1
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Mostarac D, Novak EV, Kantorovich SS. Relating the length of a magnetic filament with solvophobic, superparamagnetic colloids to its properties in applied magnetic fields. Phys Rev E 2023; 108:054601. [PMID: 38115450 DOI: 10.1103/physreve.108.054601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/08/2023] [Indexed: 12/21/2023]
Abstract
The idea of creating polymer-like structures by crosslinking magnetic nanoparticles (MNPs) opened an alternative perspective on controlling the rheological properties of magnetoresponsive systems, because unlike suspensions of self-assembled MNPs, whose cluster sizes are sensitive to temperature, magnetic filaments (MFs) preserve their initial topology. Considering the length scales characteristic of single-domain nanoparticles used to create MFs, the MNPs can be both ferro- and superparamagnetic. Moreover, steric or electrostatic stabilization might not fully screen van der Waals interactions. In this paper, using coarse-grained molecular dynamics simulations, we investigate the influence of susceptibility of superparamagnetic MNPs-their number and central attraction forces between them-on the polymeric, structural, and magnetic properties of MFs with varied backbone rigidity. We find that, due to the general tendency of MFs with superparamagnetic monomers to bend, reinforced for colloids with a high susceptibility, properties of MFs vary greatly with chain length.
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Affiliation(s)
- Deniz Mostarac
- Computational and Soft Matter Physics, University of Vienna, 1090, Vienna, Austria
| | - Ekaterina V Novak
- Department of Theoretical and Mathematical Physics, Ural Federal University, 620000, Ekaterinburg, Russia
| | - Sofia S Kantorovich
- Computational and Soft Matter Physics, University of Vienna, 1090, Vienna, Austria and Research Platform Mathematics-Magnetism-Materials, University of Vienna, 1090, Vienna, Austria
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2
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Sato M. Two-Dimensional Structures Formed by Triblock Patchy Particles with Two Different Patches. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15404-15412. [PMID: 36446728 DOI: 10.1021/acs.langmuir.2c02699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Two-dimensional structures formed by spherical triblock patchy particles are examined by performing Monte Carlo simulations. In the model, the triblock patchy particles have two different types of patches at the polar positions. The patch sizes are different from each other, and the attractive interaction acts only between the same types of patches. The particles translate on a flat plane and rotate three-dimensionally. When varying the two patch sizes, the pressure, and interaction energy, various structures are observed. When the difference between two patch sizes is small, kagome lattices, hexagonal structures, and two-dimensional dodecagonal quasi-crystal structures are observed. When the difference between two patch sizes is large, chain-like structures are created. With lower temperature, sparse structures such as ring-like structures form.
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Affiliation(s)
- Masahide Sato
- Emerging Media Initiative, Kanazawa University, Kanazawa 920-1192, Japan
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3
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Ruffino R, Tuccitto N, Sfuncia G, Nicotra G, Li-Destri G, Marletta G. Direct Measurement of Surfactant-Mediated Picoforces among Nanoparticles in a Quasi-Two-Dimensional Environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12281-12291. [PMID: 36172718 PMCID: PMC9558483 DOI: 10.1021/acs.langmuir.2c01928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/21/2022] [Indexed: 06/16/2023]
Abstract
The lack of methodologies which enable us to measure forces acting between nanomaterials is one of the factors limiting the full comprehension of their behavior and their more effective exploitation in new devices. Here we exploit the irreversible adsorption of surfactant-decorated nanoparticles at the air/water interface to investigate interparticle forces and the effect of the surfactant structure on them. We measured the interparticle repulsive forces as a function of the modulation of the interparticle distance by simultaneously performing compression isotherms and the grazing incidence small-angle X-ray scattering (GISAXS) structural characterization of the monolayers at water-vapor interfaces. Our results demonstrate that the short-range interparticle forces are strongly affected by the presence of the organic ligands, which are shown to be able to influence the interparticle repulsions even when added in micromolar amounts. In particular, we demonstrate the predominant steric nature of short-range forces, which are accounted for in terms of the compression-induced stretched-to-coiled conformational transition of the ligand hydrophobic tail.
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Affiliation(s)
- Roberta Ruffino
- Laboratory
for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department
of Chemical Sciences, University of Catania, viale A. Doria 6, 95125 Catania, Italy
| | - Nunzio Tuccitto
- Laboratory
for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department
of Chemical Sciences, University of Catania, viale A. Doria 6, 95125 Catania, Italy
| | - Gianfranco Sfuncia
- Consiglio
Nazionale delle Ricerche, Istituto per la Microelettronica e Microsistemi, 95121 Catania I, Italy
| | - Giuseppe Nicotra
- Consiglio
Nazionale delle Ricerche, Istituto per la Microelettronica e Microsistemi, 95121 Catania I, Italy
| | - Giovanni Li-Destri
- Laboratory
for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department
of Chemical Sciences, University of Catania, viale A. Doria 6, 95125 Catania, Italy
| | - Giovanni Marletta
- Laboratory
for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department
of Chemical Sciences, University of Catania, viale A. Doria 6, 95125 Catania, Italy
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4
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Abstract
Polymers under confinement exhibit different structures and properties from the bulk. While block copolymers (BCPs) create well-defined micelles in solution, two-dimensional (2D) spatial confinement at the air-water interface constrains the chain conformations and deforms the micellar structure, thus forming a surface micelle. The BCP surface micelles open up an opportunity in nanoscience and engineering by serving as an interfacial modifier and structural platform. Nevertheless, a scaling law, a principle governing the micellar structure, is absent. Herein, we report a unified scaling relation to describe the combinational structure of BCP surface micelles in two and three dimensions and further reveal their formation mechanism in line with the suggested scaling relation. We investigated the intrinsic scaling relations in a surface pressure-free environment by introducing a concept of excluded volume-dependent scaling exponent based on the scaling theory of 2D polymers. In addition, an extrinsic scaling relation is derived for the surface pressure-dependent corona scaling.
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Affiliation(s)
- Dong Hyup Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - So Youn Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
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5
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Wang ST, Zhang H, Xuan S, Nykypanchuk D, Zhang Y, Freychet G, Ocko BM, Zuckermann RN, Todorova N, Gang O. Compact Peptoid Molecular Brushes for Nanoparticle Stabilization. J Am Chem Soc 2022; 144:8138-8152. [PMID: 35452210 DOI: 10.1021/jacs.2c00743] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Controlling the interfaces and interactions of colloidal nanoparticles (NPs) via tethered molecular moieties is crucial for NP applications in engineered nanomaterials, optics, catalysis, and nanomedicine. Despite a broad range of molecular types explored, there is a need for a flexible approach to rationally vary the chemistry and structure of these interfacial molecules for controlling NP stability in diverse environments, while maintaining a small size of the NP molecular shell. Here, we demonstrate that low-molecular-weight, bifunctional comb-shaped, and sequence-defined peptoids can effectively stabilize gold NPs (AuNPs). The generality of this robust functionalization strategy was also demonstrated by coating of silver, platinum, and iron oxide NPs with designed peptoids. Each peptoid (PE) is designed with varied arrangements of a multivalent AuNP-binding domain and a solvation domain consisting of oligo-ethylene glycol (EG) branches. Among designs, a peptoid (PE5) with a diblock structure is demonstrated to provide a superior nanocolloidal stability in diverse aqueous solutions while forming a compact shell (∼1.5 nm) on the AuNP surface. We demonstrate by experiments and molecular dynamics simulations that PE5-coated AuNPs (PE5/AuNPs) are stable in select organic solvents owing to the strong PE5 (amine)-Au binding and solubility of the oligo-EG motifs. At the vapor-aqueous interface, we show that PE5/AuNPs remain stable and can self-assemble into ordered 2D lattices. The NP films exhibit strong near-field plasmonic coupling when transferred to solid substrates.
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Affiliation(s)
- Shih-Ting Wang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Brookhaven Avenue, Upton, New York 11973, United States
| | - Honghu Zhang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Brookhaven Avenue, Upton, New York 11973, United States
| | - Sunting Xuan
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Dmytro Nykypanchuk
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Brookhaven Avenue, Upton, New York 11973, United States
| | - Yugang Zhang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Brookhaven Avenue, Upton, New York 11973, United States
| | - Guillaume Freychet
- Energy Sciences Directorate/Photon Science Division, NSLS-II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Benjamin M Ocko
- Energy Sciences Directorate/Photon Science Division, NSLS-II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ronald N Zuckermann
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Nevena Todorova
- School of Engineering, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Oleg Gang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Brookhaven Avenue, Upton, New York 11973, United States.,Department of Chemical Engineering, Columbia University, New York, New York 10027, United States.,Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States
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6
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Affiliation(s)
- Jason S. Kahn
- Department of Chemical Engineering Columbia University New York NY 10027 USA
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
| | - Oleg Gang
- Department of Chemical Engineering Columbia University New York NY 10027 USA
- Department of Applied Physics and Applied Mathematics Columbia University New York NY 10027 USA
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
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7
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Kim HJ, Wang W, Zhang H, Freychet G, Ocko BM, Travesset A, Mallapragada SK, Vaknin D. Effect of Polymer Chain Length on the Superlattice Assembly of Functionalized Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10143-10149. [PMID: 34370486 DOI: 10.1021/acs.langmuir.1c01547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We report on the assembly of gold nanoparticle (AuNPs) superlattices at the liquid/vapor interface and in the bulk of their suspensions. Interparticle distances in the assemblies are achieved on multiple length scales by varying chain lengths of surface grafted AuNPs by polyethylene glycol (PEG) with molecular weights in the range 2000-40,000 Da. Crystal structures and lattice constants in both 2D and 3D assemblies are determined by synchrotron-based surface-sensitive and small-angle X-ray scattering. Assuming knowledge of grafting density, we show that experimentally determined interparticle distances are adequately modeled by spherical brushes close to the θ point (Flory-Huggins parameter, χ≈12) for 2D superlattices at a liquid interface and a nonsolvent (χ = ∞) for the 3D dry superlattices.
