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Yokota K, Takahashi R, Ngan VT, Nishimura T, Kappl M, Fujii S, Yusa SI. Preparation of Water-Soluble Polyion Complex (PIC) Micelles with pH-Responsive Carboxybetaine Block. Macromol Rapid Commun 2024:e2400532. [PMID: 39090528 DOI: 10.1002/marc.202400532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 07/18/2024] [Indexed: 08/04/2024]
Abstract
A dual zwitterionic diblock copolymer (M100C100) consisting of poly(2-(methacryloyloxy)ethyl phosphorylcholine) (PMPC, M) and poly(3-((2-(methacryloyloxy)ethyl) dimethylammonio) propionate) (PCBMA, C) is synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. A double hydrophilic diblock copolymer (M100S100) consist of PMPC and anionic poly(3-sulfopropyl methacrylate potassium salt) (PMPS, S) is synthesized via RAFT. The degrees of polymerization of each block are 100. The charges of PMPC are neutralized intramolecularly. At neutral pH, the charges in PCBMA are also neutralized intramolecularly due to its carboxybetaine structure. Under acidic conditions, PCBMA exhibits polycation behavior as the pendant carboxy groups become protonated, forming cationic tertiary amine groups. PMPS shows permanent anionic nature independent of pH. Charge neutralized mixture of cationic M100C100 and anionic M100S100 in acidic aqueous solution forms water-soluble polyion complex (PIC) micelle owing to electrostatic attractive interactions. The core is composed of the cationic PCBMA and anionic PMPS blocks, with the PMPC blocks serving as shells that covered the core surface, forming spherical core-shell PIC micelles. Above pH 4 the pendant carboxy groups in PCBMA undergo deprotonation, transitioning to a zwitterionic state, thereby eliminating the cationic charge in PCBMA. Therefore, above pH 4 the PIC micelles are dissociated due to the disappearance of the charge interactions.
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Affiliation(s)
- Kaito Yokota
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - Rintaro Takahashi
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Vu Thi Ngan
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - Tomoya Nishimura
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
| | - Michael Kappl
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Syuji Fujii
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka, 535-8585, Japan
- Nanomaterials Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka, 535-8585, Japan
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280, Japan
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2
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Heo TY, Choi SH. Ionic Strength-Dependent Structure of Complex Coacervate Core Micelles. J Phys Chem B 2024; 128:1256-1265. [PMID: 38288748 DOI: 10.1021/acs.jpcb.3c06004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Salt concentration-dependent structure of complex coacervate core micelles (C3Ms), formed by polyether-based block copolyelectrolytes containing cationic ammonium (A) or anionic sulfonate (S) groups in aqueous media, is investigated by light scattering and small-angle X-ray/neutron scattering (SAX/NS). As the salt concentration increases, both a core radius (Rcore) and an aggregation number (Nagg) significantly decrease, but a corona thickness (Lcorona) is nearly unchanged. Larger salt concentrations can lower the interfacial tension between the coacervate cores and aqueous media, resulting in an increased interfacial area per chain and a more relaxed conformation of the core blocks. Based on the structure characterization, the scaling relationship between structure parameters (i.e., Rcore, Nagg, and Lcorona) and salt concentration is obtained and compared to the theoretical description estimated by the free energy balance between the entropic penalty of core stretching and the interfacial energy. We propose that the free energy contribution of the core block stretching is not negligible in C3Ms because of the highly swollen cores caused by water.
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Affiliation(s)
- Tae-Young Heo
- Department of Chemical Engineering, Hongik University, Seoul 04066, Republic of Korea
| | - Soo-Hyung Choi
- Department of Chemical Engineering, Hongik University, Seoul 04066, Republic of Korea
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Ogata K, Hashizume M, Takahashi R, Hamaguchi T, Jinnai H, Yusa SI. Formation of Polyion Complex Aggregate Formed from a Cationic Block Copolymer and Anionic Polysaccharide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16484-16493. [PMID: 37947780 DOI: 10.1021/acs.langmuir.3c02404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Block copolymers (PmMn; P20M101 and P100M98) comprising poly(2-(methacryloyloxy)ethylphosphorylcholine) (PMPC, P) containing biocompatible phosphorylcholin pendants and cationic poly((3-acryloylaminopropyl) trimethylammonium chloride) (PMAPTAC, M) were synthesized via a controlled radical polymerization method. The degrees of polymerization of the PMPC and PMAPTAC segments are denoted by subscripts (PmMn). The mixture of cationic PmMn and anionic sodium chondroitin sulfate C (CS) with the pendant anionic carboxylate and sulfonate groups formed polyion complex (PIC) aggregates in phosphate-buffered saline. A charge-neutralized mixture of P20M101 with CS formed P20M101/CS PIC vesicles with a hydrodynamic radius (Rh) of 97.2 nm, zeta potential of ca. 0 mV, and aggregation number (Nagg) of 23,044. PMPC shells covered the surface of the PIC vesicles. The mixture of P100M98 and CS formed PIC spherical micelles with the PIC core and hydrophilic PMPC shells. The Rh, zeta potential, and Nagg of the PIC micelles were 26.4 nm, ca. 0 mV, and 404, respectively. At pH < 4, the carboxylate anions in CS were protonated. Thus, the charge balance in the PIC micelles shifted to decrease the core density owing to the electrostatic repulsions of the excess cations in the core. The PIC micelles dissociated at a NaCl concentration ≥0.6 M owing to the charge screening effect. The positively charged PIC micelles with excess P100M98 can encapsulate anionic dyes owing to electrostatic interaction.
