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Han Y, Lu Y, Song T, Cui J, Fan J. Topology-Directed Coassembly of Linear and Cyclic Amphiphilic Diblock Copolymers: A Monte Carlo Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:16103-16112. [PMID: 39054962 DOI: 10.1021/acs.langmuir.4c00988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
The self-assembly behaviors of the mixtures composed of linear and cyclic AB diblock copolymers in A-selective solvents are investigated by means of Monte Carlo simulation. The simulation results indicate that a typical morphological transition of the aggregate from sphere to cylinder, to lamella, and then to vesicle can be achieved via solely adjusting the molar fraction of the cyclic diblock copolymers in the mixture. Furthermore, the simulation results show that under the condition that the pure cyclic and linear diblock copolymers can both form vesicles, the structure characteristics (e.g., the inner radius and hydrophobic membrane thickness of the vesicle) and the formation pathway of the vesicles formed by the mixtures can also be regulated via solely changing the molar fraction of the cyclic diblock copolymers in the mixture. It is worth noting that the inner radius of the vesicle can be considerably increased by increasing the molar fraction of the cyclic diblock copolymers in the mixture, which results in a remarkable increase in the inner capacity of the vesicle. This phenomenon has a unique significance in the field of drug delivery. Our simulation works can provide a new approach to the preparation of polymer materials with novel properties and functions.
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Affiliation(s)
- Yuanyuan Han
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Yaning Lu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Tongjing Song
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Jie Cui
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, P. R. China
| | - Juanjuan Fan
- College of Information Technology, Jilin Agricultural University, Changchun 130118, P. R. China
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2
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Salminen L, Karjalainen E, Aseyev V, Tenhu H. Phase Separation of Aqueous Poly(diisopropylaminoethyl methacrylate) upon Heating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5135-5148. [PMID: 34752116 PMCID: PMC9069861 DOI: 10.1021/acs.langmuir.1c02224] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Poly(diisopropylaminoethyl methacrylate) (PDPA) is a pH- and thermally responsive water-soluble polymer. This study deepens the understanding of its phase separation behavior upon heating. Phase separation upon heating was investigated in salt solutions of varying pH and ionic strength. The effect of the counterion on the phase transition upon heating is clearly demonstrated for chloride-, phosphate-, and citrate-anions. Phase separation did not occur in pure water. The buffer solutions exhibited similar cloud points, but phase separation occurred in different pH ranges and with different mechanisms. The solution behavior of a block copolymer comprising poly(dimethylaminoethyl methacrylate) (PDMAEMA) and PDPA was investigated. Since the PDMAEMA and PDPA blocks phase separate within different pH- and temperature ranges, the block copolymer forms micelle-like structures at high temperature or pH.
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Affiliation(s)
- Linda Salminen
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Erno Karjalainen
- VTT
Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT Espoo, Finland
| | - Vladimir Aseyev
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
| | - Heikki Tenhu
- Department
of Chemistry, University of Helsinki, P.O. Box 55, A.I. Virtasen aukio
1, FIN-00014 HY Helsinki, Finland
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3
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Watanabe T, Wang Y, Ono T, Chimura S, Isono T, Tajima K, Satoh T, Sato SI, Ida D, Yamamoto T. Topology and Sequence-Dependent Micellization and Phase Separation of Pluronic L35, L64, 10R5, and 17R4: Effects of Cyclization and the Chain Ends. Polymers (Basel) 2022; 14:1823. [PMID: 35566993 PMCID: PMC9105568 DOI: 10.3390/polym14091823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022] Open
Abstract
The topology effects of cyclization on thermal phase transition behaviors were investigated for a series of amphiphilic Pluronic copolymers of both hydrophilic-hydrophobic-hydrophilic and hydrophobic-hydrophilic-hydrophobic block sequences. The dye solubilization measurements revealed the lowered critical micelle temperatures (TCMT) along with the decreased micellization enthalpy (ΔHmic) and entropy (ΔSmic) for the cyclized species. Furthermore, the transmittance and dynamic light scattering (DLS) measurements indicated a block sequence-dependent effect on the clouding phenomena, where a profound decrease in cloud point (Tc) was only found for the copolymers with a hydrophilic-hydrophobic-hydrophilic block sequence. Thus, the effect of cyclization on these critical temperatures was manifested differently depending on its block sequence. Finally, a comparison of the linear hydroxy-terminated, methoxy-terminated, and cyclized species indicated the effect of cyclization to be unique from a simple elimination of the terminal hydrophilic moieties.
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Affiliation(s)
- Tomohisa Watanabe
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.W.); (Y.W.); (S.C.)
| | - Yubo Wang
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.W.); (Y.W.); (S.C.)
| | - Tomoko Ono
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.O.); (T.I.); (K.T.); (T.S.); (S.S.)
| | - Satoru Chimura
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.W.); (Y.W.); (S.C.)
| | - Takuya Isono
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.O.); (T.I.); (K.T.); (T.S.); (S.S.)
| | - Kenji Tajima
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.O.); (T.I.); (K.T.); (T.S.); (S.S.)
| | - Toshifumi Satoh
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.O.); (T.I.); (K.T.); (T.S.); (S.S.)
| | - Shin-ichiro Sato
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.O.); (T.I.); (K.T.); (T.S.); (S.S.)
| | - Daichi Ida
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura 615-8510, Kyoto, Japan;
| | - Takuya Yamamoto
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Hokkaido, Japan; (T.O.); (T.I.); (K.T.); (T.S.); (S.S.)
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4
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Zhou J, Yang J, Ishaq MW, Li L. Study of Linear and Cyclic Graft Polystyrenes with Identical Backbone Contour in Dilute Solutions: Preparation, Characterization, and Conformational Properties. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02029] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jianing Zhou
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, China
- Food Science and Processing Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jinxian Yang
- Food Science and Processing Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Muhammad Waqas Ishaq
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Lianwei Li
- Food Science and Processing Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
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Effect of the macromolecular architecture on the thermoresponsive behavior of poly(N-isopropylacrylamide) in copolymers with poly(N,N-dimethylacrylamide) in aqueous solutions: Block vs random copolymers. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Narumi A, Sato SI, Shen X, Kakuchi T. Precision synthesis for well-defined linear and/or architecturally controlled thermoresponsive poly(N-substituted acrylamide)s. Polym Chem 2022. [DOI: 10.1039/d1py01449h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the progress in precision polymerizations of specific kinds of N-alkylacrylamides and N,N-dialkylacrylamides to produce polymers showing thermoresponsive properties in aqueous media, which representatively include the reversible-deactivation radical polymerizations...