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Affiliation(s)
- Hyeong Jin Kim
- Ames Laboratory, and Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Wenjie Wang
- Division of Materials Sciences and Engineering, Ames Laboratory, U.S. DOE, Ames, Iowa 50011, United States
| | - Honghu Zhang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Guillaume Freychet
- NSLS-II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Benjamin M Ocko
- NSLS-II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Alex Travesset
- Ames Laboratory, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
| | - Surya K Mallapragada
- Ames Laboratory, and Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - David Vaknin
- Ames Laboratory, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, United States
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8
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Lu S, Shen J, Fan C, Li Q, Yang X. DNA Assembly-Based Stimuli-Responsive Systems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100328. [PMID: 34258165 PMCID: PMC8261508 DOI: 10.1002/advs.202100328] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/05/2021] [Indexed: 05/06/2023]
Abstract
Stimuli-responsive designs with exogenous stimuli enable remote and reversible control of DNA nanostructures, which break many limitations of static nanostructures and inspired development of dynamic DNA nanotechnology. Moreover, the introduction of various types of organic molecules, polymers, chemical bonds, and chemical reactions with stimuli-responsive properties development has greatly expand the application scope of dynamic DNA nanotechnology. Here, DNA assembly-based stimuli-responsive systems are reviewed, with the focus on response units and mechanisms that depend on different exogenous stimuli (DNA strand, pH, light, temperature, electricity, metal ions, etc.), and their applications in fields of nanofabrication (DNA architectures, hybrid architectures, nanomachines, and constitutional dynamic networks) and biomedical research (biosensing, bioimaging, therapeutics, and theranostics) are discussed. Finally, the opportunities and challenges for DNA assembly-based stimuli-responsive systems are overviewed and discussed.
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Affiliation(s)
- Shasha Lu
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
| | - Jianlei Shen
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
| | - Chunhai Fan
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
- Institute of Molecular MedicineShanghai Key Laboratory for Nucleic Acid Chemistry and NanomedicineDepartment of UrologyRenji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China
| | - Qian Li
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
| | - Xiurong Yang
- School of Chemistry and Chemical EngineeringFrontiers Science Center for Transformative MoleculesInstitute of Translational MedicineShanghai Jiao Tong UniversityShanghai200240China
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9
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Kahn JS, Gang O. Designer Nanomaterials through Programmable Assembly. Angew Chem Int Ed Engl 2021; 61:e202105678. [PMID: 34128306 DOI: 10.1002/anie.202105678] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Indexed: 11/08/2022]
Abstract
Nanoparticles have long been recognized for their unique properties, leading to exciting potential applications across optics, electronics, magnetism, and catalysis. These specific functions often require a designed organization of particles, which includes the type of order as well as placement and relative orientation of particles of the same or different kinds. DNA nanotechnology offers the ability to introduce highly addressable bonds, tailor particle interactions, and control the geometry of bindings motifs. Here, we discuss how developments in structural DNA nanotechnology have enabled greater control over 1D, 2D, and 3D particle organizations through programmable assembly. This Review focuses on how the use of DNA binding between nanocomponents and DNA structural motifs has progressively allowed the rational formation of prescribed particle organizations. We offer insight into how DNA-based motifs and elements can be further developed to control particle organizations and how particles and DNA can be integrated into nanoscale building blocks, so-called "material voxels", to realize designer nanomaterials with desired functions.
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Affiliation(s)
- Jason S Kahn
- Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA.,Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Oleg Gang
- Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA.,Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, 10027, USA.,Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
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10
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Sato M. Effect of the Interaction Length on Clusters Formed by Spherical One-Patch Particles on Flat Planes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:4213-4221. [PMID: 33780624 DOI: 10.1021/acs.langmuir.1c00102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Considering that one-patch particles rotate three-dimensionally and translate on a two-dimensional flat plane, I performed isothermal-isochoric Monte Carlo simulations to study how two-dimensional self-assemblies formed by spherical patchy particles depending on the interaction length and patch area. As the interaction potential between one-patch particles, the Kern-Frenkel (KF) potential is used in the simulations. With increasing patch area, the shape of the most numerous clusters changes from dimers to island-like clusters with a square lattice via triangular trimers, square tetramers, and chain-like clusters when the interaction length is as long as the particle radius. With a longer interaction length, other shapes of polygonal clusters such as another type of square tetramers, two types of pentagonal pentamers, hexagonal hexamers, and hexagonal heptamers also form.
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Affiliation(s)
- Masahide Sato
- Information Media Center, Kanazawa University, Kanazawa 920-1192, Japan
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11
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Li X, Liu X, Liu X. Self-assembly of colloidal inorganic nanocrystals: nanoscale forces, emergent properties and applications. Chem Soc Rev 2021; 50:2074-2101. [PMID: 33325927 DOI: 10.1039/d0cs00436g] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The self-assembly of colloidal nanoparticles has made it possible to bridge the nanoscopic and macroscopic worlds and to make complex nanostructures. The nanoparticle-mediated assembly enables many potential applications, from biodetection and nanomedicine to optoelectronic devices. Properties of assembled materials are determined not only by the nature of nanoparticle building blocks, but also by spatial positions of nanoparticles within the assemblies. A deep understanding of nanoscale interactions between nanoparticles is a prerequisite to controlling nanoparticle arrangement during assembly. In this review, we present an overview of interparticle interactions governing their assembly in a liquid phase. Considerable attention is devoted to examples that illustrate nanoparticle assembly into ordered superstructures using different types of building blocks, including plasmonic nanoparticles, magnetic nanoparticles, lanthanide-doped nanophosphors, and quantum dots. We also cover the physicochemical properties of nanoparticle ensembles, especially those arising from particle coupling effects. We further discuss future research directions and challenges in controlling self-assembly at a level of precision that is most crucial to technology development.
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Affiliation(s)
- Xiyan Li
- Institute of Photoelectronic Thin Film Devices and Technology, Nankai University, Tianjin 300071, China.
| | - Xiaowang Liu
- Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Shaanxi Institute of Flexible Electronics (SIFE), 8. Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China.
| | - Xiaogang Liu
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, 117543, Singapore. and Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University, Fuzhou 350207, China and The N.1 Institute for Health, National University of Singapore, 117456, Singapore
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12
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Sato M. Effect of Patch Area and Interaction Length on Clusters and Structures Formed by One-Patch Particles in Thin Systems. ACS OMEGA 2020; 5:28812-28822. [PMID: 33195934 PMCID: PMC7659161 DOI: 10.1021/acsomega.0c04159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/21/2020] [Indexed: 06/11/2023]
Abstract
Assuming that the interaction between particles is given by the Kern-Frenkel potential, Monte Carlo simulations are performed to study the clusters and structures formed by one-patch particles in a thin space between two parallel walls. In isothermal-isochoric systems with a short interaction length, tetrahedral tetramers, octahedral hexamers, and pentagonal dipyramidal heptamers are created with increasing patch area. In isothermal-isobaric systems, the double layers of a triangular lattice, which is the (111) face of the face-centered cubic (fcc) lattice, form when the pressure is high. For a long interaction length, a different type of cluster, trigonal prismatic hexamers, is created. The structures in the double layers also changed as follows: a simple hexagonal lattice or square lattice, which is the (100) face of the fcc structure, is created in isothermal-isobaric systems.
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13
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Dedeo CL, Teschke CM, Alexandrescu AT. Keeping It Together: Structures, Functions, and Applications of Viral Decoration Proteins. Viruses 2020; 12:v12101163. [PMID: 33066635 PMCID: PMC7602432 DOI: 10.3390/v12101163] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/09/2020] [Accepted: 10/11/2020] [Indexed: 12/14/2022] Open
Abstract
Decoration proteins are viral accessory gene products that adorn the surfaces of some phages and viral capsids, particularly tailed dsDNA phages. These proteins often play a "cementing" role, reinforcing capsids against accumulating internal pressure due to genome packaging, or environmental insults such as extremes of temperature or pH. Many decoration proteins serve alternative functions, including target cell recognition, participation in viral assembly, capsid size determination, or modulation of host gene expression. Examples that currently have structures characterized to high-resolution fall into five main folding motifs: β-tulip, β-tadpole, OB-fold, Ig-like, and a rare knotted α-helical fold. Most of these folding motifs have structure homologs in virus and target cell proteins, suggesting horizontal gene transfer was important in their evolution. Oligomerization states of decoration proteins range from monomers to trimers, with the latter most typical. Decoration proteins bind to a variety of loci on capsids that include icosahedral 2-, 3-, and 5-fold symmetry axes, as well as pseudo-symmetry sites. These binding sites often correspond to "weak points" on the capsid lattice. Because of their unique abilities to bind virus surfaces noncovalently, decoration proteins are increasingly exploited for technology, with uses including phage display, viral functionalization, vaccination, and improved nanoparticle design for imaging and drug delivery. These applications will undoubtedly benefit from further advances in our understanding of these versatile augmenters of viral functions.