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Affiliation(s)
- Kazushi Ogata
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Mineo Hashizume
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan
| | - Rintaro Takahashi
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Tasuku Hamaguchi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Hiroshi Jinnai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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Kuperkar K, Patel D, Atanase LI, Bahadur P. Amphiphilic Block Copolymers: Their Structures, and Self-Assembly to Polymeric Micelles and Polymersomes as Drug Delivery Vehicles. Polymers (Basel) 2022; 14:4702. [PMID: 36365696 PMCID: PMC9657626 DOI: 10.3390/polym14214702] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/24/2022] [Accepted: 10/28/2022] [Indexed: 07/26/2023] Open
Abstract
Self-assembly of amphiphilic block copolymers display a multiplicity of nanoscale periodic patterns proposed as a dominant tool for the 'bottom-up' fabrication of nanomaterials with different levels of ordering. The present review article focuses on the recent updates to the self-association of amphiphilic block copolymers in aqueous media into varied core-shell morphologies. We briefly describe the block copolymers, their types, microdomain formation in bulk and micellization in selective solvents. We also discuss the characteristic features of block copolymers nanoaggregates viz., polymer micelles (PMs) and polymersomes. Amphiphilic block copolymers (with a variety of hydrophobic blocks and hydrophilic blocks; often polyethylene oxide) self-assemble in water to micelles/niosomes similar to conventional nonionic surfactants with high drug loading capacity. Double hydrophilic block copolymers (DHBCs) made of neutral block-neutral block or neutral block-charged block can transform one block to become hydrophobic under the influence of a stimulus (physical/chemical/biological), and thus induced amphiphilicity and display self-assembly are discussed. Different kinds of polymer micelles (viz. shell and core-cross-linked, core-shell-corona, schizophrenic, crew cut, Janus) are presented in detail. Updates on polymerization-induced self-assembly (PISA) and crystallization-driven self-assembly (CDSA) are also provided. Polyion complexes (PICs) and polyion complex micelles (PICMs) are discussed. Applications of these block copolymeric micelles and polymersomes as nanocarriers in drug delivery systems are described.
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Affiliation(s)
- Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Dhruvi Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Surat 395 007, Gujarat, India
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Pham TT, Takahashi R, Pham TD, Yusa SI. Stable Water-soluble Polyion Complex Micelles Composed of Oppositely Charged Diblock Copolymers and Reinforced by Hydrophobic Interactions. CHEM LETT 2022. [DOI: 10.1246/cl.220241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Thu Thao Pham
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Rintaro Takahashi
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Tien Duc Pham
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 100000, Vietnam
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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6
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Polyion complex (PIC) micelles formed from oppositely charged styrene-based polyelectrolytes via electrostatic, hydrophobic, and π–π interactions. Polym J 2022. [DOI: 10.1038/s41428-022-00659-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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7
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Pham TT, Pham TD, Yusa SI. pH- and Thermo-Responsive Water-Soluble Smart Polyion Complex (PIC) Vesicle with Polyampholyte Shells. Polymers (Basel) 2022; 14:1659. [PMID: 35566829 PMCID: PMC9099632 DOI: 10.3390/polym14091659] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 04/15/2022] [Accepted: 04/18/2022] [Indexed: 02/06/2023] Open
Abstract
A diblock copolymer (P(VBTAC/NaSS)17-b-PAPTAC50; P(VS)17A50) composed of amphoteric random copolymer, poly(vinylbenzyl trimethylammonium chloride-co-sodium p-styrensunfonate) (P(VBTAC/NaSS); P(VS)) and cationic poly(3-(acrylamidopropyl) trimethylammonium chloride) (PAPTAC; A) block, and poly(acrylic acid) (PAAc49) were prepared via a reversible addition-fragmentation chain transfer radical polymerization. Scrips V, S, and A represent VBTAC, NaSS, and PAPTAC blocks, respectively. Water-soluble polyion complex (PIC) vesicles were formed by mixing P(VS)17A50 and PAAc49 in water under basic conditions through electrostatic interactions between the cationic PAPTAC block and PAAc49 with the deprotonated pendant carboxylate anions. The PIC vesicle collapsed under an acidic medium because the pendant carboxylate anions in PAAc49 were protonated to delete the anionic charges. The PIC vesicle comprises an ionic PAPTAC/PAAc membrane coated with amphoteric random copolymer P(VS)17 shells. The PIC vesicle showed upper critical solution temperature (UCST) behavior in aqueous solutions because of the P(VS)17 shells. The pH- and thermo-responsive behavior of the PIC vesicle were studied using 1H NMR, static and dynamic light scattering, and percent transmittance measurements. When the ratio of the oppositely charged polymers in PAPTAC/PAAc was equal, the size and light scattering intensity of the PIC vesicle reached maximum values. The hydrophilic guest molecules can be encapsulated into the PIC vesicle at the base medium and released under acidic conditions. It is expected that the PIC vesicles will be applied as a smart drug delivery system.
