1
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Zhang T, Lyu D, Xu W, Feng X, Ni R, Wang Y. Janus particles with tunable patch symmetry and their assembly into chiral colloidal clusters. Nat Commun 2023; 14:8494. [PMID: 38129397 PMCID: PMC10739893 DOI: 10.1038/s41467-023-44154-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023] Open
Abstract
Janus particles, which have an attractive patch on the otherwise repulsive surface, have been commonly employed for anisotropic colloidal assembly. While current methods of particle synthesis allow for control over the patch size, they are generally limited to producing dome-shaped patches with a high symmetry (C∞). Here, we report on the synthesis of Janus particles with patches of various tunable shapes, having reduced symmetries ranging from C2v to C3v and C4v. The Janus particles are synthesized by partial encapsulation of an octahedral metal-organic framework particle (UiO-66) in a polymer matrix. The extent of encapsulation is precisely regulated by a stepwise, asymmetric dewetting process that exposes selected facets of the UiO-66 particle. With depletion interaction, the Janus particles spontaneously assemble into colloidal clusters reflecting the particles' shapes and patch symmetries. We observe the formation of chiral structures, whereby chirality emerges from achiral building blocks. With the ability to encode symmetry and directional bonding information, our strategy could give access to more complex colloidal superstructures through assembly.
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Affiliation(s)
- Tianran Zhang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Dengping Lyu
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Wei Xu
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Xuan Feng
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, Singapore
| | - Ran Ni
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, Singapore.
| | - Yufeng Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
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2
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Baran Ł, Borówko M, Rżysko W, Smołka J. Amphiphilic Janus Particles Confined in Symmetrical and Janus-Like Slits. ACS OMEGA 2023; 8:18863-18873. [PMID: 37273616 PMCID: PMC10233691 DOI: 10.1021/acsomega.3c01180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/04/2023] [Indexed: 06/06/2023]
Abstract
We use Monte Carlo simulations to investigate the behavior of Janus spheres composed of attractive and repulsive parts confined between two parallel solid surfaces. The slits with identical and competing walls are studied. The adsorption isotherms of Janus particles are determined, and the impact of the density in the pore on the morphology is discussed in detail. So far, this issue has not been systematically investigated. New, unique structures are observed along the isotherms, including the bilayer and three-layer structures located at different distances from the walls. We analyze how selected parameters affect the positional and orientational ordering in these layers. In some cases, the particles form highly ordered hexagonal lattices.
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Affiliation(s)
- Łukasz Baran
- Department
of Theoretical Chemistry, Institute of Chemical Sciences, Faculty
of Chemistry, Maria Curie-Sklodowska University in Lublin, Pl. M Curie-Sklodowskiej 3, 20-031 Lublin, Poland
| | - Małgorzata Borówko
- Department
of Theoretical Chemistry, Institute of Chemical Sciences, Faculty
of Chemistry, Maria Curie-Sklodowska University in Lublin, Pl. M Curie-Sklodowskiej 3, 20-031 Lublin, Poland
| | - Wojciech Rżysko
- Department
of Theoretical Chemistry, Institute of Chemical Sciences, Faculty
of Chemistry, Maria Curie-Sklodowska University in Lublin, Pl. M Curie-Sklodowskiej 3, 20-031 Lublin, Poland
| | - Jakub Smołka
- Department
of Computer Science, Lublin University of
Technology, Nadbystrzycka 36B, 20-618 Lublin, Poland
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3
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Kennedy CL, Sayasilpi D, Schall P, Meijer JM. Self-assembly of colloidal cube superstructures with critical Casimir attractions. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:214005. [PMID: 35203069 DOI: 10.1088/1361-648x/ac5866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
The structure of self-assembled materials is determined by the shape and interactions of the building blocks. Here, we investigate the self-assembly of colloidal 'superballs', i.e. cubes with rounded corners, by temperature-tunable critical Casimir forces to obtain insight into the coupling of a cubic shape and short range attractions. The critical Casimir force is a completely reversible and controllable attraction that arises in a near-critical solvent mixture. Using confocal microscopy and particle tracking, we follow the self-assembly dynamics and structural transition in a quasi-2D system. At low attraction, we observe the formation of small clusters with square symmetry. When the attraction is increased, a transition to a rhombic Λ1-lattice is observed. We explain our findings by the change in contact area at faces and corners of the building blocks combined with the increase in attraction strength and range of the critical Casimir force. Our results show that the coupling between the rounded cubic shape and short-range attraction plays a crucial role for the superstructures that form and provide new insights for the active assembly control of micro and nanocubes.
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Affiliation(s)
- Chris L Kennedy
- Department of Applied Physics, Eindhoven University of Technology, Groene Loper 19, 5600 MB Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - Daphne Sayasilpi
- Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Peter Schall
- Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Janne-Mieke Meijer
- Department of Applied Physics, Eindhoven University of Technology, Groene Loper 19, 5600 MB Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
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4
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Mihali V, Honciuc A. Semiconductor-Insulator (Nano-)Couples with Tunable Properties Obtained from Asymmetric Modification of Janus Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49206-49214. [PMID: 34609834 DOI: 10.1021/acsami.1c14884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Coupling a semiconductor with an electrical insulator in a single amphiphilic nanoparticle could open new pathways for manufacturing and assembling organic electronic devices. Here, a poly(3,4-ethylenedioxythiophene)/polyaniline (PEDOT/PANI) bilayer is confined on the surface of one lobe of snowman-type Janus nanoparticles (JNPs), such that one lobe is semiconducting and the other is electrically insulating. The PEDOT/PANI bilayer is constructed in two synthesis steps, by asymmetric modification of the JNPs with PANI followed by PEDOT. The addition of the PEDOT layer onto the PANI-modified JNPs leads to an enhancement in the conductivity of up to 2 orders of magnitude. Further, we demonstrate that JNPs are very versatile supports for semiconducting polymers because by tuning their size and geometry the overall conductivity of the JNP powders can be modulated within several orders of magnitude.
