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Walsh MR. Comparing brute force to transition path sampling for gas hydrate nucleation with a flat interface: comments on time reversal symmetry. Phys Chem Chem Phys 2024; 26:5762-5772. [PMID: 38214888 DOI: 10.1039/d3cp05059a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Fluid to solid nucleation is often investigated with the rare event method transition path sampling (TPS). I claim that the inherent irreversibility of solid nucleation, even at stationary conditions, calls into question TPS's applicability for determining solid nucleation mechanisms, especially for pre-critical behavior. Even when applied to a phenomenon which displays time reversal asymmetry like solid nucleation, TPS is a good means of exploring phase space and giving trends in post-critical structure, and its ability to facilitate nucleation rate and free energy calculations remains outstanding. Forward-only splitting and ratcheting methods such as forward flux sampling are more attractive for understanding nucleation mechanisms as they do not require time reversal symmetry, but at low driving forces may suffer from the same limitations as brute force: they may never make it to the first ratchet. Here I briefly summarize the TPS method and gas hydrate nucleation simulation literature, focusing on topics within both to facilitate a comparison of brute force hydrate nucleation to transition path sampling of hydrate nucleation. Perhaps anecdotally, the brute force technique results in more crystalline trajectories despite having higher driving forces than TPS. I maintain this difference is because of the inherent irreversibility of hydrate nucleation, meaning its pre-critical behavior cannot accurately be determined by the melting trajectories that comprise approximately half of the configurations in TPS's path ensemble.
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2
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Aizawa M, Iwase H, Kamijo T, Yamaguchi A. Protein Condensation at Nanopore Entrances as Studied by Differential Scanning Calorimetry and Small-Angle Neutron Scattering. J Phys Chem Lett 2022; 13:8684-8691. [PMID: 36094403 DOI: 10.1021/acs.jpclett.2c01708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The condensation of globular myoglobin (Mb) at the pore entrances of mesoporous silica (MPS) with a series of pore diameters (4.2, 6.4, 7.7, and 9.0 nm) was examined by differential scanning calorimetry (DSC) and contrast-matching small-angle neutron scattering (CM-SANS) experiments. The DSC measurements were performed to estimate the amount of Mb adsorbed at two different adsorption sites, namely, the pore interior and the pore entrance regions. The CM-SANS measurements were conducted to observe condensation of Mb molecules at the pore entrance regions. Notably, the nanopore entrance with a diameter close to twice that of the Mb diameter was found to be the specific cavity to facilitate the condensation of globular Mb. The Mb condensation occurred at the entrances of the 6.4 nm pore during the adsorption uptake from concentrated Mb solutions, whereas the adsorption uptake from diluted Mb solutions induced the condensation of Mb at the entrances of the 7.7 nm pore.
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Affiliation(s)
- Mami Aizawa
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Hiroki Iwase
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - Toshio Kamijo
- Department of Creative Engineering, National Institute of Technology, Tsuruoka College, 104 Sawada, Inooka, Tsuruoka, Yamagata 997-8511, Japan
| | - Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
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Winkens M, Korevaar PA. Self-Organization Emerging from Marangoni and Elastocapillary Effects Directed by Amphiphile Filament Connections. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10799-10809. [PMID: 36005886 PMCID: PMC9454263 DOI: 10.1021/acs.langmuir.2c01241] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 08/06/2022] [Indexed: 05/29/2023]
Abstract
Self-organization of meso- and macroscale structures is a highly active research field that exploits a wide variety of physicochemical phenomena, including surface tension, Marangoni flow, and (elasto)capillary effects. The release of surface-active compounds generates Marangoni flows that cause repulsion, whereas capillary forces attract floating particles via the Cheerios effect. Typically, the interactions resulting from these effects are nonselective because the gradients involved are uniform. In this work, we unravel the mechanisms involved in the self-organization of amphiphile filaments that connect and attract droplets floating at the air-water interface, and we demonstrate their potential for directional gradient formation and thereby selective interaction. We simulate Marangoni flow patterns resulting from the release and depletion of amphiphile molecules by source and drain droplets, respectively, and we predict that these flow patterns direct the growth of filaments from the source droplets toward specific drain droplets, based on their amphiphile depletion rate. The interaction between such droplets is then investigated experimentally by charting the flow patterns in their surroundings, while the role of filaments in source-drain attraction is studied using microscopy. Based on these observations, we attribute attraction of drain droplets and even solid objects toward the source to elastocapillary effects. Finally, the insights from our simulations and experiments are combined to construct a droplet-based system in which the composition of drain droplets regulates their ability to attract filaments and as a consequence be attracted toward the source. Thereby, we provide a novel method through which directional attraction can be established in synthetic self-organizing systems and advance our understanding of how complexity arises from simple building blocks.
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Mino Y, Tanaka H, Nakaso K, Gotoh K, Shinto H. Lattice Boltzmann model for capillary interactions between particles at a liquid-vapor interface under gravity. Phys Rev E 2022; 105:045316. [PMID: 35590684 DOI: 10.1103/physreve.105.045316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/25/2022] [Indexed: 06/15/2023]
Abstract
A computational technique based on the lattice Boltzmann method (LBM) is developed to simulate the wettable particles adsorbed to a liquid-vapor interface under gravity. The proposed technique combines the improved smoothed-profile LBM for the treatment of moving solid particles in a fluid and the free-energy LBM for the description of a liquid-vapor system. Five benchmark two-dimensional problems are examined: (A) a stationary liquid drop in the vapor phase; a wettable particle adsorbed to a liquid-vapor interface in (B) the absence and (C) the presence of gravity; (D) two freely moving particles at a liquid-vapor interface in the presence of gravity (i.e., capillary flotation forces); and (E) two vertically constrained particles at a liquid-vapor interface (i.e., capillary immersion forces). The simulation results are in good quantitative agreement with theoretical estimations, demonstrating that the proposed technique can reproduce the capillary interactions between wettable particles at a liquid-vapor interface under gravity.
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Affiliation(s)
- Yasushi Mino
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Hazuki Tanaka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Koichi Nakaso
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Kuniaki Gotoh
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Hiroyuki Shinto
- Department of Chemical Engineering, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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5
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Han ST, Duan HY, Chen LY, Zhan TG, Liu LJ, Kong LC, Zhang KD. Photo-Controlled Macroscopic Self-Assembly Based on Photo-Switchable Hetero-Complementary Quadruple Hydrogen Bonds. Chem Asian J 2021; 16:3886-3889. [PMID: 34591366 DOI: 10.1002/asia.202101076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 09/29/2021] [Indexed: 01/19/2023]
Abstract
A photo-switchable hetero-complementary quadruple H-bonding array, which consists of an azobenzene-derived ureidopyrimidinone (UPy) module (Azo-UPy) and a nonphotoactive diamidonaphthyridine (DAN) derivative (Napy-1), is constructed based on a reversible photo-locking approach. Upon UV (390 nm)/Vis (460 nm) light irradiations, photo-switchable quadruple H-bonded dimerization between Azo-UPy and Napy-1 can be achieved with exhibiting 4.8×104 -fold differences in binding strength (ON/OFF ratios). Furthermore, smart polymeric gels with unique photo-controlled macroscopic self-assembly behavior can be fabricated by introducing such quadruple H-bonding array as photo-regulable noncovalent interfacial connections.
