1
|
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.
Collapse
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
| |
Collapse
|
2
|
Mu Y, Duan W, Dai Y, Sullivan PA, Deravi LF, Wang Y, Lee D. Colloidal synthesis of metallodielectric Janus matchsticks. Chem Commun (Camb) 2024; 60:5534-5537. [PMID: 38695749 DOI: 10.1039/d4cc00488d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
We present a gram-scale synthesis of metallodielectric Janus matchsticks, which feature a gold-coated silica sphere and a silica rod. SiO2 Janus matchsticks are synthesized in one batch by growing amine-functionalized SiO2 spheres at the end of SiO2 rods. Gold deposition on the spheres produces Au-SiO2 Janus matchsticks with an aspect ratio controlled by the rod length. The metallodielectric Janus matchsticks, produced by scalable colloidal synthesis, hold great potential as functional colloidal materials.
Collapse
Affiliation(s)
- Yijiang Mu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
| | - Wendi Duan
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yuxuan Dai
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
| | - Patrick A Sullivan
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Leila F Deravi
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Yufeng Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
| |
Collapse
|
3
|
Long Y, Wu Q, Jiang C, Zhang G, Liang F. Anisotropic Multitentacle Janus Particles Synthesized by Selective Asymmetric Growth. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307203. [PMID: 37939294 DOI: 10.1002/smll.202307203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/22/2023] [Indexed: 11/10/2023]
Abstract
Anisotropic colloidal particles with asymmetric morphology possess functionally rich heterogeneous structures, thus offering potential for intricate superstructures or nanodevices. However, it is a challenge to achieve controlled asymmetric surface partitioned growth. In this work, an innovative strategy is developed based on the selective adsorption and growth of emulsion droplets onto different regions of object which is controlled by wettability. It is found that the emulsion droplets can selectively adsorb on the hydrophilic surface but not the hydrophobic one, and further form asymmetric tentacle by the interfacial sol-gel process along its trajectory. Janus particles with an anisotropic shape and multitentacle structure are achieved via integration of emulsion droplet (soft) and seed (hard) templates. The size and number of tentacles exhibit tunability mediated by soft and hard templates, respectively. This general strategy can be expanded to a variety of planar substrates or curved particles, further confirming the correlation between tentacle growth and Brownian motion. Most interestingly, it can be employed to selectively modify one region of surface partitioned particles to achieve an ABC three-component Janus structure.
Collapse
Affiliation(s)
- Yingchun Long
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Qiuhua Wu
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Chao Jiang
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Guolin Zhang
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China
| | - Fuxin Liang
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| |
Collapse
|
4
|
Long Y, Wu Q, Zuo X, Zhang G, Zhang Z, Yang Z, Liang F. Flask-like Janus Colloidal Motors with Explicit Direction and Tunable Speed. ACS NANO 2022; 16:16690-16698. [PMID: 36251358 DOI: 10.1021/acsnano.2c06235] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Nanoparticles with an anisotropic morphology and composition are flourishing in various scientific fields. Their morphology has a great impact on their functions, but the precise regulation of their growth and final morphology is still challenging. Here, flask-like Janus particles (FJPs) with different compositions segmented on the inner and outer surfaces were fabricated via a sol-gel process using different silane precursors. The neck length of the flask-like particles can be controllably regulated by employing different silane precursors. The Pt catalyst was selectively loaded in their cavities, and as-formed FJPs@Pt are employed as colloidal motors. Due to the adjustable neck length, the Janus colloidal motors have explicit directionality and tunable speeds (max diffusion coefficient is 18.2 μm2 s-1).
