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Wei Y, Cui S, Yu L, Ding J. Degradation-Influenced/Induced Self-Assembly of Copolymers with the Combinatory Effects of Changed Molecular Weight and Dispersity. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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2
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A Simple Stochastic Reaction Model for Heterogeneous Polymerizations. Polymers (Basel) 2022; 14:polym14163269. [PMID: 36015526 PMCID: PMC9414839 DOI: 10.3390/polym14163269] [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: 07/14/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 11/17/2022] Open
Abstract
The stochastic reaction model (SRM) treats polymerization as a pure probability‐based issue, which is widely applied to simulate various polymerization processes. However, in many studies, active centers were assumed to react with the same probability, which cannot reflect the heterogeneous reaction microenvironment in heterogeneous polymerizations. Recently, we have proposed a simple SRM, in which the reaction probability of an active center is directly determined by the local reaction microenvironment. In this paper, we compared this simple SRM with other SRMs by examining living polymerizations with randomly dispersed and spatially localized initiators. The results confirmed that the reaction microenvironment plays an important role in heterogeneous polymerizations. This simple SRM provides a good choice to simulate various polymerizations.
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Yang B, Liu S, Ma J, Yang Y, Li J, Jiang BP, Ji S, Shen XC. Monte Carlo Simulation of Surface-Initiated Polymerization: Heterogeneous Reaction Environment. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Bingbing Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Siwen Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jiashu Ma
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Yang Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jiahao Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Bang-Ping Jiang
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Shichen Ji
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xing-Can Shen
- State Key Laboratory for Chemistry and Molecular Engineering of Medical Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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Cui S, Yu L, Ding J. Strategy of “Block Blends” to Generate Polymeric Thermogels versus That of One-Component Block Copolymer. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02488] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Shuquan Cui
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
- Zhuhai Fudan Innovation Institute, Zhuhai Guangdong, 519000, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
- Zhuhai Fudan Innovation Institute, Zhuhai Guangdong, 519000, China
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5
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Cui S, Chen L, Yu L, Ding J. Synergism among Polydispersed Amphiphilic Block Copolymers Leading to Spontaneous Physical Hydrogelation upon Heating. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01430] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shuquan Cui
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Liang Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
- Zhuhai Fudan Innovation Institute, Zhuhai, Guangdong 519000, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
- Zhuhai Fudan Innovation Institute, Zhuhai, Guangdong 519000, China
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Xu D, Ni CY, Zhu YL, Lu ZY, Xue YH, Liu H. Kinetic step-growth polymerization: A dissipative particle dynamics simulation study. J Chem Phys 2018; 148:024901. [DOI: 10.1063/1.4999050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Dan Xu
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
| | - Chun-Yan Ni
- Department of Anesthesiology, Cancer Hospital of Jilin Province, Huguang Road, No. 1018, Changchun 130012, China
| | - You-Liang Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhong-Yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
| | - Yao-Hong Xue
- School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China
| | - Hong Liu
- State Key Laboratory of Supramolecular Structure and Materials, Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität, Darmstadt 64287, Germany
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Luan J, Cui S, Wang J, Shen W, Yu L, Ding J. Positional isomeric effects of coupling agents on the temperature-induced gelation of triblock copolymer aqueous solutions. Polym Chem 2017. [DOI: 10.1039/c7py00232g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The linking angles of positional isomers in the middle of thermogelling mPEG-PLGA-mPEG polymers were found to affect their microscopic conformations and macroscopic properties.