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Affiliation(s)
- Shi-Tao Han
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, 321004, Jinhua, P. R. China
| | - Hong-Ying Duan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, 321004, Jinhua, P. R. China
| | - Lan-Yun Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, 321004, Jinhua, P. R. China
| | - Tian-Guang Zhan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, 321004, Jinhua, P. R. China
| | - Li-Juan Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, 321004, Jinhua, P. R. China
| | - Li-Chun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, 321004, Jinhua, P. R. China
| | - Kang-Da Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, 321004, Jinhua, P. R. China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, 310024, Hangzhou, Zhejiang Province, P. R. China
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6
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Xue Y, Ye K, Wang X, Xiang Y, Pang S, Bao C, Zhu L. Precise macroscopic supramolecular assembly of photopatterned hydrogels. Chem Commun (Camb) 2021; 57:8786-8789. [PMID: 34382046 DOI: 10.1039/d1cc03428f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Here we demonstrate that a precise macroscopic supramolecular assembly (MSA) can be achieved using a surface photopatterning strategy. The electrostatic interaction of the photopatterned polyelectrolytes drives hydrogel cuboids to form a stable MSA on a millimeter scale and the spatial controllability of light enables the hydrogels to be assembled into complex supramolecular architectures.
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Affiliation(s)
- Yuan Xue
- Key Laboratory of Functional Materials Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130# Meilong Road, Shanghai 200237, China.
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Hafez A, Liu Q, Santamarina JC. Self-assembly of millimeter-scale magnetic particles in suspension. SOFT MATTER 2021; 17:6935-6941. [PMID: 34105574 DOI: 10.1039/d1sm00588j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Self-assembly is ubiquitous at all scales in nature. Most studies have focused on the self-assembly of micron-scale and nano-scale components. In this study, we explore the self-assembly of millimeter-scale magnetic particles in a bubble-column reactor to form 9 different structures. Two component systems (N-N and S-S particles) assemble faster than one-component systems (all particles have N-S poles) because they have more numerous bonding pathways. In addition, two-components add control to process initiation and evolution, and enable the formation of complex structures such as squares, tetrahedra and cubes. Self-assembly is collision-limited, thus, the formation time increases with the total number of bonds required to form the structure and the injected power. The dimensionless Mason number captures the interplay between hydrodynamic forces and magnetic interactions: self-assembly is most efficient at intermediate Mason numbers (the system is quasi-static at low Mason numbers with limited chances for particle interaction; on the other hand, hydrodynamic forces prevail over dipole-dipole interactions and hinder bonding at high Mason numbers). Two strategies to improve yield involve (1) the inclusion of pre-assembled nucleation templates to prevent the formation of incorrect initial structures that lead to kinetic traps, and (2) the presence of boundaries to geometrically filter unwanted configurations and to overcome kinetic traps through particle-wall collisions. Yield maximization involves system operation at an optimal Mason number, the inclusion of nucleation templates and the use of engineered boundaries (size and shape).
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Affiliation(s)
- Ahmed Hafez
- Earth Science and Engineering, KAUST, Thuwal 23955-6900, Saudi Arabia.
| | - Qi Liu
- Earth Science and Engineering, KAUST, Thuwal 23955-6900, Saudi Arabia.
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8
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Mondal B, Bera R, Ghosh S, Nayak SK, Patra A. Investigation of Morphology-Controlled Ultrafast Relaxation Processes of Aggregated Porphyrin. Chemphyschem 2020; 21:2196-2205. [PMID: 33462915 DOI: 10.1002/cphc.202000482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/22/2020] [Indexed: 11/10/2022]
Abstract
Here, we have synthesized rod and flake shaped morphology of porphyrin aggregates from 5, 10, 15, 20-tetra (4-n-octyloxyphenyl) porphyrin (4-opTPP) molecule which are evident from scanning electron microscopy (SEM). The formation of J-type aggregation is evident from steady state and time-resolved fluorescence spectroscopic studies. Ultrafast transient absorption spectroscopic studies reveal that the excited state lifetime is controlled by the morphology and the time constant for S1→S0 relaxation changes from 3.05 ps to 744 ps with changing the shape from rod to flake, respectively. In spite of similar exciton coupling energy in both the aggregates, the flake shaped aggregates undergo a faster exciton relaxation process and the non-radiative relaxation channels are found to depend on the shape of aggregates. The fundamental understanding of morphology controlled ultrafast relaxation processes of aggregated porphyrin is important for designing efficient light harvesting devices.
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Affiliation(s)
- Bodhisatwa Mondal
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Rajesh Bera
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Srijon Ghosh
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
| | - Sandip K Nayak
- Bio-organic Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Amitava Patra
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India.,Institute of Nano Science and Technology, Habitat Centre, Sector 64, Phase 10, Mohali, 160062, India
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9
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Cheng M, Shi F. Precise Macroscopic Supramolecular Assemblies: Strategies and Applications. Chemistry 2020; 26:15763-15778. [DOI: 10.1002/chem.202001881] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/02/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering and Beijing Laboratory of Biomedical Materials and Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beisanhuan East Road 15 100029 Beijing P. R. China
| | - Feng Shi
- State Key Laboratory of Chemical Resource Engineering and Beijing Laboratory of Biomedical Materials and Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beisanhuan East Road 15 100029 Beijing P. R. China
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Roy B, Govindaraju T. Amino Acids and Peptides as Functional Components in Arylenediimide-Based Molecular Architectonics. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190215] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bappaditya Roy
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P. O., Bengaluru-560064, Karnataka, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P. O., Bengaluru-560064, Karnataka, India
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11
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Consiglio G, Oliveri IP, Failla S, Di Bella S. On the Aggregation and Sensing Properties of Zinc(II) Schiff-Base Complexes of Salen-Type Ligands. Molecules 2019; 24:E2514. [PMID: 31324053 PMCID: PMC6651702 DOI: 10.3390/molecules24132514] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 12/18/2022] Open
Abstract
The zinc(II) ion forms stable complexes with a wide variety of ligands, but those related to Schiff-bases are among the most largely investigated. This review deals with the peculiar aggregation characteristics of Zn(II) Schiff-base complexes from tetradentate N2O2 salen-type ligands, L, derivatives from salicylaldehydes and 1,2-diamines, and is mostly focused on their spectroscopic properties in solution. Thanks to their Lewis acidic character, ZnL complexes show interesting structural, nanostructural, and aggregation/deaggregation properties in relation to the absence/presence of a Lewis base. Deaggregation of these complexes is accompanied by relevant changes of their spectroscopic properties that can appropriately be exploited for sensing Lewis bases. Thus, ZnL complexes have been investigated as chromogenic and fluorogenic chemosensors of charged and neutral Lewis bases, including cell imaging, and have shown to be selective and sensitive to the Lewis basicity of the involved species. From these studies emerges that these popular, Lewis acidic bis(salicylaldiminato)Zn(II) Schiff-base complexes represent classical coordination compounds for modern applications.
