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Zhu G, Gao L, Sun Y, Wei W, Yan LT. Non-equilibrium structural and dynamic behaviors of active polymers in complex and crowded environments. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2024; 87:054601. [PMID: 38608453 DOI: 10.1088/1361-6633/ad3e11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/12/2024] [Indexed: 04/14/2024]
Abstract
Active matter systems, which convert internal chemical energy or energy from the environment into directed motion, are ubiquitous in nature and exhibit a range of emerging non-equilibrium behaviors. However, most of the current works on active matter have been devoted to particles, and the study of active polymers has only recently come into the spotlight due to their prevalence within living organisms. The intricate interplay between activity and conformational degrees of freedom gives rise to novel structural and dynamical behaviors of active polymers. Research in active polymers remarkably broadens diverse concepts of polymer physics, such as molecular architecture, dynamics, scaling and so on, which is of significant importance for the development of new polymer materials with unique performance. Furthermore, active polymers are often found in strongly interacting and crowded systems and in complex environments, so that the understanding of this behavior is essential for future developments of novel polymer-based biomaterials. This review thereby focuses on the study of active polymers in complex and crowded environments, and aims to provide insights into the fundamental physics underlying the adaptive and collective behaviors far from equilibrium, as well as the open challenges that the field is currently facing.
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Affiliation(s)
- Guolong Zhu
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Lijuan Gao
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yihang Sun
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Wenjie Wei
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
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2
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Li HY, Zhang B, Wang ZY. Conformational and static properties of tagged chains in solvents: effect of chain connectivity in solvent molecules. SOFT MATTER 2024; 20:3073-3081. [PMID: 38265776 DOI: 10.1039/d3sm01473h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Polymer chains immersed in different solvent molecules exhibit diverse properties due to multiple spatiotemporal scales and complex interactions. Using molecular dynamics simulations, we study the conformational and static properties of tagged chains in different solvent molecules. Two types of solvent molecules were examined: one type consisted of chain molecules connected by bonds, while the other type consisted of individual bead molecules without any bonds. The only difference between the two solvent molecules lies in the chain connectivity. Our results show a compression of the tagged chains with the addition of bead or chain molecules. Chain molecule confinement induces a stronger compression compared to bead molecule confinement. In chain solvent molecules, the tagged chain's radius of gyration reached a minimum at a monomer volume fraction of ∼0.3. Notably, the probability distributions of chain size remain unchanged at different solvent densities, irrespective of whether the solvent consists of beads or polymers. Furthermore, as solvent density increases, a crossover from a unimodal to a bimodal distribution of bond angles is observed, indicating the presence of both compressed and expanded regions within the chain. The effective monomer-solvent interaction is obtained by calculating the partial radial distribution function and the potential of the mean force. In chain solvents, the correlation hole effect results in a reduced number of nearest neighbors around tagged monomers compared to bead solvents. The calculation of pore size distribution reveals that the solvent nonhomogeneity induced by chain connectivity leads to a broader distribution of pore sizes and larger pore dimensions at low volume fractions. These findings provide a deeper understanding of the conformational behavior of polymer chains in different solvent environments.
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Affiliation(s)
- Hong-Yao Li
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
- Chongqing Key Laboratory of Micro-Nano Structure Optoelectronics, Chongqing 400715, China
| | - Bokai Zhang
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
- Chongqing Key Laboratory of Micro-Nano Structure Optoelectronics, Chongqing 400715, China
| | - Zhi-Yong Wang
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
- Chongqing Key Laboratory of Micro-Nano Structure Optoelectronics, Chongqing 400715, China
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3
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Saeed S, Zia A, Liu R, Liu D, Cao L, Wang Z. Optimizing broadband antireflection with Au micropatterns: a combined FDTD simulation and two-beam LIL approach. APPLIED OPTICS 2024; 63:1394-1401. [PMID: 38437320 DOI: 10.1364/ao.514445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/13/2024] [Indexed: 03/06/2024]
Abstract
Broadband antireflection (AR) is highly significant in a wide range of optical applications, and using a gold (Au) micropattern presents a viable method for controlling the behavior of light propagation. This study investigates a novel, to the best of our knowledge, methodology to achieve broadband AR properties in Au micropatterns. It employed the three-dimensional finite-difference time-domain (FDTD) method to simulate and optimize the design of micropatterns. In contrast, the fabrication of Au micropatterns was carried out using two-beam laser interference lithography (LIL). The fabricated Au micropatterns were characterized by a scanning electron microscope (SEM) and spectroscope to validate their antireflection and transmission properties and evaluate their performance at various wavelengths. The optimized Au micropatterns had a high transmittance rating of 96.2%. In addition, the device exhibits a broad-spectrum antireflective property, covering wavelengths ranging from 400 to 1100 nm. The simulation data and experimentally derived results show comparable patterns. These structures can potentially be employed in many optical devices, such as solar cells and photodetectors, whereby achieving optimal device performance reduced reflection and enhanced light absorption.
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Chervanyov AI. Spinodal Decomposition of Filled Polymer Blends: The Role of the Osmotic Effect of Fillers. Polymers (Basel) 2023; 16:38. [PMID: 38201702 PMCID: PMC10780493 DOI: 10.3390/polym16010038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
The reported work addresses the effect of fillers on the thermodynamic stability and miscibility of compressible polymer blends. We calculate the spinodal transition temperature of a filled polymer blend as a function of the interaction energies between the blend species, as well as the blend composition, filler size, and filler volume fraction. The calculation method relies on the developed thermodynamic theory of filled compressible polymer blends. This theory makes it possible to obtain the excess pressure and chemical potential caused by the presence of fillers. As a main result of the reported work, we demonstrate that the presence of neutral (non-adsorbing) fillers can be used to enhance the stability of a polymer blend that shows low critical solution temperature (LCST) behavior. The obtained results highlight the importance of the osmotic effect of fillers on the miscibility of polymer blends. The demonstrated good agreement with the experiment proves that this effect alone can explain the observed filler-induced change in the LCST.
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Affiliation(s)
- A I Chervanyov
- Institute of Theoretical Physics, University of Münster, 48149 Münster, Germany
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Zhang X, Dai X, Gao L, Xu D, Wan H, Wang Y, Yan LT. The entropy-controlled strategy in self-assembling systems. Chem Soc Rev 2023; 52:6806-6837. [PMID: 37743794 DOI: 10.1039/d3cs00347g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Self-assembly of various building blocks has been considered as a powerful approach to generate novel materials with tailorable structures and optimal properties. Understanding physicochemical interactions and mechanisms related to structural formation and transitions is of essential importance for this approach. Although it is well-known that diverse forces and energies can significantly contribute to the structures and properties of self-assembling systems, the potential entropic contribution remains less well understood. The past few years have witnessed rapid progress in addressing the entropic effects on the structures, responses, and functions in the self-assembling systems, and many breakthroughs have been achieved. This review provides a framework regarding the entropy-controlled strategy of self-assembly, through which the structures and properties can be tailored by effectively tuning the entropic contribution and its interplay with the enthalpic counterpart. First, we focus on the fundamentals of entropy in thermodynamics and the entropy types that can be explored for self-assembly. Second, we discuss the rules of entropy in regulating the structural organization in self-assembly and delineate the entropic force and superentropic effect. Third, we introduce the basic principles, significance and approaches of the entropy-controlled strategy in self-assembly. Finally, we present the applications where this strategy has been employed in fields like colloids, macromolecular systems and nonequilibrium assembly. This review concludes with a discussion on future directions and future research opportunities for developing and applying the entropy-controlled strategy in complex self-assembling systems.