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14
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Mostarac D, Sánchez PA, Kantorovich S. Characterisation of the magnetic response of nanoscale magnetic filaments in applied fields. NANOSCALE 2020; 12:13933-13947. [PMID: 32406897 DOI: 10.1039/d0nr01646b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Incorporating magnetic nanoparticles (MNPs) within permanently crosslinked polymer-like structures opens up the possibility for synthesis of complex, highly magneto-responsive systems. Among such structures are chains of prealigned magnetic (ferro- or super-paramagnetic) monomers, permanently crosslinked by means of macromolecules, which we refer to as magnetic filaments (MFs). In this paper, using molecular dynamics simulations, we encompass filament synthesis scenarios, with a compact set of easily tuneable computational models, where we consider two distinct crosslinking approaches, for both ferromagnetic and super-paramagnetic monomers. We characterise the equilibrium structure, correlations and magnetic properties of MFs in static magnetic fields. Calculations show that MFs with ferromagnetic MNPs in crosslinking scenarios where the dipole moment orientations are decoupled from the filament backbone, have similar properties to MFs with super-paramagnetic monomers. At the same time, magnetic properties of MFs with ferromagnetic MNPs are more dependent on the crosslinking approach than they are for ones with super-paramagnetic monomers. Our results show that, in a strong applied field, MFs with super-paramagnetic MNPs have similar magnetic properties to ferromagnetic ones, while exhibiting higher susceptibility in low fields. We find that MFs with super-paramagnetic MNPs have a tendency to bend the backbone locally rather than to fully stretch along the field. We explain this behaviour by supplementing Flory theory with an explicit dipole-dipole interaction potential, with which we can take in to account folded filament configurations. It turns out that the entropy gain obtained through bending compensates an insignificant loss in dipolar energy for the filament lengths considered in the manuscript.
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Affiliation(s)
| | - Pedro A Sánchez
- Ural Federal University, Ekaterinburg, Russia and Wolfgang Pauli Institute, Vienna, Austria
| | - Sofia Kantorovich
- University of Vienna, Vienna, Austria. and Ural Federal University, Ekaterinburg, Russia
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15
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Qu H, Hao C, Yin Z, Liu H, Zhang Z, Sun R. Studied on the interaction between Ag-DNA nanocomposites and lipids monolayers. ADSORPTION 2020. [DOI: 10.1007/s10450-020-00242-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Yang TY, Yu L, Akiyama Y, Takarada T, Maeda M. DNA-Programmed Bimodal 2D Assembly of Differently Sized Nanoparticles via Folding of Precursory Circular Chains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5588-5595. [PMID: 32378903 DOI: 10.1021/acs.langmuir.0c00765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Gold nanoparticle (AuNP) assemblies in two-dimensions (2D) exhibit collective physical/chemical properties that are useful for various devices. However, technical issues still impede the efficient ordering of differently sized AuNPs on solid supports while avoiding phase separation. This paper describes a method to construct binary 2D assemblies by folding precursory circular chains composed of small and large AuNPs. The structural change is caused by a spontaneous, non-cross-linking assembly of fully matched double-stranded DNA-modified AuNPs (dsDNA-AuNPs) at a high ionic strength. Since larger dsDNA-AuNPs have a lower critical coagulation concentration of the supporting electrolyte, the spontaneous assembly of large AuNPs precedes that of small AuNPs in the precursory chain during evaporation. Transmission electron microscopy reveals that alternate-type AuNP chains are folded into a binary 2D structure in a mixed mode, whereas block-type chains are transformed into a binary 2D structure in a core-shell mode. The methodology could potentially be harnessed for the fabrication of binary AuNP arrays for various devices.
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Affiliation(s)
- Tzung-Ying Yang
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8561, Japan
- Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama351-0198, Japan
| | - Li Yu
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8561, Japan
- Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama351-0198, Japan
| | - Yoshitsugu Akiyama
- Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama351-0198, Japan
- Faculty of Industrial Science and Technology, Tokyo University of Science, 102-1 Tomino, Oshamambe-cho, Yamakoshi-gun, Hokkaido 049-3514, Japan
| | - Tohru Takarada
- Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama351-0198, Japan
| | - Mizuo Maeda
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8561, Japan
- Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama351-0198, Japan
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17
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Das T, Bandi MM. Steady state dynamic dependence between local mobility and non-affine fluctuations in two-dimensional aggregates. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:214004. [PMID: 31968328 DOI: 10.1088/1361-648x/ab6e94] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Motivated by qualitative experimental observations in collective behavior of self-propelled camphor particles at air-water interfaces, we study a generic aggregate forming system in two dimensions using canonical ensemble constant temperature molecular dynamics simulation. The aggregates form due to the competition between short-range attraction and long-range repulsion of pair-wise interactions as a generic proxy for the specific case of short-range capillary attraction competing with long-range Marangoni-assisted repulsion in camphor boat systems. Choosing the appropriate set of interaction parameters, we focus on characterising the local dynamics in two specific limiting morphologies, viz. compact and string-like aggregates. We focus on the temporal evolution of the mobility of an individual particle and the dynamic change in its nearest neighbourhood, measured in terms of the Debye-Waller factor ([Formula: see text]) and the non-affine parameter ([Formula: see text]), respectively (both defined in the text), and their interrelation over several lengths of observation time [Formula: see text]. The distribution for both measures are found to follow the relation: [Formula: see text] for the measured quantity x. The exponent [Formula: see text] is equal to two and one respectively, for the compact and string-like morphologies following the respective ideal fractal dimension of these aggregates. A functional dependence between these two observables is determined from a detailed statistical analysis of their joint and conditional distributions. The results obtained can readily be used and verified by experiments on aggregate forming systems more generic than the specific camphor boat system that motivated us, such as globular proteins, nanoparticle self-assembly etc. Further, the insights gained from this study might be useful to understand the evolution of collective dynamics in diverse glass-forming systems.
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Affiliation(s)
- Tamoghna Das
- Center for Soft and Living Matter, Institute for Basic Sciences, Ulju-gun, Ulsan 44911, Republic of Korea
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18
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The impact of magnetic field on the conformations of supracolloidal polymer-like structures with super-paramagnetic monomers. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Vialetto J, Rudiuk S, Morel M, Baigl D. From bulk crystallization of inorganic nanoparticles at the air/water interface: tunable organization and intense structural colors. NANOSCALE 2020; 12:6279-6284. [PMID: 32037425 DOI: 10.1039/c9nr10965j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The "flipping method" is a new straightforward way to both adsorb and organize microparticles at a liquid interface, with ultralow amounts of a surfactant and no other external forces than gravity. Here we demonstrate that it allows the adsorption of a variety of inorganic nanoparticles at an air/water interface, in an organized way, which is directly controlled by the surfactant concentration, ranging from amorphous to highly crystalline two-dimensional assemblies. With micromolar amounts of a conventional cationic surfactant (dodecyltrimethylammonium bromide, DTAB), nanoparticles of different compositions (silica, silver, and gold), sizes (down to 100 nm) and shapes (spheres and cubes) adsorb from the bulk and directly organize at the air/water interface, resulting in marked optical properties such as reflectivity or intense structural coloration.
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Affiliation(s)
- Jacopo Vialetto
- PASTEUR, Department of Chemistry, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Sergii Rudiuk
- PASTEUR, Department of Chemistry, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Mathieu Morel
- PASTEUR, Department of Chemistry, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Damien Baigl
- PASTEUR, Department of Chemistry, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
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20
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Mundoor H, Cruz-Colón EM, Park S, Liu Q, Smalyukh II, van de Lagemaat J. Control of quantum dot emission by colloidal plasmonic pyramids in a liquid crystal. OPTICS EXPRESS 2020; 28:5459-5469. [PMID: 32121766 DOI: 10.1364/oe.383672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 01/25/2020] [Indexed: 06/10/2023]
Abstract
We study the plasmon-enhanced fluorescence of a single semiconducting quantum dot near the apex of a colloidal gold pyramid spatially localized by the elastic forces of the liquid crystal host. The gold pyramid particles were manipulated within the liquid crystal medium by laser tweezers, enabling the self-assembly of a semiconducting quantum dot dispersed in the medium near the apex of the gold pyramid, allowing us to probe the plasmon-exciton interactions. We demonstrate the effect of plasmon coupling on the fluorescence lifetime and the blinking properties of the quantum dot. Our results demonstrate that topological defects around colloidal particles in liquid crystal combined with laser tweezers provide a platform for plasmon exciton interaction studies and potentially could be extended to the scale of composite materials for nanophotonic applications.