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Thermoresponsive Molecular Brushes with a Rigid-Chain Aromatic Polyester Backbone and Poly-2-alkyl-2-oxazoline Side Chains. Int J Mol Sci 2021; 22:ijms222212265. [PMID: 34830139 PMCID: PMC8622345 DOI: 10.3390/ijms222212265] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 02/07/2023] Open
Abstract
A new polycondensation aromatic rigid-chain polyester macroinitiator was synthesized and used to graft linear poly-2-ethyl-2-oxazoline as well as poly-2-isopropyl-2-oxazoline by cationic polymerization. The prepared copolymers and the macroinitiator were characterized by NMR, GPC, AFM, turbidimetry, static, and dynamic light scattering. The molar masses of the polyester main chain and the grafted copolymers with poly-2-ethyl-2-oxazoline and poly-2-isopropyl-2-oxazoline side chains were 26,500, 208,000, and 67,900, respectively. The molar masses of the side chains of poly-2-ethyl-2-oxazoline and poly-2-isopropyl-2-oxazoline and their grafting densities were 7400 and 3400 and 0.53 and 0.27, respectively. In chloroform, the copolymers conformation can be considered as a cylinder wormlike chain, the diameter of which depends on the side chain length. In water at low temperatures, the macromolecules of the poly-2-ethyl-2-oxazoline copolymer assume a wormlike conformation because their backbones are well shielded by side chains, whereas the copolymer with short side chains and low grafting density strongly aggregates, which was visualized by AFM. The phase separation temperatures of the copolymers were lower than those of linear analogs of the side chains and decreased with the concentration for both samples. The LCST were estimated to be around 45 °C for the poly-2-ethyl-2-oxazoline graft copolymer, and below 20 °C for the poly-2-isopropyl-2-oxazoline graft copolymer.
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8
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Zhang J, Li S, Wang Z, Liu P, Zhao Y. Multitunable Thermoresponsive and Aggregation Behaviors of Linear and Cyclic Polyacrylamide Copolymers Comprising Heterofunctional Y Junctions. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00794] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jian Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Siyu Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhigang Wang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Peng Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Youliang Zhao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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9
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Kirila T, Amirova A, Blokhin A, Tenkovtsev A, Filippov A. Features of Solution Behavior of Polymer Stars with Arms of Poly-2-alkyl-2-oxazolines Copolymers Grafted to the Upper Rim of Calix[8]arene. Polymers (Basel) 2021; 13:2507. [PMID: 34372110 PMCID: PMC8348004 DOI: 10.3390/polym13152507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/16/2021] [Accepted: 07/26/2021] [Indexed: 01/21/2023] Open
Abstract
Star-shaped polymers with arms of block and gradient copolymers of 2-ethyl- and 2-isopropyl-2-oxazolines grafted to the upper rim of calix[8]arene were synthesized by the "grafting from" method. The ratio of 2-ethyl- and 2-isopropyl-2-oxazoline units was 1:1. Molar masses and hydrodynamic characteristics were measured using molecular hydrodynamics and optics methods in 2-nitropropane. The arms of the synthesized stars were short and the star-shaped macromolecules were characterized by compact dimensions and heightened intramolecular density. The influence of the arm structure on the conformation of star molecules was not observed. At low temperatures, the aqueous solutions of the studied stars were not molecular dispersed but individual molecules prevailed. One phase transition was detected for all solutions. The phase separation temperatures decreased with a growth of the content of more hydrophobic 2-isopropyl-2-oxazoline units. It was shown that the way of arms grafting to the calix[8]arene core affects the behavior of aqueous solutions of star-shaped poly-2-alkyl-2-oxazoline copolymers. In the case of upper rim functionalization, the shape of calix[8]arene resembles a plate. Accordingly, the core is less shielded from the solvent and the phase separation temperatures are lower than those for star-shaped poly-2-alkyl-2-oxazolines with lower rim functionalization of the calix[8]arene.
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Affiliation(s)
- Tatyana Kirila
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy Pr. 31, 199004 Saint Petersburg, Russia; (A.A.); (A.B.); (A.T.); (A.F.)
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10
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Wu Z, Zhang H, Liu C, Hong C. Phototunable Cloud Point Temperatures Stemming from Cyclic Topology: Synthesis and Thermal Phase Transition Behavior of Cyclic Poly(N-acryloylsarcosine methyl ester). Macromol Rapid Commun 2021; 42:e2100136. [PMID: 33963804 DOI: 10.1002/marc.202100136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/22/2021] [Indexed: 12/31/2022]
Abstract
Cyclic polymers possess distinct properties compared with their linear counterparts, such as smaller hydrodynamic volume, lower viscosity, and higher glass-transition temperature, etc. To explore the impact of the cyclic topology on the thermo-induced phase transition behavior of poly(N-acryloylsarcosine methyl ester) (PNASME), the anthracene-terminated telechelic PNASMEs are synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of monomer NASME using a bifunctional chain transfer agent (CTA) with two anthryl groups. Subsequently, cyclic PNASMEs are prepared via UV-induced cyclization under 365 nm UV. There are considerable increases (up to 50 °C) for the cloud point temperatures (Tcp s) of cyclic PNASMEs compared with the linear counterparts. In view of the increment, the Tcp of PNASME is tuned by varying the cyclic/linear ratio (the molar ratio between cyclic PNASME and linear PNASME in the product) with different irradiation time.
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Affiliation(s)
- Zhigang Wu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Hualong Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Chao Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Chunyan Hong
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
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11
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Thermo- and pH-responsive copolymer of N-isopropylacrylamide with acryloylvaline: synthesis and properties in aqueous solutions. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02515-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Rodchenko S, Amirova A, Kurlykin M, Tenkovtsev A, Milenin S, Filippov A. Amphiphilic Molecular Brushes with Regular Polydimethylsiloxane Backbone and Poly-2-isopropyl-2-oxazoline Side Chains. 2. Self-Organization in Aqueous Solutions on Heating. Polymers (Basel) 2020; 13:E31. [PMID: 33374766 PMCID: PMC7796000 DOI: 10.3390/polym13010031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 01/18/2023] Open
Abstract
The behavior of amphiphilic molecular brushes in aqueous solutions on heating was studied by light scattering and turbidimetry. The main chain of the graft copolymers was polydimethylsiloxane, and the side chains were thermosensitive poly-2-isopropyl-2-oxazoline. The studied samples differed in the length of the grafted chains (polymerization degrees were 14 and 30) and, accordingly, in the molar fraction of the hydrophobic backbone. The grafting density of both samples was 0.6. At low temperatures, macromolecules and aggregates, which formed due to the interaction of main chains, were observed in solutions. At moderate temperatures, heating solutions of the sample with short side chains led to aggregation due to dehydration of poly-2-isopropyl-2-oxazoline and the formation of intermolecular hydrogen bonds. In the case of the brush with long grafted chains, dehydration caused the formation of intramolecular hydrogen bonds and the compaction of molecules and aggregates. The lower critical solution temperature for solutions of the sample with long side chains was higher than LCST for the sample with short side chains. It was shown that the molar fraction of the hydrophobic component and the intramolecular density are the important factors determining the LCST behavior of amphiphilic molecular brushes in aqueous solutions.