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Affiliation(s)
- Voichita Mihali
- Institute of Chemistry and Biotechnology, Zurich University of Applied Sciences, Einsiedlerstrasse 31, 8820 Waedenswil, Switzerland
| | - Andrei Honciuc
- "Petru Poni" Institute of Macromolecular Chemistry, Electroactive Polymers and Plasmochemistry Laboratory, Aleea Gr. Ghica Voda 41A, Iasi 700487, Romania
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5
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Villanueva-Valencia JR, Guo H, Castañeda-Priego R, Liu Y. Concentration and size effects on the size-selective particle purification method using the critical Casimir force. Phys Chem Chem Phys 2021; 23:4404-4412. [PMID: 33594400 DOI: 10.1039/d0cp06136k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Critical Casimir force (CCF) is a solvent fluctuation introduced interaction between particles dispersed in a binary solvent. Recently, it has been demonstrated that the CCF induced attraction between particles can trigger particle size-sensitive aggregation, and has thus been used as an efficient way to purify nanoparticles by size. Here, combining small angle neutron scattering and dynamic light scattering, we investigate the effects of size and concentration on this particle size separation method. Increasing the particle concentration does not significantly affect the purification method, but the solvent composition needs to be adjusted for an optimized efficiency. This purification method is further demonstrated to work also very efficiently for systems with particle size ranging from 15 nm to about 50 nm with a very large size polydispersity. These results indicate that for both short-ranged and long-ranged attraction relative to the particle diameter, the CCF introduced particle aggregation is always size sensitive. This implies that particle aggregation is strongly affected by size polydispersity for many colloidal systems. We further propose a method to use light scattering to help identify the temperature range within which this particle purification method can work efficiently instead of using neutron scattering.
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Affiliation(s)
- José Ramón Villanueva-Valencia
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. and Sciences and Engineering Division, University of Guanajuato, Leon, Guanajuato 37150, Mexico
| | - Hongyu Guo
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. and Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA.
| | - Ramón Castañeda-Priego
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. and Sciences and Engineering Division, University of Guanajuato, Leon, Guanajuato 37150, Mexico
| | - Yun Liu
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. and Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA.
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6
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Li W, Palis H, Mérindol R, Majimel J, Ravaine S, Duguet E. Colloidal molecules and patchy particles: complementary concepts, synthesis and self-assembly. Chem Soc Rev 2020; 49:1955-1976. [DOI: 10.1039/c9cs00804g] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
About the latest developments regarding self-assembly of textured colloids and its prospects.
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Affiliation(s)
- Weiya Li
- Univ. Bordeaux
- CNRS
- ICMCB
- UMR 5026
- Pessac
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7
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Luo Z, Zhou J, Liu B. Engineering Surface Patterning of Colloidal Rings through Plateau-Rayleigh Instability. Angew Chem Int Ed Engl 2019; 58:16884-16888. [PMID: 31531921 DOI: 10.1002/anie.201910695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Indexed: 11/05/2022]
Abstract
Plateau-Rayleigh (P-R) instability occurring on Brownian colloidal particles is presented. This instability can be used for the surface patterning of Brownian colloidal rings. This idea was realized by employing polystyrene(PS)/SiO2 core/shell rings, for which PS layer was selectively grown onto the interior surface of SiO2 rings. The P-R instability was initiated in the ring's dispersion by adding a good solvent of PS. By using both experiments and theory, it is shown that the number of patches is tunable and that it is linearly related to a function of two variables, namely, solvent quantity and contact angle. In particular, one-patch Janus rings and patchy disks were also synthesized at high yields. The patch size of all particles is tunable by step-by-step polymerization and the patches can be functionalized, for example by ATRP grafting with pH-sensitive polymers. This approach can be adapted for the synthesis of other patchy colloids with designated complexity.
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Affiliation(s)
- Zhang Luo
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100149, China
| | - Jiajia Zhou
- Center of Soft Matter Physics and Its Application, Beihang University, Beijing, 100191, China
| | - Bing Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100149, China
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8
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Luo Z, Zhou J, Liu B. Engineering Surface Patterning of Colloidal Rings through Plateau–Rayleigh Instability. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhang Luo
- Beijing National Laboratory for Molecular SciencesState Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100149 China
| | - Jiajia Zhou
- Center of Soft Matter Physics and Its ApplicationBeihang University Beijing 100191 China
| | - Bing Liu
- Beijing National Laboratory for Molecular SciencesState Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100149 China
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9
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Baran Ł, Borówko M, Rżysko W, Patrykiejew A. Self-assembly of Janus disks confined in a slit. J Chem Phys 2019; 151:104703. [PMID: 31521087 DOI: 10.1063/1.5117887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using Monte Carlo simulations, we investigate the self-organization of Janus disks confined in two-dimensional slits. Janus particles are modeled as circles composed of attractive and repulsive parts. We consider the slits with identical walls and slits with competing walls (the so-called Janus-like pores). We investigate how the system morphology depends on the slit width, density, and temperature. Different unique orientationally ordered structures are found. The mechanism of formation of these structures is discussed in detail. We show that the anisotropic interactions between the confined molecules, the nature of the "walls," and the slit size strongly affect the self-organization.