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Affiliation(s)
- Giuseppe Consiglio
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Ivan Pietro Oliveri
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
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Zhang X, Xu Y, Zhang X, Wu H, Shen J, Chen R, Xiong Y, Li J, Guo S. Progress on the layer-by-layer assembly of multilayered polymer composites: Strategy, structural control and applications. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2018.10.002] [Citation(s) in RCA: 141] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Liu J, Li S. Capillarity-driven migration of small objects: A critical review. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2019; 42:1. [PMID: 30612222 DOI: 10.1140/epje/i2019-11759-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 11/30/2018] [Indexed: 06/09/2023]
Abstract
The phenomena on the capillarity-driven migration of small objects are full of interest for both scientific and engineering communities, and a critical review is thereby presented. The small objects mentioned here deal with the non-deformable objects, such as particles, rods, disks and metal sheets; and besides them, the soft objects are considered, such as droplets and bubbles. Two types of interfaces are analyzed, i.e., the solid-fluid interface and the fluid-fluid interface. Due to the easily deformable properties of the soft objects and distorted interfacial shapes induced by small objects, a more convenient way to obtain the driving force is through the potential energy of the system. The asymmetric factors causing the object migration include the asymmetric configuration of the interface, and the difference between the interfacial tensions. Finally, a simple outlook on the potential applications of small object migration is made. These behaviors may cast new light on the design of microfluidics and new devices, environment cleaning, oil and gas displacement and mineral industries.
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Affiliation(s)
- Jianlin Liu
- Department of Engineering Mechanics, College of Pipeline and Civil Engineering, China University of Petroleum (East China), 266580, Qingdao, China.
| | - Shanpeng Li
- Department of Engineering Mechanics, College of Pipeline and Civil Engineering, China University of Petroleum (East China), 266580, Qingdao, China
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14
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Synthesis, structure and antitumor studies of a novel decavanadate complex with a wavelike two-dimensional network. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.08.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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15
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Koike R, Iwashita Y, Kimura Y. Emulsion Droplets Stabilized by Close-Packed Janus Regular Polygonal Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12394-12400. [PMID: 30230339 DOI: 10.1021/acs.langmuir.8b02323] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In Pickering-Ramsden emulsions, the packing structure of the colloidal particles at the liquid-liquid (or liquid-gas) interface significantly affects the structure and behavior of the emulsion. Here, using a series of platelike particles with regular polygonal shapes and Janus amphiphilicity, we created emulsion droplets stabilized by close-packed polygonal particles at the interface. The systematic variation of the particle morphology shows that the geometrical features of the regular polygons in (curved) planar packing dominate over the self-assembled structures. The structures are tessellations of triangular, square, and hexagonal particles at the surface for large droplets and regular tetrahedral, cubic, and dodecahedral particle shells of triangular, square, and pentagonal particles for small droplets, respectively. This work creates the possibility of geometrically designing the structure and functionality of emulsions.
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Affiliation(s)
- Ryotaro Koike
- Department of Physics , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Yasutaka Iwashita
- Department of Physics , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
| | - Yasuyuki Kimura
- Department of Physics , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka 819-0395 , Japan
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Abstract
Liquid marbles represented a significant advance in the manipulation of fluids as they used particle films to confine liquid drops, creating a robust and durable soft solid. We exploit this technology to engineering a bioactive hydrogel marble (BHM). Specifically, pristine bioactive glass nanoparticles were chemically tuned to produce biocompatible hydrophobic bioactive glass nanoparticles (H-BGNPs) that shielded a gelatin-based bead. The designed BHM shell promoted the growth of a bone-like apatite layer upon immersion in a physiological environment. The fabrication process allowed the efficient incorporation of drugs and cells into the engineered structure. The BHM provided a simultaneously controlled release of distinct encapsulated therapeutic model molecules. Moreover, the BHM sustained cell encapsulation in a 3D environment as demonstrated by an excellent in vitro stability and cytocompatibility. The engineered structures also showed potential to regulate a pre-osteoblastic cell line into osteogenic commitment. Overall, these hierarchical nanostructured and functional marbles revealed a high potential for future applications in bone tissue engineering.
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Cheng M, Zhu G, Li L, Zhang S, Zhang D, Kuehne AJC, Shi F. Parallel and Precise Macroscopic Supramolecular Assembly through Prolonged Marangoni Motion. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808294] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Guiqiang Zhu
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Lin Li
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Shu Zhang
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Dequn Zhang
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Alexander J. C. Kuehne
- DWI-Leibniz Institute for Interactive Materials; Forckenbeckstr. 50 52056 Aachen Germany
| | - Feng Shi
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
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18
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Cheng M, Zhu G, Li L, Zhang S, Zhang D, Kuehne AJC, Shi F. Parallel and Precise Macroscopic Supramolecular Assembly through Prolonged Marangoni Motion. Angew Chem Int Ed Engl 2018; 57:14106-14110. [DOI: 10.1002/anie.201808294] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Guiqiang Zhu
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Lin Li
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Shu Zhang
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Dequn Zhang
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Alexander J. C. Kuehne
- DWI-Leibniz Institute for Interactive Materials; Forckenbeckstr. 50 52056 Aachen Germany
| | - Feng Shi
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials &; Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
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19
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Ji W, Zhang S, Yukawa S, Onomura S, Sasaki T, Miyazawa K, Zhang Y. Regulating Higher-Order Organization through the Synergy of Two Self-Sorted Assemblies. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Ji
- Bioinspired Soft Matter Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha Onna-son Okinawa 904-0495 Japan
| | - Shijin Zhang
- Bioinspired Soft Matter Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha Onna-son Okinawa 904-0495 Japan
| | - Sachie Yukawa
- Bioinspired Soft Matter Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha Onna-son Okinawa 904-0495 Japan
| | - Shogo Onomura
- Shimadzu Techno-Research Co. Ltd.; 1 Nishinokyo, Nakagyo-ku Kyoto 604-8436 Japan
| | - Toshio Sasaki
- Imaging Section; Okinawa Institute of Science and Technology Graduate School; Japan
| | - Kun'ichi Miyazawa
- Imaging Section; Okinawa Institute of Science and Technology Graduate School; Japan
| | - Ye Zhang
- Bioinspired Soft Matter Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha Onna-son Okinawa 904-0495 Japan
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20
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Ji W, Zhang S, Yukawa S, Onomura S, Sasaki T, Miyazawa K, Zhang Y. Regulating Higher-Order Organization through the Synergy of Two Self-Sorted Assemblies. Angew Chem Int Ed Engl 2018; 57:3636-3640. [PMID: 29411922 DOI: 10.1002/anie.201712575] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 12/12/2022]
Abstract
The extracellular matrix (ECM) is the natural fibrous scaffold that regulates cell behavior in a hierarchical manner. By mimicking the dynamic and reciprocal interactions between ECM and cells, higher-order molecular self-assembly (SA), mediated through the dynamic growth of scaffold-like nanostructures assembled by different molecular components, was developed. Designed and synthesized were two self-sorted coumarin-based gelators, a peptide molecule and a benzoate molecule, which self-assemble into nanofibers and nanobelts, respectively, with different dynamic profiles. Upon the dynamic growth of the fibrous scaffold assembled from peptide gelators, nanobelts assembled from benzoate gelators transform into a layer-by-layer nanosheet, reaching ninefold increase in height. By using light and an enzyme, the spatial-temporal growth of the scaffold can be modified, leading to in situ height regulation of the higher-order architecture.