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Affiliation(s)
- Thu Thao Pham
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Hyogo, Japan;
| | - Tien Duc Pham
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 100000, Vietnam;
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Hyogo, Japan;
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8
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Shah S, Leon L. Structural dynamics, phase behavior, and applications of polyelectrolyte complex micelles. Curr Opin Colloid Interface Sci 2021. [DOI: 10.1016/j.cocis.2021.101424] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Read E, Lonetti B, Gineste S, Sutton AT, Di Cola E, Castignolles P, Gaborieau M, Mingotaud AF, Destarac M, Marty JD. Mechanistic insights into the formation of polyion complex aggregates from cationic thermoresponsive diblock copolymers. J Colloid Interface Sci 2021; 590:268-276. [PMID: 33548610 DOI: 10.1016/j.jcis.2021.01.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/11/2020] [Accepted: 01/10/2021] [Indexed: 11/30/2022]
Abstract
HYPOTHESIS The formation of polyion complexes (PICs) comprising thermoresponsive polymers is intended to result in the formation of aggregates that undergo significant structural changes with temperature. Moreover the observed modifications might be critically affected by polymer structure and PICs composition. EXPERIMENTS Different block copolymers based on cationic poly(3-acrylamidopropyltrimethylammonium chloride) and thermoresponsive poly(N-isopropylacrylamide) were synthesized by aqueous RAFT/MADIX polymerization at room temperature. Addition of poly(acrylic acid) in a controlled fashion led to the formation of PICs aggregates. The structural changes induced by temperature were characterized by differential scanning calorimetry, Nuclear Magnetic Resonance spectroscopy and scattering methods. FINDINGS Thermoresponsive PICs undergo significant structural changes when increasing temperature above the cloud point of the thermoresponsive block. The reversibility of these phenomena depends strongly on the structural parameters of the block copolymers and on PICs composition.
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Affiliation(s)
- E Read
- Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
| | - B Lonetti
- Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
| | - S Gineste
- Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
| | - A T Sutton
- Western Sydney University, ACROSS, School of Science, Locked Bag 1797, Penrith, NSW 2751, Australia; Future Industries Institute, University of South Australia, P.O. Box 2471, Adelaide, South Australia 5001, Australia
| | | | - P Castignolles
- Western Sydney University, ACROSS, School of Science, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - M Gaborieau
- Western Sydney University, ACROSS, School of Science, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - A-F Mingotaud
- Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
| | - M Destarac
- Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - J-D Marty
- Laboratoire des IMRCP, Université Paul Sabatier, CNRS, UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
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Fehér B, Zhu K, Nyström B, Varga I, Pedersen JS. Effect of Temperature and Ionic Strength on Micellar Aggregates of Oppositely Charged Thermoresponsive Block Copolymer Polyelectrolytes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13614-13623. [PMID: 31577150 DOI: 10.1021/acs.langmuir.9b01896] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The self-assembly of two oppositely charged diblock copolymers that have a common thermosensitive nonionic block of poly(N-isopropylacrylamide) (pNIPAAM) has been investigated. The effect of the mixing ratio and total polymer concentrations on the self-assembly of the components and on the phase stability of the mixtures was studied by dynamic light scattering, electrophoretic mobility, and turbidimetry measurements in water at 20 °C. The effect of the competing electrostatic and hydrophobic interactions on the nanostructure of negatively charged electrostatically self-assembled micelles bearing a pNIPAAM corona was investigated by small-angle X-ray scattering (SAXS). The electrostatic and hydrophobic interactions were controlled independently by tuning the ionic strength (from pure water to 50 mM NaCl) and the temperature (20-50 °C) of the investigated mixtures. The SAXS data could be fitted by a spherical micelle model, which has a smoothly decaying radial profile and a Gaussian star term that describes the internal structure of the micellar structures and possible attractive interactions between the polymer chains. At high temperature, a cluster structure factor was included for describing the formation of bulky clusters of the formed micelles. At low temperature and ionic strength, the formation of micelles with a coacervate core and hydrated pNIPAAM shell was observed. The structural evolution of the self-assembled micelles with increasing ionic strength and temperature could be followed, and finally at high ionic strength and temperature, the formation of inverted micelles with a hydrophobic core and polyelectrolyte shell could be identified.
