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Matsumoto M, Asoh TA, Shoji T, Tsuboi Y. Formation of Single Double-Layered Coacervate of Poly( N,N-diethylacrylamide) in Water by a Laser Tweezer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2874-2883. [PMID: 33616404 DOI: 10.1021/acs.langmuir.0c03009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We demonstrate liquid-liquid phase separation involving both coacervation and coil-to-globule phase transition of a thermoresponsive polymer. By focusing a near-infrared laser beam into an aqueous solution of poly(N-isopropylacrylamide) (PNIPAM), a single phase-separated polymer microdroplet can be formed and stably trapped at the focal point. Such droplet formation is induced by a local elevation in temperature (induced by a photothermal effect) and an optical force. The technique allows us to selectively analyze a single polymer droplet trapped at the focal point. In this study, we applied this technique to poly(N,N-diethylacrylamide) (PDEA) in water and generated a double-layered PDEA droplet. Such an inhomogeneous and complex microstructure has not been previously observed both in steady-state heating of a PDEA solution and in the PNIPAM system. Moreover, we used micro-Raman spectroscopy to clarify that PDEA underwent dehydration due to a coil-to-globule phase transition. Despite this, the polymer concentration (Cpoly) of the trapped PDEA droplet was very low and was around 30 wt %. Cpoly depended on the molecular weight of PDEA and the laser power that regulates the temperature elevation. These results strongly indicate that PDEA undergoes coacervation in addition to a coil-to-globule phase transition. This study will help provide us with a fundamental understanding of the phase separation mechanisms of thermoresponsive polymers.
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Affiliation(s)
- Mitsuhiro Matsumoto
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Taka-Aki Asoh
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tatsuya Shoji
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- The Osaka City University Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, 3-3-138, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Yasuyuki Tsuboi
- Division of Molecular Materials Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- The Osaka City University Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, 3-3-138, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
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Shoji T, Tsuboi Y. Nanostructure-assisted optical tweezers for microspectroscopic polymer analysis. Polym J 2020. [DOI: 10.1038/s41428-020-00410-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zakharova NV, Simonova MA, Zelinskii SN, Annenkov VV, Filippov AP. Synthesis, molecular characteristics, and stimulus-sensitivity of graft copolymer of chitosan and poly(N,N-diethylacrylamide). J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111355] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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4
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Study of phase separation behavior of poly(N,N-diethylacrylamide) in aqueous solution prepared by RAFT polymerization. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-018-2411-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Matsumoto M, Tada T, Asoh TA, Shoji T, Nishiyama T, Horibe H, Katsumoto Y, Tsuboi Y. Dynamics of the Phase Separation in a Thermoresponsive Polymer: Accelerated Phase Separation of Stereocontrolled Poly( N, N-diethylacrylamide) in Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13690-13696. [PMID: 30362770 DOI: 10.1021/acs.langmuir.8b02848] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We studied the dependence on tacticity of the dynamic phase separation behavior of thermoresponsive poly( N, N-diethylacrylamide) (PDEA) in an aqueous solution. Using a laser temperature-jump technique combined with transient photometry, we determined the time constants of the phase separation and found that both atactic and isotactic-rich PDEAs had fast and slow phase separation processes (τfast and τslow). The fast process (τfast) was independent of the tacticity, irrespective of the concentration. On the other hand, the slow process had a strong dependence on the tacticity. We found the slow phase separation process got considerably faster with increasing isotacticity in dilute solutions. This effect due to the tacticity of the PDEA is totally different from that of poly( N-isopropylacrylamide) and can be explained on the basis of the difference between the hydrophobicity of atactic PDEA and that of isotactic-rich PDEA.
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Affiliation(s)
| | - Takanori Tada
- Graduate School of Chemical Sciences and Engineering , Hokkaido University , Sapporo 060-0810 , Japan
| | | | | | | | | | - Yukiteru Katsumoto
- Department of Chemistry, Faculty of Science , Fukuoka University , 8-19-1 Nanakuma , Jonan-ku, Fukuoka 814-0180 , Japan
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Ferreira Soares DC, Oda CMR, Monteiro LOF, de Barros ALB, Tebaldi ML. Responsive polymer conjugates for drug delivery applications: recent advances in bioconjugation methodologies. J Drug Target 2018; 27:355-366. [DOI: 10.1080/1061186x.2018.1499747] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Caroline Mari Ramos Oda
- Department of Pharmaceutical Products, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Andre Luis Branco de Barros
- Department of Pharmaceutical Products, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Zhang D, Dumont MJ. Functionalizable thermoresponsive polymers synthesized from renewable 5-hydroxymethylfurfural derivative via the thiol-Michael addition reaction. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.04.075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Li K, Chen ZB, Liu DL, Zhang L, Tang Z, Wang Z, Zhao Y, Liu Z. Design and synthesis study of the thermo‐sensitive copolymer carrier of penicillin G acylase. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4299] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ke Li
- State Key Laboratory of Gansu Advanced Non‐ferrous Metal Materials Lanzhou University of Technology, Materials Science and Engineering Lanzhou 730050 China
| | - Zhen Bin Chen
- State Key Laboratory of Gansu Advanced Non‐ferrous Metal Materials Lanzhou University of Technology, Materials Science and Engineering Lanzhou 730050 China
| | - Dong Lei Liu
- State Key Laboratory of Gansu Advanced Non‐ferrous Metal Materials Lanzhou University of Technology, Materials Science and Engineering Lanzhou 730050 China
| | - Lin Zhang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research Xi'an Jiaotong University Xi'an 710049 China
| | - Zhenghua Tang
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy South China University of Technology, Guangzhou Higher Education Mega Centre Guangzhou 510006 China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy South China University of Technology, Guangzhou Higher Education Mega Centre Guangzhou 510006 China
| | - Zhe Wang
- Chemistry Department Xavier University of Louisiana New Orleans LA 70125 USA
| | - Yu Zhao
- College of Textile and Garment Southwest University Chongqing 400715 China
| | - Zhen Liu
- Department of Physics and Engineering Frostburg State University Frostburg MD 21532 USA
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Drozdov A, deClaville Christiansen J. Mechanical response and equilibrium swelling of temperature-responsive gels. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.06.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Chen S, Wang K, Zhang W. A new thermoresponsive polymer of poly(N-acryloylsarcosine methyl ester) with a tunable LCST. Polym Chem 2017. [DOI: 10.1039/c7py00274b] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A thermoresponsive polymer of the tertiary amide-based polyacrylamide, PNASME, was synthesized and its tunable thermoresponse was investigated.
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Affiliation(s)
- Shengli Chen
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Ke Wang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - 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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Lin S, Shang J, Theato P. CO2-Triggered UCST transition of amphiphilic triblock copolymers and their self-assemblies. Polym Chem 2017. [DOI: 10.1039/c7py00186j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Self-assembled vesicles presenting morphological transformations (vesicles–micelles–unimers) upon external stimuli due to their CO2 adjustable UCST behavior in aqueous solution.
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Affiliation(s)
- Shaojian Lin
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Jiaojiao Shang
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Patrick Theato
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
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