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21
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Wang W, Kim HJ, Bu W, Mallapragada S, Vaknin D. Unusual Effect of Iodine Ions on the Self-Assembly of Poly(ethylene glycol)-Capped Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:311-317. [PMID: 31838851 DOI: 10.1021/acs.langmuir.9b02966] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We use synchrotron X-ray reflectivity and grazing incidence small-angle X-ray scattering to investigate the surface assembly of the poly(ethylene glycol) (PEG)-grafted gold nanoparticles (PEG-AuNPs) induced by different salts. We find that NaCl and CsCl behave as many other electrolytes, namely, drive the PEG-AuNPs to the vapor/suspension interface to form a layer of single-particle depth and organize them into very high-quality two-dimensional (2D) hexagonal crystals. By contrast, NaI induces the migration of PEG-AuNPs to the aqueous surface at much higher surface densities than the other salts (at similar concentrations). The resulting 2D ordering at moderate NaI concentrations is very short ranged, and at a higher NaI concentration, the high-density monolayer is amorphous. Considering NaCl, CsCl and the majority of salts behave similarly, this implicates the anomaly of iodine ion (I-) in this unusual surface population. We argue that the influence of most electrolytes on the PEG corona preserves the polymer in the θ-point with sufficient flexibility to settle into a highly ordered state, whereas I- has a much more severe effect on the corona by collapsing it. The collapsed PEG renders the grafted AuNP a nonspherical shaped complex that, although packs at high density, cannot organize into a 2D ordered arrangement.
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Affiliation(s)
- Wenjie Wang
- Division of Materials Sciences and Engineering , Ames Laboratory, U.S. DOE , Ames , Iowa 50011 , United States
| | | | - Wei Bu
- NSF's ChemMatCARS , University of Chicago , Chicago , Illinois 60637 , United States
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22
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Dong D, Fu R, Shi Q, Cheng W. Self-assembly and characterization of 2D plasmene nanosheets. Nat Protoc 2019; 14:2691-2706. [PMID: 31420600 DOI: 10.1038/s41596-019-0200-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 05/20/2019] [Indexed: 02/06/2023]
Abstract
Freestanding plasmonic nanoparticle (NP) superlattice sheets are novel 2D nanomaterials with tailorable properties that enable their use for broad applications in sensing, anticounterfeit measures, ionic gating, nanophotonics and flat lenses. We recently developed a robust, yet general, two-step drying-mediated approach to produce freestanding monolayer, plasmonic NP superlattice sheets, which are typically held together by holey grids with minimal solid support. Within these superlattices, NP building blocks are closely packed and have strong plasmonic coupling interactions; hence, we termed such freestanding materials 'plasmene nanosheets'. Using the desired NP building blocks as starting material, we describe the detailed fabrication protocol, including NP surface functionalization by thiolated polystyrene and the self-assembly of NPs at the air-water interface. We also discuss various characterization approaches for checking the quality and optical properties of the as-obtained plasmene nanosheets: optical microscopy, spectrophotometry, transmission/scanning electron microscopy (TEM/SEM) and atomic force microscopy (AFM). With regard to different constituent building blocks, the key experimental parameters, including NP concentration and volume, are summarized to guide the successful fabrication of specific types of plasmene nanosheets. This protocol, from initial NP synthesis to the final fabrication and characterization, takes ~33.5 h.
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Affiliation(s)
- Dashen Dong
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, Victoria, Australia.,The Melbourne Centre for Nanofabrication, Clayton, Victoria, Australia.,Functional Materials and Microsystems Research Group and Micro Nano Research Facility, RMIT University, Melbourne, Victoria, Australia
| | - Runfang Fu
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, Victoria, Australia.,The Melbourne Centre for Nanofabrication, Clayton, Victoria, Australia
| | - Qianqian Shi
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, Victoria, Australia.,The Melbourne Centre for Nanofabrication, Clayton, Victoria, Australia
| | - Wenlong Cheng
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, Victoria, Australia. .,The Melbourne Centre for Nanofabrication, Clayton, Victoria, Australia.
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23
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Liu Y, Siron M, Lu D, Yang J, dos Reis R, Cui F, Gao M, Lai M, Lin J, Kong Q, Lei T, Kang J, Jin J, Ciston J, Yang P. Self-Assembly of Two-Dimensional Perovskite Nanosheet Building Blocks into Ordered Ruddlesden–Popper Perovskite Phase. J Am Chem Soc 2019; 141:13028-13032. [DOI: 10.1021/jacs.9b06889] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yong Liu
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Martin Siron
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Dylan Lu
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Jingjing Yang
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Roberto dos Reis
- National Center
for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Fan Cui
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Mengyu Gao
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Minliang Lai
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Jia Lin
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Qiao Kong
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Teng Lei
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Joohoon Kang
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Center for NanoMedicine, Institute for Basic Science (IBS), Seoul 03722, Korea
- Y-IBS Institute, Yonsei University, Seoul 03722, Korea
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
| | - Jianbo Jin
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Jim Ciston
- National Center
for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
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24
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Qu H, Hao C, Zhang Z, Xu Z, Sun R. Adsorption behavior of DNA on phosphatidylcholine at the air-water interface. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:505-510. [PMID: 30889725 DOI: 10.1016/j.msec.2019.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 01/21/2019] [Accepted: 02/01/2019] [Indexed: 12/11/2022]
Abstract
In this paper, the adsorption behavior of DNA on 1,2-dipalmitoyl-sn-glycero-3- phosphocholine (DPPC) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) mixed lipid monolayers had been studied at the air-water interface through the surface pressure-area curves (π-A), adsorption curves (π/π0-t), excess mean area (∆Aexc), excess Gibbs free energy (∆Gex) and the atomic force microscopy (AFM). π-A isotherms showed that the curves moved to larger mean molecular area after DNA added into subphase, however, the curves shifted to smaller mean molecular area when the concentration of DNA was higher than 1.2 μg/mL. The result of adsorption curves indicated that DNA molecules were spread by combining with polar head groups of lipids except the concentration of DNA was 0.4 μg/mL. ∆Aexc and ∆Gex demonstrated that DNA enlarged the interval between DPPC and POPC, and the strongest position happened at the concentration of DNA was 1.2 μg/mL. These phenomena might be the steric hindrance between DNA molecules. Morphology of surface observed by AFM was agreement with the results above, which verified our conclusion from a more intuitive aspect. This work provides useful theoretical basis for the development of novel DNA delivery materials.
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Affiliation(s)
- Hongjin Qu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Changchun Hao
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China.
| | - Ziyi Zhang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Zhuangwei Xu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
| | - Runguang Sun
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
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25
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Nayak S, Fieg M, Wang W, Bu W, Mallapragada S, Vaknin D. Effect of (Poly)electrolytes on the Interfacial Assembly of Poly(ethylene glycol)-Functionalized Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:2251-2260. [PMID: 30628793 DOI: 10.1021/acs.langmuir.8b03535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We report on the effect of interpolymer complexes (IPCs) of poly(acrylic acid) (PAA) with poly(ethylene glycol)-functionalized Au nanoparticles (PEG-AuNPs) as they assemble at the vapor-liquid interface, using surface-sensitive synchrotron X-ray scattering techniques. Depending on the suspension pH, PAA functions both as a weak polyelectrolyte and a hydrogen bond donor, and these two roles affect the interfacial assembly of PEG-AuNPs differently. Above its isoelectric point, we find that PAA leads to the formation of a PEG-AuNP monolayer at the interface with a hexagonal structure. In the presence of high concentration of HCl (i.e., below the isoelectric point), at which PAA forms IPCs with PEG, the hexagonal structure at the interface appears to deteriorate, concurrent with aggregation in the bulk. Thus, while the electrolytic behavior of PAA induces interfacial assembly, the hydrogen bonding behavior, as PAA becomes neutral, favors the formation of 3D assemblies. For comparison, we also report on the formation of PEG-AuNP monolayers (in the absence of PAA) with strong electrolytes such as HCl, H2SO4, and NaOH that lead to a high degree of crystallinity.