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Affiliation(s)
- Bence Fehér
- Institute of Chemistry , ELTE , Pázmány Péter sétány 1/A , Budapest 1117 , Hungary
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus C , Denmark
| | - Kaizheng Zhu
- Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 Oslo , Norway
| | - Bo Nyström
- Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 Oslo , Norway
| | - Imre Varga
- Institute of Chemistry , ELTE , Pázmány Péter sétány 1/A , Budapest 1117 , Hungary
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus C , Denmark
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11
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van Hees IA, Swinkels PJM, Fokkink RG, Velders AH, Voets IK, van der Gucht J, Kamperman M. Self-assembly of oppositely charged polyelectrolyte block copolymers containing short thermoresponsive blocks. Polym Chem 2019; 10:3127-3134. [PMID: 34912475 PMCID: PMC8612725 DOI: 10.1039/c9py00250b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 03/27/2019] [Indexed: 12/12/2022]
Abstract
The assembly of oppositely charged block copolymers, containing small thermoresponsive moieties, was investigated as a function of salt concentration and temperature. Aqueous solutions of poly-[N-isopropylacrylamide]-b-poly[dimethylaminoethyl methacrylate] (NIPAM44-b-DMAEMA216) and PNIPAM-b-poly[acrylic acid]-b-PNIPAM (NIPAM35-b-AA200-b-NIPAM35) were mixed in equal charge stoichiometry, and analysed by light scattering (LS), NMR spectroscopy and small angle X-ray scattering (SAXS). At room temperature, two different micelle morphologies were found at different salt concentrations. At NaCl concentrations below 0.75 M, complex coacervate core micelles (C3M) with a PNIPAM corona were formed as a result of interpolyelectrolyte complexation. At NaCl concentrations exceeding 0.75 M, the C3M micelles inverted into PNIPAM cored micelles (PCM), containing a water soluble polyelectrolyte corona. This behavior is ascribed to the salt concentration dependence of both the lower critical solution temperature (LCST) of PNIPAM, and the complex coacervation. Above 0.75 M NaCl, the PNIPAM blocks are insoluble in water at room temperature, while complexation between the polyelectrolytes is prevented because of charge screening by the salt. Upon increasing the temperature, both types of micelles display a cloud point temperature (Tcp), despite the small thermoresponsive blocks, and aggregate into hydrogels. These hydrogels consist of a complexed polyelectrolyte matrix with microphase separated PNIPAM domains. Controlling the morphology and aggregation of temperature sensitive polyelectrolytes can be an important tool for drug delivery systems, or the application and hardening of underwater glues. The assembly of oppositely charged block copolymers, containing small thermoresponsive moieties, was investigated as a function of salt concentration and temperature.![]()
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Affiliation(s)
- I. A. van Hees
- Physical Chemistry and Soft Matter
- Wageningen University and Research
- 6708 WE Wageningen
- The Netherlands
| | - P. J. M. Swinkels
- Institute of Physics
- University of Amsterdam
- 1098 XH Amsterdam
- the Netherlands
| | - R. G. Fokkink
- Physical Chemistry and Soft Matter
- Wageningen University and Research
- 6708 WE Wageningen
- The Netherlands
| | - A. H. Velders
- Laboratory of BioNanoTechnology
- Wageningen University and Research
- Wageningen
- The Netherlands
| | - I. K. Voets
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - J. van der Gucht
- Physical Chemistry and Soft Matter
- Wageningen University and Research
- 6708 WE Wageningen
- The Netherlands
| | - M. Kamperman
- Polymer Science
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
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12
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Shah S, Leon L. Structural transitions and encapsulation selectivity of thermoresponsive polyelectrolyte complex micelles. J Mater Chem B 2019; 7:6438-6448. [DOI: 10.1039/c9tb01194c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Polyelectrolyte complex micelles containing thermoresponsive coronas can exhibit varying morphologies and encapsulate multivalently charged therapeutics for drug delivery applications.
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Affiliation(s)
- Sachit Shah
- Department of Materials Science and Engineering
- University of Central Florida
- Orlando
- USA
| | - Lorraine Leon
- Department of Materials Science and Engineering
- University of Central Florida
- Orlando
- USA
- NanoScience Technology Center
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13
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Nakahata R, Yusa SI. Preparation of Water-soluble Polyion Complex (PIC) Micelles Covered with Amphoteric Random Copolymer Shells with Pendant Sulfonate and Quaternary Amino Groups. Polymers (Basel) 2018; 10:E205. [PMID: 30966241 PMCID: PMC6415021 DOI: 10.3390/polym10020205] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 02/15/2018] [Accepted: 02/17/2018] [Indexed: 01/29/2023] Open
Abstract
An amphoteric random copolymer (P(SA)91) composed of anionic sodium 2-acrylamido-2-methylpropanesulfonate (AMPS, S) and cationic 3-acrylamidopropyl trimethylammonium chloride (APTAC, A) was prepared via reversible addition-fragmentation chain transfer (RAFT) radical polymerization. The subscripts in the abbreviations indicate the degree of polymerization (DP). Furthermore, AMPS and APTAC were polymerized using a P(SA)91 macro-chain transfer agent to prepare an anionic diblock copolymer (P(SA)91S67) and a cationic diblock copolymer (P(SA)91A88), respectively. The DP was estimated from quantitative 13C NMR measurements. A stoichiometrically charge neutralized mixture of the aqueous P(SA)91S67 and P(SA)91A88 formed water-soluble polyion complex (PIC) micelles comprising PIC cores and amphoteric random copolymer shells. The PIC micelles were in a dynamic equilibrium state between PIC micelles and charge neutralized small aggregates composed of a P(SA)91S67/P(SA)91A88 pair. Interactions between PIC micelles and fetal bovine serum (FBS) in phosphate buffered saline (PBS) were evaluated by changing the hydrodynamic radius (Rh) and light scattering intensity (LSI). Increases in Rh and LSI were not observed for the mixture of PIC micelles and FBS in PBS for one day. This observation suggests that there is no interaction between PIC micelles and proteins, because the PIC micelle surfaces were covered with amphoteric random copolymer shells. However, with increasing time, the diblock copolymer chains that were dissociated from PIC micelles interacted with proteins.
