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Lin Z, Haataja JS, Hu X, Hong X, Ikkala O, Peng B. Randomizing the growth of silica nanofibers for whiteness. CELL REPORTS. PHYSICAL SCIENCE 2024; 5:102021. [PMID: 38947181 PMCID: PMC11211975 DOI: 10.1016/j.xcrp.2024.102021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/22/2024] [Accepted: 05/10/2024] [Indexed: 07/02/2024]
Abstract
In colloids, the shape influences the function. In silica, straight nanorods have already been synthesized from water-in-oil emulsions. By contrast, curly silica nanofibers have been less reported because the underlying growth mechanism remains unexplored, hindering further morphology control for applications. Herein, we describe the synthetic protocol for silica nanofibers with a tunable curliness based on the control of the water-in-oil emulsion droplets. Systematically decreasing the droplet size and increasing their contact angle, the Brownian motion of the droplets intensifies during the silica growth, thus increasing the random curliness of the nanofibers. This finding is supported by simplistic theoretical arguments and experimentally verified by varying the temperature to finely tune the curliness. Assembling these nanofibers toward porous disordered films enhances multiple scattering in the visible range, resulting in increased whiteness in contrast to films constructed by spherical and rod-like building units, which can be useful for, e.g., coatings and pigments.
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Affiliation(s)
- Zhen Lin
- Department of Applied Physics, Aalto University, P.O. Box 15100, 02150 Espoo, Finland
- Department of Materials Science, Advanced Coatings Research Center of Ministry of Education of China, Fudan University, Shanghai 200433, China
| | - Johannes S. Haataja
- Department of Applied Physics, Aalto University, P.O. Box 15100, 02150 Espoo, Finland
| | - Xichen Hu
- Department of Applied Physics, Aalto University, P.O. Box 15100, 02150 Espoo, Finland
- Department of Materials Science, Advanced Coatings Research Center of Ministry of Education of China, Fudan University, Shanghai 200433, China
| | - Xiaodan Hong
- Department of Applied Physics, Aalto University, P.O. Box 15100, 02150 Espoo, Finland
| | - Olli Ikkala
- Department of Applied Physics, Aalto University, P.O. Box 15100, 02150 Espoo, Finland
| | - Bo Peng
- Department of Applied Physics, Aalto University, P.O. Box 15100, 02150 Espoo, Finland
- Department of Materials Science, Advanced Coatings Research Center of Ministry of Education of China, Fudan University, Shanghai 200433, China
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2
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Controlled synthesis of biomimetic materials with protruding structures by in situ growth of silica nanorods via hydroxyl-localized droplet template method. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Liquid-crystalline behavior on dumbbell-shaped colloids and the observation of chiral blue phases. Nat Commun 2022; 13:5549. [PMID: 36138015 PMCID: PMC9500018 DOI: 10.1038/s41467-022-33125-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/01/2022] [Indexed: 11/21/2022] Open
Abstract
Colloidal liquid crystals are an emerging class of soft materials that naturally combine the unique properties of both liquid crystal molecules and colloidal particles. Chiral liquid crystal blue phases are attractive for use in fast optical displays and electrooptical devices, but the construction of blue phases is limited to a few chiral building blocks and the formation of blue phases from achiral ones is often counterintuitive. Herein we demonstrate that achiral dumbbell-shaped colloids can assemble into a rich variety of characteristic liquid crystal phases, including nematic phases with lock structures, smectic phase, and particularly experimental observation of blue phase III with double-twisted chiral columns. Phase diagrams from experiments and simulations show that the existence and stable regions of different liquid crystal phases are strongly dependent on the geometrical parameters of dumbbell-shaped colloids. This work paves a new route to the design and construction of blue phases for photonic applications. Colloidal liquid crystals account for various applications due to the combination of characteristics relevant for liquid crystals and colloids. The authors elaborate the impact of concave geometry on the properties of colloidal liquid crystals for development of functional materials.