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Affiliation(s)
- Xuanyu Zhang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Xiaobin Dai
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Lijuan Gao
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Duo Xu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Haixiao Wan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Yuming Wang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
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Gupta N, Jayaraman A. Computational approach for structure generation of anisotropic particles (CASGAP) with targeted distributions of particle design and orientational order. NANOSCALE 2023; 15:14958-14970. [PMID: 37656010 DOI: 10.1039/d3nr02425c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The macroscopic properties of materials are governed by their microscopic structure which depends on the materials' composition (i.e., building blocks) and processing conditions. In many classes of synthetic, bioinspired, or natural soft and/or nanomaterials, one can find structural anisotropy in the microscopic structure due to anisotropic building blocks and/or anisotropic domains formed through the processing conditions. Experimental characterization and complementary physics-based or data-driven modeling of materials' structural anisotropy are critical for understanding structure-property relationships and enabling targeted design of materials with desired macroscopic properties. In this pursuit, to interpret experimentally obtained characterization results (e.g., scattering profiles) of soft materials with structural anisotropy using data-driven computational approaches, there is a need for creating real space three-dimensional structures of the designer soft materials with realistic physical features (e.g., dispersity in building block sizes) and anisotropy (i.e., aspect ratios of the building blocks, their orientational and positional order). These real space structures can then be used to compute and complement experimentally obtained characterization results or be used as initial configurations for physics-based simulations/calculations that can then provide training data for machine learning models. To address this need, we present a new computational approach called CASGAP - Computational Approach for Structure Generation of Anisotropic Particles - for generating any desired three dimensional real-space structure of anisotropic building blocks (modeled as particles) adhering to target distributions of particle shape, size, and positional and orientational order.
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Affiliation(s)
- Nitant Gupta
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St, Newark, DE 19716, USA.
| | - Arthi Jayaraman
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St, Newark, DE 19716, USA.
- Department of Materials Science and Engineering, University of Delaware, 201 Dupont Hall, Newark, DE 19716, USA
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Pan F, Sun L, Li S. Dynamic Processes and Mechanical Properties of Lipid-Nanoparticle Mixtures. Polymers (Basel) 2023; 15:polym15081828. [PMID: 37111975 PMCID: PMC10144953 DOI: 10.3390/polym15081828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/23/2023] [Accepted: 04/03/2023] [Indexed: 04/29/2023] Open
Abstract
In this study, we investigate the dynamic processes and mechanical properties of lipid nanoparticle mixtures in a melt via dissipation particle dynamic simulation. By investigating the distribution of nanoparticles in lamellar and hexagonal lipid matrices in equilibrium state and dynamic processes, we observe that the morphology of such composites depends not only on the geometric features of the lipid matrix but also on the concentration of nanoparticles. The dynamic processes are also demonstrated by calculating the average radius of gyration, which indicates the isotropic conformation of lipid molecules in the x-y plane and that the lipid chains are stretched in the z direction with the addition of nanoparticles. Meanwhile, we predict the mechanical properties of lipid-nanoparticle mixtures in lamellar structures by analyzing the interfacial tensions. Results show that the interfacial tension decreased with the increase in nanoparticle concentration. These results provide molecular-level information for the rational and a priori design of new lipid nanocomposites with ad hoc tailored properties.
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Affiliation(s)
- Fan Pan
- School of Data Science and Artificial Intelligence, Wenzhou University of Technology, Wenzhou 325035, China
| | - Lingling Sun
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Shiben Li
- Department of Physics, Wenzhou University, Wenzhou 325035, China
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8
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Xu D, Wan HX, Yao XR, Li J, Yan LT. Molecular Simulations in Macromolecular Science. CHINESE JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1007/s10118-023-2968-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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9
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Elmowafy E, O El-Derany M, Casettari L, Soliman ME, El-Gogary RI. Gamma oryzanol loaded into micelle-core/chitosan-shell: from translational nephroprotective potential to emphasis on sirtuin-1 associated machineries. Int J Pharm 2023; 631:122482. [PMID: 36513255 DOI: 10.1016/j.ijpharm.2022.122482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 12/02/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022]
Abstract
Gamma oryzanol (ORZ) is a nutraceutical that is poorly water soluble with poor intestinal absorption. In the current work, ORZ was nanoformulated into uncoated and chitosan coated micelles based on methoxy-poly(ethylene glycol)-b-poly(ε-caprolactone) (mPEG-PCL) and poly(ε-caprolactone)-b-methoxy-poly(ethylene glycol)-b-poly(ε-caprolactone) (PCL-PEG-PCL) copolymers for augmenting ORZ oral delivery. The physicochemical properties, morphological study, in-vitro release and safety of the nanoplaforms were determined. Importantly, the nephroprotective competence of the nanoplaforms was analyzed against acute kidney injury (AKI) rat model and the sirtuin-1 associated machineries were assessed. The results revealed that the micelles exerted particle size (PS) from 97.9 to 117.8 nm that was markedly increased after chitosan coating. The reversal of zeta potential from negative to highly positive further confirmed efficient coating. In vitro release profiles demonstrated prolonged release pattern. The nanoforms conferred higher cell viability values than free ORZ on Vero cell line. The designed micelles displayed augmented nephroprotection compared to free ORZ with the supremacy of CS coated micelles over uncoated ones in restoring kidney parameters to normal levels. The attenuated AKI was fulfilled via the modulation of sirtuin-1 signaling pathways translated by restoring the histological features, increasing renal antioxidant states, renal autophagy and decreasing renal inflammation and renal apoptosis. These outcomes confirmed that surface modification with chitosan had a considerable leverage on micelles safety, release behavior and in vivo performance.
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Affiliation(s)
- Enas Elmowafy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt
| | - Marwa O El-Derany
- Department of Biochemistry, Faculty of Pharmacy, AinShams University, Cairo, Egypt, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt
| | - Luca Casettari
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Piazza delRinascimento, 6, 61029 Urbino, PU, Italy
| | - Mahmoud E Soliman
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt; Egypt-Japan University of Science and Technology (EJUST), New Borg El Arab, Alexandria 21934, Egypt.
| | - Riham I El-Gogary
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt, Monazzamet Elwehda Elafrikeya Street, Abbaseyya, Cairo 11566, Egypt
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10
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The phase change hysteresis characteristics ofNa2HPO4·12H2O: A molecular dynamics study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Liu Z, Lan Y, Jia J, Geng Y, Dai X, Yan L, Hu T, Chen J, Matyjaszewski K, Ye G. Multi-scale computer-aided design and photo-controlled macromolecular synthesis boosting uranium harvesting from seawater. Nat Commun 2022; 13:3918. [PMID: 35798729 PMCID: PMC9262957 DOI: 10.1038/s41467-022-31360-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 06/15/2022] [Indexed: 11/09/2022] Open
Abstract
By integrating multi-scale computational simulation with photo-regulated macromolecular synthesis, this study presents a new paradigm for smart design while customizing polymeric adsorbents for uranium harvesting from seawater. A dissipative particle dynamics (DPD) approach, combined with a molecular dynamics (MD) study, is performed to simulate the conformational dynamics and adsorption process of a model uranium grabber, i.e., PAOm-b-PPEGMAn, suggesting that the maximum adsorption capacity with atomic economy can be achieved with a preferred block ratio of 0.18. The designed polymers are synthesized using the PET-RAFT polymerization in a microfluidic platform, exhibiting a record high adsorption capacity of uranium (11.4 ± 1.2 mg/g) in real seawater within 28 days. This study offers an integrated perspective to quantitatively assess adsorption phenomena of polymers, bridging metal-ligand interactions at the molecular level with their spatial conformations at the mesoscopic level. The established protocol is generally adaptable for target-oriented development of more advanced polymers for broadened applications. Developing materials for uranium harvesting from seawater with high adsorption capacity remains challenging. Here, the authors develop a new protocol, by combining multi-scale computational simulations with the PET-RAFT polymerization, for rational design and precise synthesis of block copolymers with optimal architectures and atomic economy, achieving a capacity of 11.4 mg/g within 28 days.