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Affiliation(s)
- Rina Nakahata
- Department of Applied Chemistry, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
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14
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Gineste S, Di Cola E, Amouroux B, Till U, Marty JD, Mingotaud AF, Mingotaud C, Violleau F, Berti D, Parigi G, Luchinat C, Balor S, Sztucki M, Lonetti B. Mechanistic Insights into Polyion Complex Associations. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02391] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Stéphane Gineste
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, Cedex 9 F-31062, Toulouse, France
| | - Emanuela Di Cola
- BioSoftMatter
Laboratorio Dip CBBM LITA, Universita di Milano, Via F lli Cervi
93 MI IT, 20090 Segrate, Italy
| | - Baptiste Amouroux
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, Cedex 9 F-31062, Toulouse, France
| | - Ugo Till
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, Cedex 9 F-31062, Toulouse, France
- Département
Sciences Agronomiques et Agroalimentaires, Université de Toulouse, Institut National Polytechnique de Toulouse - Ecole d’Ingénieurs de Purpan, 75 voie du TOEC, BP 57611, Cedex 03 F-31076 Toulouse, France
| | - Jean-Daniel Marty
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, Cedex 9 F-31062, Toulouse, France
| | - Anne-Françoise Mingotaud
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, Cedex 9 F-31062, Toulouse, France
| | - Christophe Mingotaud
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, Cedex 9 F-31062, Toulouse, France
| | - Frédéric Violleau
- Laboratoire
de Chimie Agro-industrielle (LCA), Université de Toulouse, INRA, INPT, INP-EI PURPAN, Toulouse, France
| | - Debora Berti
- Department
of Chemistry “Ugo Schiff”, University of Florence and CSGI, Via della Lastruccia 3, 50019 Sesto Fiorentino Firenze, Italy
| | - Giacomo Parigi
- Department
of Chemistry Ugo Schiff and Magnetic Resonance Center (CERM), University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino Firenze, Italy
| | - Claudio Luchinat
- Department
of Chemistry Ugo Schiff and Magnetic Resonance Center (CERM), University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino Firenze, Italy
| | - Stéphanie Balor
- Plateforme
METi, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Michael Sztucki
- European Synchrotron
Radiation Facility-71, avenue des Martyrs,
CS 40220, Cedex 9 38043 Grenoble, France
| | - Barbara Lonetti
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, Cedex 9 F-31062, Toulouse, France
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15
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di Gregorio MC, Gubitosi M, Travaglini L, Pavel NV, Jover A, Meijide F, Vázquez Tato J, Sennato S, Schillén K, Tranchini F, De Santis S, Masci G, Galantini L. Supramolecular assembly of a thermoresponsive steroidal surfactant with an oppositely charged thermoresponsive block copolymer. Phys Chem Chem Phys 2018; 19:1504-1515. [PMID: 27990552 DOI: 10.1039/c6cp05665b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular rearrangements are crucial in determining the response of stimuli sensitive soft matter systems such as those formed by mixtures of oppositely charged amphiphiles. Here mixtures of this kind were prepared by mixing the cationic block copolymer pAMPTMA30-b-pNIPAAM120 and an anionic surfactant obtained by the modification of the bile salt sodium cholate. As pure components, the two compounds presented a thermoresponsive self-assembly at around 30-35 °C; a micelle formation in the case of the copolymer and a transition from fibers to tubes in the case of the bile salt derivative. When both were present in the same solution they associated into mixed aggregates that showed complex thermoresponsive features. At room temperature, the core of the aggregate was comprised of a supramolecular twisted ribbon of the bile salt derivative. The block copolymers were anchored on the surface of this ribbon through electrostatic interactions between their charged blocks and the oppositely charged heads of the bile salt molecules. The whole structure was stabilized by a corona of the uncharged blocks that protruded into the surrounding solvent. By increasing the temperature to 30-34 °C the mixed aggregates transformed into rods with smooth edges that associated into bundles and clusters, which in turn induced clouding of the solution. Circular dichroism allowed us to follow progressive rearrangements of the supramolecular organization within the complex, occurring in the range of temperature of 20-70 °C.
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Affiliation(s)
- M C di Gregorio
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - M Gubitosi
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - L Travaglini
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - N V Pavel
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - A Jover
- Departamento de Química Física, Facultad de Ciencias, Universidad de Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo, Spain
| | - F Meijide
- Departamento de Química Física, Facultad de Ciencias, Universidad de Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo, Spain
| | - J Vázquez Tato
- Departamento de Química Física, Facultad de Ciencias, Universidad de Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo, Spain
| | - S Sennato
- Department of Physics and CNR-IPCF UOS Roma, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - K Schillén
- Division of Physical Chemistry, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - F Tranchini
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - S De Santis
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | | | - L Galantini
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
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16
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Harada A, Kataoka K. Polyion complex micelle formation from double-hydrophilic block copolymers composed of charged and non-charged segments in aqueous media. Polym J 2017. [DOI: 10.1038/pj.2017.67] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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18
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Bayati S, Bergquist KE, Zhu K, Nyström B, Skov Pedersen J, Galantini L, Schillén K. Mixed micelles of oppositely charged poly(N-isopropylacrylamide) diblock copolymers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24403] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Solmaz Bayati
- Division of Physical Chemistry, Department of Chemistry; Lund University; P.O. Box 124 SE-221 00 Lund Sweden
| | - Karl-Erik Bergquist
- Center for Analysis and Synthesis; Department of Chemistry, Lund University; P.O. Box 124 SE-221 00 Lund Sweden
| | - Kaizheng Zhu
- Department of Chemistry; University of Oslo; Postboks 1033 0315 Blindern Oslo Norway
| | - Bo Nyström
- Department of Chemistry; University of Oslo; Postboks 1033 0315 Blindern Oslo Norway