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Affiliation(s)
- Ł Baran
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - M Borówko
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - W Rżysko
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - A Patrykiejew
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
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10
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Mérindol R, Duguet E, Ravaine S. Synthesis of Colloidal Molecules: Recent Advances and Perspectives. Chem Asian J 2019; 14:3232-3239. [DOI: 10.1002/asia.201900962] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Rémi Mérindol
- Centre de Recherche Paul Pascal (CRPP, UMR 5031)CNRS, Univ. Bordeaux 115 avenue du Dr Albert Schweitzer 33600 Pessac France
| | - Etienne Duguet
- Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB, UMR 5026)CNRS, Univ. Bordeaux, Bordeaux INP 87 avenue du Dr Albert Schweitzer 33600 Pessac France
| | - Serge Ravaine
- Centre de Recherche Paul Pascal (CRPP, UMR 5031)CNRS, Univ. Bordeaux 115 avenue du Dr Albert Schweitzer 33600 Pessac France
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11
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Marschelke C, Diring O, Synytska A. Reconfigurable assembly of charged polymer-modified Janus and non-Janus particles: from half-raspberries to colloidal clusters and chains. NANOSCALE ADVANCES 2019; 1:3715-3726. [PMID: 36133568 PMCID: PMC9418436 DOI: 10.1039/c9na00522f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 08/21/2019] [Indexed: 05/30/2023]
Abstract
Understanding the dynamic and reversible assembly of colloids and particles into complex constructs, inspired by natural phenomena, is of fundamental significance for the fabrication of multi-scale responsive and reconfigurable materials. In this work, we investigate the pH-triggered and reconfigurable assembly of structures composed of binary mixtures of oppositely charged polyacrylic acid (PAA)-modified non-Janus and poly(2-dimethylamino)ethyl methacrylate (PDMAEMA)/poly(N-isopropylacrylamide) (PNIPAM)-modified Janus particles driven by electrostatic interactions. Three different target structures are visible both in dispersions and in dry state: half-raspberry structures, colloidal clusters and colloidal chains depending on the mass, numerical and particle size ratio. All formed structures are well-defined and stable in a certain pH range. Half-raspberry-like structures are obtained at pH 6 and numerical ratios N JP/PAA-HP of 1 : 500 (for 200-PAA-HP), 1 : 44 (for 450-PAA-HP) and 1 : 15 (for 650-PAA-HP), respectively, due to electrostatic interactions between the central JP and the excessive PAA-HP. Colloidal chains and cluster-like structures are generated at numerical ratios N JP/PAA-HP of 4 : 5 (for 200-PAA-HP), 4 : 3 (for 450-PAA-HP), and 4 : 1 (for 650-PAA-HP). Moreover, the smaller the size of a "connecting" PAA colloid, the larger is the average length of a colloidal chain. Depending on the particle size ratio S JP/PAA-HP, some of the observed structures can be disassembled on demand by changing the pH value either close to the IEP of the PDMAEMA (for half-raspberries) or PAA (for colloidal clusters and chains) and then reassembled into new stable structures many times. The obtained results open a pathway to pH-controlled reconfigurable assembly of a binary mixture composed of polymeric-modified non-Janus and Janus particles, which allow the reuse of particle building blocks.
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Affiliation(s)
- Claudia Marschelke
- Leibniz Institute of Polymer Research Dresden e. V. Hohe Straße 6 01069 Dresden Germany
- Dresden University of Technology, Faculty of Mathematics and Science, Institute of Physical Chemistry and Polymer Physics 01062 Dresden Germany
| | - Olga Diring
- Leibniz Institute of Polymer Research Dresden e. V. Hohe Straße 6 01069 Dresden Germany
- Dresden University of Technology, Faculty of Mathematics and Science, Institute of Physical Chemistry and Polymer Physics 01062 Dresden Germany
| | - Alla Synytska
- Leibniz Institute of Polymer Research Dresden e. V. Hohe Straße 6 01069 Dresden Germany
- Dresden University of Technology, Faculty of Mathematics and Science, Institute of Physical Chemistry and Polymer Physics 01062 Dresden Germany
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12
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Zheng X, Pan D, Chen M, Dai X, Cai H, Zhang H, Gong Q, Gu Z, Luo K. Tunable Hydrophile-Lipophile Balance for Manipulating Structural Stability and Tumor Retention of Amphiphilic Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901586. [PMID: 31259438 DOI: 10.1002/adma.201901586] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/30/2019] [Indexed: 06/09/2023]
Abstract
Hydrophile-lipophile balance (HLB) has a great influence on the self-assembly and physicochemical properties of amphiphiles, thus affecting their biological effects. It is shown that amphiphilic nanoparticles (NPs) with a moderate HLB value display enhanced stability and highly efficient tumor retention. 2,2-Bis(hydroxymethyl)propionic acid hyperbranched poly(ethylene glycol) (PEG)-pyropheophorbide-a (Ppa) amphiphiles (G320P, G310P, G220P, and G210P) are synthesized with a tunable HLB value from 6.1 to 9.9 by manipulating the number of generation of dendrons (G2 or G3) and the molecular weight of PEG chains (10 or 20 kDa). Molecular dynamics simulations reveal that G320P and G210P with a moderate HLB value (8.0 and 7.8) self-assemble into very stable NPs with a small solvent accessible surface area and high nonbonding interactions. G320P with a moderate HLB value (8.0) and a long PEG chain excels against other NPs in prolonging the blood circulation time of Ppa (up to 13-fold), penetrating deeply into multicellular tumor spheroids and accumulating in tumors, and enhancing the PDT efficacy with a tumor growth inhibition of 96.0%. Rational design of NPs with a moderate HLB value may be implemented in these NP-derived nanomedicines to achieve high levels of retention in tumors.