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Affiliation(s)
- Wei Ji
- Bioinspired Soft Matter Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Shijin Zhang
- Bioinspired Soft Matter Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Sachie Yukawa
- Bioinspired Soft Matter Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Shogo Onomura
- Shimadzu Techno-Research Co. Ltd., 1 Nishinokyo, Nakagyo-ku, Kyoto, 604-8436, Japan
| | - Toshio Sasaki
- Imaging Section, Okinawa Institute of Science and Technology Graduate School, Japan
| | - Kun'ichi Miyazawa
- Imaging Section, Okinawa Institute of Science and Technology Graduate School, Japan
| | - Ye Zhang
- Bioinspired Soft Matter Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
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21
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Affiliation(s)
- Jean-Marie Lehn
- University of Strasbourg Institute of Advanced Study (USIAS) ISIS; 8 allée Gaspard Monge 67000 Strasbourg France
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22
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Macroscopic Supramolecular Assembly and Its Applications. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-018-2069-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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23
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Elacqua E, Zheng X, Shillingford C, Liu M, Weck M. Molecular Recognition in the Colloidal World. Acc Chem Res 2017; 50:2756-2766. [PMID: 28984441 DOI: 10.1021/acs.accounts.7b00370] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Colloidal self-assembly is a bottom-up technique to fabricate functional nanomaterials, with paramount interest stemming from programmable assembly of smaller building blocks into dynamic crystalline domains and photonic materials. Multiple established colloidal platforms feature diverse shapes and bonding interactions, while achieving specific orientations along with short- and long-range order. A major impediment to their universal use as building blocks for predesigned architectures is the inability to precisely dictate and control particle functionalization and concomitant reversible self-assembly. Progress in colloidal self-assembly necessitates the development of strategies that endow bonding specificity and directionality within assemblies. Methodologies that emulate molecular and polymeric three-dimensional (3D) architectures feature elements of covalent bonding, while high-fidelity molecular recognition events have been installed to realize responsive reconfigurable assemblies. The emergence of anisotropic 'colloidal molecules', coupled with the ability to site-specifically decorate particle surfaces with supramolecular recognition motifs, has facilitated the formation of superstructures via directional interactions and shape recognition. In this Account, we describe supramolecular assembly routes to drive colloidal particles into precisely assembled architectures or crystalline lattices via directional noncovalent molecular interactions. The design principles are based upon the fabrication of colloidal particles bearing surface-exposed functional groups that can undergo programmable conjugation to install recognition motifs with high fidelity. Modular and versatile by design, our strategy allows for the introduction and integration of molecular recognition principles into the colloidal world. We define noncovalent molecular interactions as site-specific forces that are predictable (i.e., feature selective and controllable complementary bonding partners) and can engage in tunable high-fidelity interactions. Examples include metal coordination and host-guest interactions as well as hydrogen bonding and DNA hybridization. On the colloidal scale, these interactions can be used to drive the reversible formation of open structures. Key to the design is the ability to covalently conjugate supramolecular motifs onto the particle surface and/or noncovalently associate with small molecules that can mediate and direct assembly. Efforts exploiting the binding strength inherent to DNA hybridization for the preparation of reversible open-packed structures are then detailed. We describe strategies that led to the introduction of dual-responsive DNA-mediated orthogonal assembly as well as colloidal clusters that afford distinct DNA-ligated close-packed lattices. Further focus is placed on two essential and related efforts: the engineering of complex superstructures that undergo phase transitions and colloidal crystals featuring a high density of functional anchors that aid in crystallization. The design principles discussed in this Account highlight the synergy stemming from coupling well-established noncovalent interactions common on the molecular and polymeric length scales with colloidal platforms to engineer reconfigurable functional architectures by design. Directional strategies and methods such as those illustrated herein feature molecular control and dynamic assembly that afford both open-packed 1D and 2D lattices and are amenable to 3D colloidal frameworks. Multiple methods to direct colloidal assembly have been reported, yet few are capable of crystallizing 2D and 3D architectures of interest for optical data storage, electronics, and photonics. Indeed, early implications are that [supra]molecular control over colloidal assembly can fabricate rationally structured designer materials from simple fundamental building blocks.
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Affiliation(s)
- Elizabeth Elacqua
- Molecular
Design Institute and Department of Chemistry, New York University, New York, New York 10003-6688, United States
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802-1503, United States
| | - Xiaolong Zheng
- Molecular
Design Institute and Department of Chemistry, New York University, New York, New York 10003-6688, United States
| | - Cicely Shillingford
- Molecular
Design Institute and Department of Chemistry, New York University, New York, New York 10003-6688, United States
| | - Mingzhu Liu
- Molecular
Design Institute and Department of Chemistry, New York University, New York, New York 10003-6688, United States
| | - Marcus Weck
- Molecular
Design Institute and Department of Chemistry, New York University, New York, New York 10003-6688, United States
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24
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Taniguchi Y, Sazali MAB, Kobayashi Y, Arai N, Kawai T, Nakashima T. Programmed Self-Assembly of Branched Nanocrystals with an Amphiphilic Surface Pattern. ACS NANO 2017; 11:9312-9320. [PMID: 28872823 DOI: 10.1021/acsnano.7b04719] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Site-selective surface modification on the shape-controlled nanocrystals is a key approach in the programmed self-assembly of inorganic colloidal materials. This study demonstrates a simple methodology to gain self-assemblies of semiconductor nanocrystals with branched shapes through tip-to-tip attachment. Short-chained water-soluble cationic thiols are employed as a surface ligand for CdSe tetrapods and CdSe/CdS core/shell octapods. Because of the less affinity of arm-tip to the surface ligands compared to the arm-side wall, the tip-surface becomes uncapped to give a hydrophobic nature, affording an amphiphilic surface pattern. The amphiphilic tetrapods aggregated into porous agglomerates through tip-to-tip connection in water, while they afforded a hexagonally arranged Kagome-like two-dimensional (2D) assembly by the simple casting of aqueous dispersion with the aid of a convective self-assembly mechanism. A 2D net-like assembly was similarly obtained from amphiphilic octapods. A dissipative particle dynamics simulation using a planar tripod model with an amphiphilic surface pattern reproduced the formation of the Kagome-like assembly in a 2D confined space, demonstrating that the lateral diffusion of nanoparticles and the firm contacts between the hydrophobic tips play crucial roles in the self-assembly.