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Luciano Galantini
- Department of Chemistry; “La Sapienza” University of Rome; P. le A. Moro 5 00185 Rome Italy
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry; Lund University; P.O. Box 124 SE-221 00 Lund Sweden
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19
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Nakai K, Ishihara K, Yusa SI. Preparation of Giant Polyion Complex Vesicles (G-PICsomes) with Polyphosphobetaine Shells Composed of Oppositely Charged Diblock Copolymers. CHEM LETT 2017. [DOI: 10.1246/cl.170168] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Keita Nakai
- Department of Applied Chemistry, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280
| | - Kazuhiko Ishihara
- Department of Materials Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656
| | - Shin-ichi Yusa
- Department of Applied Chemistry, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280
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20
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Xiao J, Li Y, Huang Q. Application of Monte Carlo simulation in addressing key issues of complex coacervation formed by polyelectrolytes and oppositely charged colloids. Adv Colloid Interface Sci 2017; 239:31-45. [PMID: 27265512 DOI: 10.1016/j.cis.2016.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/18/2016] [Accepted: 05/21/2016] [Indexed: 10/21/2022]
Abstract
This paper reviews the recent advance of Monte Carlo (MC) simulation in addressing key issues of complex coacervation between polyelectrolytes and oppositely charged colloids. Readers were first supplied with a brief overview of current knowledge and experimental strategies in the study of complex coacervation. In the next section, the general MC simulation procedures as well as representative strategies applied in complex coacervation were summarized. The unique contributions of MC simulation in either capturing delicate features, easing the experimental trials or proving the concept were then elucidated through the following aspects: i) identify phase boundary and decouple interaction contributions; ii) clarify composition distribution and internal structure; iii) predict the influences of physicochemical conditions on complex coacervation; iv) delineate the mechanisms for "binding on the wrong side of the isoelectric point". Finally, current challenges as well as prospects of MC simulation in complex coacervation are also discussed. The ultimate goal of this review is to provide readers with basic guideline for synergistic design of experiments in combination with MC simulation, and deliver convincing interpretation and reliable prediction for the structure and behavior in polyelectrolyte-macroion complex coacervation.
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21
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Frit inlet field-flow fractionation techniques for the characterization of polyion complex self-assemblies. J Chromatogr A 2017; 1481:101-110. [DOI: 10.1016/j.chroma.2016.12.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 12/15/2016] [Accepted: 12/16/2016] [Indexed: 01/15/2023]
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22
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Naoyama K, Mori T, Katayama Y, Kishimura A. Fabrication of Dendrimer-Based Polyion Complex Submicrometer-Scaled Structures with Enhanced Stability under Physiological Conditions. Macromol Rapid Commun 2016; 37:1087-93. [DOI: 10.1002/marc.201600171] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 04/27/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Kenshiro Naoyama
- Graduate School of Systems Life Sciences; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
| | - Takeshi Mori
- Graduate School of Systems Life Sciences; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Department of Applied Chemistry; Faculty of Engineering; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Center for Future Chemistry; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
| | - Yoshiki Katayama
- Graduate School of Systems Life Sciences; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Department of Applied Chemistry; Faculty of Engineering; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Center for Future Chemistry; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Center for Molecular Systems; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Center for Advanced Medical Innovation; Kyushu University; 3-1-1 Maedashi Higashi-ku Fukuoka 812-8582 Japan
| | - Akihiro Kishimura
- Graduate School of Systems Life Sciences; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Department of Applied Chemistry; Faculty of Engineering; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
- Center for Molecular Systems; Kyushu University; 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan
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23
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Thermo-sensitive complex micelles from sodium alginate- graft -poly( N -isopropylacrylamide) for drug release. Int J Biol Macromol 2016; 86:296-301. [DOI: 10.1016/j.ijbiomac.2016.01.066] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/18/2016] [Accepted: 01/20/2016] [Indexed: 11/22/2022]
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24
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Ohno S, Ishihara K, Yusa SI. Formation of Polyion Complex (PIC) Micelles and Vesicles with Anionic pH-Responsive Unimer Micelles and Cationic Diblock Copolymers in Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3945-3953. [PMID: 27048989 DOI: 10.1021/acs.langmuir.6b00637] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A random copolymer (p(A/MaU)) of sodium 2-(acrylamido)-2-methylpropanesulfonate (AMPS) and sodium 11-methacrylamidoundecanate (MaU) was prepared via conventional radical polymerization, which formed a unimer micelle under acidic conditions due to intramolecular hydrophobic interactions between the pendant undecanoic acid groups. Under basic conditions, unimer micelles were opened up to an expanded chain conformation by electrostatic repulsion between the pendant sulfonate and undecanoate anions. A cationic diblock copolymer (P163M99) consisting of poly(3-(methacrylamido)propyl)trimethylammonium chloride (PMAPTAC) and hydrophilic polybetaine, 2-(methacryloyloxy)ethylphosphorylcholine (MPC), blocks was prepared via controlled radical polymerization. Mixing of p(A/MaU) and P163M99 in 0.1 M aqueous NaCl under acidic conditions resulted in the formation of spherical polyion complex (PIC) micelles and vesicles, depending on polymer concentration before mixing. Shapes of the PIC micelles and vesicles changed under basic conditions due to collapse of the charge balance between p(A/MaU) and P163M99. The PIC vesicles can incorporate nonionic hydrophilic guest molecules, and the PIC micelles and vesicles can accept hydrophobic guest molecules in the hydrophobic core formed from p(A/MaU).