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4
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Spence D, Cullen DA, Polizos G, Muralidharan N, Sharma J. Hollow Silica Particles: A Novel Strategy for Cost Reduction. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1627. [PMID: 34205769 PMCID: PMC8234305 DOI: 10.3390/nano11061627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 11/16/2022]
Abstract
Thermal insulation materials are highly sought after for applications such as building envelopes, refrigerators, cryogenic fuel storage chambers, and water supply piping. However, current insulation materials either do not provide sufficient insulation or are costly. A new class of insulation materials, hollow silica particles, has attracted tremendous attention due to its potential to provide a very high degree of thermal insulation. However, current synthesis strategies provide hollow silica particles at very low yields and at high cost, thus, making the particles unsuitable for real-world applications. In the present work, a synthesis process that produces hollow silica particles at very high yields and at a lower cost is presented. The effect of an infrared heat absorber, carbon black, on the thermal conductivity of hollow silica particles is also investigated and it is inferred that a carbon black-hollow silica particle mixture can be a better insulating material than hollow silica particles alone.
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Affiliation(s)
- Daron Spence
- Electrification and Energy Infrastructure Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA; (D.S.); (G.P.); (N.M.)
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - David A. Cullen
- Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA;
| | - Georgios Polizos
- Electrification and Energy Infrastructure Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA; (D.S.); (G.P.); (N.M.)
| | - Nitin Muralidharan
- Electrification and Energy Infrastructure Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA; (D.S.); (G.P.); (N.M.)
| | - Jaswinder Sharma
- Electrification and Energy Infrastructure Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA; (D.S.); (G.P.); (N.M.)
- Building Technologies Research and Integration Center, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
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5
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Peng J, Zuo C, Xiao Q, Deng K, Meng C, Liu Y, Zhang M, Ma L, Pun SH, Wei H. Synthesis of stimuli-responsive nanosized ring-like colloids and cyclic polymers via a dual-template approach. Chem Sci 2019; 10:3943-3948. [PMID: 31049188 PMCID: PMC6471857 DOI: 10.1039/c9sc00450e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 03/04/2019] [Indexed: 01/10/2023] Open
Abstract
Ring-like particles have received considerable attention due to their unique interior cavity and properties. However, the preparation of stimuli-responsive nanosized rings with internal size smaller than 100 nm remains unexplored likely due to the challenges encountered in their synthesis. The successful fulfillment of this target will not only significantly enrich the family of ring-like nanoparticles but also build a connection that bridges ring-like nanoparticles and cyclic polymers. For this purpose, we report in this study a controlled synthesis of stimuli-responsive ring-like colloids and cyclic polymers using both star-shaped polymers and β-cyclodextrin (β-CD) as the dual templates. The first template comprising star-shaped polymers generated a ring-like structure and adoption of β-CD as the second template further restricted the ring thickness to the height of a β-CD, leading to the generation of stimuli-responsive nanosized ring-like colloids with ring thickness less than 1 nm, which shifted the ring-like structure to cyclic polymers with reversible cross-linked disulfide bridges. The reported "dual-template" approach is thus a valuable alternative to the current synthetic strategies toward stimuli-responsive ring-like colloids and cyclic polymers.
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Affiliation(s)
- Jinlei Peng
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Cai Zuo
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Qi Xiao
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Kaicheng Deng
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Chao Meng
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Yuping Liu
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Miao Zhang
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Liwei Ma
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
| | - Suzie H Pun
- Department of Bioengineering , Molecular Engineering and Sciences Institute , University of Washington , Seattle , Washington 98195 , USA
| | - Hua Wei
- State Key Laboratory of Applied Organic Chemistry , Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province , College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China .
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6
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Cai C, Ge Y, Lin J, Xu Z, Gao H, Xu W. Assembly of silica rods into tunable branched living nanostructures mediated by coalescence of catalyst droplets. Chem Commun (Camb) 2019; 55:4391-4394. [PMID: 30916080 DOI: 10.1039/c9cc00959k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Branched nanostructures with tunable arm numbers were prepared through the assembly of silica rods mediated by coalescence of catalyst droplets on the end of the rods. The formed primary branched colloids retain living characteristics similar to the original ones, that is, they can further assemble into multilevel and hierarchical branched structures.