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Affiliation(s)
- Yuki Taniguchi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST) , Ikoma, Nara 630-0192, Japan
| | | | - Yusei Kobayashi
- Department of Mechanical Engineering, Kindai Unversity , Higashiosaka, Osaka 577-8502, Japan
| | - Noriyoshi Arai
- Department of Mechanical Engineering, Kindai Unversity , Higashiosaka, Osaka 577-8502, Japan
| | - Tsuyoshi Kawai
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST) , Ikoma, Nara 630-0192, Japan
| | - Takuya Nakashima
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST) , Ikoma, Nara 630-0192, Japan
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25
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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.
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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
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26
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Kim DO, Pack M, Hu H, Kim H, Sun Y. Deposition of Colloidal Drops Containing Ellipsoidal Particles: Competition between Capillary and Hydrodynamic Forces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11899-11906. [PMID: 27788012 DOI: 10.1021/acs.langmuir.6b03221] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ellipsoidal particles have previously been shown to suppress the coffee-ring effect in millimeter-sized colloidal droplets. Compared to their spherical counterparts, ellipsoidal particles experience stronger adsorption energy to the drop surface where the anisotropy-induced deformation of the liquid-air interface leads to much greater capillary attractions between particles. Using inkjet-printed colloidal drops of varying drop size, particle concentration, and particle aspect ratio, the present work demonstrates how the suppression of the coffee ring is not only a function of particle anisotropy but rather a competition between the propensity for particles to assemble at the drop surface via capillary interactions and the evaporation-driven particle motion to the contact line. For ellipsoidal particles on the drop surface, the capillary force (Fγ) increases with the particle concentration and aspect ratio, and the hydrodynamic force (Fμ) increases with the particle aspect ratio but decreases with drop size. When Fγ/Fμ > 1, the surface ellipsoids form a coherent network inhibiting their migration to the drop contact line, and the coffee-ring effect is suppressed, whereas when Fγ/Fμ < 1, the ellipsoids move to the contact line, resulting in coffee-ring deposition.
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Affiliation(s)
- Dong-Ook Kim
- Department of Mechanical Engineering and Mechanics, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | - Min Pack
- Department of Mechanical Engineering and Mechanics, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | - Han Hu
- Department of Mechanical Engineering and Mechanics, Drexel University , Philadelphia, Pennsylvania 19104, United States
| | - Hyoungsoo Kim
- Department of Mechanical and Aerospace Engineering, Princeton University , Princeton, New Jersey 08544, United States
| | - Ying Sun
- Department of Mechanical Engineering and Mechanics, Drexel University , Philadelphia, Pennsylvania 19104, United States
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27
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Consiglio G, Oliveri IP, Failla S, Di Bella S. Supramolecular Aggregates of Defined Stereochemical Scaffolds: Aggregation/Deaggregation in Schiff-Base Zinc(II) Complexes Derived from Enantiopure trans-1,2-Diaminocyclohexane. Inorg Chem 2016; 55:10320-10328. [DOI: 10.1021/acs.inorgchem.6b01580] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Giuseppe Consiglio
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Ivan Pietro Oliveri
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
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28
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Zemb T, Kunz W. Weak aggregation: State of the art, expectations and open questions. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Mechanical Fracturing of Core-Shell Undercooled Metal Particles for Heat-Free Soldering. Sci Rep 2016; 6:21864. [PMID: 26902483 PMCID: PMC4763186 DOI: 10.1038/srep21864] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 02/02/2016] [Indexed: 11/18/2022] Open
Abstract
Phase-change materials, such as meta-stable undercooled (supercooled) liquids, have been widely recognized as a suitable route for complex fabrication and engineering. Despite comprehensive studies on the undercooling phenomenon, little progress has been made in the use of undercooled metals, primarily due to low yields and poor stability. This paper reports the use of an extension of droplet emulsion technique (SLICE) to produce undercooled core-shell particles of structure; metal/oxide shell-acetate (‘/’ = physisorbed, ‘-’ = chemisorbed), from molten Field’s metal (Bi-In-Sn) and Bi-Sn alloys. These particles exhibit stability against solidification at ambient conditions. Besides synthesis, we report the use of these undercooled metal, liquid core-shell, particles for heat free joining and manufacturing at ambient conditions. Our approach incorporates gentle etching and/or fracturing of outer oxide-acetate layers through mechanical stressing or shearing, thus initiating a cascade entailing fluid flow with concomitant deformation, combination/alloying, shaping, and solidification. This simple and low cost technique for soldering and fabrication enables formation of complex shapes and joining at the meso- and micro-scale at ambient conditions without heat or electricity.
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30
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Abstract
Dendritic molecules are an exciting research topic because of their highly branched architecture, multiple functional groups on the periphery, and very pertinent features for various applications. Self-assembling dendritic amphiphiles have produced different nanostructures with unique morphologies and properties. Since their self-assembly in water is greatly relevant for biomedical applications, researchers have been looking for a way to rationally design dendritic amphiphiles for the last few decades. We review here some recent developments from investigations on the self-assembly of dendritic amphiphiles into various nanostructures in water on the molecular level. The main content of the review is divided into sections according to the different nanostructure morphologies resulting from the dendritic amphiphiles' self-assembly. Finally, we conclude with some remarks that highlight the self-assembling features of these dendritic amphiphiles.
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Affiliation(s)
- Bala N S Thota
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Berlin 14195, Germany
| | - Leonhard H Urner
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Berlin 14195, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Berlin 14195, Germany
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31
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Lash MH, Fedorchak MV, McCarthy JJ, Little SR. Scaling up self-assembly: bottom-up approaches to macroscopic particle organization. SOFT MATTER 2015; 11:5597-5609. [PMID: 25947543 DOI: 10.1039/c5sm00764j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This review presents an overview of recent work in the field of non-Brownian particle self-assembly. Compared to nanoparticles that naturally self-assemble due to Brownian motion, larger, non-Brownian particles (d > 6 μm) are less prone to autonomously organize into crystalline arrays. The tendency for particle systems to experience immobilization and kinetic arrest grows with particle radius. In order to overcome this kinetic limitation, some type of external driver must be applied to act as an artificial "thermalizing force" upon non-Brownian particles, inducing particle motion and subsequent crystallization. Many groups have explored the use of various agitation methods to overcome the natural barriers preventing self-assembly to which non-Brownian particles are susceptible. The ability to create materials from a bottom-up approach with these characteristics would allow for precise control over their pore structure (size and distribution) and surface properties (topography, functionalization and area), resulting in improved regulation of key characteristics such as mechanical strength, diffusive properties, and possibly even photonic properties. This review will highlight these approaches, as well as discuss the potential impact of bottom-up macroscale particle assembly. The applications of such technology range from customizable and autonomously self-assembled niche microenvironments for drug delivery and tissue engineering to new acoustic dampening, battery, and filtration materials, among others. Additionally, crystals made from non-Brownian particles resemble naturally derived materials such as opals, zeolites, and biological tissue (i.e. bone, cartilage and lung), due to their high surface area, pore distribution, and tunable (multilevel) hierarchy.