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Affiliation(s)
- Sayaka Ohno
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo , 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Kazuhiko Ishihara
- Department of Materials Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo , 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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25
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Šindelka K, Limpouchová Z, Lísal M, Procházka K. The electrostatic co-assembly in non-stoichiometric aqueous mixtures of copolymers composed of one neutral water-soluble and one polyelectrolyte (either positively or negatively charged) block: a dissipative particle dynamics study. Phys Chem Chem Phys 2016; 18:16137-51. [DOI: 10.1039/c6cp01047d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrostatic co-assembly in non-stoichiometric aqueous mixtures of diblock copolymers.
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Affiliation(s)
- Karel Šindelka
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
| | - Zuzana Limpouchová
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
| | - Martin Lísal
- Laboratory of Aerosols Chemistry and Physics
- Institute of Chemical Process Fundamentals of the CAS
- 165 02 Prague 6-Suchdol
- Czech Republic
- Department of Physics
| | - Karel Procházka
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
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26
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Herzberger J, Frey H. Epicyanohydrin: Polymerization by Monomer Activation Gives Access to Nitrile-, Amino-, and Carboxyl-Functional Poly(ethylene glycol). Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02178] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jana Herzberger
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Graduate
School
Materials Science in Mainz, Staudinger
Weg 9, 55128 Mainz, Germany
| | - Holger Frey
- Institute
of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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27
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Wu Q, Tang X, Liu X, Hou Y, Li H, Yang C, Yi J, Song X, Zhang G. Thermo/pH Dual Responsive Mixed-Shell Polymeric Micelles Based on the Complementary Multiple Hydrogen Bonds for Drug Delivery. Chem Asian J 2015; 11:112-9. [PMID: 26377387 DOI: 10.1002/asia.201500847] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Indexed: 12/23/2022]
Abstract
Thermo/pH dual responsive mixed-shell polymeric micelles based on multiple hydrogen bonding were prepared by self-assembly of diaminotriazine-terminated poly(ɛ-caprolactone) (DAT-PCL), uracil-terminated methoxy poly(ethylene glycol) (MPEG-U), and uracil-terminated poly(N-vinylcaprolactam) (PNVCL-U) at room temperature. PCL acted as the core and MPEG/PNVCL as the mixed shell. Increasing the temperature, PNVCL collapsed and enclosed the PCL core, while MPEG penetrated through the PNVCL shell, thereby leading to the formation of MPEG channels on the micelles surface. The low cytotoxicity of the mixed micelles was confirmed by an MTT assay against BGC-823 cells. Studies on the in vitro drug release showed that a much faster release rate was observed at pH 5.0 compared to physiological pH, owing to the dissociation of hydrogen bonds. Therefore, the mixed-shell polymeric micelles would be very promising candidates in drug delivery systems.
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Affiliation(s)
- Qiuhua Wu
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - Xiuping Tang
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - Xue Liu
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - Yu Hou
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - He Li
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - Chen Yang
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - Jie Yi
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - Ximing Song
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China
| | - Guolin Zhang
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, No.66 Chongshan Mid-Road, Huanggu District, Shenyang, 110036, Liaoning Province, P. R. China.
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28
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Zhang L, Wang J, Ni C, Zhang Y, Shi G. Preparation of polyelectrolyte complex nanoparticles of chitosan and poly(2-acry1amido-2-methylpropanesulfonic acid) for doxorubicin release. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:724-9. [PMID: 26478364 DOI: 10.1016/j.msec.2015.09.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 08/15/2015] [Accepted: 09/10/2015] [Indexed: 11/30/2022]
Abstract
A new kind of polyelectrolyte complex (PEC) based on cationic chitosan (CS) and anionic poly(2-acry1amido-2-methylpropanesulfonic acid) (PAMPS) was prepared using a polymer-monomer pair reaction system. Chitosan was mixed with 2-acry1amido-2-methylpropanesulfonic acid) (AMPS) in an aqueous solution, followed by polymerization of AMPS. The complex was formed by electrostatic interaction of NH3(+) groups of CS and SO3(-) groups of AMPS, leading to a formation of complex nanoparticles of CS-PAMPS. A series of nanoparticles were obtained by changing the weight ratio of CS to AMPS, the structure and properties of nanoparticles were investigated. It was observed that the nanoparticles possessed spherical morphologies with average diameters from 255 nm to 390 nm varied with compositions of the nanoparticles. The nanoparticles were used as drug vehicles for doxorubicin, displaying relative high drug loading rate and encapsulation rate. The vitro release profiles revealed that the drug release could be controlled by adjusting pH of the release media. The nanoparticles demonstrated apparent advantages such as simple preparation process, free of organic solvents, size controllable, good biodegradability and biocompatibility, and they could be potentially used in drug controlled release field.
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Affiliation(s)
- Liping Zhang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Jie Wang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Caihua Ni
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
| | - Yanan Zhang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Gang Shi
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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29
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Yin T, Liu X, Wang J, An Y, Zhang Z, Shi L. Thermosensitive mixed shell polymeric micelles decorated with gold nanoparticles at the outmost surface: tunable surface plasmon resonance and enhanced catalytic properties with excellent colloidal stability. RSC Adv 2015. [DOI: 10.1039/c5ra06021d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold NPs are coupled to the outermost surface of mixed shell polymeric micelles with a PEG/PNIPAM shell, exhibit thermoresponsive surface plasmon resonance, enhanced catalytic properties and excellent colloidal stability.