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Affiliation(s)
- Chunhua Cai
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
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7
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Hagemans F, Pujala RK, Hotie DS, Thies-Weesie DME, de Winter DAM, Meeldijk JD, van Blaaderen A, Imhof A. Shaping Silica Rods by Tuning Hydrolysis and Condensation of Silica Precursors. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2019; 31:521-531. [PMID: 30686858 PMCID: PMC6345103 DOI: 10.1021/acs.chemmater.8b04607] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/14/2018] [Indexed: 06/09/2023]
Abstract
We present the synthesis of colloidal silica particles with new shapes by manipulating the growth conditions of rods that are growing from polyvinylpyrrolidone-loaded water-rich droplets containing ammonia and ethanol. The silica rods grow by ammonia-catalyzed hydrolysis and condensation of tetraethoxysilane (TEOS). The lengthwise growth of these silica rods gives us the opportunity to change the conditions at any time during the reaction. In this work, we vary the availability of hydrolyzed monomers as a function of time and study how the change in balance between the hydrolysis and condensation reactions affects a typical synthesis (as described in more detail by our group earlier1). First, we show that in a "standard" synthesis, there are two silica growth processes occurring; one in the oil phase and one in the droplet. The growth process in the water droplet causes the lengthwise growth of the rods. The growth process in the oil phase produces a thin silica layer around the rods, but also causes the nucleation of 70 nm silica spheres. During a typical rod growth, silica formation mainly takes place in the droplet. The addition of partially hydrolyzed TEOS or tetramethoxysilane (TMOS) to the growth mixture results in a change in balance between the hydrolysis and condensation reaction. As a result, the growth also starts to take place on the surface of the water droplet and thus from the oil phase, not only from inside the droplet onto a silica rod sticking out of the droplet. Carefully tuning the growth from the droplet and the growth from the oil phase allowed us to create nanospheres, hollow silica rods, hollow sphere rod systems (colloidal matchsticks), and bent silica rods.
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Affiliation(s)
- Fabian Hagemans
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Ravi Kumar Pujala
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Danisha S. Hotie
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Dominique M. E. Thies-Weesie
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - D. A. Matthijs de Winter
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Johannes D. Meeldijk
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Alfons van Blaaderen
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Arnout Imhof
- Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
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8
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Spence D, Park J, Cullen DA, Ho HC, Polizos G, Sharma J. Solution-Phase Synthesis of Silica Fibers and Their Use in Making Transparent High-Strength Silica-Polymer Composites. ChemistrySelect 2018. [DOI: 10.1002/slct.201802986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Daron Spence
- Roll-to-Roll Manufacturing Group; Oak Ridge National Laboratory, Oak Ridge; TN 37830 USA
- School of Materials Science and Engineering; Georgia Institute of Technology, Atlanta; GA 30332 USA
| | - Jaehyung Park
- Roll-to-Roll Manufacturing Group; Oak Ridge National Laboratory, Oak Ridge; TN 37830 USA
- Division of Advanced Materials Engineering; Dong-Eui University; Busan 47340 Korea
| | - David A. Cullen
- Material Science and Technology Division; Oak Ridge National Laboratory; Oak Ridge TN 37830 USA
| | - Hoi Chun Ho
- Material Science and Technology Division; Oak Ridge National Laboratory; Oak Ridge TN 37830 USA
- The Bredesen Center for Interdisciplinary Research and Graduate Education; The University of Tennessee Knoxville; TN 37996 USA
| | - Georgios Polizos
- Roll-to-Roll Manufacturing Group; Oak Ridge National Laboratory, Oak Ridge; TN 37830 USA
| | - Jaswinder Sharma
- Roll-to-Roll Manufacturing Group; Oak Ridge National Laboratory, Oak Ridge; TN 37830 USA
- Building Envelope and Urban Systems Research Group; Oak Ridge National Laboratory; Oak Ridge TN 37830 USA
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9
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Liu B, Wu Y, Zhao S. Anisotropic Colloids: From Non-Templated to Patchy Templated Synthesis. Chemistry 2018; 24:10562-10570. [PMID: 29469224 DOI: 10.1002/chem.201705960] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Indexed: 11/09/2022]
Abstract
Self-assembly of colloidal particles is an important and challenging way to generate novel colloidal superstructures for new materials. Recent progress on syntheses of anisotropic colloids highlights opportunities for such self-assembly, particularly in defining new non-cubic superstructures. Both non-templated and templated synthesis play an important role in preparing anisotropic colloidal particles. In this article, we briefly summarize recent progress in anisotropic colloids by non-templated and conventional templated synthesis, and introduce a conceptual strategy of "patchy templated synthesis" that differs from the conventional approach. We illustrate this strategy with recent examples emanating from colloidal rings, and discuss the future opportunities with this strategy for the synthesis of other anisotropic colloids.