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Affiliation(s)
- M H Lash
- Department of Chemical and Petroleum Engineering, 940 Benedum Hall, 3700 O'Hara Street, Pittsburgh, PA 15261, USA.
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32
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Zhang Y, Barboiu M. Constitutional Dynamic Materials—Toward Natural Selection of Function. Chem Rev 2015; 116:809-34. [DOI: 10.1021/acs.chemrev.5b00168] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yan Zhang
- Adaptive Supramolecular Nanosystems
Group, Institut Européen des Membranes—UMR CNRS 5635, Place Eugène
Bataillon, CC 047, F-34095 Montpellier, France
| | - Mihail Barboiu
- Adaptive Supramolecular Nanosystems
Group, Institut Européen des Membranes—UMR CNRS 5635, Place Eugène
Bataillon, CC 047, F-34095 Montpellier, France
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33
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Pop L, Dumitru F, Hădade ND, Legrand YM, van der Lee A, Barboiu M, Grosu I. Exclusive Hydrophobic Self-Assembly of Adaptive Solid-State Networks of Octasubstituted 9,9′-Spirobifluorenes. Org Lett 2015; 17:3494-7. [DOI: 10.1021/acs.orglett.5b01576] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lidia Pop
- Supramolecular
Organic and Organometallic Chemistry Center (SOOMCC), Babes-Bolyai University, 11 Arany Janos str., 400028 Cluj-Napoca, Romania
| | - Florina Dumitru
- Adaptive
Supramolecular Nanosystems Group, Institut Européen des Membranes − ENSCM-UMII-CNRS 5635, Place Eugène Bataillon, CC
047, F-34095 Cedex 5 Montpellier, France
- Department
of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 1, Polizu st., RO-011061 Bucharest, Romania
| | - Niculina D. Hădade
- Supramolecular
Organic and Organometallic Chemistry Center (SOOMCC), Babes-Bolyai University, 11 Arany Janos str., 400028 Cluj-Napoca, Romania
| | - Yves-Marie Legrand
- Adaptive
Supramolecular Nanosystems Group, Institut Européen des Membranes − ENSCM-UMII-CNRS 5635, Place Eugène Bataillon, CC
047, F-34095 Cedex 5 Montpellier, France
| | - Arie van der Lee
- Adaptive
Supramolecular Nanosystems Group, Institut Européen des Membranes − ENSCM-UMII-CNRS 5635, Place Eugène Bataillon, CC
047, F-34095 Cedex 5 Montpellier, France
| | - Mihail Barboiu
- Adaptive
Supramolecular Nanosystems Group, Institut Européen des Membranes − ENSCM-UMII-CNRS 5635, Place Eugène Bataillon, CC
047, F-34095 Cedex 5 Montpellier, France
| | - Ion Grosu
- Supramolecular
Organic and Organometallic Chemistry Center (SOOMCC), Babes-Bolyai University, 11 Arany Janos str., 400028 Cluj-Napoca, Romania
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34
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Xiao M, Xian Y, Shi F. Precise Macroscopic Supramolecular Assembly by Combining Spontaneous Locomotion Driven by the Marangoni Effect and Molecular Recognition. Angew Chem Int Ed Engl 2015; 54:8952-6. [PMID: 26095923 DOI: 10.1002/anie.201502349] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Indexed: 12/17/2022]
Abstract
Macroscopic supramolecular assembly bridges fundamental research on molecular recognition and the potential applications as bulk supramolecular materials. However, challenges remain to realize stable precise assembly, which is significant for further functions. To handle this issue, the Marangoni effect is applied to achieve spontaneous locomotion of macroscopic building blocks to reach interactive distance, thus contributing to formation of ordered structures. By increasing the density of the building blocks, the driving force for assembly transforms from a hydrophobic-hydrophobic interaction to hydrophilic-hydrophilic interaction, which is favorable for introducing hydrophilic coatings with supramolecular interactive groups on matched surfaces, consequently realizing the fabrication of stable precise macroscopic supramolecular assemblies.
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Affiliation(s)
- Meng Xiao
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029 (China)
| | - Yiming Xian
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029 (China)
| | - Feng Shi
- State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029 (China).
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35
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Xiao M, Xian Y, Shi F. Precise Macroscopic Supramolecular Assembly by Combining Spontaneous Locomotion Driven by the Marangoni Effect and Molecular Recognition. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502349] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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36
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Sakai H, Kamimura T, Tani F, Hasobe T. Supramolecular photovoltaic cells utilizing inclusion complexes composed of Li+@C60 and cyclic porphyrin dimer. J PORPHYR PHTHALOCYA 2015. [DOI: 10.1142/s1088424614501156] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We have newly constructed supramolecular photovoltaic cells using inclusion complexes of lithium-ion-encapsulated [60]fullerene ( Li +@ C 60) and cyclic porphyrin dimers (M-CPDPy, M = H 4 and Ni 2). First, supramolecular inclusion complexes of Li +@ C 60 and M-CPDPy were prepared in MeCN/PhCN (3/1, v/v) by rapid injection method. The molecular aggregates with spherical nanoparticles demonstrated a broad absorption property in the visible region. The macroscopic structures were also estimated to be ca. 200 nm in diameter by transmission electron microscope (TEM) and dynamic light scattering (DLS) measurements. The photoelectrochemical solar cells composed of these assemblies on nanostructured SnO 2 electrode were fabricated by electrophoretic deposition method. The photoelectrochemical behavior of the nanostructured SnO 2 film of supramolecular nanoassemblies of Li +@ C 60 and M-CPDPy is significantly higher than those of the single component films ( Li +@ C 60 or M-CPDPy) and supramolecular inclusion complexes of pristine C 60 and M-CPDPy.