Collapse
Affiliation(s)
- Yingchun Long
- Department of Chemical Engineering, Tsinghua University, Beijing100084, P.R. China
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang110036, P.R. China
| | - Qiuhua Wu
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang110036, P.R. China
| | - Xiuyuan Zuo
- Department of Chemical Engineering, Tsinghua University, Beijing100084, P.R. China
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang110036, P.R. China
| | - Guolin Zhang
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang110036, P.R. China
| | - Zexin Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou215123, P.R. China
| | - Zhenzhong Yang
- Department of Chemical Engineering, Tsinghua University, Beijing100084, P.R. China
| | - Fuxin Liang
- Department of Chemical Engineering, Tsinghua University, Beijing100084, P.R. China
| |
Collapse
|
5
|
Wang H, Hou W, Liu Y, Liu L, Zhao H. Janus Surface Micelles on Silica Particles: Synthesis and Application in Enzyme Immobilization. Macromol Rapid Commun 2020; 42:e2000589. [PMID: 33270313 DOI: 10.1002/marc.202000589] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/03/2020] [Indexed: 12/20/2022]
Abstract
In these years, synthesis and applications of Janus structures have aroused great interest for large-scale applications in chemistry and materials science. Up to now, Janus particles with different morphologies and different functionalities have been synthesized in solutions, but the synthesis of Janus particles on solid surfaces has not been touched. In this research, Janus surface micelles (JSMs) are fabricated on the surfaces of silica particles by polymerization induced surface self-assembly (PISSA) approach, and the JSMs are used for enzyme immobilization. Usually, enzyme immobilization should be able to optimize the performance of the immobilized enzymes, and an ideal immobilization system must offer protection to the immobilized enzyme with retained bioactivity. Herein, it is demonstrated that JSMs on silica particles can be used as an ideal platform for the immobilization of enzymes. To prepare JSMs, poly(2-(dimethylamino) ethyl methacrylate) macro chain transfer agent (PDMAEMA-CTA) brushes on silica particles and poly(di(ethylene glycol) methyl ether methacrylate) macro CTA (PDEGMA-CTA) are employed in reversible addition-fragmentation chain transfer dispersion polymerization of styrene. After polymerization, JSMs with polystyrene cores and PDMAEMA/PDEGMA patches on the surfaces are prepared on silica particles. After quaternization reaction, the quaternized PDMAEMA patches are used for the immobilization of enzymes. Experimental results turn out that enhanced bioactivities of the immobilized enzymes are achieved and the enzyme molecules are well protected by surface Janus structures.
Collapse
Affiliation(s)
- Huan Wang
- Ministry of Education, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| | - Wangmeng Hou
- Ministry of Education, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| | - Yingze Liu
- Ministry of Education, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| | - Li Liu
- Ministry of Education, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| | - Hanying Zhao
- Ministry of Education, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
| |
Collapse
|
6
|
Xiang SY, Ye LSY, Huang YJ, Lv YD, Kong MQ, Li GX. Coalescence Suppression in Flowing Polymer Blends Using Silica Rods with Different Surface Chemistries. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-021-2526-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
7
|
Gomez-Flores A, Bradford SA, Hwang G, Choi S, Tong M, Kim H. Shape and orientation of bare silica particles influence their deposition under intermediate ionic strength: A study with QCM–D and DLVO theory. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124921] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
8
|
Shape anisotropic colloidal particle fabrication using 2-photon polymerization. J Colloid Interface Sci 2019; 564:43-51. [PMID: 31901833 DOI: 10.1016/j.jcis.2019.12.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 12/07/2019] [Accepted: 12/08/2019] [Indexed: 02/08/2023]
Abstract
HYPOTHESIS Our ability to dictate the colloid geometry is intimately related to self-assembly. The synthesis of anisotropic colloidal particles is currently dominated by wet chemistry and lithographic techniques. The wet chemical synthesis offers limited particle geometries at bulk quantities. Lithographic techniques, on the other hand, provide precise control over the particle shape, although at lower yields. In this respect, two-photon polymerization (2PP)1 has attracted growing attention due to its ability to automatically fabricate complex micro/nano structures with high resolution. EXPERIMENTS We manufacture precisely designed colloids with sizes ranging from 1 µm to 10 µm with 2PP and optimize the process parameters for each dimension. Moreover, we study the shape dependent Brownian motion of these particles with video microscopy and estimate their diffusion coefficients. FINDINGS We observe that increasing the geometrical anisotropy leads to a pronounced deviation from the analytically predicted diffusion coefficient for disks with a given aspect ratio. The deviation is attributed to stronger hydrodynamic coupling with increasing anisotropy. We demonstrate, for the first time, 2PP manufacturing of colloids with tailored geometry. This study opens synthesis of colloidal building blocks to a broader audience with limited access to cleanrooms or wet-chemistry know-how.