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Affiliation(s)
- Bing Liu
- State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yuanyuan Wu
- State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shuping Zhao
- State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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10
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Kim JH, Hwang HJ, Oh JS, Sacanna S, Yi GR. Monodisperse Magnetic Silica Hexapods. J Am Chem Soc 2018; 140:9230-9235. [DOI: 10.1021/jacs.8b05128] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jae-Hyun Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hye Jeong Hwang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | | | | | - Gi-Ra Yi
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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11
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Li C, Zhang S, Zhang B, Liu J, Zhang W, Solovev AA, Tang R, Bao F, Yu J, Zhang Q, Lifshitz Y, He L, Zhang X. Local-Curvature-Controlled Non-Epitaxial Growth of Hierarchical Nanostructures. Angew Chem Int Ed Engl 2018; 57:3772-3776. [DOI: 10.1002/anie.201713185] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 01/26/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Chaoran Li
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Shumin Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Bingchang Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Jingjing Liu
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Weihu Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Alexander A. Solovev
- Department of Materials Science; Fudan University; 220 Handan Road 200433 Shanghai PR China
| | - Rujun Tang
- Jiangsu Key Laboratory of Thin Films; College of Physics, Optoelectronics and Energy; Soochow University; Suzhou 215006 Jiangsu PR China
| | - Feng Bao
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Jia Yu
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Yeshayahu Lifshitz
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
- Department of Materials Science and Engineering; Technion-Israel Institute of Technology; Haifa 3200003 Israel
| | - Le He
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Xiaohong Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
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12
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Li C, Zhang S, Zhang B, Liu J, Zhang W, Solovev AA, Tang R, Bao F, Yu J, Zhang Q, Lifshitz Y, He L, Zhang X. Local-Curvature-Controlled Non-Epitaxial Growth of Hierarchical Nanostructures. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713185] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chaoran Li
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Shumin Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Bingchang Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Jingjing Liu
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Weihu Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Alexander A. Solovev
- Department of Materials Science; Fudan University; 220 Handan Road 200433 Shanghai PR China
| | - Rujun Tang
- Jiangsu Key Laboratory of Thin Films; College of Physics, Optoelectronics and Energy; Soochow University; Suzhou 215006 Jiangsu PR China
| | - Feng Bao
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Jia Yu
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Yeshayahu Lifshitz
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
- Department of Materials Science and Engineering; Technion-Israel Institute of Technology; Haifa 3200003 Israel
| | - Le He
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
| | - Xiaohong Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM); Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Soochow University; 199 Ren'ai Road Suzhou 215123 Jiangsu PR China
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13
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Kamp M, Soligno G, Hagemans F, Peng B, Imhof A, van Roij R, van Blaaderen A. Regiospecific Nucleation and Growth of Silane Coupling Agent Droplets onto Colloidal Particles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2017; 121:19989-19998. [PMID: 29057028 PMCID: PMC5645761 DOI: 10.1021/acs.jpcc.7b04188] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 08/16/2017] [Indexed: 06/07/2023]
Abstract
Nucleation-and-growth processes are used extensively in the synthesis of spherical colloids, and more recently regiospecific nucleation-and-growth processes have been exploited to prepare more complex colloids such as patchy particles. We demonstrate that surface geometry alone can be made to play the dominant role in determining the final particle geometry in such syntheses, meaning that intricate chemical surface patternings are not required. We present a synthesis method for "lollipop"-shaped colloidal heterodimers (patchy particles), combining a recently published nucleation-and-growth technique with our recent findings that particle geometry influences the locus of droplet adsorption onto anisotropic template particles. Specifically, 3-methacryloxypropyl trimethoxysilane (MPTMS) is nucleated and grown onto bullet-shaped and nail-shaped colloids. The shape of the template particle can be chosen such that the MPTMS adsorbs regiospecifically onto the flat ends. In particular, we find that particles with a wider base increase the range of droplet volumes for which the minimum in the free energy of adsorption is located at the flat end of the particle compared with bullet-shaped particles of the same aspect ratio. We put forward an extensive analysis of the synthesis mechanism and experimentally determine the physical properties of the heterodimers, supported by theoretical simulations. Here we numerically optimize, for the first time, the shape of finite-sized droplets as a function of their position on the rod-like silica particle surface. We expect that our findings will give an impulse to complex particle creation by regiospecific nucleation and growth.