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Affiliation(s)
- Serafim Rodchenko
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Alina Amirova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Mikhail Kurlykin
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Andrey Tenkovtsev
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Sergey Milenin
- Enikolopov Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences, Profsoyuznaya, 70, 117393 Moscow, Russia;
| | - Alexander Filippov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
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13
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Yin F, Behra JS, Beija M, Brûlet A, Fitremann J, Payré B, Gineste S, Destarac M, Lauth-de Viguerie N, Marty JD. Effect of the microstructure of n-butyl acrylate/N-isopropylacrylamide copolymers on their thermo-responsiveness, self-organization and gel properties in water. J Colloid Interface Sci 2020; 578:685-697. [PMID: 32559484 DOI: 10.1016/j.jcis.2020.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/30/2020] [Accepted: 06/01/2020] [Indexed: 11/28/2022]
Abstract
HYPOTHESIS Polymer composition, microstructure, molar mass, architecture… critically affect the properties of thermoresponsive polymers in aqueous media. EXPERIMENTS The behaviour of n-isopropylacrylamide and n-butyl acrylate-based copolymers of variable composition and structure (statistical, diblock or triblock) was studied in solution at different temperatures and concentrations with turbidimetry measurements, differential scanning calorimetry, electronic microscopy, rheology and scattering experiments. FINDINGS This study illustrates how it is possible through chemical engineering of the microstructure of amphiphilic thermoresponsive polymers to modulate significantly the self-assembly, morphological and mechanical properties of these materials in aqueous media. Statistical structures induced a strong decrease of cloud point temperature compared to block structures with similar composition. Moreover, block structures lead below the transition temperature to the formation of colloidal structures. Above the transition temperature, the formation of colloidal aggregates is observed at low concentrations, and at higher concentrations the formation of gels. Neutron scattering and light scattering measurements show that for a given composition diblock structures lead to smaller colloids and mesoglobules than their triblock counterparts. Moreover, diblock structures, compared to triblock analogs, allow the formation of gels that do not demix with time (no synaeresis) but that are softer than triblock gels.
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Affiliation(s)
- Fang Yin
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Juliette S Behra
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Mariana Beija
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Annie Brûlet
- Université Paris-Saclay, CNRS, CEA, Laboratoire Léon Brillouin, CEA Saclay, F-91191 GIF/Yvette, France
| | - Juliette Fitremann
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Bruno Payré
- CMEAB, IFR-BMT, Université de Toulouse, 133 route de Narbonne, 31062 Toulouse, France
| | - Stéphane Gineste
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Mathias Destarac
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Nancy Lauth-de Viguerie
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France.
| | - Jean-Daniel Marty
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France.
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14
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Romio M, Trachsel L, Morgese G, Ramakrishna SN, Spencer ND, Benetti EM. Topological Polymer Chemistry Enters Materials Science: Expanding the Applicability of Cyclic Polymers. ACS Macro Lett 2020; 9:1024-1033. [PMID: 35648599 DOI: 10.1021/acsmacrolett.0c00358] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Polymer-topology effects can alter technologically relevant properties when cyclic macromolecules are applied within diverse materials formulations. These include coatings, polymer networks, or nanostructures for delivering therapeutics. While substituting linear building blocks with cyclic analogues in commonly studied materials is itself of fundamental interest, an even more fascinating observation has been that the introduction of physical or chemical boundaries (e.g., a grafting surface or cross-links) can amplify the topology-related effects observed when employing cyclic polymer-based precursors for assembling multidimensional objects. Hence, the application of cyclic polymers has enabled the fabrication of coatings with enhanced biorepellency and superior lubricity, broadened the tuning potential for mechanical properties of polymer networks, increased the thermodynamic stability, and altered the capability of loading and releasing drugs within polymeric micelles.
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Affiliation(s)
- Matteo Romio
- Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland
- Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Lucca Trachsel
- Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zürich, 8093 Zürich, Switzerland
| | - Giulia Morgese
- Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland
| | - Shivaprakash N. Ramakrishna
- Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland
| | - Nicholas D. Spencer
- Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland
| | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH Zürich), Vladimir-Prelog-Weg 5, 8093 Zurich, Switzerland
- Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
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15
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Liénard R, De Winter J, Coulembier O. Cyclic polymers: Advances in their synthesis, properties, and biomedical applications. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200236] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Romain Liénard
- Laboratory of Polymeric and Composite Materials (LPCM) Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons Mons Belgium
- Organic Synthesis and Mass Spectrometry Laboratory (S2MOs) Interdisciplinary Center for Mass Spectrometry (CISMa), University of Mons Mons Belgium
| | - Julien De Winter
- Organic Synthesis and Mass Spectrometry Laboratory (S2MOs) Interdisciplinary Center for Mass Spectrometry (CISMa), University of Mons Mons Belgium
| | - Olivier Coulembier
- Laboratory of Polymeric and Composite Materials (LPCM) Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons Mons Belgium
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16
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Amirova A, Kirila T, Kurlykin M, Tenkovtsev A, Filippov A. Influence of Cross-Linking Degree on Hydrodynamic Behavior and Stimulus-Sensitivity of Derivatives of Branched Polyethyleneimine. Polymers (Basel) 2020; 12:polym12051085. [PMID: 32397458 PMCID: PMC7284568 DOI: 10.3390/polym12051085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022] Open
Abstract
Cross-linked derivatives of acylated branched polyethyleneimine containing 2-isopropyl-2-oxazoline units were investigated in chloroform and aqueous solutions using methods of molecular hydrodynamics, static and dynamic light scattering, and turbidity. The studied samples differed by the cross-linker content. The solubility of the polyethyleneimines studied worsened with the increasing mole fraction of the cross-linker. Cross-linked polyethyleneimines were characterized by small dimensions in comparison with linear analogs; the increase in the cross-linker content leads to a growth of intramolecular density. At low temperatures, the aqueous solutions of investigated samples were molecularly dispersed, and the large aggregates were formed due to the dehydration of oxazoline units and the formation of intermolecular hydrogen bonds. For the cross-linked polyethyleneimines, the phase separation temperatures were lower than that for linear and star-shaped poly-2-isopropyl-2-oxazolines. The low critical solution temperature of the solutions of studied polymers decreased with the increasing cross-linker mole fraction. The time of establishment of the constant characteristics of the studied solutions after the jump-like change in temperature reaches 3000 s, which is at least two times longer than for linear polymers.
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17
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Li J, Mizutani S, Sato SI, Narumi A, Haba O, Kawaguchi S, Kikuchi M, Kakuchi T, Shen X. Thermoresponsive properties of poly(N-isopropyl,N-methylacrylamide) and its statistical and block copolymers with poly(N,N-dimethylacrylamide) prepared by B(C6F5)3-catalyzed group transfer polymerization. Polym Chem 2020. [DOI: 10.1039/d0py00015a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
B(C6F5)3-catalyzed GTP synthesis of poly(N-isopropyl,N-methylacrylamide) as a new thermoresponsive material.