Collapse
|
9
|
Zhao B, Li D, Long Y, Song K. Precisely Endowing Colloidal Particles with Silica Branches. Sci Rep 2019; 9:8591. [PMID: 31197202 PMCID: PMC6565735 DOI: 10.1038/s41598-019-44742-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 09/11/2018] [Indexed: 11/13/2022] Open
Abstract
A method to modify colloidal particles with silica rods in a water/n-pentanol system is reported here. Because of the interfacial tension between aqueous and n-pentanol phase, water which surrounds the colloidal particles de-wets into droplets during the deposition process of silica. As a result of unidirectional deposition, silica rods grow perpendicularly on the surface of the colloidal particles at the site of the smallest curvature where the water droplet has been de-wetted. By controlling the hydrolysis conditions, particles with certain number of branches or rambutan-like particles can be obtained. This approach opens a path towards the higher levels of colloidal complexity.
Collapse
Affiliation(s)
- Bin Zhao
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Environmental Monitoring Station of Chenghua District of Chengdu, 610056, Chengdu, China
| | - Dongzhi Li
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Yue Long
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
| | - Kai Song
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
| |
Collapse
|
10
|
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.
Collapse
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.
| | | | | | | | | | | |
Collapse
|
11
|
Yang Y, Chen G, Thanneeru S, He J, Liu K, Nie Z. Synthesis and assembly of colloidal cuboids with tunable shape biaxiality. Nat Commun 2018; 9:4513. [PMID: 30375393 PMCID: PMC6207716 DOI: 10.1038/s41467-018-06975-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 10/01/2018] [Indexed: 12/13/2022] Open
Abstract
The design and assembly of monodisperse colloidal particles not only advances the development of functional materials, but also provides colloidal model systems for understanding phase behaviors of molecules. This communication describes the gram-scale synthesis of highly uniform colloidal cuboids with tunable dimension and shape biaxiality and their molecular mesogen-like assembly into various mesophasic structures in pristine purity. The synthesis relies on the nanoemulsion-guided generation of ammonium sulfate crystals that template the subsequent silica coating. The shape of the cuboidal particles can be tuned from square platelike, to biaxial boardlike, and to rodlike by independently controlling the length, width and thickness of the particles. We demonstrated the assembly of the cuboidal colloids into highly pure mesoscopic liquid crystal phases, including smectic A, biaxial smectic A, crystal B, discotic, and columnar phases, as well as established a correlation between mesophasic formation and colloidal biaxiality in experiments.
Collapse
Affiliation(s)
- Yang Yang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Guangdong Chen
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Srinivas Thanneeru
- Department of Chemistry, Institute of Materials Sciences, University of Connecticut, Storrs, CT, 06269, USA
| | - Jie He
- Department of Chemistry, Institute of Materials Sciences, University of Connecticut, Storrs, CT, 06269, USA
| | - 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, MD, 20742, USA.
| |
Collapse
|
12
|
Perumal M, Soundarajan B, Thazhathuveettil Vengara N. Extraction of Cr (VI) by pickering emulsion liquid membrane using amphiphilic silica nanowires (ASNWs) as a surfactant. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1496829] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Murugan Perumal
- Department of Chemical Engineering, National Institute of Technology Calicut , Kozhikode , Kerala , India
| | - Bhuvaneshwari Soundarajan
- Department of Chemical Engineering, National Institute of Technology Calicut , Kozhikode , Kerala , India
| | | |
Collapse
|
13
|
Lai B, Mei F, Gu Y. Bifunctional Solid Catalyst for Organic Reactions in Water: Simultaneous Anchoring of Acetylacetone Ligands and Amphiphilic Ionic Liquid "Tags" by Using a Dihydropyran Linker. Chem Asian J 2018; 13:2529-2542. [PMID: 29873190 DOI: 10.1002/asia.201800567] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/17/2018] [Indexed: 01/18/2023]
Abstract
The use of solid catalysts to promote organic reactions in water faces the inherent difficulty of the poor mass-transfer efficiency of organic substances in water, which is often responsible for insufficient reaction and low yields. To solve this problem, the solid surface can be manipulated to become amphiphilic. However, the introduction of surfactant-like moieties onto the surface of silica-based materials is not easy. By using an accessible dihydropyran derivative as a grafting linker, a surfactant-combined bifunctional silica-based solid catalyst that possessed an ionic liquid tail and a metal acetylacetonate moiety was prepared through a mild Lewis-acid-catalyzed ring-opening reaction with a thiol-functionalized silica. The surfactant-combined silica-supported metal acetylacetone catalysts displayed excellent catalytic activity in water for a range of reactions. The solid catalyst was also shown to be recyclable, and was reused several times without significant loss in activity.