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Affiliation(s)
| | | | - Wenjie Wang
- Division of Materials Sciences and Engineering, Ames Laboratory , USDOE , Ames , Iowa 50011 , United States
| | - Wei Bu
- NSF's ChemMatCARS , University of Chicago , Chicago , Illinois 60637 , United States
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26
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Xu HN, Li YH, Zhang L. Driving Forces for Accumulation of Cellulose Nanofibrils at the Oil/Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10757-10763. [PMID: 30111114 DOI: 10.1021/acs.langmuir.8b02310] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Understanding the adsorption and organization of nanocelluloses at oil/water interfaces is crucial to develop a promising route to fabricate functional materials from the bottom-up. Here, we prepare acetylated cellulose nanofibrils (CNFs) with 2 degrees of substitution and investigate their assembly behavior at the oil/water interface. We study the adsorption process by tracking the dynamic interfacial tension using pendant drop tensiometry and further characterize the viscoelasticity of the CNF interfacial films as a function of ionic strength. The results show that the adsorption of the CNFs at the interface is dominated by energy barriers associated with electrostatic repulsion. With the addition of NaCl, the fibrils are rapidly accumulated at the oil/water interface and jammed into a solidlike film. The overall accumulation of the fibrils is related to the competition between van der Waals attractive forces and electrostatic repulsive forces according to the Derjaguin-Landau-Verwey-Overbeek theory. By screening on the fibril-fibril and fibril-interface electrostatic repulsive forces, the salt addition facilitates the formation of packed fibril clusters and the development of the clusters into a solidlike film. Moreover, the salt addition is assumed to trigger an abrupt density fluctuation in the vicinity of the interface (the formation of locally dense clusters and voids), leading to an increase in brittleness of the film.
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27
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Wang W, Lawrence JJ, Bu W, Zhang H, Vaknin D. Two-Dimensional Crystallization of Poly( N-isopropylacrylamide)-Capped Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8374-8378. [PMID: 29947524 DOI: 10.1021/acs.langmuir.8b01042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surface-sensitive X-ray reflectivity and grazing incidence small-angle X-ray scattering reveal the structure of polymer-capped-gold nanoparticles (AuNPs that are grafted with poly( N-isopropylacrylamide); PNIPAM-AuNPs) as they self-assemble and crystallize at the aqueous suspension/vapor interface. Citrate-stabilized AuNPs (5 and 10 nm in nominal diameter) are ligand-exchanged by 6 kDa PNIPAM-thiol to form corona brushes around the AuNPs that are highly stable and dispersed in aqueous suspensions. Surprisingly, no clear evidence of thermosensitive effect on surface enrichment or self-assembly of the PNIPAM-AuNPs is observed in the 10-35 °C temperature range. However, addition of simple salts (in this case, NaCl) to the suspension induces migration of the PNIPAM-AuNPs to the aqueous surface, and above a threshold salt concentration, two-dimensional crystals are formed. The 10 nm PNIPAM-AuNPs form a highly ordered single layer with in-plane triangular structure, whereas the 5 nm capped NPs form short-range triangular structure that gradually becomes denser as salt concentration increases.
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Affiliation(s)
- Wenjie Wang
- Division of Materials Sciences and Engineering , Ames Laboratory, USDOE , Ames , Iowa 50011 , United States
| | - Jack J Lawrence
- Division of Materials Sciences and Engineering , Ames Laboratory, USDOE , Ames , Iowa 50011 , United States
| | - Wei Bu
- NSF's ChemMatCARS , University of Chicago , Chicago , Illinois 60637 , United States
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28
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Srivastava S, Fukuto M, Gang O. Liquid interfaces with pH-switchable nanoparticle arrays. SOFT MATTER 2018; 14:3929-3934. [PMID: 29736540 DOI: 10.1039/c8sm00583d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Stimuli-responsive 2D nanoscale systems offer intriguing opportunities for creating switchable interfaces. At liquid interfaces, such systems can provide control over interfacial energies, surface structure, and rheological and transport characteristics, which is relevant, for example, to bio- and chemical reactors, microfluidic devices, and soft robotics. Here, we explore the formation of a pH-responsive membrane formed from gold nanoparticles grafted with DNA (DNA-NPs) at a liquid-vapor interface. A DNA-NP 2D hexagonal lattice can be reversibly switched by pH modulation between an expanded state of non-connected nanoparticles at neutral pH and a contracted state of linked nanoparticles at acidic pH due to the AH+-H+A base pairing between A-motifs. Our in situ surface X-ray scattering studies reveal that the reversible lattice contraction can be tuned by the length of pH-activated linkers, with up to ∼71% change in surface area.
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Affiliation(s)
- Sunita Srivastava
- Department of Physics, Indian Institute of Technology Bombay, Mumbai, 400076, India
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29
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Zhang H, Nayak S, Wang W, Mallapragada S, Vaknin D. Interfacial Self-Assembly of Polyelectrolyte-Capped Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12227-12234. [PMID: 28985464 DOI: 10.1021/acs.langmuir.7b02359] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report on pH- and salt-responsive assembly of nanoparticles capped with polyelectrolytes at vapor-liquid interfaces. Two types of alkylthiol-terminated poly(acrylic acid) (PAAs, varying in length) are synthesized and used to functionalize gold nanoparticles (AuNPs) to mimic similar assembly effects of single-stranded DNA-capped AuNPs using synthetic polyelectrolytes. Using surface-sensitive X-ray scattering techniques, including grazing incidence small-angle X-ray scattering (GISAXS) and X-ray reflectivity (XRR), we demonstrate that PAA-AuNPs spontaneously migrate to the vapor-liquid interfaces and form Gibbs monolayers by decreasing the pH of the suspension. The Gibbs monoalyers show chainlike structures of monoparticle thickness. The pH-induced self-assembly is attributed to the protonation of carboxyl groups and to hydrogen bonding between the neighboring PAA-AuNPs. In addition, we show that adding MgCl2 to PAA-AuNP suspensions also induces adsorption at the interface and that the high affinity between magnesium ions and carboxyl groups leads to two- and three-dimensional clusters that yield partial surface coverage and poorer ordering of NPs at the interface. We also examine the assembly of PAA-AuNPs in the presence of a positively charged Langmuir monolayer that promotes the attraction of the negatively charged capped NPs by electrostatic forces. Our results show that synthetic polyelectrolyte-functionalized nanoparticles exhibit interfacial self-assembly behavior similar to that of DNA-functionalized nanoparticles, providing a pathway for nanoparticle assembly in general.
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Affiliation(s)
- Honghu Zhang
- Ames Laboratory and Department of Materials Science and Engineering, Iowa State University , Ames, Iowa 50011, United States
| | - Srikanth Nayak
- Ames Laboratory and Department of Chemical and Biological Engineering, Iowa State University , Ames, Iowa 50011, United States
| | - Wenjie Wang
- Division of Materials Sciences and Engineering, Ames Laboratory, U.S. Department of Energy , Ames, Iowa 50011, United States
| | - Surya Mallapragada
- Ames Laboratory and Department of Chemical and Biological Engineering, Iowa State University , Ames, Iowa 50011, United States
| | - David Vaknin
- Ames Laboratory and Department of Physics and Astronomy, Iowa State University , Ames, Iowa 50011, United States
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30
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Rozhkov DA, Pyanzina ES, Novak EV, Cerdà JJ, Sintes T, Ronti M, Sánchez PA, Kantorovich SS. Self-assembly of polymer-like structures of magnetic colloids: Langevin dynamics study of basic topologies. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1378815] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- D. A. Rozhkov
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russia
- Computational Physics, University of Vienna, Vienna, Austria
| | - E. S. Pyanzina
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russia
| | - E. V. Novak
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russia
| | - J. J. Cerdà
- Physics Department, University of the Balearic Islands, Palma de Mallorca, Spain
| | - T. Sintes
- Physics Department, University of the Balearic Islands, Palma de Mallorca, Spain
| | - M. Ronti
- Computational Physics, University of Vienna, Vienna, Austria
| | - P. A. Sánchez
- Computational Physics, University of Vienna, Vienna, Austria
| | - S. S. Kantorovich
- Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russia
- Computational Physics, University of Vienna, Vienna, Austria
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31
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Dias CS, Araújo NAM, Telo da Gama MM. Dynamics of network fluids. Adv Colloid Interface Sci 2017; 247:258-263. [PMID: 28802478 DOI: 10.1016/j.cis.2017.07.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 05/16/2017] [Accepted: 07/02/2017] [Indexed: 11/20/2022]
Abstract
Network fluids are structured fluids consisting of chains and branches. They are characterized by unusual physical properties, such as, exotic bulk phase diagrams, interfacial roughening and wetting transitions, and equilibrium and nonequilibrium gels. Here, we provide an overview of a selection of their equilibrium and dynamical properties. Recent research efforts towards bridging equilibrium and non-equilibrium studies are discussed, as well as several open questions.
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Affiliation(s)
- C S Dias
- Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; Centro de Física Teórica e Computacional, Universidade de Lisboa, Lisboa 1749-016, Portugal.
| | - N A M Araújo
- Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; Centro de Física Teórica e Computacional, Universidade de Lisboa, Lisboa 1749-016, Portugal
| | - M M Telo da Gama
- Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; Centro de Física Teórica e Computacional, Universidade de Lisboa, Lisboa 1749-016, Portugal
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32
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Zhang H, Wang W, Akinc M, Mallapragada S, Travesset A, Vaknin D. Assembling and ordering polymer-grafted nanoparticles in three dimensions. NANOSCALE 2017; 9:8710-8715. [PMID: 28616945 DOI: 10.1039/c7nr00787f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Taking advantage of the aqueous biphasic behavior of polyethylene glycol (PEG)/salts, recent experiments have demonstrated self-assembly and crystallization of PEG-grafted gold nanoparticles (PEG-AuNPs) into tunable two-dimensional (2D) supercrystals by adjusting salt concentration (for instance, K2CO3). In those studies, combined experimental evidence and theoretical analysis have pointed out the possibility that similar strategies can lead to three-dimensional (3D) formation of ordered nanoparticle precipitates. Indeed, a detailed small-angle X-ray scattering (SAXS) study reported herein reveals the spontaneous formation of PEG-AuNPs assemblies in high-concentration salt solutions that exhibit short-range 3D order compatible with fcc symmetry. We argue that the assembly into fcc crystals is driven by partnering nearest-neighbors to minimize an effective surface-tension gradient at the boundary between the polymer shell and the high-salt media. We report SAXS and other results on PEG-AuNPs of various Au core diameters in the range of 10 to 50 nm and analyze them in the framework of brush-polymer theory revealing a systematic prediction of the nearest-neighbor distance in the 3D assemblies.