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Affiliation(s)
- Zeyu Liu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Youshi Lan
- China Institute of Atomic Energy, Department of Radiochemistry, 102413, Beijing, People's Republic of China
| | - Jianfeng Jia
- Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Yiyun Geng
- Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Xiaobin Dai
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Litang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Tongyang Hu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Jing Chen
- Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA, 15213, USA.
| | - Gang Ye
- Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China.
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Microscopic Interface and Multiscale Failure Analysis of Proposed Molecular Chain Polymers Based on Aifantis Strain Gradient Theory. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:1153080. [PMID: 35634065 PMCID: PMC9132640 DOI: 10.1155/2022/1153080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 11/19/2022]
Abstract
A study on the microscopic morphology of real-world polymer blends and its mechanism of change showed that the microscopic morphology of equiproportional mixtures gradually changed from a dense body structure to a network structure with the addition of the total polymer concentration up to 20%; the microscopic morphology of mixtures with different proportions was characterized by the most uniform network structure of equiproportional mixtures when the total polymer concentration was 20%. The polymer acts as a defoamer in the mixed system. In this paper, the relationship between the microscopic morphology of each mixture and the physicochemical behavior of the two polymer chains in the mixed system was investigated on the basis of the Aifantis strain gradient theory. Molecular polymer microscopic interface and multiscale failure analysis are proposed. It is shown that for the dihedral angle distribution of four consecutive coarse-grained particles, the peaks obtained from all atomic-scale simulation data are reproduced in the coarse-grained model simulations. The deviation is within 2.5% in most places, except for the local area where the deviation exceeds 5%. Therefore, we have achieved good results for large-scale failures.
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Altorbaq AS, Krauskopf AA, Wen X, Pérez-Camargo RA, Su Y, Wang D, Müller AJ, Kumar SK. Crystallization Kinetics and Nanoparticle Ordering in Semicrystalline Polymer Nanocomposites. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101527] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Experimental and Simulation Studies of Temperature Effect on Thermophysical Properties of Graphene-Based Polylactic Acid. MATERIALS 2022; 15:ma15030986. [PMID: 35160931 PMCID: PMC8839625 DOI: 10.3390/ma15030986] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/17/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023]
Abstract
Overheating effect is a crucial issue in different fields. Thermally conductive polymer-based heat sinks, with lightweight and moldability features as well as high-performance and reliability, are promising candidates in solving such inconvenience. The present work deals with the experimental evaluation of the temperature effect on the thermophysical properties of nanocomposites made with polylactic acid (PLA) reinforced with two different weight percentages (3 and 6 wt%) of graphene nanoplatelets (GNPs). Thermal conductivity and diffusivity, as well as specific heat capacity, are measured in the temperature range between 298.15 and 373.15 K. At the lowest temperature (298.15 K), an improvement of 171% is observed for the thermal conductivity compared to the unfilled matrix due to the addition of 6 wt% of GNPs, whereas at the highest temperature (372.15 K) such enhancement is about of 155%. Some of the most important mechanical properties, mainly hardness and Young’s modulus, maximum flexural stress, and tangent modulus of elasticity, are also evaluated as a function of the GNPs content. Moreover, thermal simulations based on the finite element method (FEM) have been carried out to predict the thermal performance of the investigated nanocomposites in view of their practical use in thermal applications. Results seem quite suitable in this regard.
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Fu S, Li G, Zang W, Zhou X, Shi K, Zhai Y. Pure drug nano-assemblies: A facile carrier-free nanoplatform for efficient cancer therapy. Acta Pharm Sin B 2022; 12:92-106. [PMID: 35127374 PMCID: PMC8799886 DOI: 10.1016/j.apsb.2021.08.012] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/24/2021] [Accepted: 07/07/2021] [Indexed: 12/12/2022] Open
Abstract
Nanoparticulate drug delivery systems (Nano-DDSs) have emerged as possible solution to the obstacles of anticancer drug delivery. However, the clinical outcomes and translation are restricted by several drawbacks, such as low drug loading, premature drug leakage and carrier-related toxicity. Recently, pure drug nano-assemblies (PDNAs), fabricated by the self-assembly or co-assembly of pure drug molecules, have attracted considerable attention. Their facile and reproducible preparation technique helps to remove the bottleneck of nanomedicines including quality control, scale-up production and clinical translation. Acting as both carriers and cargos, the carrier-free PDNAs have an ultra-high or even 100% drug loading. In addition, combination therapies based on PDNAs could possibly address the most intractable problems in cancer treatment, such as tumor metastasis and drug resistance. In the present review, the latest development of PDNAs for cancer treatment is overviewed. First, PDNAs are classified according to the composition of drug molecules, and the assembly mechanisms are discussed. Furthermore, the co-delivery of PDNAs for combination therapies is summarized, with special focus on the improvement of therapeutic outcomes. Finally, future prospects and challenges of PDNAs for efficient cancer therapy are spotlighted.
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Key Words
- ABC, accelerated blood clearance
- ACT, adoptive cell transfer
- ATO, atovaquone
- ATP, adenosine triphosphate
- BV, Biliverdin
- Ber, berberine
- CI, combination index
- CPT, camptothecin
- CTLs, cytotoxic T lymphocytes
- Cancer treatment
- Carrier-free
- Ce6, chlorine e6
- Combination therapy
- DBNP, DOX-Ber nano-assemblies
- DBNP@CM, DBNP were cloaked with 4T1 cell membranes
- DCs, dendritic cells
- DOX, doxorubicin
- DPDNAs, dual pure drug nano-assemblies
- EGFR, epithelial growth factor receptor
- EPI, epirubicin
- EPR, enhanced permeability and retention
- FRET, Forster Resonance Energy Transfer
- GEF, gefitinib
- HCPT, hydroxycamptothecin
- HMGB1, high-mobility group box 1
- IC50, half maximal inhibitory concentration
- ICB, immunologic checkpoint blockade
- ICD, immunogenic cell death
- ICG, indocyanine green
- ITM, immunosuppressive tumor microenvironment
- MDS, molecular dynamics simulations
- MPDNAs, multiple pure drug nano-assemblies
- MRI, magnetic resonance imaging
- MTX, methotrexate
- NIR, near-infrared
- NPs, nanoparticles
- NSCLC, non-small cell lung cancer
- Nano-DDSs, nanoparticulate drug delivery systems
- Nanomedicine
- Nanotechnology
- PAI, photoacoustic imaging
- PD-1, PD receptor 1
- PD-L1, PD receptor 1 ligand
- PDNAs, pure drug nano-assemblies
- PDT, photodynamic therapy
- PPa, pheophorbide A
- PTT, photothermal therapy
- PTX, paclitaxel
- Poly I:C, polyriboinosinic:polyribocytidylic acid
- Pure drug
- QSNAP, quantitative structure-nanoparticle assembly prediction
- RBC, red blood cell
- RNA, ribonucleic acid
- ROS, reactive oxygen species
- SPDNAs, single pure drug nano-assemblies
- Self-assembly
- TA, tannic acid
- TEM, transmission electron microscopy
- TLR4, Toll-like receptor 4
- TME, tumor microenvironment
- TNBC, triple negative breast
- TTZ, trastuzumab
- Top I & II, topoisomerase I & II
- UA, ursolic acid
- YSV, tripeptide tyroservatide
- ZHO, Z-Histidine-Obzl
- dsRNA, double-stranded RNA
- α-PD-L1, anti-PD-L1 monoclonal antibody
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Affiliation(s)
- Shuwen Fu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Guanting Li
- Department of Pharmaceutics, Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Wenli Zang
- Department of Periodontology, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Disease, Shenyang 110016, China
| | - Xinyu Zhou
- Bio-system Pharmacology, Graduate School of Medicine, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Kexin Shi
- Department of Biomedical Engineering, School of Medical Device, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yinglei Zhai
- Department of Biomedical Engineering, School of Medical Device, Shenyang Pharmaceutical University, Shenyang 110016, China
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16
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Feng QK, Zhong SL, Pei JY, Zhao Y, Zhang DL, Liu DF, Zhang YX, Dang ZM. Recent Progress and Future Prospects on All-Organic Polymer Dielectrics for Energy Storage Capacitors. Chem Rev 2021; 122:3820-3878. [PMID: 34939420 DOI: 10.1021/acs.chemrev.1c00793] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
With the development of advanced electronic devices and electric power systems, polymer-based dielectric film capacitors with high energy storage capability have become particularly important. Compared with polymer nanocomposites with widespread attention, all-organic polymers are fundamental and have been proven to be more effective choices in the process of scalable, continuous, and large-scale industrial production, leading to many dielectric and energy storage applications. In the past decade, efforts have intensified in this field with great progress in newly discovered dielectric polymers, fundamental production technologies, and extension toward emerging computational strategies. This review summarizes the recent progress in the field of energy storage based on conventional as well as heat-resistant all-organic polymer materials with the focus on strategies to enhance the dielectric properties and energy storage performances. The key parameters of all-organic polymers, such as dielectric constant, dielectric loss, breakdown strength, energy density, and charge-discharge efficiency, have been thoroughly studied. In addition, the applications of computer-aided calculation including density functional theory, machine learning, and materials genome in rational design and performance prediction of polymer dielectrics are reviewed in detail. Based on a comprehensive understanding of recent developments, guidelines and prospects for the future development of all-organic polymer materials with dielectric and energy storage applications are proposed.