Collapse
Affiliation(s)
- Bingbing Lai
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Hongshan District, Wuhan, 430074, P. R. China
| | - Fuming Mei
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Hongshan District, Wuhan, 430074, P. R. China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Hongshan District, Wuhan, 430074, P. R. China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| |
Collapse
|
14
|
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.
Collapse
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
| |
Collapse
|
15
|
Sun X, Chen M, Zhang Y, Yin Y, Zhang L, Li H, Hao J. Photoluminescent and pH-responsive supramolecular structures from co-assembly of carbon quantum dots and zwitterionic surfactant micelles. J Mater Chem B 2018; 6:7021-7032. [DOI: 10.1039/c8tb00630j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Mixing negatively charged carbon quantum dots with a zwitterionic surfactant in water produces a variety of supramolecular structures, which are photoluminescent and show a reversible response to pH.
Collapse
Affiliation(s)
- Xiaofeng Sun
- State Key Laboratory of Solid Lubrication & Laboratory of Clean Energy Chemistry and Materials
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Mengjun Chen
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of education
- Jinan
- China
| | - Yiqiang Zhang
- State Key Laboratory of Solid Lubrication & Laboratory of Clean Energy Chemistry and Materials
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Yanji Yin
- State Key Laboratory of Solid Lubrication & Laboratory of Clean Energy Chemistry and Materials
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Linwen Zhang
- State Key Laboratory of Solid Lubrication & Laboratory of Clean Energy Chemistry and Materials
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Hongguang Li
- State Key Laboratory of Solid Lubrication & Laboratory of Clean Energy Chemistry and Materials
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of education
- Jinan
- China
| |
Collapse
|
16
|
Teng B, Han Y, Zhang X, Xiao H, Yu C, Li H, Cheng Z, Jin D, Wong KL, Ma P, Lin J. Phenanthriplatin(iv) conjugated multifunctional up-converting nanoparticles for drug delivery and biomedical imaging. J Mater Chem B 2018; 6:5059-5068. [DOI: 10.1039/c8tb01034j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Platinum-based drugs cisplatin, carboplatin, and oxaliplatin are widely used in the clinical treatment of cancer.
Collapse
|
17
|
Kim J, Choi CH, Yeom SJ, Eom N, Kang KK, Lee CS. Directed Assembly of Janus Cylinders by Controlling the Solvent Polarity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7503-7511. [PMID: 28672112 DOI: 10.1021/acs.langmuir.7b01252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study demonstrates the possibility of controlling the directed self-assembly of microsized Janus cylinders by changing the solvent polarity of the assembly media. Experimental results are analyzed and theoretical calculations of the free energy of adhesion (ΔGad) are performed to elucidate the underlying basic principles and investigate the effects of the solvent on the self-assembled structures. This approach will pave a predictive route for controlling the structures of assembly depending on the solvent polarity. In particular, we find that a binary solvent system with precisely controlled polarity induces directional assembly of the microsized Janus cylinders. Thus, the formation of two-dimensional (2D) and three-dimensional (3D) assembled clusters can be reliably tuned by controlling the numbers of constituent Janus cylinders in a binary solvent system. Finally, this approach is expanded to stepwise assembly, which forms unique microstructures via secondary growth of primary seed clusters formed by the Janus cylinders. We envision that this investigation is highly promising for the construction of desired superstructures using a wide variety of polymeric Janus microparticles with chemical and physical multicompartments.