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Affiliation(s)
- Honghu Zhang
- Ames Laboratory and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA
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33
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Sun L, Lin H, Park DJ, Bourgeois MR, Ross MB, Ku JC, Schatz GC, Mirkin CA. Polarization-Dependent Optical Response in Anisotropic Nanoparticle-DNA Superlattices. NANO LETTERS 2017; 17:2313-2318. [PMID: 28358518 DOI: 10.1021/acs.nanolett.6b05101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
DNA-programmable assembly has been used to prepare superlattices composed of octahedral and spherical nanoparticles, respectively. These superlattices have the same body-centered cubic lattice symmetry and macroscopic rhombic dodecahedron crystal habit but tunable lattice parameters by virtue of the DNA length, allowing one to study and determine the effect of nanoscale structure and lattice parameter on the light-matter interactions in the superlattices. Backscattering measurements and finite-difference time-domain simulations have been used to characterize these two classes of superlattices. Superlattices composed of octahedral nanoparticles exhibit polarization-dependent backscattering but via a trend that is opposite to that observed in the polarization dependence for analogous superlattices composed of spherical nanoparticles. Electrodynamics simulations show that this polarization dependence is mainly due to the anisotropy of the nanoparticles and is observed only if the octahedral nanoparticles are well-aligned within the superlattices. Both plasmonic and photonic modes are identified in such structures, both of which can be tuned by controlling the size and shape of the nanoparticle building blocks, the lattice parameters, and the overall size of the three-dimensional superlattices (without changing habit).
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Affiliation(s)
- Lin Sun
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
| | - Haixin Lin
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
| | - Daniel J Park
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
| | - Marc R Bourgeois
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
| | - Michael B Ross
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
| | - Jessie C Ku
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
| | - George C Schatz
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
| | - Chad A Mirkin
- Department of Materials Science and Engineering, ‡International Institute for Nanotechnology, and §Department of Chemistry, Northwestern University , Evanston, Illinois 60208 United States
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34
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Pyanzina ES, Sánchez PA, Cerdà JJ, Sintes T, Kantorovich SS. Scattering properties and internal structure of magnetic filament brushes. SOFT MATTER 2017; 13:2590-2602. [PMID: 28327731 PMCID: PMC5436091 DOI: 10.1039/c6sm02606k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 03/12/2017] [Indexed: 06/06/2023]
Abstract
Practical applications of polymer brush-like systems rely on a clear understanding of their internal structure. In the case of magnetic nanoparticle filament brushes, the competition between bonding and nonbonding interactions-including long range magnetic dipole-dipole interactions-makes the microstructure of these polymer brush-like systems rather complex. On the other hand, the same interactions open up the possibility to manipulate the meso- and macroscopic responses of these systems by applying external magnetic fields or by changing the background temperature. In this study, we put forward an approach to extract information about the internal structure of a magnetic filament brush from scattering experiments. Our method is based on the mapping of the scattering profiles to the information about the internal equilibrium configurations of the brushes obtained from computer simulations. We show that the structure of the magnetic filament brush is strongly anisotropic in the direction perpendicular to the grafting surface, especially at low temperatures and external fields. This makes slice-by-slice scattering measurements a technique very useful for the study of such systems.
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Affiliation(s)
- Elena S Pyanzina
- Ural Federal University, Lenin av. 51, 620000 Ekaterinburg, Russia.
| | | | - Joan J Cerdà
- Instituto de Física Interdisciplinar y Sistemas Complejos (CSIC-UIB), E-07122 Palma de Mallorca, Spain
| | - Tomàs Sintes
- Instituto de Física Interdisciplinar y Sistemas Complejos (CSIC-UIB), E-07122 Palma de Mallorca, Spain
| | - Sofia S Kantorovich
- Ural Federal University, Lenin av. 51, 620000 Ekaterinburg, Russia. and University of Vienna, Sensengasse 8, 1090 Vienna, Austria
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35
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Maiti S, Sanyal MK, Jana MK, Runge B, Murphy BM, Biswas K, Rao CNR. Evidence of contact epitaxy in the self-assembly of HgSe nanocrystals formed at a liquid-liquid interface. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:095101. [PMID: 27991441 DOI: 10.1088/1361-648x/aa5471] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The grazing incidence x-ray scattering results presented here show that the self-assembly process of HgSe nanocrystals formed at a liquid-liquid interface is quite different along the in-plane direction and across the interface. In situ x-ray reflectivity and ex situ microscopy measurements suggest quantized out-of-plane growth for HgSe nanoparticles of a size of about [Formula: see text] nm initially. Grazing incidence small-angle x-ray scattering measurements for films transferred from the water-toluene interface at various stages of reaction show that these nanoparticles first form random clusters with an average radius of 2.2 nm, giving rise to equally spaced rings of several orders. Finally, these clusters self-organize into face-centered cubic superstructures, giving sharp x-ray diffraction peaks oriented normal to the liquid-liquid interface with more than 100 nm-coherent domains. We also observed the x-ray diffraction pattern of the HgSe crystalline phase, with the superlattice peaks in these grazing incidence measurements of the transferred films. The electron microscopy and atomic force microscopy results support the x-ray observation of the self-organization of HgSe nanocrystals into close-packed superlattices. These results show that capillary wave fluctuation promotes the oriented attachment of clusters at the liquid-liquid interface, giving direct experimental evidence of contact epitaxy.
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Affiliation(s)
- Santanu Maiti
- Surface Physics and Materials Science Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700064, India
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36
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Dallas P, Rašović I, Puchtler T, Taylor RA, Porfyrakis K. Long Stokes shifts and vibronic couplings in perfluorinated polyanilines. Chem Commun (Camb) 2017; 53:2602-2605. [PMID: 28230873 DOI: 10.1039/c7cc00471k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the effect of surfactant addition on the optical properties of perfluorinated polyanilines synthesized through liquid-liquid interfaces. We obtained very long Stokes shifts, 205 nm, for oligomers derived from a hydrofluoroether-water system in the presence of Triton X-100 as a surfactant, and vibronic fine features from a toluene-water system.
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Affiliation(s)
| | - Ilija Rašović
- Department of Materials, University of Oxford, OX1 3PH, UK.
| | - Tim Puchtler
- Clarendon Laboratory, Physics Department, University of Oxford, UK
| | - Robert A Taylor
- Clarendon Laboratory, Physics Department, University of Oxford, UK
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37
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Zhang H, Wang W, Mallapragada S, Travesset A, Vaknin D. Macroscopic and tunable nanoparticle superlattices. NANOSCALE 2017; 9:164-171. [PMID: 27791213 DOI: 10.1039/c6nr07136h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We describe a robust method to assemble nanoparticles into highly ordered superlattices by inducing aqueous phase separation of neutral capping polymers. Here we demonstrate the approach with thiolated polyethylene-glycol-functionalized gold nanoparticles (PEG-AuNPs) in the presence of salts (for example, K2CO3) in solutions that spontaneously migrate to the liquid-vapor interface to form a Gibbs monolayer. We show that by increasing salt concentration, PEG-AuNP monolayers transform from two-dimensional (2D) gas-like to liquid-like phase and eventually, beyond a threshold concentration, to a highly ordered hexagonal structure, as characterized by surface sensitive synchrotron X-ray reflectivity and grazing incidence X-ray diffraction. Furthermore, the method allows control of the inplane packing in the crystalline phase by varying the K2CO3 and PEG-AuNPs concentrations and the length of PEG. Using polymer-brush theory, we argue that the assembly and crystallization is driven by the need to reduce surface tension between PEG and the salt solution. Our approach of taking advantage of the phase separation of PEG in salt solutions is general (i.e., can be used with any nanoparticles) leads to high-quality macroscopic and tunable crystals. Finally, we discuss how the method can also be applied to the design of orderly 3D structures.