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Affiliation(s)
- Jian Li
- Research Center for Polymer Materials
- School of Materials Science and Engineering
- Changchun University of Science and Technology
- Jilin
- China
| | - Shunsuke Mizutani
- Division of Applied Chemistry
- Faculty of Engineering
- Hokkaido University
- Sapporo
- Japan
| | - Shin-ichiro Sato
- Division of Applied Chemistry
- Faculty of Engineering
- Hokkaido University
- Sapporo
- Japan
| | - Atsushi Narumi
- Graduate School of Organic Materials Science
- Yamagata University
- Yonezawa
- Japan
| | - Osamu Haba
- Graduate School of Organic Materials Science
- Yamagata University
- Yonezawa
- Japan
| | - Seigou Kawaguchi
- Graduate School of Organic Materials Science
- Yamagata University
- Yonezawa
- Japan
| | | | - Toyoji Kakuchi
- Research Center for Polymer Materials
- School of Materials Science and Engineering
- Changchun University of Science and Technology
- Jilin
- China
| | - Xiande Shen
- Research Center for Polymer Materials
- School of Materials Science and Engineering
- Changchun University of Science and Technology
- Jilin
- China
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18
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Li J, Kikuchi S, Sato SI, Chen Y, Xu L, Song B, Duan Q, Wang Y, Kakuchi T, Shen X. Core-First Synthesis and Thermoresponsive Property of Three-, Four-, and Six-Arm Star-Shaped Poly(N,N-diethylacrylamide)s and Their Block Copolymers with Poly(N,N-dimethylacrylamide). Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01407] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jian Li
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | | | | | - Yougen Chen
- Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, Guangdong 518060, China
| | - Liang Xu
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Bo Song
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Qian Duan
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Yanqiu Wang
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Toyoji Kakuchi
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Xiande Shen
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
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19
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Nieuwenhuis S, Zhong Q, Metwalli E, Bießmann L, Philipp M, Miasnikova A, Laschewsky A, Papadakis CM, Cubitt R, Wang J, Müller-Buschbaum P. Hydration and Dehydration Kinetics: Comparison between Poly( N-isopropyl methacrylamide) and Poly(methoxy diethylene glycol acrylate) Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7691-7702. [PMID: 31117727 DOI: 10.1021/acs.langmuir.9b00535] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Thermoresponsive films of poly( N-isopropyl methacrylamide) (PNIPMAM) and poly(methoxy diethylene glycol acrylate) (PMDEGA) are compared with respect to their hydration and dehydration kinetics using in situ neutron reflectivity. Both as-prepared films present a homogeneous single-layer structure and have similar transition temperatures of the lower critical solution temperature type (TT, PNIPMAM 38 °C and PMDEGA 41 °C). After hydration in unsaturated D2O vapor at 23 °C, a D2O enrichment layer is observed in PNIPMAM films adjacent to the Si substrate. In contrast, two enrichment layers are present in PMDEGA films (close to the vapor interface and the Si substrate). PNIPMAM films exhibit a higher hydration capability, ascribed to having both donor (N-H) and acceptor (C═O) units for hydrogen bonds. While the swelling of the PMDEGA films is mainly caused by the increase of the enrichment layers, the thickness of the entire PNIPMAM films increases with time. The observed longer relaxation time for swelling of PNIPMAM films is attributed to the much higher glass transition temperature of PNIPMAM. When dehydrating both films by increasing the temperature above the TT, they react with a complex response consisting of three stages (shrinkage, rearrangement, and reswelling). PNIPMAM films respond faster than PMDEGA films. After dehydration, both films still contain a large amount of D2O, and no completely dry film state is reached for a temperature above their TTs.
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Affiliation(s)
- Sophie Nieuwenhuis
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education , Zhejiang Sci-Tech University , 310018 Hangzhou , China
| | - Qi Zhong
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education , Zhejiang Sci-Tech University , 310018 Hangzhou , China
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Ezzeldin Metwalli
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Lorenz Bießmann
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Martine Philipp
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Anna Miasnikova
- Universität Potsdam, Institut für Chemie , Karl-Liebknecht-Str. 24-25 , 14476 Potsdam-Golm , Germany
| | - André Laschewsky
- Universität Potsdam, Institut für Chemie , Karl-Liebknecht-Str. 24-25 , 14476 Potsdam-Golm , Germany
- Fraunhofer Institut für Angewandte Polymerforschung , Geiselbergstr. 69 , 14476 Potsdam-Golm , Germany
| | - Christine M Papadakis
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Robert Cubitt
- Institut Laue-Langevin , 6 rue Jules Horowitz , 38000 Grenoble , France
| | - Jiping Wang
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education , Zhejiang Sci-Tech University , 310018 Hangzhou , China
| | - Peter Müller-Buschbaum
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie , James-Franck-Str. 1 , 85748 Garching , Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München , Lichtenbergstr. 1 , 85748 Garching , Germany
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20
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Post-synthesis modification of thermo-responsive hydrogels: Hydrazone crosslinking of α-oxoaldehyde obtained from NIPAm-based polymers. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.01.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Hou Y, Guo Y, Qian S, Khan H, Han G, Zhang W. A new thermoresponsive polymer of poly(N-acetoxylethyl acrylamide). POLYMER 2019. [DOI: 10.1016/j.polymer.2019.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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22
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Song L, Lin J, Liu P, Li J, Jiang S, Huang D. Quantitative determination of the spring entropy effect and its indication of the conformational change of polymer coils with varying concentration in aqueous poly( N-isopropylamide) solutions. RSC Adv 2019; 9:5540-5549. [PMID: 35515908 PMCID: PMC9060781 DOI: 10.1039/c9ra00117d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 02/05/2019] [Indexed: 12/17/2022] Open
Abstract
The lower critical solution temperature (LCST) phase separation behaviors of thermosensitive poly(N-isopropylacrylamide) (PNIPAM) aqueous solutions were investigated by power-compensation differential scanning calorimetry (DSC). The entropic effect and hence the change of swelling state of PNIPAM polymer coils in homogeneous concentrated aqueous solutions with varied solution composition was elucidated by the isothermal enthalpy demixing recovery behaviors in distinct concentration regions.