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Affiliation(s)
- Marlous Kamp
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Giuseppe Soligno
- Institute
for Theoretical Physics, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Fabian Hagemans
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Bo Peng
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Arnout Imhof
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - René van Roij
- Institute
for Theoretical Physics, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Alfons van Blaaderen
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
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14
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Murphy RP, Hong K, Wagner NJ. Synthetic control of the size, shape, and polydispersity of anisotropic silica colloids. J Colloid Interface Sci 2017; 501:45-53. [DOI: 10.1016/j.jcis.2017.04.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 04/09/2017] [Accepted: 04/10/2017] [Indexed: 11/24/2022]
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15
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Wu Y, Luo Z, Liu B, Yang Z. Colloidal Rings by Site‐Selective Growth on Patchy Colloidal Disc Templates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704541] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuanyuan Wu
- State Key Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100149 China
| | - Zhang Luo
- State Key Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100149 China
| | - Bing Liu
- State Key Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100149 China
| | - Zhenzhong Yang
- State Key Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
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16
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Wu Y, Luo Z, Liu B, Yang Z. Colloidal Rings by Site-Selective Growth on Patchy Colloidal Disc Templates. Angew Chem Int Ed Engl 2017; 56:9807-9811. [PMID: 28675596 DOI: 10.1002/anie.201704541] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Indexed: 11/06/2022]
Abstract
Anisotropic colloidal building blocks are quite attractive as they enable the self-assembly towards new materials with designated hierarchical structures. Although many advances have been achieved in colloidal synthetic methodology, synthesis of colloidal rings with low polydispersity and on a large scale remains a challenge. To address this issue we introduce a new site-selective growth strategy, which relies on using patchy particles. For example, by using patchy discs as templates, silica can selectively be grown on only side surfaces, resulting in formation of silica rings. We demonstrate that shape parameters are tunable and find that these silica rings can be used as secondary template to synthesize other types of rings. This method for synthesizing ring-like colloids provides possibilities for studying their self-assembly and associated phase transitions, and this patchy particles template strategy paves a new route for fabricating other new colloidal particles.
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Affiliation(s)
- Yuanyuan Wu
- State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100149, China
| | - Zhang Luo
- State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100149, China
| | - Bing Liu
- State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100149, China
| | - Zhenzhong Yang
- State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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17
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Hagemans F, Vlug W, Raffaelli C, van Blaaderen A, Imhof A. Sculpting Silica Colloids by Etching Particles with Nonuniform Compositions. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2017; 29:3304-3313. [PMID: 28413261 PMCID: PMC5390506 DOI: 10.1021/acs.chemmater.7b00687] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/17/2017] [Indexed: 06/07/2023]
Abstract
We present the synthesis of new shapes of colloidal silica particles by manipulating their chemical composition and subsequent etching. Segments of silica rods, prepared by the ammonia catalyzed hydrolysis and condensation of tetraethylorthosilicate (TEOS) from polyvinylpyrrolidone loaded water droplets, were grown under different conditions. Upon decreasing temperature, delaying ethanol addition, or increasing monomer concentration, the rate of dissolution of the silica segment subsequently formed decreased. A watery solution of NaOH (∼mM) selectively etched these segments. Further tuning the conditions resulted in rod-cone or cone-cone shapes. Deliberately modulating the composition along the particle's length by delayed addition of (3-aminopropyl)-triethoxysilane (APTES) also allowed us to change the composition stepwise. The faster etching of this coupling agent in neutral conditions or HF afforded an even larger variety of particle morphologies while in addition changing the chemical functionality. A comparable step in composition was applied to silica spheres. Biamine functional groups used in a similar way as APTES caused a charge inversion during the growth, causing dumbbells and higher order aggregates to form. These particles etched more slowly at the neck, resulting in a biconcave silica ring sandwiched between two silica spheres, which could be separated by specifically etching the functionalized layer using HF.