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Affiliation(s)
- Hayato Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Takuya Kamimura
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 812-8581, Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 812-8581, Japan
| | - Taku Hasobe
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
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37
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Schönherr H. Forces and thin water film drainage in deformable asymmetric nanoscale contacts. ACS NANO 2015; 9:12-15. [PMID: 25623914 DOI: 10.1021/acsnano.5b00177] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Gas-liquid interfaces are omnipresent in daily life, and processes involving these interfaces are the basis for a broad range of applications that span from established industrial processes to modern microengineering, technology, and medical applications for diagnosis and treatment. Despite the rapid progress in understanding intermolecular forces at such interfaces from a theoretical point of view and, in particular, from an experimental point of view down to sub-nanometer length scales, the quantitative description of all relevant forces, particularly the hydrophobic interaction and the dynamic behavior of nanometer-scale confined water films, was until now unsatisfactory. This situation is particularly the case for the elusive description and understanding of the origins of the so-called hydrophobic interaction. For soft, deformable interfaces, such as those found in asymmetric contacts between gas bubbles and a solid, a complete picture has begun to emerge that has direct consequences for interfacial water at (bio)interfaces, functionalized gas microbubbles, surface nanobubbles, and beyond.
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Affiliation(s)
- Holger Schönherr
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen , Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
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38
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Haridas V, Sapala AR, Jasinski JP. Self-assembling triazolophanes: from croissants through donuts to spherical vesicles. Chem Commun (Camb) 2015; 51:6905-8. [DOI: 10.1039/c4cc09587a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed ultramicroscopic analysis of three novel triazolophanes demonstrated a hierarchical self-assembly mechanism. These macrocycles self-assemble in a concentration dependent manner to hemi-toroids, toroids and finally to vesicles. The finding was supported by ultramicroscopy and X-ray crystal structure studies.
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Affiliation(s)
- V. Haridas
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- New Delhi-110016
- India
| | - Appa Rao Sapala
- Department of Chemistry
- Indian Institute of Technology Delhi (IITD)
- New Delhi-110016
- India
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39
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Kubo Y, Nishiyabu R, James TD. Hierarchical supramolecules and organization using boronic acid building blocks. Chem Commun (Camb) 2015; 51:2005-20. [DOI: 10.1039/c4cc07712a] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Current progress on hierarchical supramolecules using boronic acids has been highlighted in this feature article. The feasibility of the structure-directing ability is fully discussed from the standpoint of the generation of new smart materials.
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Affiliation(s)
- Yuji Kubo
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Ryuhei Nishiyabu
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
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40
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Wang X, Miller DS, de Pablo JJ, Abbott NL. Organized assemblies of colloids formed at the poles of micrometer-sized droplets of liquid crystal. SOFT MATTER 2014; 10:8821-8. [PMID: 25284139 PMCID: PMC4241360 DOI: 10.1039/c4sm01784f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report on the formation of organized assemblies of 1 μm-in-diameter colloids (polystyrene (PS)) at the poles of water-dispersed droplets (diameters 7-20 μm) of nematic liquid crystal (LC). For 4-cyano-4'-pentylbiphenyl droplets decorated with two to five PS colloids, we found 32 distinct arrangements of the colloids to form at the boojums of bipolar droplet configurations. Significantly, all but one of these configurations (a ring comprised of five PS colloids) could be mapped onto a local (non-close packed) hexagonal lattice. To provide insight into the origin of the hexagonal lattice, we investigated planar aqueous-LC interfaces, and found that organized assemblies of PS colloids did not form at these interfaces. Experiments involving the addition of salts revealed that a repulsive interaction of electrostatic origin prevented formation of assemblies at planar interfaces, and that regions of high splay near the poles of the LC droplets generated cohesive interactions between colloids that could overcome the repulsion. Support for this interpretation was obtained from a model that included (i) a long-range attraction between adsorbed colloids and the boojum due to the increasing rate of strain (splay) of LC near the boojum (splay attraction), (ii) an attractive inter-colloid interaction that reflects the quadrupolar symmetry of the strain in the LC around the colloids, and (iii) electrostatic repulsion between colloids. The model predicts that electrostatic repulsion between colloids can lead to a ∼1000kBT energy barrier at planar interfaces of LC films, and that the repulsive interaction can be overcome by splay attraction of the colloids to the boojums of the LC droplets. Overall, the results reported in this paper advance our understanding of the directed assembly of colloids at interfaces of LC droplets.
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Affiliation(s)
- Xiaoguang Wang
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706-1607, USA.
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41
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Cheng M, Ju G, Zhang Y, Song M, Zhang Y, Shi F. Supramolecular assembly of macroscopic building blocks through self-propelled locomotion by dissipating chemical energy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:3907-3911. [PMID: 24838346 DOI: 10.1002/smll.201400922] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/04/2014] [Indexed: 06/03/2023]
Abstract
Chemical energy supplied by the catalytic decomposition of H2O2 is introduced into macroscopic building blocks, which self-propel, interact with each other, and finally assemble into ordered and advanced structures. The geometry is highly dependent on the way that the catalyst is loaded. The integration of catalyst and building block provides assembling component as well as its energy of motion.
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Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering & Key Laboratory of Carbon Fiber and Functional Polymer, Ministry of Education, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang Distrist, Beijing, 100029, China
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42
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Self-assembly of mesoscale isomers: the role of pathways and degrees of freedom. PLoS One 2014; 9:e108960. [PMID: 25299051 PMCID: PMC4191966 DOI: 10.1371/journal.pone.0108960] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Accepted: 09/05/2014] [Indexed: 02/08/2023] Open
Abstract
The spontaneous self-organization of conformational isomers from identical precursors is of fundamental importance in chemistry. Since the precursors are identical, it is the multi-unit interactions, characteristics of the intermediates, and assembly pathways that determine the final conformation. Here, we use geometric path sampling and a mesoscale experimental model to investigate the self-assembly of a model polyhedral system, an octahedron, that forms two isomers. We compute the set of all possible assembly pathways and analyze the degrees of freedom or rigidity of intermediates. Consequently, by manipulating the degrees of freedom of a precursor, we were able to experimentally enrich the formation of one isomer over the other. Our results suggest a new approach to direct pathways in both natural and synthetic self-assembly using simple geometric criteria. We also compare the process of folding and unfolding in this model with a geometric model for cyclohexane, a well-known molecule with chair and boat conformations.
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43
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Li R, Bian K, Hanrath T, Bassett WA, Wang Z. Decoding the superlattice and interface structure of truncate PbS nanocrystal-assembled supercrystal and associated interaction forces. J Am Chem Soc 2014; 136:12047-55. [PMID: 25100031 DOI: 10.1021/ja5057032] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Large scale three-dimensional supercrystals were grown by controlling evaporation of truncate PbS nanocrystal (NC) dispersed hexane suspensions. Electron microscopy analysis confirmed the nature of single supercrystal with a face-centered cubic (fcc) lattice. Synchrotron small/wide angle scattering (SAXS/WAXS) images from three typical crystallographic projections allowed ultimate reconstruction of shape orientations of NCs at different crystallographic sites. Position exchange of distinctly oriented NCs between crystallographic sites produces two nondegeneration shape-related pseudo-polymorphs of superlattice that accordingly reduce symmetry from Oh to C4h and C2h with various facet-to-facet arrangements, respectively. In situ SAXS measurements of NC-assembled supercrystal and lead oleate and oleic acid upon pressurization provide additional insights into surface ligand density and the nature of ligand-NC interactions and resulting interface structure. These results allow for feasible evaluation of both NC shape and ligand conformation enabled effects that govern the formation and stability of truncate NC assemblies with various superlattice polymorphs and associated NC-ligand interactions in solvent-mediated assembled processes.