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Affiliation(s)
- Li Song
- Department of Polymer Material Science and Engineering, Institution of Advanced Polymer Materials, School of Material Science and Engineering Tianjin University Tianjin 300350 China
| | - Jiaxiang Lin
- Department of Polymer Material Science and Engineering, Institution of Advanced Polymer Materials, School of Material Science and Engineering Tianjin University Tianjin 300350 China
| | - Panpan Liu
- Department of Polymer Material Science and Engineering, Institution of Advanced Polymer Materials, School of Material Science and Engineering Tianjin University Tianjin 300350 China
| | - Jingqing Li
- Department of Polymer Material Science and Engineering, Institution of Advanced Polymer Materials, School of Material Science and Engineering Tianjin University Tianjin 300350 China
| | - Shichun Jiang
- Department of Polymer Material Science and Engineering, Institution of Advanced Polymer Materials, School of Material Science and Engineering Tianjin University Tianjin 300350 China
| | - Dinghai Huang
- Department of Polymer Material Science and Engineering, Institution of Advanced Polymer Materials, School of Material Science and Engineering Tianjin University Tianjin 300350 China
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23
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Niebuur BJ, Chiappisi L, Zhang X, Jung F, Schulte A, Papadakis CM. Formation and Growth of Mesoglobules in Aqueous Poly( N-isopropylacrylamide) Solutions Revealed with Kinetic Small-Angle Neutron Scattering and Fast Pressure Jumps. ACS Macro Lett 2018; 7:1155-1160. [PMID: 35651267 DOI: 10.1021/acsmacrolett.8b00605] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The phase transition from swollen chains to polymer mesoglobules of an aqueous solution of poly(N-isopropylacrylamide) is investigated with kinetic small-angle neutron scattering with 50 ms time resolution in conjunction with millisecond pressure jumps across the coexistence line. The time-resolved study evidenced three distinct regimes: fractal clusters form during the first second and transform into compact mesoglobules. During the following ∼20 s, these grow by diffusion-limited coalescence. The final step consists of a slow growth characterized by an energy barrier of several kBT. The method opens opportunities for kinetic structural studies of multicomponent systems over wide length and time scales and gives a structural picture spanning from the chain collapse to mesoscopic phase separation.
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Affiliation(s)
- Bart-Jan Niebuur
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Leonardo Chiappisi
- Institut Laue-Langevin, Large Scale Structures Group, 6, rue Jules Horowitz, 38042 Grenoble, France
- Technische Universität Berlin, Stranski Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie, Straße des 17. Juni 124, Sekr. TC7, D-10623 Berlin, Germany
| | - Xiaohan Zhang
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Florian Jung
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
| | - Christine M. Papadakis
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
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24
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Liu G, Hu J, Liu S. Emerging Applications of Fluorogenic and Non-fluorogenic Bifunctional Linkers. Chemistry 2018; 24:16484-16505. [PMID: 29893499 DOI: 10.1002/chem.201801290] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Indexed: 01/06/2023]
Abstract
Homo- and hetero-bifunctional linkers play vital roles in constructing a variety of functional systems, ranging from protein bioconjugates with drugs and functional agents, to surface modification of nanoparticles and living cells, and to the cyclization/dimerization of synthetic polymers and biomolecules. Conventional approaches for assaying conjugation extents typically rely on ex situ techniques, such as mass spectrometry, gel electrophoresis, and size-exclusion chromatography. If the conjugation process involving bifunctional linkers was rendered fluorogenic, then in situ monitoring, quantification, and optical tracking/visualization of relevant processes would be achieved. In this review, conventional non-fluorogenic linkers are first discussed. Then the focus is on the evolution and emerging applications of fluorogenic bifunctional linkers, which are categorized into hetero-bifunctional single-caging fluorogenic linkers, homo-bifunctional double-caging fluorogenic linkers, and hetero-bifunctional double-caging fluorogenic linkers. In addition, stimuli-cleavable bifunctional linkers designed for both conjugation and subsequent site-specific triggered release are also summarized.
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Affiliation(s)
- Guhuan Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the MicroscaleiChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the MicroscaleiChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the MicroscaleiChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
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25
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Thermo- and pH-responsive phase separation of N-isopropylacrylamide with 4-vinylpyridine random copolymer in aqueous solutions. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4269-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Cao M, Han G, Duan W, Zhang W. Synthesis of multi-arm star thermo-responsive polymers and topology effects on phase transition. Polym Chem 2018. [DOI: 10.1039/c8py00422f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Linear and star thermo-responsive polymers of poly(N-acryloylsarcosine methyl ester) [(PNASME)n] and poly(N-isopropylacrylamide) [(PNIPAM)n] with arm number n = 1, 2, 3 and 4 were synthesized following a core-first method via solution RAFT polymerization employing a series of mono- and multi-functional chain transfer agents.
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Affiliation(s)
- Mengjiao Cao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Guang Han
- State Key Laboratory of Special Functional Waterproof Materials
- Beijing Oriental Yuhong Waterproof Technology Co
- Ltd
- Beijing 100123
- China
| | - Wenfeng Duan
- State Key Laboratory of Special Functional Waterproof Materials
- Beijing Oriental Yuhong Waterproof Technology Co
- Ltd
- Beijing 100123
- China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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27
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Wang B, Xiao T, Fu XB, Jiang TT, Chen Y, Yao YF. Thermoresponsive Hyperbranched Polymers with Spatially Isomerized Groups: NMR Implication to Their Thermoresponsive Behaviors. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01887] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bin Wang
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300354, P. R. China
| | - Ting Xiao
- Department of Physics & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, P. R. China
| | - Xiao-Bin Fu
- Department of Physics & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, P. R. China
| | - Ting-Ting Jiang
- Department of Physics & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, P. R. China
| | - Yu Chen
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300354, P. R. China
- Tianjin
Engineering Technology Center of Chemical Wastewater Source Reduction
and Recycling, School of Science, Tianjin Chengjian University, Tianjin 300384, P. R. China
| | - Ye-Feng Yao
- Department of Physics & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, P. R. China
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28
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Zhang Y, Wang RC, Liu HJ, Chen Y. Hyperbranched polyglycerol derivatives exhibiting normal or abnormal thermoresponsive behaviours in water: facile preparation and investigation by turbidimetry and fluorescence techniques. SOFT MATTER 2017; 13:8136-8143. [PMID: 29075702 DOI: 10.1039/c7sm01862b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polymers exhibiting an abnormal thermoresponsive behaviour, in which increase in the polymer concentration in water leads to an increase in the phase transition temperature, are few, and no plausible strategy has been addressed to prepare these polymers. For illuminating a feasible common strategy to prepare polymers with an abnormal thermoresponsive behaviour, in this study, we systematically prepared a series of hyperbranched polyglycerol (HPG) derivatives through a facile esterification reaction between HPG and aliphatic acids having different carbon numbers (X). Turbidimetry measurements demonstrate that thermoresponsive HPGs can be obtained only when HPGs are conjugated with aliphatic units of X ≤ 8. The conjugation of HPG with aliphatic units of X ≤ 4 resulted in thermoresponsive HPGs with a normal thermoresponsive behaviour. For the preparation of thermoresponsive HPGs with an abnormal thermoresponsive behaviour, X should be controlled in the range of 5-8. Fluorescence measurements with nile red as the fluorescent probe demonstrate that the existence of relatively strong hydrophobic interaction is a key factor to ensure that the polymer exhibits an abnormal thermoresponsive behaviour in water. Moreover, turbidimetry and fluorescence techniques are complementary for measuring the phase transition behaviour and suitable for different polymer concentration regions.