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18
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Abstract
Morphological evolution of tadpole-like hollow silica particles, and corresponding TEM images of typical intermediate and final products.
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Affiliation(s)
- Qiyu Yu
- School of Materials Science and Engineering
- Sichuan University of Science and Engineering
- Zigong 643000
- China
| | - Kun Wang
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610064
- China
| | - Jing Zhang
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610064
- China
| | - Mingyang Liu
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610064
- China
| | - Yuanyuan Liu
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610064
- China
| | - Chao Cheng
- Modern Experiment Technology Center
- Anhui University
- Hefei 230601
- China
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19
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Datskos P, Polizos G, Cullen DA, Bhandari M, Sharma J. Synthesis of Half-Sphere/Half-Funnel-Shaped Silica Structures by Reagent Localization and the Role of Water in Shape Control. Chemistry 2016; 22:18700-18704. [DOI: 10.1002/chem.201604130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Panos Datskos
- Nanosystems, Separations, and Materials Research Group; Energy and Transportation Science Division; Oak Ridge National Laboratory; 1 Bethel Valley Road Oak Ridge TN 37831 USA
| | - Georgios Polizos
- Nanosystems, Separations, and Materials Research Group; Energy and Transportation Science Division; Oak Ridge National Laboratory; 1 Bethel Valley Road Oak Ridge TN 37831 USA
| | - David A. Cullen
- Materials Science & Technology Division; Oak Ridge National Laboratory; Oak Ridge TN 37831 USA
| | - Mahabir Bhandari
- Building Technologies Research & Integration Center (BTRIC); Oak Ridge National Laboratory; Oak Ridge TN 37831 USA
| | - Jaswinder Sharma
- Nanosystems, Separations, and Materials Research Group; Energy and Transportation Science Division; Oak Ridge National Laboratory; 1 Bethel Valley Road Oak Ridge TN 37831 USA
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20
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Murphy RP, Hong K, Wagner NJ. Thermoreversible Gels Composed of Colloidal Silica Rods with Short-Range Attractions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8424-8435. [PMID: 27466883 DOI: 10.1021/acs.langmuir.6b02107] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Dynamic arrest transitions of colloidal suspensions containing nonspherical particles are of interest for the design and processing of various particle technologies. To better understand the effects of particle shape anisotropy and attraction strength on gel and glass formation, we present a colloidal model system of octadecyl-coated silica rods, termed as adhesive hard rods (AHR), which enables control of rod aspect ratio and temperature-dependent interactions. The aspect ratios of silica rods were controlled by varying the initial TEOS concentration following the work of Kuijk et al. (J. Am. Chem. Soc., 2011, 133, 2346-2349) and temperature-dependent attractions were introduced by coating the calcined silica rods with an octadecyl-brush and suspending in tetradecane. The rod length and aspect ratio were found to increase with TEOS concentration as expected, while other properties such as the rod diameter, coating coverage, density, and surface roughness were nearly independent of the aspect ratio. Ultrasmall angle X-ray scattering measurements revealed temperature-dependent attractions between octadecyl-coated silica rods in tetradecane, as characterized by a low-q upturn in the scattered intensity upon thermal quenching. Lastly, the rheology of a concentrated AHR suspension in tetradecane demonstrated thermoreversible gelation behavior, displaying a nearly 5 orders of magnitude change in the dynamic moduli as the temperature was cycled between 15 and 40 °C. The adhesive hard rod model system serves as a tunable platform to explore the combined influence of particle shape anisotropy and attraction strength on the dynamic arrest transitions in colloidal suspensions with thermoreversible, short-range attractions.