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Affiliation(s)
- Xiuli Zheng
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Dayi Pan
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Miao Chen
- West China School of Medicine, and West China College of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xinghang Dai
- West China School of Medicine, and West China College of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Hao Cai
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, CA, 91711, USA
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, Department of Radiology, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China Hospital, and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610041, China
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13
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Borówko M, Rżysko W, Słyk E. Self-assembly in two-dimensional mixtures of Janus disks and isotropic particles. J Chem Phys 2019; 150:044705. [DOI: 10.1063/1.5063292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- M. Borówko
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - W. Rżysko
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - E. Słyk
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
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14
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Solomon MJ. Tools and Functions of Reconfigurable Colloidal Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11205-11219. [PMID: 29397742 DOI: 10.1021/acs.langmuir.7b03748] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We review work in reconfigurable colloidal assembly, a field in which rapid, back-and-forth transitions between the equilibrium states of colloidal self-assembly are accomplished by dynamic manipulation of the size, shape, and interaction potential of colloids, as well as the magnitude and direction of the fields applied to them. It is distinguished from the study of colloidal phase transitions by the centrality of thermodynamic variables and colloidal properties that are time switchable; by the applicability of these changes to generate transitions in assembled colloids that may be spatially localized; and by its incorporation of the effects of generalized potentials due to, for example, applied electric and magnetic fields. By drawing upon current progress in the field, we propose a matrix classification of reconfigurable colloidal systems based on the tool used and function performed by reconfiguration. The classification distinguishes between the multiple means by which reconfigurable assembly can be accomplished (i.e., the tools of reconfiguration) and the different kinds of structural transitions that can be achieved by it (i.e., the functions of reconfiguration). In the first case, the tools of reconfiguration can be broadly classed as (i) those that control the colloidal contribution to the system entropy-as through volumetric and/or shape changes of the particles; (ii) those that control the internal energy of the colloids-as through manipulation of colloidal interaction potentials; and (iii) those that control the spatially resolved potential energy that is imposed on the colloids-as through the introduction of field-induced phoretic mechanisms that yield colloidal displacement and accumulation. In the second case, the functions of reconfiguration include reversible: (i) transformation between different phases-including fluid, cluster, gel, and crystal structures; (ii) manipulation of the spacing between colloids in crystals and clusters; and (iii) translation, rotation, or shape-change of finite-size objects self-assembled from colloids. With this classification in hand, we correlate the current limits on the spatiotemporal scales for reconfigurable colloidal assembly and identify a set of future research challenges.
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15
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Mani KA, Yaakov N, Itzhaik Alkotzer Y, Zelikman E, Mechrez G. A Robust Fabrication Method for Amphiphilic Janus Particles via Immobilization on Polycarbonate Microspheres. Polymers (Basel) 2018; 10:E900. [PMID: 30960825 PMCID: PMC6403569 DOI: 10.3390/polym10080900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 07/29/2018] [Accepted: 08/08/2018] [Indexed: 11/16/2022] Open
Abstract
Immobilizing particles on beads, fibers, or filaments, when only one side is exposed to the reaction medium and therefore can be selectively functionalized, is a scalable and easy to control strategy for the fabrication of amphiphilic Janus particles. Here we describe a new, robust method for the fabrication of amphiphilic Janus particles based on immobilization of polymethylsilsesquioxane (PMSQ) particles on polycarbonate (PC), a high impact-resistance polymer with superior mechanical properties. The immobilization of the particles on the PC microspores is performed via inverse solvent displacement method. PMSQ particles are added to a PC solution in tetrahydrofuran (THF), a good solvent for PC. The solution is then precipitated by the introduction of aqueous surfactant solution (antisolvent for PC) under an ultrasonic field. It is important to note that THF and water are miscible and do not form emulsion. During precipitation, PMSQ particles are assembled onto the surface of the PC spherical precipitates/microspheres. The exposed hemispheres of the PMSQ particles are then selectively silanized by (3-Aminopropyl)triethoxysilane (APTES) to introduce amine groups on their surface. To increase the polarity of the functionalized hemispheres, the amine groups are further modified to introduce carboxyl groups. SEM characterization confirms the fine embedment of PMSQ particles onto the PC microspheres. Covalent attachment of silica nanoparticles (NPs) to the functionalized hemispheres of the resulting particles along with fluorescent confocal microscopy conclusively prove the successful fabrication of amphiphilic Janus particles. The immobilization of particles onto highly rigid polymeric microspheres such as PC may pave the way for the development of a robust fabrication procedure with high resistance to temperature fluctuations and harsh mixing conditions that can arise during preparation. This method can be implemented toward a large variety of other synthetic commercial polymers such as polyamide, polyether sulfones, Polyether, ether ketone, or similar.
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Affiliation(s)
- Karthik Ananth Mani
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
| | - Noga Yaakov
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
| | - Yafit Itzhaik Alkotzer
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
| | - Evgeni Zelikman
- Additives and Compounds Division, Tosaf Group, Alon Tavor Industrial Zone, 1812601 Afula, Israel.
| | - Guy Mechrez
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
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16
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Zhao W, Sun H, Wang Y, Eastoe J, Dong S, Hao J. Self-Assembled Magnetic Viruslike Particles for Encapsulation and Delivery of Deoxyribonucleic Acid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7171-7179. [PMID: 29809016 DOI: 10.1021/acs.langmuir.8b01445] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Developing nontoxic artificial carriers for stimuli-responsive capture, transport, and delivery of biomolecules is of immense scientific interest. Herein, for the first time, we synthesize a double-tailed cationic surfactant, (C16H33)2(CH3)2N+[FeCl3Br]-, which possesses magnetic properties [magnetic surfactants (Mag-Surfs)]. The time-dependent formation of virus-shaped hybrid mixed assemblies of polyoxometalates (POMs) {Mo72Fe30}/Mag-Surf with hollow-shell structures is followed. These structures serve well as robust high-surface-area shuttles, which can be manipulated with applied magnetic fields. By using cationic Mag-Surfs, the anionic POMs and DNA can be complexed in these ternary mixtures. These virus-shaped complexes act as nanoanchors and nanomotors, which can be utilized for binding, anchoring, and delivery of biomolecules, such as DNA. It is found that they have a good absorption capacity for DNA and myoglobin over 24 h, after application of a magnetic field. The realization of magnetic virus-shaped {Mo72Fe30}/Mag-Surf spheres may open possibilities for designing other functional nanoparticles, allowing effective control over the delivery/separation of biomolecules.