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Affiliation(s)
- Yao Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300354, P. R. China.
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29
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Lee YR, Park D, Choi SK, Kim M, Baek HS, Nam J, Chung CB, Osuji CO, Kim JW. Smart Cellulose Nanofluids Produced by Tunable Hydrophobic Association of Polymer-Grafted Cellulose Nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31095-31101. [PMID: 28816429 DOI: 10.1021/acsami.7b08783] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cellulose fibrils, unique plant-derived semicrystalline nanomaterials with exceptional mechanical properties, have significant potential for rheology modification of complex fluids due to their ability to form a physically associated semiflexible fibrillary network. Here, we report new associative cellulose nanocrystals (ACNCs) with stress-responsive rheological behaviors in an aqueous solution. The surface-mediated living radical polymerization was employed to graft poly(stearyl methacrylate-co-2-methacryloxyethyl phosphorylcholine) brushes onto the nanofibrils, and then 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation was conducted to produce nanoscale ACNCs in the aqueous solution. The ACNCs displayed interfibril association driven by the hydrophobic interaction that resulted in the formation of a nanofibrillar crystalline gel phase. We observed that the viscosity of the ACNC fluid showed reversible shear thinning and temperature-induced thickening in response to applied shear stress and thermal shock. Moreover, thanks to generation of a mechanically robust nanofibrillar crystalline gel network, the ACNC suspension showed extraordinary stability to changes in salinity and pH. These results highlighted that the interfibril hydrophobic association of ACNCs was vital and played an essential role in regulation of stimuli-responsive sol-gel transitions.
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Affiliation(s)
- Yea Ram Lee
- Department of Bionano Technology, Hanyang University , Ansan 15588, Republic of Korea
| | - Daehwan Park
- Department of Bionano Technology, Hanyang University , Ansan 15588, Republic of Korea
| | - Sang Koo Choi
- Department of Bionano Technology, Hanyang University , Ansan 15588, Republic of Korea
| | - Miju Kim
- Amore-Pacific R&D Centre , Yongin 17074, Republic of Korea
| | - Heung Soo Baek
- Amore-Pacific R&D Centre , Yongin 17074, Republic of Korea
| | - Jin Nam
- Amore-Pacific R&D Centre , Yongin 17074, Republic of Korea
| | - Chan Bok Chung
- SK Bioland R&D Co. Ltd. , Osong 28162, Republic of Korea
| | - Chinedum O Osuji
- Department of Chemical and Environmental Engineering, Yale University , New Haven, Connecticut 06511, United States
| | - Jin Woong Kim
- Department of Bionano Technology, Hanyang University , Ansan 15588, Republic of Korea
- Department of Chemical and Molecular Engineering, Hanyang University , Ansan 15588, Republic of Korea
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30
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Benetti EM, Divandari M, Ramakrishna SN, Morgese G, Yan W, Trachsel L. Loops and Cycles at Surfaces: The Unique Properties of Topological Polymer Brushes. Chemistry 2017; 23:12433-12442. [DOI: 10.1002/chem.201701940] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Edmondo M. Benetti
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
- Department of Materials Science and Technology of Polymers; MESA+ Institute for Nanotechnology; University of Twente, P.O. Box 217; 7500 AE Enschede The Netherlands
| | - Mohammad Divandari
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
| | | | - Giulia Morgese
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
| | - Wenqing Yan
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
| | - Lucca Trachsel
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
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31
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Hu J, Liu S. Topological effects of macrocyclic polymers: from precise synthesis to biomedical applications. Sci China Chem 2017. [DOI: 10.1007/s11426-017-9083-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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32
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Fang WC, Zhang R, Yao YF, Liu HJ, Chen Y. Specific thermoresponsive behaviours exhibited by optically active and inactive phenylalanine modified hyperbranched polyethylenimines in water. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-017-1950-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Tarabukina E, Seyednov E, Filippov A, Constantin M, Harabagiu V, Fundueanu G. Thermoresponsive properties of N-isopropylacrylamide with methacrylic acid copolymer in media of different acidity. Macromol Res 2017. [DOI: 10.1007/s13233-017-5077-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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34
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Xu F, Wu D, Huang Y, Wei H, Gao Y, Feng X, Yan D, Mai Y. Multi-Dimensional Self-Assembly of a Dual-Responsive ABC Miktoarm Star Terpolymer. ACS Macro Lett 2017; 6:426-430. [PMID: 35610847 DOI: 10.1021/acsmacrolett.7b00031] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This letter reports the first 2D self-assembly of ABC miktoarm star terpolymers based on dual-responsive polycaprolactone-arm-poly(N-isopropylacrylamide)-arm-poly(2-dimethylaminoethyl methacrylate) (μ-CID), which self-assembled into multilayer nanosheets comprising polycaprolactone single crystals in tetrahydrofuran (THF)/methanol mixed solvents. Interestingly, the nanosheets showed pH-responsive morphological transitions in aqueous solutions, yielding multidimensional assemblies, including 2D hexagonal aggregates, patchy nanofibrils, and patchy vesicles, at different pH values. The nanosheets also exhibited thermoresponsive transition to spherical patchy micelles at a temperature above the lower critical solution temperature (LCST) of the poly(N-isopropylacrylamide) block. This study offers a novel system for fundamental study on the self-assembly of miktoarm star terpolymers.
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Affiliation(s)
- Fugui Xu
- School
of Chemistry and Chemical Engineering, School of Electronic Information
and Electrical Engineering, Shanghai Key Laboratory of Electrical
Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Dongdong Wu
- School
of Chemistry and Chemical Engineering, School of Electronic Information
and Electrical Engineering, Shanghai Key Laboratory of Electrical
Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yinjuan Huang
- School
of Chemistry and Chemical Engineering, School of Electronic Information
and Electrical Engineering, Shanghai Key Laboratory of Electrical
Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Hao Wei
- School
of Chemistry and Chemical Engineering, School of Electronic Information
and Electrical Engineering, Shanghai Key Laboratory of Electrical
Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yong Gao
- College
of Chemistry and Key Lab of Environment Friendly Chemistry and Application
in Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Xinliang Feng
- School
of Chemistry and Chemical Engineering, School of Electronic Information
and Electrical Engineering, Shanghai Key Laboratory of Electrical
Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Deyue Yan
- School
of Chemistry and Chemical Engineering, School of Electronic Information
and Electrical Engineering, Shanghai Key Laboratory of Electrical
Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yiyong Mai
- School
of Chemistry and Chemical Engineering, School of Electronic Information
and Electrical Engineering, Shanghai Key Laboratory of Electrical
Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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35
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Zhang H, Wu W, Zhao X, Zhao Y. Synthesis and Thermoresponsive Behaviors of Thermo-, pH-, CO2-, and Oxidation-Responsive Linear and Cyclic Graft Copolymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00220] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hongcan Zhang
- Suzhou Key Laboratory of
Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, State and Local
Joint Engineering Laboratory for Novel Functional Polymeric Materials,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Wentao Wu
- Suzhou Key Laboratory of
Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, State and Local
Joint Engineering Laboratory for Novel Functional Polymeric Materials,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xiaoqi Zhao
- Suzhou Key Laboratory of
Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, State and Local
Joint Engineering Laboratory for Novel Functional Polymeric Materials,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Youliang Zhao
- Suzhou Key Laboratory of
Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, State and Local
Joint Engineering Laboratory for Novel Functional Polymeric Materials,
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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36
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Ma J, Xuan S, Guerin AC, Yu T, Zhang D, Kuroda DG. Unusual molecular mechanism behind the thermal response of polypeptoids in aqueous solutions. Phys Chem Chem Phys 2017; 19:10878-10888. [DOI: 10.1039/c6cp08536a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The molecular mechanism behind the thermal response of the aqueous solutions of two identical polypeptoids with different architecture was studied. It was found the thermal response is initiated by a conformational change of the polymer backbone irrespective of the architecture.