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Affiliation(s)
- Honghu Zhang
- Ames Laboratory and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA
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38
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Das T, Lookman T, Bandi MM. Morphology dictated heterogeneous dynamics in two-dimensional aggregates. SOFT MATTER 2016; 12:9674-9682. [PMID: 27858040 DOI: 10.1039/c6sm02239a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Particulate aggregates occur in a variety of non-equilibrium steady-state morphologies ranging from finite-size compact crystalline structures to non-compact string-like conformations. This diversity is due to the competition between pair-wise short range attraction and long range repulsion between particles. We identify different microscopic mechanisms in action by following the simulated particle trajectories for different morphologies in two dimensions at a fixed density and temperature. In particular, we show that the compact clusters are governed by symmetric caging of particles by their nearest neighbors while sidewise asymmetric binding of particles leads to non-compact aggregates. The measured timescales for these two mechanisms are found to be distinctly different providing phenomenological evidence of a relation between microstructure and dynamics of particulate aggregates. Supporting these findings, the time dependent diffusivity is observed to differ across the morphological hierarchy, while the average long-time dynamics is, in general, sub-diffusive at 'low' temperatures. Finally, one generic relation between diffusivity and structural randomness, applicable to simple equilibrium systems, is validated for complex aggregate forming systems through further analysis of the same system at different temperatures.
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Affiliation(s)
- Tamoghna Das
- Collective Interactions Unit, OIST Graduate University, Onna, Okinawa 9040495, Japan.
| | - T Lookman
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | - M M Bandi
- Collective Interactions Unit, OIST Graduate University, Onna, Okinawa 9040495, Japan.
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39
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Zhou C, Zhang Y, Dong Y, Wu F, Wang D, Xin L, Liu D. Precisely Controlled 2D Free-Floating Nanosheets of Amphiphilic Molecules through Frame-Guided Assembly. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:9819-9823. [PMID: 27634461 DOI: 10.1002/adma.201603210] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 08/05/2016] [Indexed: 05/05/2023]
Abstract
2D assembly of amphiphilic molecules in aqueous solution is a challenging and intriguing topic as it is normally thermodynamically unfavorable. However, through frame-guided assembly strategy and using DNA origami as the frame, monodispersed and shape-defined nanosheets are prepared. As leading hydrophobic groups (LHGs) are anchored on the frames, amphiphilic molecules in aqueous solution are guided to assemble in the hydrophobic region. By adjusting the distribution of the LHGs, the size and shape of the assemblies can be controlled precisely.
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Affiliation(s)
- Chao Zhou
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Yiyang Zhang
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Yuanchen Dong
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Fen Wu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China
| | - Dianming Wang
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Ling Xin
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Dongsheng Liu
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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40
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Lequieu J, Córdoba A, Hinckley D, de Pablo JJ. Mechanical Response of DNA-Nanoparticle Crystals to Controlled Deformation. ACS CENTRAL SCIENCE 2016; 2:614-620. [PMID: 27725959 PMCID: PMC5043426 DOI: 10.1021/acscentsci.6b00170] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Indexed: 06/06/2023]
Abstract
The self-assembly of DNA-conjugated nanoparticles represents a promising avenue toward the design of engineered hierarchical materials. By using DNA to encode nanoscale interactions, macroscale crystals can be formed with mechanical properties that can, at least in principle, be tuned. Here we present in silico evidence that the mechanical response of these assemblies can indeed be controlled, and that subtle modifications of the linking DNA sequences can change the Young's modulus from 97 kPa to 2.1 MPa. We rely on a detailed molecular model to quantify the energetics of DNA-nanoparticle assembly and demonstrate that the mechanical response is governed by entropic, rather than enthalpic, contributions and that the response of the entire network can be estimated from the elastic properties of an individual nanoparticle. The results here provide a first step toward the mechanical characterization of DNA-nanoparticle assemblies, and suggest the possibility of mechanical metamaterials constructed using DNA.
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Affiliation(s)
- Joshua Lequieu
- Institute
for Molecular Engineering, University of
Chicago, Chicago, Illinois 60637, United
States
| | - Andrés Córdoba
- Institute
for Molecular Engineering, University of
Chicago, Chicago, Illinois 60637, United
States
| | - Daniel Hinckley
- Department
of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Juan J. de Pablo
- Institute
for Molecular Engineering, University of
Chicago, Chicago, Illinois 60637, United
States
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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41
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Assembling Bare Au Nanoparticles at Positively Charged Templates. Sci Rep 2016; 6:26462. [PMID: 27225047 PMCID: PMC4881021 DOI: 10.1038/srep26462] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 05/04/2016] [Indexed: 11/16/2022] Open
Abstract
In-situ X-ray reflectivity (XRR) and grazing incidence X-ray small-angle scattering (GISAXS) reveal that unfunctionalized (bare) gold nanoparticles (AuNP) spontaneously adsorb to a cationic lipid template formed by a Langmuir monolayer of DPTAP (1,2-dihexadecanoyl-3-trimethylammonium-propane) at vapor/aqueous interfaces. Analysis of the XRR yields the electron density profile across the charged-interfaces along the surface normal showing the AuNPs assemble with vertical thickness comparable to the particle size. The GISAXS analysis indicates that the adsorbed mono-particle layer exhibits short-range in-plane correlations. By contrast, single-stranded DNA-functionalized AuNPs, while attracted to the positively charged surface (more efficiently with the addition of salt to the solution), display less in-plane regular packing compared to bare AuNPs.
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42
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Fukuto M, Yang L, Nykypanchuk D, Kuzmenko I. Transmission X-ray scattering as a probe for complex liquid-surface structures. JOURNAL OF SYNCHROTRON RADIATION 2016; 23:519-531. [PMID: 26917140 DOI: 10.1107/s1600577515023103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 12/01/2015] [Indexed: 06/05/2023]
Abstract
The need for functional materials calls for increasing complexity in self-assembly systems. As a result, the ability to probe both local structure and heterogeneities, such as phase-coexistence and domain morphologies, has become increasingly important to controlling self-assembly processes, including those at liquid surfaces. The traditional X-ray scattering methods for liquid surfaces, such as specular reflectivity and grazing-incidence diffraction, are not well suited to spatially resolving lateral heterogeneities due to large illuminated footprint. A possible alternative approach is to use scanning transmission X-ray scattering to simultaneously probe local intermolecular structures and heterogeneous domain morphologies on liquid surfaces. To test the feasibility of this approach, transmission small- and wide-angle X-ray scattering (TSAXS/TWAXS) studies of Langmuir films formed on water meniscus against a vertically immersed hydrophilic Si substrate were recently carried out. First-order diffraction rings were observed in TSAXS patterns from a monolayer of hexagonally packed gold nanoparticles and in TWAXS patterns from a monolayer of fluorinated fatty acids, both as a Langmuir monolayer on water meniscus and as a Langmuir-Blodgett monolayer on the substrate. The patterns taken at multiple spots have been analyzed to extract the shape of the meniscus surface and the ordered-monolayer coverage as a function of spot position. These results, together with continual improvement in the brightness and spot size of X-ray beams available at synchrotron facilities, support the possibility of using scanning-probe TSAXS/TWAXS to characterize heterogeneous structures at liquid surfaces.
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Affiliation(s)
- Masafumi Fukuto
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Lin Yang
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Dmytro Nykypanchuk
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Ivan Kuzmenko
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
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43
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Che J, Park K, Grabowski CA, Jawaid A, Kelley J, Koerner H, Vaia RA. Preparation of Ordered Monolayers of Polymer Grafted Nanoparticles: Impact of Architecture, Concentration, and Substrate Surface Energy. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02722] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Justin Che
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
- National Research
Council, Washington, D.C. 20001, United States
| | - Kyoungweon Park
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Christopher A. Grabowski
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Ali Jawaid
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - John Kelley
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Hilmar Koerner
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
| | - Richard A. Vaia
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson
Air Force Base, Ohio 45433, United States
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44
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Sánchez PA, Pyanzina ES, Novak EV, Cerdà JJ, Sintes T, Kantorovich SS. Magnetic filament brushes: tuning the properties of a magnetoresponsive supracolloidal coating. Faraday Discuss 2016; 186:241-63. [PMID: 26786683 DOI: 10.1039/c5fd00133a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a theoretical study on the design of a supramolecular magnetoresponsive coating. The coating is formed by a relatively dense array of supracolloidal magnetic filaments grafted to a surface in a polymer brush-like arrangement. In order to determine and optimise the properties of the magnetic filament brush, we perform extensive computer simulations with a coarse-grained model that takes into account the correlations between the magnetic moments of the particles and the backbone crosslinks. We show that the self-assembly of magnetic beads from neighbouring filaments defines the equilibrium structural properties of the complete brush. In order to control this self-assembly, we highlight two external stimuli that can lead to significant effects: temperature of the system and an externally applied magnetic field. Our study reveals self-assembly scenarios inherently driven by the crosslinking and grafting constraints. Finally, we explain the mechanisms of structural changeovers in the magnetic filament brushes and confirm the possibility of controlling them by changing the temperature or the intensity of an external magnetic field.