Collapse
Affiliation(s)
- Jongmin Kim
- Department of Chemical Engineering, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Chang-Hyung Choi
- Department of Chemical Engineering, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Su-Jin Yeom
- Department of Chemical Engineering, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Naye Eom
- Department of Chemical Engineering, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Kyoung-Ku Kang
- Department of Chemical Engineering, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Chang-Soo Lee
- Department of Chemical Engineering, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| |
Collapse
|
18
|
Abstract
Morphological evolution of tadpole-like hollow silica particles, and corresponding TEM images of typical intermediate and final products.
Collapse
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
| |
Collapse
|
19
|
Rosu C, Jacobeen S, Park K, Reichmanis E, Yunker P, Russo PS. Domed Silica Microcylinders Coated with Oleophilic Polypeptides and Their Behavior in Lyotropic Cholesteric Liquid Crystals of the Same Polypeptide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13137-13148. [PMID: 27951711 DOI: 10.1021/acs.langmuir.6b03165] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Liquid crystals can organize dispersed particles into useful and exotic structures. In the case of lyotropic cholesteric polypeptide liquid crystals, polypeptide-coated particles are appealing because the surface chemistry matches that of the polymeric mesogen, which permits a tighter focus on factors such as extended particle shape. The colloidal particles developed here consist of a magnetic and fluorescent cylindrically symmetric silica core with one rounded, almost hemispherical end. Functionalized with helical poly(γ-stearyl-l-glutamate) (PSLG), the particles were dispersed at different concentrations in cholesteric liquid crystals (ChLC) of the same polymer in tetrahydrofuran (THF). Defects introduced by the particles to the director field of the bulk PSLG/THF host led to a variety of phases. In fresh mixtures, the cholesteric mesophase of the PSLG matrix was distorted, as reflected in the absence of the characteristic fingerprint pattern. Over time, the fingerprint pattern returned, more quickly when the concentration of the PSLG-coated particles was low. At low particle concentration the particles were "guided" by the PSLG liquid crystal to organize into patterns similar to that of the re-formed bulk chiral nematic phase. When their concentration increased, the well-dispersed PSLG-coated particles seemed to map onto the distortions in the bulk host's local director field. The particles located near the glass vial-ChLC interfaces were stacked lengthwise into architectures with apparent two-dimensional hexagonal symmetry. The size of these "crystalline" structures increased with particle concentration. They displayed remarkable stability toward an external magnetic field; hydrophobic interactions between the PSLG polymers in the shell and those in the bulk LC matrix may be responsible. The results show that bio-inspired LCs can assemble suitable colloidal particles into soft crystalline structures.
Collapse
Affiliation(s)
| | | | - Katherine Park
- Molecular Vista, Inc., 6840 Via Del Oro, Suite 110, San Jose, California 95119, United States
| | | | | | | |
Collapse
|
20
|
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
| |
Collapse
|
21
|
Müller N, Heinrich C, Abersfelder K, Kickelbick G. Janus-Partikel. CHEM UNSERER ZEIT 2016. [DOI: 10.1002/ciuz.201600730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
22
|
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.
Collapse
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
| |
Collapse
|
23
|
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.
Collapse
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
| |
Collapse
|
24
|
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.
Collapse
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
| |
Collapse
|
25
|
Yan H, Zhao B, Long Y, Zheng L, Tung CH, Song K. New pickering emulsions stabilized by silica nanowires. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.07.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
26
|
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.
Collapse
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
| |
Collapse
|
27
|
Li D, Zhao B, Long Y, Yang G, Tung CH, Song K. Preparation and enhanced catalytic activity of amphiphilic rambutan-like micro-reactors. RSC Adv 2015. [DOI: 10.1039/c5ra14679h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The catalytic activity of amphiphilic rambutan-like micro-reactors in biphasic environments is shown.