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Affiliation(s)
- Ryan P Murphy
- Center for Molecular and Engineering Thermodynamics & Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware , Newark, Delaware 19716, United States
| | - Kunlun Hong
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Norman J Wagner
- Center for Molecular and Engineering Thermodynamics & Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware , Newark, Delaware 19716, United States
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21
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Hagemans F, van der Wee EB, van Blaaderen A, Imhof A. Synthesis of Cone-Shaped Colloids from Rod-Like Silica Colloids with a Gradient in the Etching Rate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3970-3976. [PMID: 27046046 DOI: 10.1021/acs.langmuir.6b00678] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present the synthesis of monodisperse cone-shaped silica colloids and their fluorescent labeling. Rod-like silica colloids prepared by ammonia-catalyzed hydrolysis and condensation of tetraethyl orthosilicate in water droplets containing polyvinylpyrrolidone cross-linked by citrate ions in pentanol were found to transform into cone-shaped particles upon mild etching by NaOH in water. The diameter and length of the resulting particles were determined by those of the initial rod-like silica colloids. The mechanism responsible for the cone-shape involves silica etching taking place with a varying rate along the length of the particle. Our experiments thus also lead to new insights into the variation of the local particle structure and composition. These are found to vary gradually along the length of the rod, as a result of the way the rod grows out of a water droplet that keeps itself attached to the flat end of the bullet-shaped particles. Subtle differences in composition and structure could also be resolved by high-resolution stimulated emission depletion confocal microscopy on fluorescently labeled particles. The incorporation of a fluorescent dye chemically attached to an amine-based silane coupling agent resulted in a distribution of fluorophores mainly on the outside of the rod-shaped particles. In contrast, incorporation of the silane coupling agent alone resulted in a homogeneous distribution. Additionally, we show that etching rods, where a silane coupling agent alone was incorporated and subsequently coupled to a fluorescent dye, resulted in fluorescent silica cones, the orientation of which can be discerned using super-resolution confocal microscopy.
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Affiliation(s)
- Fabian Hagemans
- Soft Condensed Matter, Debye Institute for NanoMaterials Science, Utrecht University , Princetonplein 1, 3584 CC Utrecht, Netherlands
| | - Ernest B van der Wee
- Soft Condensed Matter, Debye Institute for NanoMaterials Science, Utrecht University , Princetonplein 1, 3584 CC Utrecht, Netherlands
| | - Alfons van Blaaderen
- Soft Condensed Matter, Debye Institute for NanoMaterials Science, Utrecht University , Princetonplein 1, 3584 CC Utrecht, Netherlands
| | - Arnout Imhof
- Soft Condensed Matter, Debye Institute for NanoMaterials Science, Utrecht University , Princetonplein 1, 3584 CC Utrecht, Netherlands
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22
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Yang Y, Chen G, Martinez-Miranda LJ, Yu H, Liu K, Nie Z. Synthesis and Liquid-Crystal Behavior of Bent Colloidal Silica Rods. J Am Chem Soc 2016; 138:68-71. [PMID: 26700616 PMCID: PMC6033542 DOI: 10.1021/jacs.5b11546] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The design and assembly of novel colloidal particles are of both academic and technological interest. We developed a wet-chemical route to synthesize monodisperse bent rigid silica rods by controlled perturbation of emulsion-templated growth. The bending angle of the rods can be tuned in a range of 0-50° by varying the strength of perturbation in the reaction temperature or pH in the course of rod growth. The length of each arm of the bent rods can be individually controlled by adjusting the reaction time. For the first time we demonstrated that the bent silica rods resemble banana-shaped liquid-crystal molecules and assemble into ordered structures with a typical smectic B2 phase. The bent silica rods could serve as a visualizable mesoscopic model for exploiting the phase behaviors of bent molecules which represent a typical class of liquid-crystal molecules.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Guangdong Chen
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Luz J. Martinez-Miranda
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Hua Yu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Kun Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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23
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Zhao B, Li D, Long Y, Yang G, Tung CH, Song K. Modification of colloidal particles by unidirectional silica deposition for urchin-like morphologies. RSC Adv 2016. [DOI: 10.1039/c6ra01693f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Silica rods were grown onto the surface of various colloidal particles, resulting in urchin-like morphologies.