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Affiliation(s)
- Qi-Kun Feng
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Shao-Long Zhong
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Jia-Yao Pei
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Yu Zhao
- School of Electrical Engineering, Zheng Zhou University, Zhengzhou, Henan 450001, P. R. China
| | - Dong-Li Zhang
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Di-Fan Liu
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Yong-Xin Zhang
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Zhi-Min Dang
- State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. China
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17
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Bakhshandeh A, Segala M, Escobar Colla T. Equilibrium Conformations and Surface Charge Regulation of Spherical Polymer Brushes in Stretched Regimes. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c02077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Amin Bakhshandeh
- Instituto de Física, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
- Departamento de Físico-Química, Instituto de Química, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Maximiliano Segala
- Instituto de Física, Universidade Federal de Ouro Preto, 35400-000 Ouro Preto, Minas Gerais, Brazil
- Departamento de Físico-Química, Instituto de Química, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Thiago Escobar Colla
- Instituto de Física, Universidade Federal de Ouro Preto, 35400-000 Ouro Preto, Minas Gerais, Brazil
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18
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Equivalence between positive and negative refractive index materials in electrostatic cloaks. Sci Rep 2021; 11:20467. [PMID: 34650100 PMCID: PMC8516860 DOI: 10.1038/s41598-021-00124-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 10/07/2021] [Indexed: 11/08/2022] Open
Abstract
We investigate, both theoretically and numerically, the equivalence relationship between the positive and negative refraction index dielectric materials in electrostatic invisibility cloak. We have derived an analytical formula that enables fast calculate the corresponding positive dielectric constant from the negative refraction index material. The numerical results show that the negative refraction index material can be replaced by the positive refractive index materials in the static field cloak. This offers some new viewpoints for designing new sensing systems and devices in physics, colloid science, and engineering applications.
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19
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Li X, Li Z, Shen J, Zheng Z, Liu J. Role of a nanoparticle network in polymer mechanical reinforcement: insights from molecular dynamics simulations. Phys Chem Chem Phys 2021; 23:21797-21807. [PMID: 34550123 DOI: 10.1039/d1cp03153h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Fully understanding the mechanism by which nanoparticles (NPs) strengthen polymer matrices is crucial for fabricating high-performance polymer nanocomposites (PNCs). Herein, coarse-grained molecular dynamics simulations were adopted to explicitly investigate the reinforcing effect of a NP network. Our results revealed that increasing the NP-NP interactions induced the self-assembly of NPs into a three-dimensional (3D) network that reinforced the polymer matrix. The reinforcing mechanism of NP-NP interactions was quite different from that of NP-polymer interactions. The latter promoted the orientation of polymer chains to transfer the external stress, while the former distributed the stress throughout the NP network. This work revealed the mechanism by which the NP network reinforced the polymer matrix at the molecular level and also provided guidelines for developing high performance PNCs via interfacial modification.
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Affiliation(s)
- Xiu Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan, 430062, China.
| | - Ziwei Li
- College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Jianxiang Shen
- Department of Polymer Materials and Engineering, Jiaxing University, Jiaxing, 314001, China
| | - Zijian Zheng
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan, 430062, China.
| | - Jun Liu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
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20
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Lepcio P, Ondreáš F, Zárybnická K, Zbončák M, Svatík J, Jančář J. Phase diagram of bare particles in polymer nanocomposites: Uniting solution and melt blending. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Olson E, Liu F, Blisko J, Li Y, Tsyrenova A, Mort R, Vorst K, Curtzwiler G, Yong X, Jiang S. Self-assembly in biobased nanocomposites for multifunctionality and improved performance. NANOSCALE ADVANCES 2021; 3:4321-4348. [PMID: 36133470 PMCID: PMC9418702 DOI: 10.1039/d1na00391g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 06/26/2021] [Indexed: 06/16/2023]
Abstract
Concerns of petroleum dependence and environmental pollution prompt an urgent need for new sustainable approaches in developing polymeric products. Biobased polymers provide a potential solution, and biobased nanocomposites further enhance the performance and functionality of biobased polymers. Here we summarize the unique challenges and review recent progress in this field with an emphasis on self-assembly of inorganic nanoparticles. The conventional wisdom is to fully disperse nanoparticles in the polymer matrix to optimize the performance. However, self-assembly of the nanoparticles into clusters, networks, and layered structures provides an opportunity to address performance challenges and create new functionality in biobased polymers. We introduce basic assembly principles through both blending and in situ synthesis, and identify key technologies that benefit from the nanoparticle assembly in the polymer matrix. The fundamental forces and biobased polymer conformations are discussed in detail to correlate the nanoscale interactions and morphology with the macroscale properties. Different types of nanoparticles, their assembly structures and corresponding applications are surveyed. Through this review we hope to inspire the community to consider utilizing self-assembly to elevate functionality and performance of biobased materials. Development in this area sets the foundation for a new era of designing sustainable polymers in many applications including packaging, construction chemicals, adhesives, foams, coatings, personal care products, and advanced manufacturing.