Collapse
Affiliation(s)
- Dongzhi Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Bin Zhao
- 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
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Kai Song
- Laboratory of Bio-Inspired Smart Interface Sciences
- Technical Institute of Physics and Chemistry
- Chinese Academy of Science
- Beijing 100190
- China
| |
Collapse
|
28
|
Peng B, Soligno G, Kamp M, de Nijs B, de Graaf J, Dijkstra M, van Roij R, van Blaaderen A, Imhof A. Site-specific growth of polymers on silica rods. SOFT MATTER 2014; 10:9644-9650. [PMID: 25356961 DOI: 10.1039/c4sm01989j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Colloids specifically developed for self-assembly (SA) into advanced functional materials have rapidly become more complex, as this complexity allows for more ways to optimize both the SA process and the properties of the resulting materials. For instance, by creating 'patchy' particles more open structures can be achieved through directional interactions. However, the number of ways in which site-specific chemistry can be achieved on particle surfaces is still limited. Here, we show how polymer patches can be specifically grown onto only the flat end of bullet-shaped silica rods by utilizing a subtle anisotropy in surface tension and shape caused by the growth mechanism of the rods. Conversely, if the bullet-shaped silica rods are used as 'Pickering-emulsion' stabilizers the same surface tension effects exclusively direct the orientation of the rods into a 'hedgehog-morphology'. Finally, we demonstrate how an external electric field can direct the particles in a 'vectorial' way.
Collapse
Affiliation(s)
- Bo Peng
- Soft Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands.
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Guo Z, Zheng X, Tian D, Song Y, Zhai J, Zhang X, Li W, Wang X, Dou S, Jiang L. Photoelectric cooperative patterning of liquid permeation on the micro/nano hierarchically structured mesh film with low adhesion. NANOSCALE 2014; 6:12822-12827. [PMID: 25226032 DOI: 10.1039/c4nr03496a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Stimuli-responsive surface wettability has been intensively studied, especially wettability controlled by photoelectric cooperation, which appears to be a trend for more effective surface wetting. In this field, the patterning of controllable surface wettability is still a challenge in the application of liquid-printing techniques because of the high adhesion and high responsive voltage, as well as low mechanical strength, of the substrate. Herein, we have demonstrated the patterning of liquid permeation controlled by photoelectric cooperative wetting on the micro/nano hierarchically structured ZnO mesh film. The special micro/nano hierarchically structured ZnO mesh is beneficial for lowering adhesion force on the mesh surface than those of the TiO2/AAO nanopore array films previously reported for the discontinuous tri-phase contact line, in addition to precisely controlled microscale liquid movement with considerably lower threshold voltage for the hierarchical structure. Moreover, the stainless-steel mesh with different pore sizes as a substrate behaves with higher mechanical strength and lower cost, compared with the anodized Ti mesh. Thus, this work is promising for accelerating the development of patterned liquid permeation and extending the application of micro/nanofluidic system and micronanoelectronic technology.
Collapse
Affiliation(s)
- Zhenyan Guo
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, P. R. China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Synthesis of worm-like superparamagnetic P(St-AA)@Fe3O4/SiO2 Janus composite particles. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3191-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
31
|
Datskos P, Chen J, Sharma J. Addressable morphology control of silica structures by manipulating the reagent addition time. RSC Adv 2014. [DOI: 10.1039/c3ra46464d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
32
|
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.
Collapse
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.
| | | | | |
Collapse
|
33
|
Luo W, Lorger S, Wang B, Bommier C, Ji X. Facile synthesis of one-dimensional peapod-like Sb@C submicron-structures. Chem Commun (Camb) 2014; 50:5435-7. [DOI: 10.1039/c4cc01326c] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
34
|
Datskos P, Sharma J. Synthesis of segmented silica rods by regulation of the growth temperature. Angew Chem Int Ed Engl 2013; 53:451-4. [PMID: 24272918 DOI: 10.1002/anie.201308140] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 10/11/2013] [Indexed: 11/10/2022]
Abstract
The control of the diameter of colloidal structures is of fundamental interest and practical importance. We synthesized segmented silica rods by regulating the reaction temperature while the rods were growing. With higher growth temperatures, the segment diameter became smaller. Longer incubation times gave longer segments at the same temperature. Similarly, high temperature for the same incubation time gave longer segments. It appears that the correlation between temperature and diameter results from the relation between temperature and the size of the emulsion droplet, that is, the higher the temperature, the smaller the emulsion droplet.