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Affiliation(s)
- Jianbo Ma
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | - Sunting Xuan
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | - Abby C. Guerin
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | - Tianyi Yu
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
| | - Donghui Zhang
- Department of Chemistry
- Louisiana State University
- Baton Rouge
- USA
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37
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Morgese G, Trachsel L, Romio M, Divandari M, Ramakrishna SN, Benetti EM. Topological Polymer Chemistry Enters Surface Science: Linear versus Cyclic Polymer Brushes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607309] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Giulia Morgese
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
- Cartilage Engineering + Regeneration Laboratory; ETH Zürich; Department of Health Sciences and Technology; Zürich Switzerland
| | - Lucca Trachsel
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
| | - Matteo Romio
- Department of Chemical Sciences; University of Padova; Padova Italy
| | - Mohammad Divandari
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
| | | | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
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38
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Morgese G, Trachsel L, Romio M, Divandari M, Ramakrishna SN, Benetti EM. Topological Polymer Chemistry Enters Surface Science: Linear versus Cyclic Polymer Brushes. Angew Chem Int Ed Engl 2016; 55:15583-15588. [DOI: 10.1002/anie.201607309] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/19/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Giulia Morgese
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
- Cartilage Engineering + Regeneration Laboratory; ETH Zürich; Department of Health Sciences and Technology; Zürich Switzerland
| | - Lucca Trachsel
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
| | - Matteo Romio
- Department of Chemical Sciences; University of Padova; Padova Italy
| | - Mohammad Divandari
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
| | | | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Zürich Switzerland
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39
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Time dependence of the aggregation of star-shaped poly(2-isopropyl-2-oxazolines) in aqueous solutions. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-1112-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Xue N, Qiu XP, Chen Y, Satoh T, Kakuchi T, Winnik FM. Effect of chain architecture on the phase transition of star and cyclic poly(N-isopropylacrylamide) in water. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24114] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Na Xue
- Department of Chemistry; University of Montréal, Succursale Centre Ville; Montreal QC H3C 3J7 Canada
| | - Xing-Ping Qiu
- Department of Chemistry; University of Montréal, Succursale Centre Ville; Montreal QC H3C 3J7 Canada
| | - Yougen Chen
- Frontier Chemistry Center, Faculty of Engineering; Hokkaido University; Sapporo 060-8628 Japan
| | - Toshifumi Satoh
- Division of Applied Chemistry, Faculty of Engineering; Hokkaido University; Sapporo 060-8628 Japan
| | - Toyoji Kakuchi
- Frontier Chemistry Center, Faculty of Engineering; Hokkaido University; Sapporo 060-8628 Japan
- Division of Applied Chemistry, Faculty of Engineering; Hokkaido University; Sapporo 060-8628 Japan
| | - Françoise M. Winnik
- Department of Chemistry; University of Montréal, Succursale Centre Ville; Montreal QC H3C 3J7 Canada
- World Premier International (WPI) Research Center Initiative, International Center for Materials Nanoarchitectonics (MANA) and National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba 305-0044 Japan
- Department of Chemistry and Faculty of Pharmacy; University of Helsinki; Helsinki FI-00014 Finland
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41
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Sedlák M. A novel approach to controlled self-assembly of pH-responsive thermosensitive homopolymer polyelectrolytes into stable nanoparticles. Adv Colloid Interface Sci 2016; 232:57-69. [PMID: 26792020 DOI: 10.1016/j.cis.2015.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/07/2015] [Accepted: 12/08/2015] [Indexed: 12/14/2022]
Abstract
This review addresses the recent research progress in introducing and elaborating a novel approach to controlled polymer self-assembly into stable nanoparticles using pH-responsive thermosensitive homopolymer polyelectrolytes. Interesting aspect of this approach is that stable polymeric nanoparticles are formed from homopolymers of one type only and without any assembly-triggering additives. The process of their formation can be monitored online e.g. by light scattering and particle size can be finely custom tuned. Obtained nanoparticles have interesting properties and are very stable over long periods of time and over a broad range of salt concentrations including physiological conditions. Much effort was devoted not only to finding optimum experimental protocols and to characterizing resulting nanoparticles in detail, but also to understanding physical processes behind these successful protocols.
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42
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Ji Z, Li J, Chen G, Jiang M. Fate of Host-Stabilized Charge Transfer Complexation Based on Cucurbit[8]uril: Inducing Cyclization of PNIPAM and Dissociation in Self-Assembly of the Cyclic Polymer. ACS Macro Lett 2016; 5:588-592. [PMID: 35632376 DOI: 10.1021/acsmacrolett.6b00220] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Host-stabilized charge transfer (HSCT) complex based on cucurbit[8]uril has been widely used in building novel supramolecular structures, which could further self-assemble into nano-objects. High stability of the HSCT interaction during the assembly process is always assumed or defaulted. However, the stability during self-assembly has never been well characterized in previous studies. In this work, we realized cyclization of linear PNIPAM by CB[8]-based HSCT interaction first. And then we found unexpectedly that during the heating-induced self-assembly of the cyclic PNIPAM, dissociation of the HSCT interaction took place. In this process, charged CB[8] complex was released from the aggregates of the cyclic polymer to solution, and it could be recaptured by newly added guest molecules. This HSCT dissociation was driven by the incompatibility of the hydrophobicity of the PNIPAM aggregates and the cationic nature of the HSCT complex. To the best of our knowledge, this assembly induced dissociation phenomenon has not been reported in literature.