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Affiliation(s)
- Emily Olson
- Mateirals Science and Engineering, Iowa State University Ames IA 50011 USA
- Polymer and Food Protection Consortium, Iowa State University Ames IA 50011 USA
| | - Fei Liu
- Mateirals Science and Engineering, Iowa State University Ames IA 50011 USA
| | - Jonathan Blisko
- Mechanical Engineering, Binghamton University Binghamton NY 13902 USA
| | - Yifan Li
- Mateirals Science and Engineering, Iowa State University Ames IA 50011 USA
| | - Ayuna Tsyrenova
- Mateirals Science and Engineering, Iowa State University Ames IA 50011 USA
| | - Rebecca Mort
- Mateirals Science and Engineering, Iowa State University Ames IA 50011 USA
- Polymer and Food Protection Consortium, Iowa State University Ames IA 50011 USA
| | - Keith Vorst
- Polymer and Food Protection Consortium, Iowa State University Ames IA 50011 USA
- Food Science and Human Nutrition, Iowa State University Ames IA 50011 USA
| | - Greg Curtzwiler
- Polymer and Food Protection Consortium, Iowa State University Ames IA 50011 USA
- Food Science and Human Nutrition, Iowa State University Ames IA 50011 USA
| | - Xin Yong
- Mechanical Engineering, Binghamton University Binghamton NY 13902 USA
| | - Shan Jiang
- Mateirals Science and Engineering, Iowa State University Ames IA 50011 USA
- Polymer and Food Protection Consortium, Iowa State University Ames IA 50011 USA
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22
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RuSseL: A Self-Consistent Field Theory Code for Inhomogeneous Polymer Interphases. COMPUTATION 2021. [DOI: 10.3390/computation9050057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this article, we publish the one-dimensional version of our in-house code, RuSseL, which has been developed to address polymeric interfaces through Self-Consistent Field calculations. RuSseL can be used for a wide variety of systems in planar and spherical geometries, such as free films, cavities, adsorbed polymer films, polymer-grafted surfaces, and nanoparticles in melt and vacuum phases. The code includes a wide variety of functional potentials for the description of solid–polymer interactions, allowing the user to tune the density profiles and the degree of wetting by the polymer melt. Based on the solution of the Edwards diffusion equation, the equilibrium structural properties and thermodynamics of polymer melts in contact with solid or gas surfaces can be described. We have extended the formulation of Schmid to investigate systems comprising polymer chains, which are chemically grafted on the solid surfaces. We present important details concerning the iterative scheme required to equilibrate the self-consistent field and provide a thorough description of the code. This article will serve as a technical reference for our works addressing one-dimensional polymer interphases with Self-Consistent Field theory. It has been prepared as a guide to anyone who wishes to reproduce our calculations. To this end, we discuss the current possibilities of the code, its performance, and some thoughts for future extensions.
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23
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Zhang Z, Wang Y, Liu P, Chen T, Hou G, Xu L, Wang X, Hu Z, Liu J, Zhang L. Quantitatively predicting the mechanical behavior of elastomers via fully atomistic molecular dynamics simulation. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Diaz J, Pinna M, Zvelindovsky AV, Pagonabarraga I. Parallel Hybrid Simulations of Block Copolymer Nanocomposites using Coarray Fortran. MACROMOL THEOR SIMUL 2021. [DOI: 10.1002/mats.202100007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Javier Diaz
- CECAM Centre Européen de Calcul Atomique et Moléculaire École Polytechnique Fédérale de Lausanne Batochime ‐ Avenue Forel 2 Lausanne 1015 Switzerland
| | - Marco Pinna
- Centre for Computational Physics University of Lincoln Brayford Pool Lincoln LN6 7TS UK
| | | | - Ignacio Pagonabarraga
- CECAM Centre Européen de Calcul Atomique et Moléculaire École Polytechnique Fédérale de Lausanne Batochime ‐ Avenue Forel 2 Lausanne 1015 Switzerland
- Departament de Física de la Matèria Condensada Universitat de Barcelona Martí i Franquès 1 Barcelona 08028 Spain
- Universitat de Barcelona Institute of Complex Systems (UBICS) Universitat de Barcelona Barcelona 08028 Spain
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25
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Cui Z, Huang Y. Exploration of the Structure–Property Relationship of Polymer‐Based Composites by Monte‐Carlo‐Coupled Viscoelastic Lattice Spring Model. ADVANCED THEORY AND SIMULATIONS 2021. [DOI: 10.1002/adts.202000202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhiwei Cui
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai 200237 China
| | - Yongmin Huang
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai 200237 China
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26
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Li W, Cao X, Merlitz H, Wu C. Rouse Mode Analysis of Relaxation in Polymer Blends. MACROMOL THEOR SIMUL 2020. [DOI: 10.1002/mats.202000084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Wei Li
- Department of Physics Xiamen University Xiamen 361005 P. R. China
| | - Xue‐Zheng Cao
- Department of Physics Xiamen University Xiamen 361005 P. R. China
| | - Holger Merlitz
- Leibniz‐Institut für Polymerforschung Dresden Dresden 01069 Germany
| | - Chen‐Xu Wu
- Department of Physics Xiamen University Xiamen 361005 P. R. China
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27
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Abdollahi A, Roghani-Mamaqani H, Razavi B, Salami-Kalajahi M. Photoluminescent and Chromic Nanomaterials for Anticounterfeiting Technologies: Recent Advances and Future Challenges. ACS NANO 2020; 14:14417-14492. [PMID: 33079535 DOI: 10.1021/acsnano.0c07289] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Counterfeiting and inverse engineering of security and confidential documents, such as banknotes, passports, national cards, certificates, and valuable products, has significantly been increased, which is a major challenge for governments, companies, and customers. From recent global reports published in 2017, the counterfeiting market was evaluated to be $107.26 billion in 2016 and forecasted to reach $206.57 billion by 2021 at a compound annual growth rate of 14.0%. Development of anticounterfeiting and authentication technologies with multilevel securities is a powerful solution to overcome this challenge. Stimuli-chromic (photochromic, hydrochromic, and thermochromic) and photoluminescent (fluorescent and phosphorescent) compounds are the most significant and applicable materials for development of complex anticounterfeiting inks with a high-security level and fast authentication. Highly efficient anticounterfeiting and authentication technologies have been developed to reach high security and efficiency. Applicable materials for anticounterfeiting applications are generally based on photochromic and photoluminescent compounds, for which hydrochromic and thermochromic materials have extensively been used in recent decades. A wide range of materials, such as organic and inorganic metal complexes, polymer nanoparticles, quantum dots, polymer dots, carbon dots, upconverting nanoparticles, and supramolecular structures, could display all of these phenomena depending on their physical and chemical characteristics. The polymeric anticounterfeiting inks have recently received significant attention because of their high stability for printing on confidential documents. In addition, the printing technologies including hand-writing, stamping, inkjet printing, screen printing, and anticounterfeiting labels are discussed for introduction of the most efficient methods for application of different anticounterfeiting inks. This review would help scientists to design and develop the most applicable encryption, authentication, and anticounterfeiting technologies with high security, fast detection, and potential applications in security marking and information encryption on various substrates.
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Affiliation(s)
- Amin Abdollahi
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
| | - Hossein Roghani-Mamaqani
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, 51335-1996 Tabriz, Iran
| | - Bahareh Razavi
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
| | - Mehdi Salami-Kalajahi
- Faculty of Polymer Engineering, Sahand University of Technology, 51335-1996 Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, 51335-1996 Tabriz, Iran
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28
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Structural effects of dimensional nano-fillers on the properties of Sapium sebiferum oil-based polyurethane matrix: Experiments and molecular dynamics simulation. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122709] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Sun M, Zhang J, Tang D, Pan J, Kong X. Directed self-assembly structure of a diblock copolymer with homopolymer-grafted particles. MOLECULAR SIMULATION 2020. [DOI: 10.1080/08927022.2018.1496247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Minna Sun
- Department of Civil Engineering, Tsinghua University, Beijing, People's Republic of China
- School of Physics and Information Engineering, Shanxi Normal University, Linfen, People's Republic of China
| | - Jinjun Zhang
- School of Physics and Information Engineering, Shanxi Normal University, Linfen, People's Republic of China
| | - Dachun Tang
- School of Physics and Information Engineering, Shanxi Normal University, Linfen, People's Republic of China
| | - Junxing Pan
- School of Physics and Information Engineering, Shanxi Normal University, Linfen, People's Republic of China
| | - Xiangming Kong
- Department of Civil Engineering, Tsinghua University, Beijing, People's Republic of China
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30
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Gu J, Zhang R, Zhang L, Lin J. Harnessing Zone Annealing to Program Directional Motion of Nanoparticles in Diblock Copolymers: Creating Periodically Well-Ordered Nanocomposites. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00101] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jiabin Gu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Runrong Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Liangshun Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiaping Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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31
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Dong M, Song Y, Wang H, Su L, Shen Y, Tran DK, Letteri RA, Flores JA, Lin YN, Li J, Wooley KL. Degradable sugar-based magnetic hybrid nanoparticles for recovery of crude oil from aqueous environments. Polym Chem 2020. [DOI: 10.1039/d0py00029a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We designed and fabricated a sugar-based magnetic nanocomposite material that is capable of tackling environmental pollution posed by marine oil spills, while minimizing potential secondary problems that may occur from microplastic contamination.