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Affiliation(s)
- Wenrong Zhao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Hong Sun
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Yitong Wang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Julian Eastoe
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
| | - Shuli Dong
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials , Shandong University, Ministry of Education , Jinan 250100 , P. R. China
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17
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Wang L, Kang F, Shi G, Jin C, Li H, Liu H, Yao B. Synthesis of Janus Particle Arrays and Janus Films through an Interfacial Polymerization Method. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418040167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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DeLaCruz-Araujo RA, Beltran-Villegas DJ, Larson RG, Córdova-Figueroa UM. Shear-Induced Alignment of Janus Particle Lamellar Structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:1051-1060. [PMID: 29077413 DOI: 10.1021/acs.langmuir.7b02921] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Control over the alignment of colloidal structures plays a crucial role in advanced reconfigurable materials. In this work, we study the alignment of Janus particle lamellar structures under shear flow via Brownian dynamics simulations. Lamellar alignment (orientation relative to flow direction) is measured as a function of the Péclet number (Pe)-the ratio of the viscous shear to the Brownian forces-the particle volume fraction, and the strength of the anisotropic interaction potential made dimensionless with thermal energy. Under conditions where lamellar structures are formed, three orientation regimes are observed: (1) random orientation for very small Pe, (2) parallel orientation-lamellae with their normals parallel to the direction of the velocity gradient-for intermediate values of Pe, and (3) perpendicular orientation-lamellae with their normals parallel to the vorticity direction-for large Pe. To understand the alignment mechanism, we carry out a scaling analysis of competing torques between a pair of particles in the lamellar structure. Our results suggest that the change of parallel to perpendicular orientation is independent of the particle volume fraction and is caused by the hydrodynamic and Brownian torques on the particles overcoming the torques resulting from the interparticle interactions. This initial study of shear-induced alignment on lamellar structures formed by Janus colloidal particles also opens the door for future applications where a reversible actuator for structure orientation is required.
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Affiliation(s)
- Ronal A DeLaCruz-Araujo
- Department of Chemical Engineering, University of Puerto Rico-Mayagüez , Mayagüez, Puerto Rico 00681, United States
| | - Daniel J Beltran-Villegas
- Department of Chemical Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Ronald G Larson
- Department of Chemical Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Ubaldo M Córdova-Figueroa
- Department of Chemical Engineering, University of Puerto Rico-Mayagüez , Mayagüez, Puerto Rico 00681, United States
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Sun Y, Ren T, Deng Z, Yang Y, Zhong S. Molecularly imprinted polymers fabricated using Janus particle-stabilized Pickering emulsions and charged monomer polymerization. NEW J CHEM 2018. [DOI: 10.1039/c8nj00282g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Janus particle-stabilized Pickering emulsions and their applications in protein interfacial imprinting.
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Affiliation(s)
- Yanhua Sun
- School of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Tao Ren
- School of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Zhiwei Deng
- School of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Yanjing Yang
- School of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
| | - Shian Zhong
- School of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- China
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20
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The Evolution of Active Particles: Toward Externally Powered Self-Propelling and Self-Reconfiguring Particle Systems. Chem 2017. [DOI: 10.1016/j.chempr.2017.09.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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21
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Nguyen TA, Newton A, Veen SJ, Kraft DJ, Bolhuis PG, Schall P. Switching Colloidal Superstructures by Critical Casimir Forces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 28692773 DOI: 10.1002/adma.201700819] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 06/09/2017] [Indexed: 06/07/2023]
Abstract
Recent breakthroughs in colloidal synthesis promise the bottom-up assembly of superstructures on nano- and micrometer length scales, offering molecular analogues on the colloidal scale. However, a structural control similar to that in supramolecular chemistry remains very challenging. Here, colloidal superstructures are built and controlled using critical Casimir forces on patchy colloidal particles. These solvent-mediated forces offer direct analogues of molecular bonds, allowing patch-to-patch binding with exquisite temperature control of bond strength and stiffness. Particles with two patches are shown to form linear chains undergoing morphological changes with temperature, resembling a polymer collapse under poor-solvent conditions. This reversible temperature switching carries over to particles with higher valency, exhibiting a variety of patch-to-patch bonded structures. Using Monte Carlo simulations, it is shown that the collapse results from the growing interaction range favoring close-packed configurations. These results offer new opportunities for the active control of complex structures at the nano and micrometer scale, paving the way to novel temperature-switchable materials.
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Affiliation(s)
- Truc A Nguyen
- Institute of Physics, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Arthur Newton
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Sandra J Veen
- Institute of Physics, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Daniela J Kraft
- Huygens-Kamerlingh Onnes Laboratory, Leiden University, Leiden, 2333 CA, The Netherlands
| | - Peter G Bolhuis
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Peter Schall
- Institute of Physics, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
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22
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Zhang J, Grzybowski BA, Granick S. Janus Particle Synthesis, Assembly, and Application. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6964-6977. [PMID: 28678499 DOI: 10.1021/acs.langmuir.7b01123] [Citation(s) in RCA: 188] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Janus particles are colloidal particles with more than a single type of surface chemistry or composition, ranging in size from hundreds of nanometers to a few micrometers. Like traditional colloids, they are large enough to be observed under optical microscopy in real time and small enough to diffuse by Brownian motion, but their interesting and useful new properties of directional interaction bring new research opportunities to the fields of soft matter and fundamental materials research as well as to applications in other disciplines and in technologies such as electronic paper and other multiphase engineering. In this review, a variety of methods that have been used to synthesize Janus particles are introduced. Following this, we summarize the use of Janus particles as basic units that assemble into novel structures and tune important material properties. The concluding sections highlight some of the technological applications, including recent progress in using Janus particles as microprobes, micromotors, electronic paper, and solid surfactants.
