1
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Liu X, Mokarizadeh AH, Narayanan A, Mane P, Pandit A, Tseng YM, Tsige M, Joy A. Multiphasic Coacervates Assembled by Hydrogen Bonding and Hydrophobic Interactions. J Am Chem Soc 2023; 145:23109-23120. [PMID: 37820374 DOI: 10.1021/jacs.3c06675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Coacervation has emerged as a prevalent mechanism to compartmentalize biomolecules in living cells. Synthetic coacervates help in understanding the assembly process and mimic the functions of biological coacervates as simplified artificial systems. Though the molecular mechanism and mesoscopic properties of coacervates formed from charged coacervates have been well investigated, the details of the assembly and stabilization of nonionic coacervates remain largely unknown. Here, we describe a library of coacervate-forming polyesteramides and show that the water-tertiary amide bridging hydrogen bonds and hydrophobic interactions stabilize these nonionic, single-component coacervates. Analogous to intracellular biological coacervates, these coacervates exhibit "liquid-like" features with low viscosity and low interfacial energy, and form coacervates with as few as five repeating units. By controlling the temperature and engineering the molar ratio between hydrophobic interaction sites and bridging hydrogen bonding sites, we demonstrate the tuneability of the viscosity and interfacial tension of polyesteramide-based coacervates. Taking advantage of the differences in the mesoscopic properties of these nonionic coacervates, we engineered multiphasic coacervates with core-shell architectures similar to those of intracellular biological coacervates, such as nucleoli and stress granule-p-body complexes. The multiphasic structures produced from these synthetic nonionic polyesteramide coacervates may serve as a valuable tool for investigating physicochemical principles deployed by living cells to spatiotemporally control cargo partitioning, biochemical reaction rates, and interorganellar signal transport.
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Affiliation(s)
- Xinhao Liu
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Abdol Hadi Mokarizadeh
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Amal Narayanan
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Prathamesh Mane
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Avanti Pandit
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Yen-Ming Tseng
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Mesfin Tsige
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Abraham Joy
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
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2
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Henschel C, Schanzenbach D, Laschewsky A, Ko CH, Papadakis CM, Müller-Buschbaum P. Thermoresponsive and co-nonsolvency behavior of poly(N-vinyl isobutyramide) and poly(N-isopropyl methacrylamide) as poly(N-isopropyl acrylamide) analogs in aqueous media. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05083-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Sets of the nonionic polymers poly(N-vinyl isobutyramide) (pNVIBAm) and poly(N-isopropyl methacrylamide) (pNIPMAm) are synthesized by radical polymerization covering the molar mass range from about 20,000 to 150,000 kg mol−1, and their thermoresponsive and solvent-responsive behaviors in aqueous solution are studied. Both polymers feature a lower critical solution temperature (LCST) apparently of the rare so-called type II, as characteristic for their well-studied analogue poly(N-isopropyl acrylamide) (pNIPAm). Moreover, in analogy to pNIPAm, both polymers exhibit co-nonsolvency behavior in mixtures of water with several co-solvents, including short-chain alcohols as well as a range of polar aprotic solvents. While the cloud points of the aqueous solutions are a few degrees higher than those for pNIPAm and increase in the order pNIPAm < pNVIBAm < pNIPMAm, the co-nonsolvency behavior becomes less pronounced in the order pNIPAm > pNVIBAm > pNIPMAm. Exceptionally, pNIPMAm does not show co-nonsolvency in mixtures of water and N,N-dimethylformamide.
Graphical Abstract
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3
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Xu X, Bizmark N, Christie KSS, Datta SS, Ren ZJ, Priestley RD. Thermoresponsive Polymers for Water Treatment and Collection. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c01502] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Feasible Fabrication of Hollow Micro-vesicles by Non-amphiphilic Macromolecules Based on Interfacial Cononsolvency. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2541-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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5
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Peng Q, Chen J, Zeng Z, Wang T, Xiang L, Peng X, Liu J, Zeng H. Adhesive Coacervates Driven by Hydrogen-Bonding Interaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004132. [PMID: 33006447 DOI: 10.1002/smll.202004132] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Coacervation plays a critical role in numerous biological activities such as constructing biological tissues and achieving robust wet adhesion of marine sessile organisms, which conventionally occurs when oppositely charged polyelectrolytes are mixed in aqueous solutions driven by electrostatic attraction. Here, a novel type of adhesive coacervate is reported, driven by hydrogen-bonding interactions, readily formed by mixing silicotungstic acid and nonionic polyethylene glycol in water, providing a new approach for developing coacervates from nonionic systems. The as-prepared coacervate is easily paintable underwater, show strong wet adhesion to diverse substrates, and has been successfully applied as a hemostatic agent to treat organ injuries without displaying hemolytic activity, while with inherent antimicrobial properties thus avoiding inflammations and infections due to microorganism accumulation. This work demonstrates that coacervation can occur in salt-free environments via non-electrostatic interactions, providing a new platform for engineering multifunctional coacervate materials as tissue glues, wound dressings and membrane-free cell systems.