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Affiliation(s)
- Jiabin Luan
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Shuquan Cui
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Juntao Wang
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Wenjia Shen
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
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8
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Liu H, Zhu YL, Lu ZY, Müller-Plathe F. A kinetic chain growth algorithm in coarse-grained simulations. J Comput Chem 2016; 37:2634-2646. [DOI: 10.1002/jcc.24495] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 09/04/2016] [Accepted: 09/07/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Hong Liu
- State Key Laboratory of Supramolecular Structure and Materials; Institute of Theoretical Chemistry, Jilin University; Changchun 130021 China
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität; Darmstadt 64287 Deutschland
| | - You-Liang Zhu
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Zhong-Yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials; Institute of Theoretical Chemistry, Jilin University; Changchun 130021 China
| | - Florian Müller-Plathe
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität; Darmstadt 64287 Deutschland
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9
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Liu J, Ma Y, Wu R, Yu M. Molecular simulation of diffusion-controlled kinetics in stepwise polymerization. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.05.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ghelichi M, Qazvini NT. Self-organization of hydrophobic-capped triblock copolymers with a polyelectrolyte midblock: a coarse-grained molecular dynamics simulation study. SOFT MATTER 2016; 12:4611-4620. [PMID: 27116478 DOI: 10.1039/c6sm00414h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present the results of a Langevin dynamics simulation study of micellar organization and hydrogel formation in the solutions of coarse-grained ABA copolymer chains. Polymer chains are modeled as bead-spring chains of Lennard-Jones particles by explicit treatment of ionic species in implicit solvent. The studied copolymer is composed of a polyelectrolyte midblock flanked by two hydrophobic endblocks. We explore the self-assembly of copolymer solutions at a fixed polymer concentration and temperature upon systematic variation of the midblock charge fraction, valency of neutralizing counterions, and the stiffness and length of hydrophobic endblocks. Minimization of the surface energy, conformational entropy of the midblock chains, electrostatic repulsion of midblock charges, and the translational entropy of counterions are found to play central roles in controlling the self-organization features of copolymer solutions. Flower-like micelles with A-blocks forming the core of spherical aggregates and B-blocks constituting the micelle corona are established for the neutral midblocks. Increasing the charge content of B chains lowers the fraction of loop conformations and yields a spanning hydrogel network with midblocks bridging the hydrophobic clusters. Counterion valence is shown to exert a strong effect on the micelle size and network structure. The increase in the rigidity of terminal A-blocks increases the fraction of bridging chains and results in the formation of a hydrogel network with bundle-like hydrophobic domains. Longer endblocks are shown to increase the hydrophobic cluster size and enhance the bridged midblock fraction. The qualitative agreement between the experimental and theoretical studies is also discussed. The comprehensive molecular picture provides a framework for the future studies of stimuli-responsive copolymer systems.
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Affiliation(s)
- Mahdi Ghelichi
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.
| | - Nader Taheri Qazvini
- Polymer Division, School of Chemistry, College of Science, University of Tehran, P. O. Box 14155-6455, Tehran, Iran and Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA.
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12
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Chen L, Ci T, Li T, Yu L, Ding J. Effects of Molecular Weight Distribution of Amphiphilic Block Copolymers on Their Solubility, Micellization, and Temperature-Induced Sol–Gel Transition in Water. Macromolecules 2014. [DOI: 10.1021/ma501110p] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Liang Chen
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Tianyuan Ci
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Ting Li
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Lin Yu
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
| | - Jiandong Ding
- State Key Laboratory of Molecular
Engineering of Polymers, Department of Macromolecular Science, Advanced
Materials Laboratory, Fudan University, Shanghai 200433, China
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Yao X, Peng R, Ding J. Cell-material interactions revealed via material techniques of surface patterning. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5257-5286. [PMID: 24038153 DOI: 10.1002/adma.201301762] [Citation(s) in RCA: 358] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/15/2013] [Indexed: 06/02/2023]
Abstract
Cell-material interactions constitute a key fundamental topic in biomaterials study. Various cell cues and matrix cues as well as soluble factors regulate cell behaviors on materials. These factors are coupled with each other as usual, and thus it is very difficult to unambiguously elucidate the role of each regulator. The recently developed material techniques of surface patterning afford unique ways to reveal the underlying science. This paper reviews the pertinent material techniques to fabricate patterns of microscale and nanoscale resolutions, and corresponding cell studies. Some issues are emphasized, such as cell localization on patterned surfaces of chemical contrast, and effects of cell shape, cell size, cell-cell contact, and seeding density on differentiation of stem cells. Material cues to regulate cell adhesion, cell differentiation and other cell events are further summed up. Effects of some physical properties, such as surface topography and matrix stiffness, on cell behaviors are also discussed; nanoscaled features of substrate surfaces to regulate cell fate are summarized as well. The pertinent work sheds new insight into the cell-material interactions, and is stimulating for biomaterial design in regenerative medicine, tissue engineering, and high-throughput detection, diagnosis, and drug screening.