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Affiliation(s)
- Ruipeng Li
- Cornell High Energy Synchrotron Source, Wilson Laboratory, ‡School of Chemical and Biomolecular Engineering, and §Department of Earth and Atmospheric Sciences, Cornell University , Ithaca, New York 14853, United States
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44
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Nakamura T, Takashima Y, Hashidzume A, Yamaguchi H, Harada A. A metal-ion-responsive adhesive material via switching of molecular recognition properties. Nat Commun 2014; 5:4622. [PMID: 25099995 PMCID: PMC4143919 DOI: 10.1038/ncomms5622] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 07/08/2014] [Indexed: 12/25/2022] Open
Abstract
Common adhesives stick to a wide range of materials immediately after they are applied to the surfaces. To prevent indiscriminate sticking, smart adhesive materials that adhere to a specific target surface only under particular conditions are desired. Here we report a polymer hydrogel modified with both β-cyclodextrin (βCD) and 2,2'-bipyridyl (bpy) moieties (βCD-bpy gel) as a functional adhesive material responding to metal ions as chemical stimuli. The adhesive property of βCD-bpy gel based on interfacial molecular recognition is expressed by complexation of metal ions to bpy that controlled dissociation of supramolecular cross-linking of βCD-bpy. Moreover, adhesion of βCD-bpy gel exhibits selectivity on the kinds of metal ions, depending on the efficiency of metal-bpy complexes in cross-linking. Transduction of two independent chemical signals (metal ions and host-guest interactions) is achieved in this adhesion system, which leads to the development of highly orthogonal macroscopic joining of multiple objects.
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Affiliation(s)
- Takashi Nakamura
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan
| | - Akihito Hashidzume
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan
| | - Akira Harada
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan
- Japan Science and Technology Agency (JST), Core Research for Evolutional Science and Technology (CREST), 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
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45
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Hu P, Zhuang J, Chou LY, Lee HK, Ling XY, Chuang YC, Tsung CK. Surfactant-Directed Atomic to Mesoscale Alignment: Metal Nanocrystals Encased Individually in Single-Crystalline Porous Nanostructures. J Am Chem Soc 2014; 136:10561-4. [DOI: 10.1021/ja5048522] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Pan Hu
- Department
of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Jia Zhuang
- Department
of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Lien-Yang Chou
- Department
of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Hiang Kwee Lee
- Division of Chemistry
and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Xing Yi Ling
- Division of Chemistry
and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Yu-Chun Chuang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Chia-Kuang Tsung
- Department
of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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46
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Cheng M, Liu Q, Xian Y, Shi F. Programmable macroscopic supramolecular assembly through combined molecular recognition and magnetic field-assisted localization. ACS APPLIED MATERIALS & INTERFACES 2014; 6:7572-7578. [PMID: 24712651 DOI: 10.1021/am500910y] [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
Macroscopic supramolecular assembly is a promising bottom-up method to construct ordered three-dimensional structures in a programmable way because of its flexible tailoring features. To handle the challenges of precisely aligning the building blocks, we proposed the combination of magnetic field-assisted localization for the locomotion of building blocks and host/guest supramolecular recognition for their immobilization. By applying this strategy, we have realized the stepwise construction of microscale glass fibers into an ordered complex pattern. Furthermore, through the introduction of a competitive guest molecule to disassemble the assembled structure, we demonstrated that the interaction between the fibers and the substrate was supramolecular rather than nonselective stickiness. Multivalent theory was used to interpret the mechanism for the interaction process.
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Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering & Key Laboratory of Carbon Fiber and Functional Polymer, Ministry of Education, Beijing University of Chemical Technology , 15 Beisanhuan East Road, Chaoyang Distrist, Beijing 100029, China
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47
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Cheng M, Shi F, Li J, Lin Z, Jiang C, Xiao M, Zhang L, Yang W, Nishi T. Macroscopic supramolecular assembly of rigid building blocks through a flexible spacing coating. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:3009-3013. [PMID: 24453055 DOI: 10.1002/adma.201305177] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 12/10/2013] [Indexed: 06/03/2023]
Abstract
Macroscopic supramolecular assembly is a promising method for manufacturing macroscopic, ordered structures for tissue-engineering scaffolds. A flexible spacing coating is shown to overcome undesired surface and size effects and to enable assembly of macroscopic cubes with host/guest groups. The assembled pairs disassembled upon introduction of competitive guest molecules, thereby demonstrating a multivalent assembly mechanism.
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Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource, Engineering & Key Laboratory of Carbon Fiber and Functional Polymer, Ministry of Education, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing, 100029, P.R. China
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48
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Hasobe T. Photo- and electro-functional self-assembled architectures of porphyrins. Phys Chem Chem Phys 2014; 14:15975-87. [PMID: 23093225 DOI: 10.1039/c2cp42957h] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent developments in supramolecular strategies have enabled us to construct novel well-defined assemblies of dye molecules. These fundamental researches of such organic materials also entail the synthetic and photophysical processes of molecular aggregates at the nano- and micro-meter scale, since their optical properties significantly differ from those of monomeric species. One of the promising candidates for such functional molecules is a porphyrin dye, which acts as an electron donor as well as a sensitizer. In this perspective, the focus is on the recent advances in the construction of optically and electronically functionalized molecular architectures of porphyrins for light energy conversion and electronics. First, porphyrin aggregates with morphologies such as cube, rod and fiber, which are prepared by three different supramolecular techniques, are reported. Then, we discuss composite molecular nanoarchitectures of porphyrins and carbon nanotubes such as single-wall carbon nanotubes (SWCNTs), stacked-cup carbon nanotubes (SCCNTs) and carbon nanohorns (CNHs). Finally, the structural and photophysical properties of the composite assemblies of porphyrins and graphenes including polycyclic aromatic hydrocarbons (PAH) are presented.
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Affiliation(s)
- Taku Hasobe
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Japan.
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49
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Micellar and pre-micellar aggregates of oxyethylated calixarenes studied by ESR of spin probes and cyclic voltammetry. Russ Chem Bull 2014. [DOI: 10.1007/s11172-013-0191-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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50
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Nakahata M, Takashima Y, Harada A. Redox-Responsive Macroscopic Gel Assembly Based on Discrete Dual Interactions. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310295] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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