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Affiliation(s)
- Jie Zhang
- Department of Materials Science and Engineering, University of Illinois , Urbana, Illinois 61801, United States
| | | | - Steve Granick
- IBS Center for Soft and Living Matter, UNIST , Ulsan 689-798, South Korea
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23
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Borówko M, Rżysko W, Sokołowski S, Staszewski T. Self-assembly of Janus disks induced by small molecules in two-dimensional systems. J Chem Phys 2017; 147:014904. [PMID: 28688378 DOI: 10.1063/1.4990415] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- M. Borówko
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - W. Rżysko
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - S. Sokołowski
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - T. Staszewski
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
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24
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Ravaine S, Duguet E. Synthesis and assembly of patchy particles: Recent progress and future prospects. Curr Opin Colloid Interface Sci 2017. [DOI: 10.1016/j.cocis.2017.05.002] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Zhang Z, Li H, Huang X, Chen D. Solution-Based Thermodynamically Controlled Conversion from Diblock Copolymers to Janus Nanoparticles. ACS Macro Lett 2017; 6:580-585. [PMID: 35650841 DOI: 10.1021/acsmacrolett.7b00296] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nanosized polymeric Janus particles (NPJPs) have important applications in a variety of theoretical and practical research fields. However, the methods that are versatile and can prepare NPJPs highly efficiently are very limited. Herein, we reported a two-step thermodynamically controlled preparation of NPJPs with a high yield using a diblock copolymer as the precursor. At the first step, A-b-B coassembled in the solution with a partner diblock copolymer C-b-B to form the mixed shell micelles (MSMs) with B core and A/C mixed shell. Then, intramicellarly covalently cross-linking the A block chains resulted in the complete phase separation of A and C chains in the mixed shell, leading to the direct conversion of the MSMs into NPJPs. The first step, diblock copolymer micellization, is known as a thermodynamically controlled process, and we also made the second step, conversion from MSMs to NPJPs, be thermodynamically controlled due to the application of covalent cross-linking. As the result, the conversion efficiency is close to 100%. Besides, it was further confirmed that the method can be applied to different systems and used to tune the Janus balance. Therefore, this conversion should be very significant for the fabrication and application of the NPJPs.
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Affiliation(s)
- Zhen Zhang
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Fudan University, 200433, Shanghai, China
| | - Haodong Li
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Fudan University, 200433, Shanghai, China
| | - Xiayun Huang
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Fudan University, 200433, Shanghai, China
| | - Daoyong Chen
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Fudan University, 200433, Shanghai, China
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26
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Bharti B, Rutkowski D, Han K, Kumar AU, Hall CK, Velev OD. Capillary Bridging as a Tool for Assembling Discrete Clusters of Patchy Particles. J Am Chem Soc 2016; 138:14948-14953. [DOI: 10.1021/jacs.6b08017] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bhuvnesh Bharti
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
- Cain
Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - David Rutkowski
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Koohee Han
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Aakash Umesh Kumar
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Carol K. Hall
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Orlin D. Velev
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
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27
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Labbé-Laurent M, Dietrich S. Critical Casimir interactions between Janus particles. SOFT MATTER 2016; 12:6621-6648. [PMID: 27444691 DOI: 10.1039/c6sm00990e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Recently there has been strong experimental and theoretical interest in studying the self-assembly and the phase behavior of patchy and Janus particles, which form colloidal suspensions. Although in this quest a variety of effective interactions have been proposed and used in order to achieve a directed assembly, the critical Casimir effect stands out as being particularly suitable in this respect because it provides both attractive and repulsive interactions as well as the potential of a sensitive temperature control of their strength. Specifically, we have calculated the critical Casimir force between a single Janus particle and a laterally homogeneous substrate as well as a substrate with a chemical step. We have used the Derjaguin approximation and compared it with results from full mean field theory. A modification of the Derjaguin approximation turns out to be generally reliable. Based on this approach we have derived the effective force and the effective potential between two Janus cylinders as well as between two Janus spheres.
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Affiliation(s)
- M Labbé-Laurent
- Max-Planck-Institut für Intelligente Systeme, Heisenbergstr. 3, D-70569 Stuttgart, Germany.
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28
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Wang H, Li B, Yodh AG, Zhang Z. Stimuli‐Responsive Shape Switching of Polymer Colloids by Temperature‐Sensitive Absorption of Solvent. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Huaguang Wang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research Soochow University Suzhou 215006 China
| | - Binghui Li
- Center for Soft Condensed Matter Physics and Interdisciplinary Research Soochow University Suzhou 215006 China
| | - Arjun G. Yodh
- Department of Physics and Astronomy University of Pennsylvania Philadelphia PA 19104 USA
| | - Zexin Zhang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research Soochow University Suzhou 215006 China
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29
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Wang H, Li B, Yodh AG, Zhang Z. Stimuli‐Responsive Shape Switching of Polymer Colloids by Temperature‐Sensitive Absorption of Solvent. Angew Chem Int Ed Engl 2016; 55:9952-5. [DOI: 10.1002/anie.201604294] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/09/2016] [Indexed: 01/06/2023]
Affiliation(s)
- Huaguang Wang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research Soochow University Suzhou 215006 China
| | - Binghui Li
- Center for Soft Condensed Matter Physics and Interdisciplinary Research Soochow University Suzhou 215006 China
| | - Arjun G. Yodh
- Department of Physics and Astronomy University of Pennsylvania Philadelphia PA 19104 USA
| | - Zexin Zhang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research Soochow University Suzhou 215006 China
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30
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Fernandez-Rodriguez MA, Rodriguez-Valverde MA, Cabrerizo-Vilchez MA, Hidalgo-Alvarez R. Surface activity of Janus particles adsorbed at fluid-fluid interfaces: Theoretical and experimental aspects. Adv Colloid Interface Sci 2016; 233:240-254. [PMID: 26094083 DOI: 10.1016/j.cis.2015.06.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/04/2015] [Accepted: 06/04/2015] [Indexed: 10/23/2022]
Abstract
Since de Gennes coined in 1992 the term Janus particle (JP), there has been a continued effort to develop this field. The purpose of this review is to present the most relevant theoretical and experimental results obtained so far on the surface activity of amphiphilic JPs at fluid interfaces. The surface activity of JPs at fluid-fluid interfaces can be experimentally determined using two different methods: the classical Langmuir balance or the pendant drop tensiometry. The second method requires much less amount of sample than the first one, but it has also some experimental limitations. In all cases collected here the JPs exhibited a higher surface or interfacial activity than the corresponding homogeneous particles. This reveals the significant advantage of JPs for the stabilization of emulsions and foams.
