl 2006; 45:6835-8. [PMID: 17001731 DOI: 10.1002/anie.200601302] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiangwei Zhao
- State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China
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26
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Zhao X, Cao Y, Ito F, Chen HH, Nagai K, Zhao YH, Gu ZZ. Colloidal Crystal Beads as Supports for Biomolecular Screening. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200601302] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Kim ID, Rothschild A, Hyodo T, Tuller HL. Microsphere templating as means of enhancing surface activity and gas sensitivity of CaCu(3)Ti(4)O(12) thin films. NANO LETTERS 2006; 6:193-8. [PMID: 16464033 DOI: 10.1021/nl051965p] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Chemical and physical synthesis routes were combined to prepare macroporous CaCu(3)Ti(4)O(12) thin films by pulsed laser deposition onto poly(methyl methacrylate) (PMMA) microsphere templated substrates. These films showed remarkably enhanced gas sensitivity compared with control films deposited on untreated substrates, demonstrating the virtues of combining thin film physical vapor deposition (PVD) techniques in concert with colloidal templates to produce macroporous structures of inorganic films with enhanced surface activity for applications in chemical sensors, catalysts, and fuel cells.
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Affiliation(s)
- Il-Doo Kim
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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28
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Hong SH, Moon JH, Lim JM, Kim SH, Yang SM. Fabrication of spherical colloidal crystals using electrospray. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:10416-21. [PMID: 16262301 DOI: 10.1021/la051266s] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We demonstrated the use of electrohydrodynamic atomization to prepare uniform-sized emulsion droplets in which equal spheres of silica or polystyrene were dispersed. The size of the emulsion droplets was easily controlled by the electric field strength and the flow rate, independently of the diameter of the nozzles. During the evaporation of solvent in the droplets, spherical colloidal crystals were formed by self-assembly of the monodisperse colloidal spheres. The diameter of the spherical colloidal crystals was in the range of 10-40 microm. Depending on the stability of colloidal particles, the morphology of the self-assembled structure was varied. In particular, silica spheres in ethanol droplets were self-assembled into compactly packed silica colloidal crystals in spherical shapes, whereas polystyrene latex spheres in toluene droplets self-assembled into spherical colloidal crystal shells with hollow cores. The silica colloidal assemblies reflected diffraction colors according to the three-dimensionally ordered arrangement of silica spheres.
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Affiliation(s)
- Seung-Hwan Hong
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon
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Sun X, Dong S, Wang E. Coordination-Induced Formation of Submicrometer-Scale, Monodisperse, Spherical Colloids of Organic−Inorganic Hybrid Materials at Room Temperature. J Am Chem Soc 2005; 127:13102-3. [PMID: 16173711 DOI: 10.1021/ja0534809] [Citation(s) in RCA: 210] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this communication, we demonstrate a novel coordination-based strategy to the fabrication of submicrometer-scale, monodisperse, spherical colloids of organic-inorganic hybrid materials, carried out by mixing H2PtCl6 and p-phenylenediamine (PPD) aqueous solutions at room temperature. The particle size and polydispersity can be controlled by the molar ratio and concentration of reactants, and the optimum experimental parameters for the production of monodisperse colloids are also given.
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Affiliation(s)
- Xuping Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, PR China
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Faunce CA, Reichelt H, Paradies HH, Quitschau P, Zimmermann K. The liquidlike ordering of lipid A-diphosphate colloidal crystals: The influence of Ca2+, Mg2+, Na+, and K+ on the ordering of colloidal suspensions of lipid A-diphosphate in aqueous solutions. J Chem Phys 2005; 122:214727. [PMID: 15974782 DOI: 10.1063/1.1913477] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A comprehensive study was performed on electrostatically stabilized aqueous dispersion of lipid A-diphosphate in the presence of bound Ca2+, Mg2+, K+, and Na+ ions at low ionic strength (0.10-10.0-mM NaCl, 25 degrees C) over a range of volume fraction of 1.0 x 10(-4)< or =phi< or =4.95 x 10(-4). These suspensions were characterized by light scattering (LS), quasielastic light scattering, small-angle x-ray scattering, transmission electron microscopy, scanning electron microscopy, conductivity measurements, and acid-base titrations. LS and electron microscopy yielded similar values for particle sizes, particle size distributions, and polydispersity. The measured static structure factor, S(Q), of lipid A-diphosphate was seen to be heavily dependent on the nature and concentration of the counterions, e.g., Ca2+ at 5.0 nM, Mg2+ at 15.0 microM, and K+ at 100.0 microM (25 degrees C). The magnitude and position of the S(Q) peaks depend not only on the divalent ion concentration (Ca2+ and Mg2+) but also on the order of addition of the counterions to the lipid A-diphosphate suspension in the presence of 0.1-microM NaCl. Significant changes in the rms radii of gyration (R2G) 1/2 of the lipid A-diphosphate particles were observed in the presence of Ca2+ (24.8+/-0.8 nm), Mg2+ (28.5+/-0.7 nm), and K+ (25.2+/-0.6 nm), whereas the Na+ salt (29.1+/-0.8 nm) has a value similar to the one found for the de-ionized lipid A-diphosphate