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Affiliation(s)
- Qiongyao Peng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Jingsi Chen
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Zicheng Zeng
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510700, China
| | - Tao Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Li Xiang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Xuwen Peng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Jifang Liu
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510700, China
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
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Frenzel L, Lokteva I, Koof M, Narayanan S, Grübel G, Lehmkühler F. Influence of TMAO as co-solvent on the gelation of silica-PNIPAm core-shell nanogels at intermediate volume fractions. Chemphyschem 2020; 21:1318-1325. [PMID: 32250508 PMCID: PMC7318175 DOI: 10.1002/cphc.202000114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/20/2020] [Indexed: 12/29/2022]
Abstract
We study the structure and dynamics of poly(N-isopropylacrylamide) (PNIPAm) core-shell nanogels dispersed in aqueous trimethylamine N-oxide (TMAO) solutions by means of small-angle X-ray scattering and X-ray photon correlation spectroscopy (XPCS). Upon increasing the temperature above the lower critical solution temperature of PNIPAm at 33 °C, a colloidal gel is formed as identified by an increase of I(q) at small q as well as a slowing down of sample dynamics by various orders of magnitude. With increasing TMAO concentration the gelation transition shifts linearly to lower temperatures. Above a TMAO concentration of approximately 0.40 mol/L corresponding to a 1 : 1 ratio of TMAO and NIPAm groups, collapsed PNIPAm states are found for all temperatures without any gelation transition. This suggests that reduction of PNIPAm-water hydrogen bonds due to the presence of TMAO results in a stabilisation of the collapsed PNIPAm state and suppresses gelation of the nanogel.
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Affiliation(s)
- Lara Frenzel
- Deutsches Elektronen-Synchrotron DESYNotkestr. 8522607HamburgGermany
- The Hamburg Centre for Ultrafast ImagingLuruper Chaussee 14922761HamburgGermany
| | - Irina Lokteva
- Deutsches Elektronen-Synchrotron DESYNotkestr. 8522607HamburgGermany
- The Hamburg Centre for Ultrafast ImagingLuruper Chaussee 14922761HamburgGermany
| | - Michael Koof
- Deutsches Elektronen-Synchrotron DESYNotkestr. 8522607HamburgGermany
- The Hamburg Centre for Ultrafast ImagingLuruper Chaussee 14922761HamburgGermany
| | - Suresh Narayanan
- Advanced Photon SourceArgonne National LaboratoryArgonneIllinois60439United States
| | - Gerhard Grübel
- Deutsches Elektronen-Synchrotron DESYNotkestr. 8522607HamburgGermany
- The Hamburg Centre for Ultrafast ImagingLuruper Chaussee 14922761HamburgGermany
| | - Felix Lehmkühler
- Deutsches Elektronen-Synchrotron DESYNotkestr. 8522607HamburgGermany
- The Hamburg Centre for Ultrafast ImagingLuruper Chaussee 14922761HamburgGermany
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Wang J, Liu Y, Chen R, Zhang Z, Chen G, Chen H. Ultralow Self-Cross-Linked Poly( N-isopropylacrylamide) Microgels Prepared by Solvent Exchange. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13991-13998. [PMID: 31596589 DOI: 10.1021/acs.langmuir.9b02722] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We found that the poly(N-isopropylacrylamide) (PNIPAm) synthesized by free-radical polymerization in organic phase could also form stable microgels in water through solvent exchange without chemical cross-linkers. Dynamic light scattering and transmission electron microscopy showed the larger swelling ratio and higher deformability of these microgels. Nuclear magnetic resonance and infrared spectroscopy indicated that the self-cross-linking structures in these microgels were attributed to the hydrogen atom abstraction both from the isopropyl tert-carbon atoms and the vinyl tert-carbon atoms in PNIPAm chains and the organic solvents were important assistants in the hydrogen abstraction behavior. Our discovery revealed that the self-cross-linking of PNIPAm chains is a common phenomenon within their free-radical polymerization process, whether in aqueous phase or in organic phase. Besides, the addition of second monomers will not affect the cross-linkage of the PNIPAm portion, which may be of great significance for the synthesis of various functional ultralow cross-linking PNIPAm microgels.