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Affiliation(s)
- Zhongwei Ji
- State
Key Laboratory of Molecular Engineering of Polymers and Department
of Macromolecular Science, Fudan University, Shanghai, 200433 China
| | - Junfang Li
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032 China
| | - Guosong Chen
- State
Key Laboratory of Molecular Engineering of Polymers and Department
of Macromolecular Science, Fudan University, Shanghai, 200433 China
| | - Ming Jiang
- State
Key Laboratory of Molecular Engineering of Polymers and Department
of Macromolecular Science, Fudan University, Shanghai, 200433 China
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43
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Williams R, Pitto-Barry A, Kirby N, Dove AP, O’Reilly RK. Cyclic Graft Copolymer Unimolecular Micelles: Effects of Cyclization on Particle Morphology and Thermoresponsive Behavior. Macromolecules 2016; 49:2802-2813. [PMID: 27175037 PMCID: PMC4861350 DOI: 10.1021/acs.macromol.5b02710] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 02/17/2016] [Indexed: 01/27/2023]
Abstract
The synthesis of cyclic amphiphilic graft copolymers with a hydrophobic polycarbonate backbone and hydrophilic poly(N-acryloylmorpholine) (PNAM) side arms via a combination of ring-opening polymerization (ROP), cyclization via copper-catalyzed azide-alkyne cycloaddition (CuAAC), and reversible addition-fragmentation chain transfer (RAFT) polymerization is reported. The ability of these cyclic graft copolymers to form unimolecular micelles in water is explored using a combination of light scattering, small-angle X-ray scattering (SAXS), and cryogenic transmission electron microscopy (cryoTEM) analyses, where particle size was found to increase with increasing PNAM arm length. Further analysis revealed differences in the solution conformations, loading capabilities, and morphologies of the cyclic graft copolymers in comparison to equivalent linear graft copolymer unimolecular micelle analogues. Furthermore, the cyclic and linear graft copolymers were found to exhibit significantly different cloud point temperatures. This study highlights how subtle changes in polymer architecture (linear graft copolymer versus cyclic graft copolymer) can dramatically influence a polymer's nanostructure and its properties.
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Affiliation(s)
- Rebecca
J. Williams
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Anaïs Pitto-Barry
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Nigel Kirby
- Australian Synchrotron, 800 Blackburn
Road, Clayton, Victoria 3168, Australia
| | - Andrew P. Dove
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Rachel K. O’Reilly
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
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44
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Wang W, Gao C, Qu Y, Song Z, Zhang W. In Situ Synthesis of Thermoresponsive Polystyrene-b-poly(N-isopropylacrylamide)-b-polystyrene Nanospheres and Comparative Study of the Looped and Linear Poly(N-isopropylacrylamide)s. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00233] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Wei Wang
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry, and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Chengqiang Gao
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry, and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Yaqing Qu
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry, and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Zefeng Song
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry, and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials
of the Ministry of
Education, Institute of Polymer Chemistry, and ‡Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
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45
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Wang X, Li L. How does the anionic surfactant SDS affect the association of hydrophobically end-modified PNIPAM chains in aqueous solution? POLYMER 2016. [DOI: 10.1016/j.polymer.2016.02.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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46
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Li J, Zhang Z, Zhou X, Chen T, Nie J, Du B. PNIPAmx–PPO36–PNIPAmx thermo-sensitive triblock copolymers: chain conformation and adsorption behavior on a hydrophobic gold surface. Phys Chem Chem Phys 2016; 18:519-28. [DOI: 10.1039/c5cp06079f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The presence of the PNIPAm block is not a sufficient condition for the complex adsorption behavior of PNIPAmx–PPO36–PNIPAmx triblock copolymers.
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Affiliation(s)
- Jianyuan Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhijun Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xianjing Zhou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Tongquan Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jingjing Nie
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Binyang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
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47
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Pan W, Liu H, Zhang H, Zhao Y. Synthesis and properties of an acid-labile dual-sensitive ABCD star quaterpolymer. Polym Chem 2016. [DOI: 10.1039/c6py00267f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Copolymer aggregates formed from an amphiphilic ABCD star could exhibit acid-induced topological and morphological transformations and stimuli-triggered drug delivery properties.
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Affiliation(s)
- Weidong Pan
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Huanhuan Liu
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Hongcan Zhang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Youliang Zhao
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
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48
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Magerl D, Philipp M, Metwalli E, Gutfreund P, Qiu XP, Winnik FM, Müller-Buschbaum P. Influence of Confinement on the Chain Conformation of Cyclic Poly( N-isopropylacrylamide). ACS Macro Lett 2015; 4:1362-1365. [PMID: 35614783 DOI: 10.1021/acsmacrolett.5b00676] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In thin and ultrathin supported films, the conformations of flexible linear polymer chains might be considerably confined, in particular, for film thicknesses smaller than a few times the radius of gyration. For ring polymers in solution or in melt, the radii of gyration are significantly reduced as compared to those of their linear counterparts. We study here the influence of geometrical confinement on the chain conformation of cyclic PNIPAM in silicon-supported films. Measurements are performed by grazing incidence small angle neutron scattering (GISANS). For all films, the component of the radius of gyration parallel to the substrate, Rgc∥, is significantly higher than the unperturbed Rgc determined under theta solvent or melt conditions. We attribute this effect to a preferential selection of stretched PNIPAM ring conformations in thin films and a preferential orientation of macromolecules parallel to the film interfaces with the substrate and air.
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Affiliation(s)
- David Magerl
- Lehrstuhl
für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Martine Philipp
- Lehrstuhl
für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Ezzeldin Metwalli
- Lehrstuhl
für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Philipp Gutfreund
- Institut Laue-Langevin, 71 avenue
des Martyrs, 38000 Grenoble, France
| | - Xing-Ping Qiu
- Faculty
of Pharmacy and Department of Chemistry, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal QC H3C 3J7, Canada
| | - Françoise M. Winnik
- Faculty
of Pharmacy and Department of Chemistry, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal QC H3C 3J7, Canada
- World Premier International
(WPI) Research Center Initiative, International Center for Materials
Nanoarchitectonics (MANA) and National Institute for Materials Science
(NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Peter Müller-Buschbaum
- Lehrstuhl
für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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49
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Boyer C, Corrigan NA, Jung K, Nguyen D, Nguyen TK, Adnan NNM, Oliver S, Shanmugam S, Yeow J. Copper-Mediated Living Radical Polymerization (Atom Transfer Radical Polymerization and Copper(0) Mediated Polymerization): From Fundamentals to Bioapplications. Chem Rev 2015; 116:1803-949. [DOI: 10.1021/acs.chemrev.5b00396] [Citation(s) in RCA: 356] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cyrille Boyer
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Nathaniel Alan Corrigan
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Kenward Jung
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Diep Nguyen
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Thuy-Khanh Nguyen
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Nik Nik M. Adnan
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Susan Oliver
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Sivaprakash Shanmugam
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Jonathan Yeow
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
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50
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Yang Y, Tang G, Hu M, Shao L, Li J, Bi Y. High-efficiency synthesis of well-defined cyclic poly(N-vinylcaprolactam) and its solution properties. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.05.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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