suspensions (29.2+/-0.8 nm). Effective particle charges were determined by fits of the integral equation calculations of the polydisperse static structure factor, S(Q), to the light-scattering data and they were found to be in the range of Z*=700-750 for the lipid A-diphosphate salts under investigation. The light-scattering data indicated that only a small fraction of the ionizable surface sites (phosphate) of the lipid A-diphosphate was partly dissociated (approximately 30%). It was also discovered that a given amount of Ca2+ (1.0-5.0 nM) or K+ (100 microM) influenced the structure much more than Na+ (0.1-10.0-mM NaCl) or Mg2+ (50 microM). By comparing the heights and positions of the structure factor peaks S(Q) for lipid A-diphosphate-Na+ and lipid A-diphosphate-Ca2+, it was concluded that the structure factor does not depend simply on ionic strength but more importantly on the internal structural arrangements of the lipid A-diphosphate assembly in the presence of the bound cations. The liquidlike interactions revealed a considerable degree of ordering in solution accounting for the primary S(Q) peak and also the secondary minimum at large particle separation. The ordering of lipid A-diphosphate-Ca2+ colloidal crystals in suspension showed six to seven discrete diffraction peaks and revealed a face-centered-cubic (fcc) lattice type (a=56.3 nm) at a volume fraction of 3.2 x 10(-4)< or =phi< or =3.9 x 10(-4). The K+ salt also exhibited a fcc lattice (a=55.92 nm) at the same volume fractions, but reveals a different peak intensity distribution, as seen for the lipid A-diphosphate-Ca2+ salt. However, the Mg2+ and the Na+ salts of lipid A-diphosphate showed body-centered-cubic (bcc) lattices with a=45.50 nm and a=41.50 nm, respectively (3.2 x 10(-4)< or =phi< or =3.9 x 10(-4)), displaying the same intensity distribution with the exception of the (220) diffraction peaks, which differ in intensity for both salts of lipid A-diphosphate.
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Affiliation(s)
- C A Faunce
- The University of Salford, Joule Physics Laboratory, Institute for Materials Science Research, Salford M5 4WT, United Kingdom
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Choi DG, Kim S, Lee E, Yang SM. Particle Arrays with Patterned Pores by Nanomachining with Colloidal Masks. J Am Chem Soc 2005; 127:1636-7. [PMID: 15700987 DOI: 10.1021/ja044578a] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In summary, we have developed a new strategy for the fabrication of arrayed colloidal particles well-ordered nanometric holes of three or four fold symmetry by anisotropic reactive ion (plasma) etching of self-organized layers of colloidal spheres. We demonstrated that a mesoporous silica matrix with regular open windows could be used as a lithographic mask and the resulting arrangement of pores on a particle was dependent on the orientation of the colloidal particle stacking. A variety of organic and inorganic materials such as metals for metal-polymer composites, DNA and proteins, semiconducting and ceramic materials, and other polymers and small chemicals can be incorporated via chemical and physical attachment. Particles with patterned pores and composite particles by our nanomachining process can be used as novel functional materials in the field of electronics, photonics, and biotech areas.
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Affiliation(s)
- Dae-Geun Choi
- Department of Intelligent Precision Machine, Nanomechanisms Group, Korea Institute of Machinery & Materials, 171 Jang-dong, Yuseong-gu, Daejeon, 305-343, Korea
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Choi DG, Yu HK, Jang SG, Yang SM. Colloidal Lithographic Nanopatterning via Reactive Ion Etching. J Am Chem Soc 2004; 126:7019-25. [PMID: 15174872 DOI: 10.1021/ja0319083] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report here a novel colloidal lithographic approach to the fabrication of nonspherical colloidal particle arrays with a long-range order by selective reactive ion etching (RIE) of multilayered spherical colloidal particles. First, layered colloidal crystals with different crystal structures (or orientations) were self-organized onto substrates. Then, during the RIE, the upper layer in the colloidal multilayer acted as a mask for the lower layer and the resulting anisotropic etching created nonspherical particle arrays and new patterns. The new patterns have shapes that are different from the original as a result of the relative shadowing of the RIE process by the top layer and the lower layers. The shape and size of the particles and patterns were dependent on the crystal orientation relative to the etchant flow, the number of colloidal layers, and the RIE conditions. The various colloidal patterns can be used as masks for two-dimensional (2-D) nanopatterns. In addition, the resulting nonspherical particles can be used as novel building blocks for colloidal photonic crystals.
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Affiliation(s)
- Dae-Geun Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701 Korea
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Kaneko T, Hamada K, Chen MQ, Akashi M. One-Step Formation of Morphologically Controlled Nanoparticles with Projection Coronas. Macromolecules 2003. [DOI: 10.1021/ma035276g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tatsuo Kaneko
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
| | - Kazuhiro Hamada
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
| | - Ming Qing Chen
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
| | - Mitsuru Akashi
- Department of Nanostructured and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan; School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214036, P. R. China; and Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita 565-0871, Japan and CREST, JST, 4-1-8, Hommachi, Kawaguchi, 332-0012, Japan
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