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Affiliation(s)
- Xiang Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, 200433, Shanghai, China
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Jiang T, Wang L, Lin J. Mechanical properties of designed multicompartment gels formed by ABC graft copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:12298-12306. [PMID: 24011339 DOI: 10.1021/la403098p] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In the present work, we designed a multicompartment gel by taking advantage of the ABC graft copolymer with a solvophilic A backbone and solvophobic B and C grafts. The mechanical properties of such designed gels were investigated by a combination of dissipative particle dynamics simulation and a nonequilibrium deformation technique. The extensional moduli of multicompartment gels were found to be dependent on polymer concentration and architectural parameters of the graft copolymers (the sequence of graft arms and the position of the graft points). The graft copolymer solutions undergo a sol-gel transition as the polymer concentration increases. This leads to an abrupt increase in the extensional modulus. The studies also revealed that the multicompartment gels of graft copolymers exhibit higher extensional moduli than those of nonmulticompartment gels of graft copolymers and triblock copolymer gels. The position of graft points plays another important role in determining the extensional moduli of the multicompartment gels. The effects of graft positions on the gel modulus were found to be associated with the bridging fraction of graft copolymer chains. The results gained through the present work may provide useful guidance for designing high-performance gels.
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Affiliation(s)
- Tao Jiang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, State Key Laboratory of Bioreactor Engineering, School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, People's Republic of China
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LIGHT-DRIVEN PROTON PUMPS OF ARCHAERHODOPSIN AND BACTERIORHODOPSIN AND POLYMER-MATRIX COMPOSITE MATERIALS OF THOSE FUNCTIONAL PROTEINS. ACTA POLYM SIN 2012. [DOI: 10.3724/sp.j.1105.2012.12051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wu R, Li T, Nies E. Langevin Dynamics Simulation of Chain Crosslinking into Polymer Networks. MACROMOL THEOR SIMUL 2012. [DOI: 10.1002/mats.201100088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Moon HJ, Ko DY, Park MH, Joo MK, Jeong B. Temperature-responsive compounds as in situ gelling biomedical materials. Chem Soc Rev 2012; 41:4860-83. [DOI: 10.1039/c2cs35078e] [Citation(s) in RCA: 334] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Yang X, Wang L, He X. Kinetics of nonideal hyperbranched A2 + B3 polycondensation: Simulation and comparison with experiments. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24305] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
A concentrated fish soup could be gelled in the winter and re-solled upon heating. In contrast, some synthetic copolymers exhibit an inverse sol-gel transition with spontaneous physical gelation upon heating instead of cooling. If the transition in water takes place below the body temperature and the chemicals are biocompatible and biodegradable, such gelling behavior makes the associated physical gels injectable biomaterials with unique applications in drug delivery and tissue engineering etc. Various therapeutic agents or cells can be entrapped in situ and form a depot merely by a syringe injection of their aqueous solutions at target sites with minimal invasiveness and pain. This tutorial review summarizes and comments on this soft matter, especially thermogelling poly(ethylene glycol)-(biodegradable polyester) block copolymers. The main types of injectable hydrogels are also briefly introduced, including both physical gels and chemical gels.
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Affiliation(s)
- Lin Yu
- Department of Macromolecular Science, Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Advanced Materials Laboratory, Fudan University, Shanghai, China
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Yang Z, Ding J. A Thermosensitive and Biodegradable Physical Gel with Chemically Crosslinked Nanogels as the Building Block. Macromol Rapid Commun 2008. [DOI: 10.1002/marc.200700872] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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