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Affiliation(s)
- Jinghong Wang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren'ai Road , Suzhou 215123 , People's Republic of China
- Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology , Soochow University , Suzhou 215006 , People's Republic of China
| | - Yuping Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren'ai Road , Suzhou 215123 , People's Republic of China
| | - Rui Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren'ai Road , Suzhou 215123 , People's Republic of China
| | - Zexin Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren'ai Road , Suzhou 215123 , People's Republic of China
- Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology , Soochow University , Suzhou 215006 , People's Republic of China
| | - Gaojian Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren'ai Road , Suzhou 215123 , People's Republic of China
- Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology , Soochow University , Suzhou 215006 , People's Republic of China
| | - Hong Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren'ai Road , Suzhou 215123 , People's Republic of China
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Pooch F, Teltevskij V, Karjalainen E, Tenhu H, Winnik FM. Poly(2-propyl-2-oxazoline)s in Aqueous Methanol: To Dissolve or not to Dissolve. Macromolecules 2019; 52:6361-6368. [PMID: 31543552 PMCID: PMC6748674 DOI: 10.1021/acs.macromol.9b01234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/01/2019] [Indexed: 11/30/2022]
Abstract
![]()
At
room temperature, poly(N-isopropylacrylamide)
(PNIPAM) is soluble in water and methanol, but it is not soluble in
certain water/methanol mixtures. This phenomenon, known as cononsolvency,
has been explored in great detail experimentally and theoretically
in an attempt to understand the complex interactions occurring in
the ternary PNIPAM/water/co-nonsolvent system. Yet little is known
about the effects of the polymer structure on cononsolvency. To address
this point, we investigated the temperature-dependent solution properties
in water, methanol, and mixtures of the two solvents of poly(2-cyclopropyl-2-oxazoline)
(PcyPOx) and two structural isomers of PNIPAM (Mn ∼ 11 kg/mol): poly(2-isopropyl-2-oxazoline) (PiPOx)
and poly(2-n-propyl-2-oxazoline) (PnPOx). The phase
diagram of the ternary water/methanol/poly(2-propyl-2-oxazolines)
(PPOx) systems, constructed based on cloud point (TCP) measurements, revealed that PnPOx exhibits cononsolvency
in water/methanol mixtures. In contrast, methanol acts as a cosolvent
for PiPOx and PcyPOx in water. The enthalpy, ΔH, and temperature, Tmax, of the coil-to-globule
transition of the three polymers in various water/methanol mixtures
were measured by high-sensitivity differential scanning calorimetry. Tmax follows the same trends as TCP, confirming the cononsolvency of PnPOx and the cosolvency
of PiPOx and PcyPOx. ΔH decreases linearly
as a function of the methanol content for all PPOx systems. Ancillary
high-resolution 1H NMR spectroscopy studies of PPOx solutions
in D2O and methanol-d4, coupled
with DOSY and NOESY experiments revealed that the n-propyl group of PnPOx rotates freely in D2O, whereas
the rotation of the isopropyl and cyclopropyl groups of PiPOx and
PcyPOx, respectively, is limited due to steric restriction. This factor
appears to play an important role in the case of the PPOxs/water/methanol
ternary system.
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Affiliation(s)
- Fabian Pooch
- Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki 00014, Finland
| | - Valerij Teltevskij
- Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki 00014, Finland
| | - Erno Karjalainen
- Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki 00014, Finland
| | - Heikki Tenhu
- Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki 00014, Finland
| | - Françoise M Winnik
- Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki 00014, Finland.,International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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9
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Cao M, Nie H, Hou Y, Han G, Zhang W. Synthesis of star thermoresponsive amphiphilic block copolymer nano-assemblies and the effect of topology on their thermoresponse. Polym Chem 2019. [DOI: 10.1039/c8py01617h] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Well-defined multi-arm star thermoresponsive block copolymer nano-assemblies of [poly(N-isopropylacrylamide)-block-polystyrene]n [(PNIPAM-b-PS)n] with n = 1, 2, 3 and 4 arms were synthesized by RAFT dispersion polymerization via polymerization-induced self-assembly.
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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
| | - Huijun Nie
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Yuwen Hou
- 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
| | - 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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Pérez-Ramírez HA, Haro-Pérez C, Vázquez-Contreras E, Klapp J, Bautista-Carbajal G, Odriozola G. P-NIPAM in water–acetone mixtures: experiments and simulations. Phys Chem Chem Phys 2019; 21:5106-5116. [DOI: 10.1039/c8cp07549b] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The lower critical solution temperature (LCST) of poly-N-isopropylacrylamide (p-NIPAM) diminishes when a small volume of acetone is added to the aqueous polymer solution, and then increases for further additions, producing a minimum at a certain acetone concentration.
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Affiliation(s)
- H. A. Pérez-Ramírez
- Área de Física de Procesos Irreversibles
- División de Ciencias Básicas e Ingeniería
- Universidad Autónoma Metropolitana-Azcapotzalco
- Av. San Pablo 180
- 02200 Ciudad de México
| | - C. Haro-Pérez
- Área de Física de Procesos Irreversibles
- División de Ciencias Básicas e Ingeniería
- Universidad Autónoma Metropolitana-Azcapotzalco
- Av. San Pablo 180
- 02200 Ciudad de México
| | - E. Vázquez-Contreras
- Departamento de Ciencias Naturales
- CNI
- Universidad Autónoma Metropolitana – Cuajimalpa
- Av. Vasco de Quiroga 4871
- 05348 Ciudad de México
| | - J. Klapp
- Instituto Nacional de Investigaciones Nucleares
- ININ
- Km. 36.5, Carretera México – Toluca
- 52750 Ocoyoacac
- Mexico
| | - G. Bautista-Carbajal
- Academia de Matemáticas
- Universidad Autónoma de la Ciudad de México
- 07160 Ciudad de México
- Mexico
| | - G. Odriozola
- Área de Física de Procesos Irreversibles
- División de Ciencias Básicas e Ingeniería
- Universidad Autónoma Metropolitana-Azcapotzalco
- Av. San Pablo 180
- 02200 Ciudad de México
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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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