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Affiliation(s)
- Mei Dong
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Yue Song
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Hai Wang
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Lu Su
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Yidan Shen
- Department of Materials Science & Engineering
- Texas A&M University
- College Station
- USA
| | - David K. Tran
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | | | | | - Yen-Nan Lin
- Department of Chemistry
- Texas A&M University
- College Station
- USA
- College of Medicine
| | - Jialuo Li
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Karen L. Wooley
- Department of Chemistry
- Texas A&M University
- College Station
- USA
- Department of Materials Science & Engineering
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32
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Dai X, Chen P, Zhu G, Xu Z, Zhang X, Yan LT. Entropy-Mediated Mechanomutable Microstructures and Mechanoresponsive Thermal Transport of Nanoparticle Self-Assembly in Block Copolymers. J Phys Chem Lett 2019; 10:7970-7979. [PMID: 31802675 DOI: 10.1021/acs.jpclett.9b03253] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Despite decades of intense research efforts on the self-assembly of nanoparticles in mesophase-forming copolymers, the progress in practical applications is impeded by the lack of knowledge about the dynamic transition of such hierarchical nanostructures in an environment bearing an external load. Here, we show that the hierarchical self-assembly of nanoparticles in block copolymer scaffolds can be made to significantly alternate by external compression, characterized by a continuous and reverse transition among various distribution states of nanoparticles in their preferential domains. Theoretical analysis reveals that compression-induced transition of the nanoparticle distribution can be fundamentally attributed to unique entropic effects originating from the compacted block chains. Further, we demonstrate that the hierarchical nanostructures with different distribution states of nanoparticles can lead to mechanomutable phonon transport properties. The findings reveal the mechanoresponsive behaviors of the hierarchical nanostructures of block copolymer-based nanocomposites and their potential applications as thermal interface materials with tailored thermal conductivity.
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Affiliation(s)
- Xiaobin Dai
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Pengyu Chen
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Guolong Zhu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Ziyang Xu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Xinghua Zhang
- School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
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33
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Yi C, Yang Y, Liu B, He J, Nie Z. Polymer-guided assembly of inorganic nanoparticles. Chem Soc Rev 2019; 49:465-508. [PMID: 31845685 DOI: 10.1039/c9cs00725c] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The self-assembly of inorganic nanoparticles is of great importance in realizing their enormous potentials for broad applications due to the advanced collective properties of nanoparticle ensembles. Various molecular ligands (e.g., small molecules, DNAs, proteins, and polymers) have been used to assist the organization of inorganic nanoparticles into functional structures at different hierarchical levels. Among others, polymers are particularly attractive for use in nanoparticle assembly, because of the complex architectures and rich functionalities of assembled structures enabled by polymers. Polymer-guided assembly of nanoparticles has emerged as a powerful route to fabricate functional materials with desired mechanical, optical, electronic or magnetic properties for a broad range of applications such as sensing, nanomedicine, catalysis, energy storage/conversion, data storage, electronics and photonics. In this review article, we summarize recent advances in the polymer-guided self-assembly of inorganic nanoparticles in both bulk thin films and solution, with an emphasis on the role of polymers in the assembly process and functions of resulting nanostructures. Precise control over the location/arrangement, interparticle interaction, and packing of inorganic nanoparticles at various scales are highlighted.
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Affiliation(s)
- Chenglin Yi
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China.
| | - Yiqun Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China.
| | - Ben Liu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, Jiangsu 210023, China and Department of Chemistry and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06268, USA.
| | - Jie He
- Department of Chemistry and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06268, USA.
| | - Zhihong Nie
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China.
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34
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Affiliation(s)
- F. Ruipérez
- POLYMAT, University of the Basque Country UPV/EHU, Donostia-San Sebastián, Spain
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35
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Abstract
We have developed a coarse-grained (CG) model of a polymer-clay system consisting of organically modified montmorillonite (oMMT) nanoclay as the nanoparticle in accordance with the MARTINI force field. We have used mechanical properties and cleavage free energy of the clay particle to respectively parameterize bonded and nonbonded interaction parameters for an oMMT clay particle, where intergallery Na+ ions are replaced by tetramethylammonium (TMA) ions. The mechanical properties were determined from the slope of the stress-strain curve and cleavage free energy was determined by allowing for full surface reconstruction corresponding to a slow equilibrium cleavage process. Individual dispersive and polar contributions to oMMT cleavage energy were used for determination of appropriate MARTINI bead types for the CG oMMT sheet. The self-consistency of the developed MARTINIFF parameters for the TMA-montmorillonite-polymer system was verified by comparing estimates for select structural, thermodynamic, and dynamic properties obtained in all-atomistic simulations with that obtained in CG simulations. We have determined the influence of clay particles on properties of three polymer melts (polyethylene, polypropylene, and polystyrene) at two temperatures to establish transferability of the developed parameters. We have also shown that the effect of clay-polymer interactions on structure-property relationships in the polymer-clay nanocomposite system is well captured by Rosenfeld's excess entropy scaling.
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Affiliation(s)
- Parvez Khan
- Department of Chemical Engineering , Indian Institute of Technology Delhi , New Delhi 110016 , India
| | - Gaurav Goel
- Department of Chemical Engineering , Indian Institute of Technology Delhi , New Delhi 110016 , India
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36
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Cao XZ, Merlitz H, Forest MG. Nanoparticle Loading of Unentangled Polymers Induces Entanglement-Like Relaxation Modes and a Broad Sol-Gel Transition. J Phys Chem Lett 2019; 10:4968-4973. [PMID: 31386385 DOI: 10.1021/acs.jpclett.9b01954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We combine molecular dynamics simulations, imaging and data analysis, and the Green-Kubo summation formula for the relaxation modulus G(t) to elicit the structure and rheology of unentangled polymer-nanoparticle composites distinguished by small NPs and strong NP-monomer attraction, εNPM ≫ kBT. A reptation-like plateau emerges in G(t) beyond a terminal relaxation time scale as the volume fraction, cNP, of NPs increases, coincident with a structure transition. A condensed phase of NP-aggregates forms, tightly interlaced with thin sheets of polymer chains, the remaining phase consisting of free chains void of NPs. Rouse mode analyses are applied to the two individual phases, revealing that long-wavelength Rouse modes in the aggregate phase are the source of reptation-like relaxation. Imaging reveals chain motion confined within the thin sheets between NPs and exhibits a 2D analogue of classical reptation. In the NP-free phase, Rouse modes relax indistinguishable from a neat polymer melt. The Fourier transform of G(t) reveals a sol-gel transition across a broad frequency spectrum, tuned by cNP and εNPM above critical thresholds, below which all structure and rheological transitions vanish.