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31
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Wang X, Feng X, Ma G, Yao L, Ge M. Amphiphilic Janus Particles Generated via a Combination of Diffusion-Induced Phase Separation and Magnetically Driven Dewetting and Their Synergistic Self-Assembly. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3131-3137. [PMID: 26923562 DOI: 10.1002/adma.201506358] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/12/2016] [Indexed: 06/05/2023]
Abstract
Amphiphilic Janus particles are successfully obtained via a powerful strategy combining diffusion-induced phase separation and magnetically driven dewetting. A large-area, amphiphilic monolayer is been formed via a self-assembly paradigm based on a synergy between the amphiphilicity, shape anisotropy, and external magnetic field. This functionality holds great promise for practical applications in intelligent coatings, anti-bioadhesion, and antifouling surfaces.
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Affiliation(s)
- Xiuyu Wang
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, North First Street 2, ZhongguancunBeijing, 100190, China
| | - Xueyan Feng
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Guiping Ma
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Li Yao
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, North First Street 2, ZhongguancunBeijing, 100190, China
| | - Maofa Ge
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, North First Street 2, ZhongguancunBeijing, 100190, China
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32
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Nguyen VD, Dang MT, Nguyen TA, Schall P. Critical Casimir forces for colloidal assembly. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:043001. [PMID: 26750980 DOI: 10.1088/0953-8984/28/4/043001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Critical Casimir forces attract increasing interest due to their opportunities for reversible particle assembly in soft matter and nano science. These forces provide a thermodynamic analogue of the celebrated quantum mechanical Casimir force that arises from the confinement of vacuum fluctuations of the electromagnetic field. In its thermodynamic analogue, solvent fluctuations, confined between suspended particles, give rise to an attractive or repulsive force between the particles. Due to its unique temperature dependence, this effect allows in situ control of reversible assembly. Both the force magnitude and range vary with the solvent correlation length in a universal manner, adjusting with temperature from fractions of the thermal energy, k B T, and nanometre range to several ten kT and micrometer length scale. Combined with recent breakthroughs in the synthesis of complex particles, critical Casimir forces promise the design and assembly of complex colloidal structures, for fundamental studies of equilibrium and out-of-equilibrium phase behaviour. This review highlights recent developments in this evolving field, with special emphasis on the dynamic interaction control to assemble colloidal structures, in and out of equilibrium.
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Affiliation(s)
- V D Nguyen
- Van der Waals-Zeeman Institute, University of Amsterdam, The Netherlands. Physical Chemistry and Soft Matter, Wageningen University, Wageningen, The Netherlands
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33
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Bourone SDM, Kaulen C, Homberger M, Simon U. Directed Self-Assembly and Infrared Reflection Absorption Spectroscopy Analysis of Amphiphilic and Zwitterionic Janus Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:954-962. [PMID: 26726770 DOI: 10.1021/acs.langmuir.5b03897] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Here, we report an approach to use infrared reflection absorption spectroscopy (IRRAS) for the unambiguous proof of the presence as well as the spatial distribution of organic ligands on the Janus gold nanoparticle (AuNP) surface. For this purpose we synthesized amphiphilic and zwitterionic Janus AuNPs and immobilized these on pretreated gold surfaces by directed self-assembly, exploiting hydrophilic/hydrophobic or electrostatic interactions, respectively. Thus, we obtained macroscopic two-dimensional arrays of Janus AuNPs exhibiting a specific orientation. These arrays were investigated by IRRAS, and the obtained spectra revealed only peaks of the ligands facing the IR beam, while the ligands facing the gold substrate were not detected due to reflection of the IR beam on the AuNP cores. Thus, we describe a straightforward spectroscopic procedure to prove the Janus character of zwitterionic and amphiphilic AuNPs in the size range of 10-15 nm.
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Affiliation(s)
- Svenja D M Bourone
- Institute of Inorganic Chemistry and JARA - Fundamentals of Future Information Technologies, RWTH Aachen University , 52074 Aachen, Germany
| | - Corinna Kaulen
- Institute of Inorganic Chemistry and JARA - Fundamentals of Future Information Technologies, RWTH Aachen University , 52074 Aachen, Germany
| | - Melanie Homberger
- Institute of Inorganic Chemistry and JARA - Fundamentals of Future Information Technologies, RWTH Aachen University , 52074 Aachen, Germany
| | - Ulrich Simon
- Institute of Inorganic Chemistry and JARA - Fundamentals of Future Information Technologies, RWTH Aachen University , 52074 Aachen, Germany
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Zhang J, Granick S. Natural selection in the colloid world: active chiral spirals. Faraday Discuss 2016; 191:35-46. [DOI: 10.1039/c6fd00077k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We present a model system in which to study natural selection in the colloid world. In the assembly of active Janus particles into rotating pinwheels when mixed with trace amounts of homogeneous colloids in the presence of an AC electric field, broken symmetry in the rotation direction produces spiral, chiral shapes. Locked into a central rotation point by the centre particle, the spiral arms are found to trail rotation of the overall cluster. To achieve a steady state, the spiral arms undergo an evolutionary process to coordinate their motion. Because all the particles as segments of the pinwheel arms are self-propelled, asymmetric arm lengths are tolerated. Reconfiguration of these structures can happen in various ways and various mechanisms of this directed structural change are analyzed in detail. We introduce the concept of VIP (very important particles) to express that sustainability of active structures is most sensitive to only a few particles at strategic locations in the moving self-assembled structures.