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Affiliation(s)
- Bin Zhao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Dongzhi Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yue Long
- Laboratory of Bio-Inspired Smart Interface Sciences
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- China
| | - Guoqiang Yang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Kai Song
- Laboratory of Bio-Inspired Smart Interface Sciences
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- China
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24
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Datskos P, Polizos G, Bhandari M, Cullen DA, Sharma J. Colloidosome like structures: self-assembly of silica microrods. RSC Adv 2016. [DOI: 10.1039/c5ra25817k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-assembly of micron-sized silica rods is demonstrated using a Pickering emulsion based strategy.
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Affiliation(s)
- P. Datskos
- Nanosystems, Separations, and Materials Research Group
- Energy and Transportation Science Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - G. Polizos
- Nanosystems, Separations, and Materials Research Group
- Energy and Transportation Science Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - M. Bhandari
- Building Technology Research & Integration Center
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - D. A. Cullen
- Material Science and Technology Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - J. Sharma
- Nanosystems, Separations, and Materials Research Group
- Energy and Transportation Science Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
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25
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Zhao B, Zhou H, Liu C, Long Y, Yang G, Tung CH, Song K. Fabrication and directed assembly of magnetic Janus rods. NEW J CHEM 2016. [DOI: 10.1039/c6nj00825a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Varied morphologies and aspect ratios of magnetic Janus rods have been synthesized via a wet-chemical method.
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Affiliation(s)
- Bin Zhao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hui Zhou
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chuanyong Liu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yue Long
- Laboratory of Bio-Inspired Smart Interface Sciences
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- China
| | - Guoqiang Yang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Kai Song
- Laboratory of Bio-Inspired Smart Interface Sciences
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- China
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26
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Longbottom BW, Rochford LA, Beanland R, Bon SAF. Mechanistic Insight into the Synthesis of Silica-Based "Matchstick" Colloids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9017-9025. [PMID: 26256207 DOI: 10.1021/acs.langmuir.5b02645] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report an insight into the synthesis of silica-based "matchstick"-shaped colloidal particles, which are of interest in the area of self-propulsion on small length scales. The generation of aqueous emulsion droplets dispersed in an n-pentanol-rich continuous phase and their use as reaction centers allows for the fabrication of siliceous microparticles that exhibit anisotropy in both particle morphology, that is, a "matchstick" shape, and chemistry, that is, a transition-metal oxide-enriched head. We provide a series of kinetic studies to gain a mechanistic understanding and unravel the particle formation and growth processes. Additionally, we demonstrate the ability to select the aspect ratio of the "matchstick" particle in a straightforward manner.
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Affiliation(s)
- Brooke W Longbottom
- The Department of Chemistry, and ‡The Department of Physics, The University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Luke A Rochford
- The Department of Chemistry, and ‡The Department of Physics, The University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Richard Beanland
- The Department of Chemistry, and ‡The Department of Physics, The University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Stefan A F Bon
- The Department of Chemistry, and ‡The Department of Physics, The University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
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27
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Datskos P, Cullen DA, Sharma J. Step-by-Step Growth of Complex Oxide Microstructures. Angew Chem Int Ed Engl 2015; 54:9011-5. [DOI: 10.1002/anie.201503777] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Indexed: 11/06/2022]
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28
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Datskos P, Cullen DA, Sharma J. Step‐by‐Step Growth of Complex Oxide Microstructures. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503777] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Panos Datskos
- Nanosystems, Separations, and Materials Research Group, Energy and Transportation Science Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831 (USA)
| | - David A. Cullen
- Material Science and Technology Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831 (USA)
| | - Jaswinder Sharma
- Nanosystems, Separations, and Materials Research Group, Energy and Transportation Science Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831 (USA)
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29
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Datskos P, Chen J, Sharma J. Synthesis of very small diameter silica nanofibers using sound waves. Chem Commun (Camb) 2014; 50:7277-9. [DOI: 10.1039/c4cc03206c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silica nanofibers of an average diameter of 30 nm were synthesized using sound waves.
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Affiliation(s)
- Panos Datskos
- Nanosystems, Separations, and Materials Research Group, Energy and Transportation Science Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA.
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