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Affiliation(s)
- Xue-Zheng Cao
- Departments of Mathematics and Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3250, United States
- Department of Physics, Xiamen University, Xiamen 361005, P.R. China
| | - Holger Merlitz
- Leibniz-Institut für Polymerforschung Dresden, 01069 Dresden, Germany
| | - M Gregory Forest
- Departments of Mathematics and Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3250, United States
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37
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Berezkin AV, Kudryavtsev YV, Osipov MA. Phase Diagram of Rod-Coil Diblock Copolymers: Dissipative Particle Dynamics Simulation. POLYMER SCIENCE SERIES A 2019. [DOI: 10.1134/s0965545x19040023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Zhang Q, Gu J, Zhang L, Lin J. Diverse chiral assemblies of nanoparticles directed by achiral block copolymers via nanochannel confinement. NANOSCALE 2019; 11:474-484. [PMID: 30566160 DOI: 10.1039/c8nr07036a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
It is a challenging task to realize large-area manufacture of chiral geometries of nanoparticles in solid-state materials, which exhibit strongly chiroptical responses in the visible and near-infrared ranges. Herein, novel nanocomposites, made from mixtures of achiral block copolymers and nanoparticles in a geometrically confined environment, are conceptually proposed to construct the chiral assemblies of nanoparticles through a joint theoretical-calculation framework and experimental discussion. It is found that the nanochannel-confined block copolymers self-assemble into a family of intrinsically chiral architectures, which serve as structural scaffolds to direct the chiral arrangement of nanoparticles. Through calculations of chiral order parameters and simulations of discrete dipole approximation, it is further demonstrated that certain members of this family of nanoparticle assemblies exhibit intense chiroptical activity, which can be tailored by the nanochannel radius and the nanoparticle loading. These findings highlight the multiple levels of structural control over a class of chiral assemblies of nanoparticles and the functionalities of emerging materials via careful design and selection of nanocomposites.
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Affiliation(s)
- Qian Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
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39
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Yan T, Sun B, Barnard AS. Predicting archetypal nanoparticle shapes using a combination of thermodynamic theory and machine learning. NANOSCALE 2018; 10:21818-21826. [PMID: 30452032 DOI: 10.1039/c8nr07341d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Machine learning is a useful way of identifying representative or pure nanoparticle shapes as part of a larger ensemble, but its predictive capabilities can be limited when a large dataset of candidate structures must already exist. Ideally one would like to use machine learning to define the ideal dataset for future, more computationally intensive, studies before a significant amount of resources are consumed. In this work we combine an established analytical phenomenological model and statistical machine learning to predict the archetypes and prototypes of a diverse ensemble of 2380 platinum nanoparticle morphologies developed with less than twenty input electronic structure simulations. By parameterising a size- and shape-dependent thermodynamic model, probabilities are assigned to seventeen different shapes between three and thirty nanometres, which together with structural features such as nanoparticle diameter, surface area, sphericity and facet configuration form the basis for archetypal analysis and K-means clustering. Using this approach we rapidly identify six "pure" archetypes and twelve "representative" prototypes that can be used in future computational studies of properties such as catalysis.
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Affiliation(s)
- Tao Yan
- Molecular and Materials Modelling, Data61 CSIRO, Door 34 Goods Shed, Village St, Docklands, VIC 3008, Australia.
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40
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Yang Y, Chen P, Cao Y, Huang Z, Zhu G, Xu Z, Dai X, Chen S, Miao B, Yan LT. How Implementation of Entropy in Driving Structural Ordering of Nanoparticles Relates to Assembly Kinetics: Insight into Reaction-Induced Interfacial Assembly of Janus Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9477-9488. [PMID: 30016871 DOI: 10.1021/acs.langmuir.8b01378] [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
The ability to understand and exploit entropic contributions to ordering transition is of essential importance in the design of self-assembling systems with well-controlled structures. However, much less is known about the role of assembly kinetics in entropy-driven phase behaviors. Here, by combining computer simulations and theoretical analysis, we report that the implementation of entropy in driving phase transition significantly depends on the kinetic process in the reaction-induced self-assembly of newly designed nanoparticle systems. In particular, such systems comprise binary Janus nanoparticles at the fluid-fluid interface and undergo phase transition driven by entropy and controlled by the polymerization reaction initiated from the surfaces of just one component of nanoparticles. Our simulations demonstrate that the competition between the reaction rate and the diffusive dynamics of nanoparticles governs the implementation of entropy in driving the phase transition from randomly mixed phase to intercalated phase in these interfacial nanoparticle mixtures, which thereby results in diverse kinetic pathways. At low reaction rates, the transition exhibits abrupt jump in the mixing parameter, in a similar way to first-order, equilibrium phase transition. Increasing the reaction rate diminishes the jumps until the transitions become continuous, behaving as a second-order-like phase transition, where a critical exponent, characterizing the transition, can be identified. We finally develop an analytical model of the blob theory of polymer chains to complement the simulation results and reveal essential scaling laws of the entropy-driven phase behaviors. In effect, our results allow for further opportunities to amplify the entropic contributions to the materials design via kinetic control.
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Affiliation(s)
- Ye Yang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Pengyu Chen
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Yufei Cao
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Zihan Huang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Guolong Zhu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Ziyang Xu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Xiaobin Dai
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Shi Chen
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Bing Miao
- College of Materials Science and Opto-Electronic Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
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41
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Zhang L, Zhu L, Larson SR, Zhao Y, Wang X. Layer-by-layer assembly of nanorods on a microsphere via electrostatic interactions. SOFT MATTER 2018; 14:4541-4550. [PMID: 29749415 DOI: 10.1039/c8sm00062j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Combining coarse-grained molecular dynamics simulations and experiments, a systematic study on both the dynamics and equilibrium behavior of the layer-by-layer (LbL) assembly of charged nanorods (NRs) onto a charged microsphere (MS) via electrostatic interactions has been carried out. The adsorption of the first layer of NRs on the MS follows a growth-saturation dynamics. The adsorption rate is governed by a diffusion limited process when the NR concentration (CNR) is low, while the rate is independent of CNR when CNR is high. The equilibrium NR coverage on the microsphere is found to follow a Langmuir adsorption model. For multilayer LbL assembly, when CNR is low, the number (N) of NRs adsorbed onto the MS follows a linear relationship with the number of dips M; while when CNR is high, in each dip the MS surface is fully covered with NRs, and the N follows a quadratic relationship with M. Most simulation results have been confirmed by experiments using α-Fe2O3 NRs and magnetic microspheres modified by poly(diallyldimethylammonium chloride) and poly(styrenesulfonate, sodium salt). These findings provide useful guidelines for designing complex superparticles via charged building nanoblocks based on electrostatic interactions, and therefore open up a novel avenue to exploit the capability of self-assembled charged nanostructures for potential applications such as surface modifications, sensors, drug delivery vehicles, etc.
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Affiliation(s)
- Liuyang Zhang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
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42
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Song Q, Ji Y, Li S, Wang X, He L. Adsorption Behavior of Polymer Chain with Different Topology Structure at the Polymer-Nanoparticle Interface. Polymers (Basel) 2018; 10:polym10060590. [PMID: 30966624 PMCID: PMC6404055 DOI: 10.3390/polym10060590] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/21/2018] [Accepted: 05/25/2018] [Indexed: 12/01/2022] Open
Abstract
The effect of the polymer chain topology structure on the adsorption behavior in the polymer-nanoparticle (NP) interface is investigated by employing coarse-grained molecular dynamics simulations in various polymer-NP interaction and chain stiffness. At a weak polymer-NP interaction, ring chain with a closed topology structure has a slight priority to occupy the interfacial region than linear chain. At a strong polymer-NP interaction, the “middle” adsorption mechanism dominates the polymer local packing in the interface. As the increase of chain stiffness, an interesting transition from ring to linear chain preferential adsorption behavior occurs. The semiflexible linear chain squeezes ring chain out of the interfacial region by forming a helical structure and wrapping tightly the surface of NP. In particular, this selective adsorption behavior becomes more dramatic for the case of rigid-like chain, in which 3D tangent conformation of linear chain is absolutely prior to the 2D plane orbital structure of ring chain. The local packing and competitive adsorption behavior of bidisperse matrix in polymer-NP interface can be explained based on the adsorption mechanism of monodisperse (pure ring or linear) case. These investigations may provide some insights into polymer-NP interfacial adsorption behavior and guide the design of high-performance nanocomposites.