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Affiliation(s)
| | - Elena S Pyanzina
- Ural Federal University, Lenin av. 51, 620000 Ekaterinburg, Russia
| | | | - Joan J Cerdà
- Instituto de Física Interdisciplinar y Sistemas Complejos (CSIC-UIB), E-07122 Palma de Mallorca, Spain
| | - Tomàs Sintes
- Instituto de Física Interdisciplinar y Sistemas Complejos (CSIC-UIB), E-07122 Palma de Mallorca, Spain
| | - Sofia S Kantorovich
- University of Vienna, Sensengasse 8, 1090 Vienna, Austria. and Ural Federal University, Lenin av. 51, 620000 Ekaterinburg, Russia
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45
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Jiang K, Ma S, Zhang Y, Han X. Formation of square prism-shaped poly(o-phenylenediamine) fibers triggered by high ionic strength. RSC Adv 2016. [DOI: 10.1039/c6ra00204h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
A simple bottom-up method to fabricate novel square prism-shaped poly(o-phenylenediamine) (PoPD) hierarchical fibers.
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Affiliation(s)
- Kunpeng Jiang
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Shenghua Ma
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Ying Zhang
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Xiaojun Han
- State Key Laboratory of Urban Water Resource and Environment
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
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46
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Ma W, Xu L, Wang L, Kuang H, Xu C. Orientational nanoparticle assemblies and biosensors. Biosens Bioelectron 2015; 79:220-36. [PMID: 26708241 DOI: 10.1016/j.bios.2015.12.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 12/06/2015] [Accepted: 12/12/2015] [Indexed: 02/01/2023]
Abstract
Assemblies of nanoparticles (NPs) have regional correlated properties with new features compared to individual NPs or random aggregates. The orientational NP assembly contributes greatly to the collective interaction of individual NPs with geometrical dependence. Therefore, orientational NPs assembly techniques have emerged as promising tools for controlling inorganic NPs spatial structures with enhanced interesting properties. The research fields of orientational NP assembly have developed rapidly with characteristics related to the different methods used, including chemical, physical and biological techniques. The current and potential applications, important challenges remain to be investigated. An overview of recent developments in orientational NPs assemblies, the multiple strategies, biosensors and challenges will be discussed in this review.
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Affiliation(s)
- Wei Ma
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Liguang Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Libing Wang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
| | - Hua Kuang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
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47
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Yan Y, Shan H, Li M, Chen S, Liu J, Cheng Y, Ye C, Yang Z, Lai X, Hu J. Internal-Modified Dithiol DNA-Directed Au Nanoassemblies: Geometrically Controlled Self-Assembly and Quantitative Surface-Enhanced Raman Scattering Properties. Sci Rep 2015; 5:16715. [PMID: 26581251 PMCID: PMC4652228 DOI: 10.1038/srep16715] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 10/19/2015] [Indexed: 12/25/2022] Open
Abstract
In this work, a hierarchical DNA-directed self-assembly strategy to construct structure-controlled Au nanoassemblies (NAs) has been demonstrated by conjugating Au nanoparticles (NPs) with internal-modified dithiol single-strand DNA (ssDNA) (Au-B-A or A-B-Au-B-A). It is found that the dithiol-ssDNA-modified Au NPs and molecule quantity of thiol-modified ssDNA grafted to Au NPs play critical roles in the assembly of geometrically controlled Au NAs. Through matching Au-DNA self-assembly units, geometrical structures of the Au NAs can be tailored from one-dimensional (1D) to quasi-2D and 2D. Au-B-A conjugates readily give 1D and quasi-2D Au NAs while 2D Au NAs can be formed by A-B-Au-B-A building blocks. Surface-enhanced Raman scattering (SERS) measurements and 3D finite-difference time domain (3D-FDTD) calculation results indicate that the geometrically controllable Au NAs have regular and linearly "hot spots"-number-depended SERS properties. For a certain number of NPs, the number of "hot spots" and accordingly enhancement factor of Au NAs can be quantitatively evaluated, which open a new avenue for quantitative analysis based on SERS technique.
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Affiliation(s)
- Yuan Yan
- Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Hangyong Shan
- Department of Physics, Xiamen University, Xiamen 361005, China
| | - Min Li
- Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Shu Chen
- Department of Physics, Xiamen University, Xiamen 361005, China
| | | | - Yanfang Cheng
- Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Cui Ye
- Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Department of Physics, Xiamen University, Xiamen 361005, China
| | - Zhilin Yang
- Department of Physics, Xiamen University, Xiamen 361005, China
| | - Xuandi Lai
- Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jianqiang Hu
- Department of Chemistry, College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
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Sánchez PA, Pyanzina ES, Novak EV, Cerdà JJ, Sintes T, Kantorovich SS. Supramolecular Magnetic Brushes: The Impact of Dipolar Interactions on the Equilibrium Structure. Macromolecules 2015; 48:7658-7669. [PMID: 26538768 PMCID: PMC4625168 DOI: 10.1021/acs.macromol.5b01086] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 09/08/2015] [Indexed: 11/30/2022]
Abstract
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The
equilibrium structure of supramolecular magnetic filament brushes
is analyzed at two different scales. First, we study the density and
height distributions for brushes with various grafting densities and
chain lengths. We use Langevin dynamics simulations with a bead–spring
model that takes into account the cross-links between the surface
of the ferromagnetic particles, whose magnetization is characterized
by a point dipole. Magnetic filament brushes are shown to be more
compact near the substrate than nonmagnetic ones, with a bimodal height
distribution for large grafting densities. This latter feature makes
them also different from brushes with electric dipoles. Next, in order
to explain the observed behavior at the filament scale, we introduce
a graph theory analysis to elucidate for the first time the structure
of the brush at the scale of individual beads. It turns out that,
in contrast to nonmagnetic brushes, in which the internal structure
is determined by random density fluctuations, magnetic forces introduce
a certain order in the system. Because of their highly directional
nature, magnetic dipolar interactions prevent some of the random connections
to be formed. On the other hand, they favor a higher connectivity
of the chains’ free and grafted ends. We show that this complex
dipolar brush microstructure has a strong impact on the magnetic response
of the brush, as any weak applied field has to compete with the dipole–dipole
interactions within the crowded environment.
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Affiliation(s)
| | - Elena S Pyanzina
- Ural Federal University , Lenin av. 51, 620000, Ekaterinburg, Russia
| | - Ekaterina V Novak
- Ural Federal University , Lenin av. 51, 620000, Ekaterinburg, Russia
| | - Joan J Cerdà
- Instituto de Física Interdisciplinar y Sistemas Complejos, IFISC (CSIC-UIB) , E-07122 Palma de Mallorca, Spain
| | - Tomas Sintes
- Instituto de Física Interdisciplinar y Sistemas Complejos, IFISC (CSIC-UIB) , E-07122 Palma de Mallorca, Spain
| | - Sofia S Kantorovich
- University of Vienna , Sensengasse 8, 1090, Vienna, Austria ; Ural Federal University , Lenin av. 51, 620000, Ekaterinburg, Russia
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Dallas P, Georgakilas V. Interfacial polymerization of conductive polymers: Generation of polymeric nanostructures in a 2-D space. Adv Colloid Interface Sci 2015; 224:46-61. [PMID: 26272721 DOI: 10.1016/j.cis.2015.07.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 07/14/2015] [Accepted: 07/22/2015] [Indexed: 11/19/2022]
Abstract
In the recent advances in the field of conductive polymers, the fibrillar or needle shaped nanostructures of polyaniline and polypyrrole have attracted significant attention due to the potential advantages of organic conductors that exhibit low-dimensionality, uniform size distribution, high crystallinity and improved physical properties compared to their bulk or spherically shaped counterparts. Carrying the polymerization reaction in a restricted two dimensional space, instead of the three dimensional space of the one phase solution is an efficient method for the synthesis of polymeric nanostructures with narrow size distribution and small diameter. Ultra-thin nanowires and nanofibers, single crystal nanoneedles, nanocomposites with noble metals or carbon nanotubes and layered materials can be efficiently synthesized with high yield and display superior performance in sensors and energy storage applications. In this critical review we will focus not only on the interfacial polymerization methods that leads to polymeric nanostructures and composites and their properties, but also on the mechanism and the physico-chemical processes that govern the diffusion and reactivity of molecules and nanomaterials at an interface. Recent advances for the synthesis of conductive polymer composites with an interfacial method for energy storage applications and future perspectives are presented.
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50
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Das T, Lookman T, Bandi MM. A minimal description of morphological hierarchy in two-dimensional aggregates. SOFT MATTER 2015; 11:6740-6746. [PMID: 26107688 DOI: 10.1039/c5sm01222h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A dimensionless parameter Λ is proposed to describe a hierarchy of morphologies in two-dimensional (2D) aggregates formed due to varying competition between short-range attraction and long-range repulsion. Structural transitions from finite non-compact to compact to percolated structures are observed in the configurations simulated by molecular dynamics at a constant temperature and density. Configurational randomness across the transition, measured by the two-body excess entropy S2, exhibits data collapse with the average potential energy [small epsilon, Greek, macron] of the systems. Independent master curves are presented among S2, the reduced second virial coefficient B2* and Λ, justifying this minimal description. This work lays out a coherent basis for the study of 2D aggregate morphologies relevant to diverse nano- and bio-processes.
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Affiliation(s)
- Tamoghna Das
- Collective Interactions Unit, OIST Graduate University, Onna, Okinawa 9040495, Japan.
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