Collapse
Affiliation(s)
- Panos Datskos
- Nanosystems, Separations and Materials Research Group, Energy and Transportation Science Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, MS: 6054, Oak Ridge, TN 37831 (USA)
| | | |
Collapse
|
35
|
Datskos P, Sharma J. Synthesis of Segmented Silica Rods by Regulation of the Growth Temperature. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308140] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
36
|
Affiliation(s)
- Wei Li
- Key Laboratory of Advanced
Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Bojun Dong
- Key Laboratory of Advanced
Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Li-Tang Yan
- Key Laboratory of Advanced
Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| |
Collapse
|
37
|
He J, Liu Y, Hood TC, Zhang P, Gong J, Nie Z. Asymmetric organic/metal(oxide) hybrid nanoparticles: synthesis and applications. NANOSCALE 2013; 5:5151-5166. [PMID: 23400298 DOI: 10.1039/c3nr34014g] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Asymmetric particles (APs) with broken centrosymmetry are of great interest, due to the asymmetric surface properties and diverse functionalities. In particular, organic/metal(oxide) APs naturally combine the significantly different and complementary properties of organic and inorganic species, leading to their unique applications in various fields. In this review article, we highlighted recent advances in the synthesis and applications of organic/metal(oxide) APs. This type of APs is grounded on chemical or physical interactions between metal(oxide) NPs and organic small molecular or polymeric ligands. The synthetic methodologies were summarized in three categories, including the selective surface modifications, phase separation of mixed ligands on the surface of metal(oxide) NPs, and direct synthesis of APs. We further discussed the unique applications of organic/metal(oxide) APs in self-assembly, sensors, catalysis, and biomedicine, as a result of the distinctions between asymmetrically distributed organic and inorganic components. Finally, challenges and future directions are discussed in an outlook section.
Collapse
Affiliation(s)
- Jie He
- Department of Chemistry and Biochemistry, University of Maryland, College park, MD 20742, USA
| | | | | | | | | | | |
Collapse
|
38
|
Yi GR, Pine DJ, Sacanna S. Recent progress on patchy colloids and their self-assembly. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:193101. [PMID: 23611897 DOI: 10.1088/0953-8984/25/19/193101] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
'Patchy colloids' is a term that has been recently introduced to indicate specially engineered particles with directional interactions. Based on this concept, a 'bottom-up' process for fabricating functional materials and devices has been envisioned, which employs colloidal building blocks and mimics molecular bonding. This article reviews recent progress which has been made in the synthesis and self-assembly of patchy colloids and discusses future directions as well as unresolved challenges.
Collapse
Affiliation(s)
- Gi-Ra Yi
- Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
| | | | | |
Collapse
|
39
|
Jiang J, Liu Y, Gong Y, Shu Q, Yin M, Liu X, Chen M. pH-induced outward movement of star centers within coumarin-centered star-block polymer micelles. Chem Commun (Camb) 2012; 48:10883-5. [PMID: 23033171 DOI: 10.1039/c2cc35680e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel coumarin-centered amphiphilic star-block polymer of C-(PDMAEMA(80)-b-PS(8))(3) has been designed to investigate the pH-induced accompanying outward movement of hydrophobic coumarin centers within the polymer micelles upon protonation.
Collapse
Affiliation(s)
- Jinqiang Jiang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi, 710062, China.
| | | | | | | | | | | | | |
Collapse
|
40
|
He J, Liu Y, Babu T, Wei Z, Nie Z. Self-Assembly of Inorganic Nanoparticle Vesicles and Tubules Driven by Tethered Linear Block Copolymers. J Am Chem Soc 2012; 134:11342-5. [DOI: 10.1021/ja3032295] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jie He
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742,
United States
| | - Yijing Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742,
United States
| | - Taarika Babu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742,
United States
| | - Zengjiang Wei
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742,
United States
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742,
United States
| |
Collapse
|