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Affiliation(s)
- Qingliang Song
- Department of Physics, Wenzhou University, Wenzhou 325035, China.
| | - Yongyun Ji
- Department of Physics, Wenzhou University, Wenzhou 325035, China.
| | - Shiben Li
- Department of Physics, Wenzhou University, Wenzhou 325035, China.
| | - Xianghong Wang
- Department of Physics, Wenzhou University, Wenzhou 325035, China.
| | - Linli He
- Department of Physics, Wenzhou University, Wenzhou 325035, China.
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43
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Osipov MA, Gorkunov MV, Berezkin AV, Kudryavtsev YV. Phase behavior and orientational ordering in block copolymers doped with anisotropic nanoparticles. Phys Rev E 2018; 97:042706. [PMID: 29758762 DOI: 10.1103/physreve.97.042706] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Indexed: 11/07/2022]
Abstract
A molecular field theory and coarse-grained computer simulations with dissipative particle dynamics have been used to study the spontaneous orientational ordering of anisotropic nanoparticles in the lamellar and hexagonal phases of diblock copolymers and the effect of nanoparticles on the phase behavior of these systems. Both the molecular theory and computer simulations indicate that strongly anisotropic nanoparticles are ordered orientationally mainly in the boundary region between the domains and the nematic order parameter possesses opposite signs in adjacent domains. The orientational order is induced by the boundary and by the interaction between nanoparticles and the monomer units in different domains. In simulations, sufficiently long and strongly selective nanoparticles are ordered also inside the domains. The nematic order parameter and local concentration profiles of nanoparticles have been calculated numerically using the model of a nanoparticle with two interaction centers and also determined using the results of computer simulations. A number of phase diagrams have been obtained which illustrate the effect of nanoparticle selectivity and molar fraction of the stability ranges of various phases. Different morphologies have been identified by analyzing the static structure factor and a phase diagram has been constructed in coordinates' nanoparticle concentration-copolymer composition. Orientational ordering of even a small fraction of nanoparticles may result in a significant increase of the dielectric anisotropy of a polymer nanocomposite, which is important for various applications.
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Affiliation(s)
- M A Osipov
- Department of Mathematics and Statistics, University of Strathclyde, Glasgow G1 1XH, Scotland, United Kingdom.,Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia
| | - M V Gorkunov
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics," Russian Academy of Sciences, 119333 Moscow, Russia
| | - A V Berezkin
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Y V Kudryavtsev
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia.,Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia
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44
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Liu S, Wang H, Akcora P. Ordering Polymer‐Grafted Nanoparticles at Oil–Air Interfaces under Magnetic Fields. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Siqi Liu
- Department of Chemical Engineering and Materials Science Castle Point on Hudson Stevens Institute of Technology Hoboken NJ 07030 USA
| | - Haoyu Wang
- Department of Chemical Engineering and Materials Science Castle Point on Hudson Stevens Institute of Technology Hoboken NJ 07030 USA
| | - Pinar Akcora
- Department of Chemical Engineering and Materials Science Castle Point on Hudson Stevens Institute of Technology Hoboken NJ 07030 USA
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45
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Zhu G, Huang Z, Xu Z, Yan LT. Tailoring Interfacial Nanoparticle Organization through Entropy. Acc Chem Res 2018; 51:900-909. [PMID: 29589915 DOI: 10.1021/acs.accounts.8b00001] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The ability to tailor the interfacial behaviors of nanoparticles (NPs) is crucial not only for the design of novel nanostructured materials with superior properties and of interest for many promising applications such as water purification, enhanced oil recovery, and innovative energy transduction, but also for a better insight into many biological systems where nanoscale particles such as proteins or viruses can interact and organize at certain interfaces. As a class of emerging building blocks, Janus NPs consisting of two compartments of different chemistry or polarity are ideal candidates to generate tunable and stable interfacial nanostructures because of the asymmetric nature. However, precise control over such interfacial nanostructures toward a controllable order and even responses to various external stimuli still remains a great challenge as the interfaces do not simply serve as a scaffold but rather induce complex enthalpic and entropic interactions. In this Account, we focus on our efforts on exploiting entropy strategies based on computational design to tailor the spatial distribution and ordering of NPs at the interfaces of various systems. First, we introduce the physical principle of entropic ordering, being the theoretical basis of entropy-directed interfacial self-assembly. The typical types of entropy, which have been harnessed to manipulate the interfacial NP organization, are then summarized, including conformational entropy, shape entropy, and rotational and vibrational entropy. Next, we describe the emerging pathways in the development of novel environmentally responsive systems which involve the use of entropy to access the stimuli-responsive behaviors of interfacial nanostructures. Taking one step further, how molecular architectures can be tailored to tune the entropic contributions to the interfacial self-assembly is demonstrated, through identifying the effects of various intrinsic properties of block segments, such as chain length and stiffness, on entropy-governed precise organization of Janus NPs at block copolymer interfaces. Finally, we detail some key factors for tailoring interfacial organization through entropy. In summary, entropy strategies offer a promising and abundant framework for precisely programming the structural organization of NPs at interfaces. We discuss future directions to signify the framework in tailoring the interfacial organization of NPs. We hope that this Account will promote further efforts toward fundamental research and the wide applications of designed interfacial assemblies in new types of functional nanomaterials and beyond.
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Affiliation(s)
- Guolong Zhu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Zihan Huang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Ziyang Xu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
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46
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Huang XW, Peng Y, Huang JH. Universal behaviors of polymer conformations in crowded environment. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4285-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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47
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Payne WM, Svechkarev D, Kyrychenko A, Mohs AM. The role of hydrophobic modification on hyaluronic acid dynamics and self-assembly. Carbohydr Polym 2018; 182:132-141. [PMID: 29279107 PMCID: PMC5748244 DOI: 10.1016/j.carbpol.2017.10.054] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/28/2017] [Accepted: 10/13/2017] [Indexed: 01/02/2023]
Abstract
The advent of nanomedicine has rejuvenated the need for increased understanding of the fundamental physicochemical properties of polymeric amphiphiles. Hyaluronic acid (HA) is a hydrophilic polysaccharide that is frequently conjugated to hydrophobic moieties and then used to entrap dyes and therapeutics. Here, we develop computational models to examine the effects of the hydrophobic modification on supramolecular behavior among three systematically designed HA derivatives substituted with alkyl chains of increasing length. Our simulations coalesce with experimentally obtained results to demonstrate the dependence of supramolecular behavior on intramolecular forces. We show that the formation of clearly defined hydrophobic domains in samples of octadecylamine-modified HA compared to HA conjugates with shorter alkyl chains is a result of more favorable hydrophobic interactions. Trends in hydrodynamic radius and polydispersity are observed in experimental results that coalesce with theoretical calculations, suggesting that supramolecular properties are dependent on the physicochemical characteristics of individual polymer strands.
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Affiliation(s)
- William M Payne
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States.
| | - Denis Svechkarev
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States.
| | - Alexander Kyrychenko
- Institute for Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Square, 61022 Kharkiv, Ukraine.
| | - Aaron M Mohs
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States; Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, 986858 Nebraska Medical Center, Omaha, NE 68198-6858, United States.
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48
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Preparation, analyses and application of cobalt–manganese oxides/nylon 6,6 nanocomposites. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2292-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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49
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50
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Gollanapalli V, Manthri A, Sankar UK, Tripathy M. Dispersion, Phase Separation, and Self-Assembly of Polymer-Grafted Nanorod Composites. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01754] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vaishnavi Gollanapalli
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076 Maharashtra, India
| | - Anirudh Manthri
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076 Maharashtra, India
| | - Uma K. Sankar
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076 Maharashtra, India
| | - Mukta Tripathy
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076 Maharashtra, India
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