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Affiliation(s)
- Jie Zhang
- Department of Materials Science and Engineering
- University of Illinois
- Urbana
- USA
| | - Steve Granick
- IBS Centre for Soft and Living Matter
- Department of Chemistry
- UNIST (Ulsan National Institute of Science and Technology)
- Ulsan 689-798
- South Korea
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Würger A. Self-Diffusiophoresis of Janus Particles in Near-Critical Mixtures. PHYSICAL REVIEW LETTERS 2015; 115:188304. [PMID: 26565507 DOI: 10.1103/physrevlett.115.188304] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Indexed: 06/05/2023]
Abstract
We theoretically study the self-propulsion of a laser-heated Janus particle in a near-critical water-lutidine mixture, and we relate its velocity v_{p} and squirmer parameter β to the wetting properties of its two hemispheres. For nonionic surface forces, the particle moves the active cap at the front, whereas a charged hydrophilic cap leads to backward motion, in agreement with the experiment. Both v_{p} and β show nonmonotonic dependencies on the heating power, and they may even change sign. The variation of β is expected to strongly affect the collective behavior of dense squirmer systems.
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Affiliation(s)
- Alois Würger
- Laboratoire Ondes et Matière d'Aquitaine, Université de Bordeaux and CNRS, 351 cours de la Libération, 33405 Talence, France
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Lee J, Park TH, Lee KJ, Lahann J. Snail-like Particles from Compartmentalized Microfibers. Macromol Rapid Commun 2015; 37:73-78. [PMID: 26488433 DOI: 10.1002/marc.201500431] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/12/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Jaemin Lee
- Department of Fine Chemical Engineering and Applied Chemistry; College of Engineering; Chungnam National University; Daejeon 305-764 Korea
| | - Tae-Hong Park
- Department of Chemical Engineering; Macromolecular Science and Engineering and Department of Materials Science and Engineering; University of Michigan; Ann Arbor MI 48109 USA
- Nuclear Chemistry Research Division; Korea Atomic Energy Research Institute; Daejeon 305-353 Korea
| | - Kyung Jin Lee
- Department of Fine Chemical Engineering and Applied Chemistry; College of Engineering; Chungnam National University; Daejeon 305-764 Korea
- Department of Chemical Engineering; Macromolecular Science and Engineering and Department of Materials Science and Engineering; University of Michigan; Ann Arbor MI 48109 USA
| | - Joerg Lahann
- Department of Chemical Engineering; Macromolecular Science and Engineering and Department of Materials Science and Engineering; University of Michigan; Ann Arbor MI 48109 USA
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37
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Bharti B, Velev OD. Assembly of Reconfigurable Colloidal Structures by Multidirectional Field-Induced Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7897-908. [PMID: 25683680 DOI: 10.1021/la504793y] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Field-directed colloidal assembly has shown remarkable recent progress in increasing the complexity, degree of control, and multiscale organization of the structures. This has largely been achieved by using particles of complex shapes and polarizabilites (Janus, patchy, shaped, and faceted). We review the fundamentals of the interactions leading to the directed assembly of such structures, the ways to simulate the dynamics of the process, and the effect of particle size, shape, and properties on the type of structure obtained. We discuss how directional polarization interactions induced by external electric and magnetic fields can be used to assemble complex particles or particle mixtures into lattices of tailored structure. Examples of such systems include isotropic and anisotropic shaped particles with surface patches, which form networks and crystals of unusual symmetry by dipolar, quadrupolar, and multipolar interactions in external fields. The emerging trends in making reconfigurable and dynamic structures are discussed.
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Affiliation(s)
- Bhuvnesh Bharti
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Orlin D Velev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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38
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Neue Mitglieder der National Academy of Sciences Neue Fellows der Royal Society. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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39
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New Members of the National Academy of Sciences New Fellows of the Royal Society. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201504361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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40
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Zhang J, Luijten E, Granick S. Toward Design Rules of Directional Janus Colloidal Assembly. Annu Rev Phys Chem 2015; 66:581-600. [DOI: 10.1146/annurev-physchem-040214-121241] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jie Zhang
- Departments of 1Materials Science and Engineering,
| | - Erik Luijten
- Departments of Materials Science and Engineering, Engineering Sciences and Applied Mathematics, and Physics and Astronomy, Northwestern University, Evanston, Illinois 60208
| | - Steve Granick
- Departments of 1Materials Science and Engineering,
- Physics, and
- Chemistry, University of Illinois, Urbana, Illinois 61801;
- Center for Soft and Living Matter and UNIST, Ulsan 689-798, South Korea
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41
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Zhou Y, Wang D, Huang S, Auernhammer G, He Y, Butt HJ, Wu S. Reversible Janus particle assembly via responsive host–guest interactions. Chem Commun (Camb) 2015; 51:2725-7. [DOI: 10.1039/c4cc09672j] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Self-assembly of Janus particles is reversibly controlled by responsive host–guest interactions of cyclodextrin and azobenzene.
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Affiliation(s)
- Ying Zhou
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
- College of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
| | - Dongsheng Wang
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | - Shilin Huang
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | | | - Yujian He
- College of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
- Beijing 100049
- China
| | | | - Si Wu
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
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