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Affiliation(s)
- Tao Yin
- Key Laboratory of Functional Polymer Materials of Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin
| | - Xue Liu
- Key Laboratory of Functional Polymer Materials of Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin
| | - Jianzu Wang
- Key Laboratory of Functional Polymer Materials of Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin
| | - Yingli An
- Key Laboratory of Functional Polymer Materials of Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin
| | - Zhenkun Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin
| | - Linqi Shi
- Key Laboratory of Functional Polymer Materials of Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin
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30
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Sakamoto S, Sanada Y, Sakashita M, Nishina K, Nakai K, Yusa SI, Sakurai K. Chain-length dependence of polyion complex architecture bearing phosphobetaine block explored using SAXS and FFF-MALS. Polym J 2014. [DOI: 10.1038/pj.2014.25] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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31
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Ebara M, Kotsuchibashi Y, Uto K, Aoyagi T, Kim YJ, Narain R, Idota N, Hoffman JM. Smart Nanoassemblies and Nanoparticles. NIMS MONOGRAPHS 2014. [DOI: 10.1007/978-4-431-54400-5_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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De Santis S, Diociaiuti M, Cametti C, Masci G. Hyaluronic acid and alginate covalent nanogels by template cross-linking in polyion complex micelle nanoreactors. Carbohydr Polym 2014; 101:96-103. [DOI: 10.1016/j.carbpol.2013.09.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 08/25/2013] [Accepted: 09/13/2013] [Indexed: 10/26/2022]
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Matsuyama T, Shiga H, Asoh TA, Kikuchi A. Thermoresponsive nanospheres with a regulated diameter and well-defined corona layer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:15770-15777. [PMID: 24295536 DOI: 10.1021/la4034468] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In the present work, we prepared core-corona-type nanospheres bearing a thermoresponsive polymer with a controlled chain length on their surface. The corona layers were composed of poly(N-isopropylacrylamide) (PNIPAAm) chains (Mn = 3000-18,000) with a narrow polydispersity index prepared by atom-transfer radical polymerization (ATRP). Nanospheres were prepared by dispersion copolymerization of styrene with the PNIPAAm macromonomer in a polar solvent. The obtained nanospheres were monodisperse in diameter. The diameter of the nanospheres was regulated either by the number or chain length of the PNIPAAm macromonomers. In fact, the nanosphere diameter was regulated from ca. 100 to 1000 nm. When two types of PNIPAAm macromonomers are used, the obtained nanospheres have two different kinds of PNIPAAm on their surface. The surface of the nanospheres was observed to be thermoresponsive nanosphere in 0, 50, 100 mmol L(-1) NaCl aqueous solution. The nanosphere diameter and the surface-grafted polymer were concurrently adjusted for use in biomedical applications.
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Affiliation(s)
- Takuya Matsuyama
- Department of Materials Science and Technology, Tokyo University of Science , 6-3-1 Niijuku, Katsushika-ku, Tokyo, Japan
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pH-sensitive polyelectrolyte complex micelles assembled from CS-g-PNIPAM and ALG-g-P(NIPAM-co-NVP) for drug delivery. Int J Biol Macromol 2013; 62:203-10. [DOI: 10.1016/j.ijbiomac.2013.08.041] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 08/15/2013] [Accepted: 08/23/2013] [Indexed: 11/22/2022]
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Nakai K, Nishiuchi M, Inoue M, Ishihara K, Sanada Y, Sakurai K, Yusa SI. Preparation and characterization of polyion complex micelles with phosphobetaine shells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:9651-9661. [PMID: 23845059 DOI: 10.1021/la401063b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A pair of oppositely charged diblock copolymers, poly(2-(methacryloyloxy)ethyl phosphorylcholine)-block-poly((3-(methacryloylamino)propyl)trimethylammonium chloride) (PMPC-b-PMAPTAC) and poly(2-(methacryloyloxy)ethyl phosphorylcholine)-block-poly(sodium 2-(acrylamido)-2-methylpropanesulfonate) (PMPC-b-PAMPS), was prepared via reversible addition-fragmentation chain transfer radical polymerization using a PMPC-based macro chain transfer agent. The pendant phosphorylcholine group in the hydrophilic PMPC block has anionic phosphate and cationic quaternary amino groups, which are neutralized within the pendant group. Therefore, the mixing of aqueous solutions of PMPC-b-PMAPTAC and PMPC-b-PAMPS leads to the spontaneous formation of simple core-shell spherical polyion complex (PIC) micelles comprising of a segregated PIC core and PMPC shells. The PIC micelles were characterized using (1)H NMR spin-spin (T2) and spin-lattice relaxation times (T1), diffusion-ordered NMR spectroscopy, static light scattering, dynamic light scattering (DLS), and transmission electron microscopy techniques. The hydrodynamic size of the PIC micelle depended on the mixing ratio of PMPC-b-PMAPTAC and PMPC-b-PAMPS; the maximum size occurred at the mixing ratio yielding stoichiometric charge neutralization. The PIC micelles disintegrated to become unimers with the addition of salts.
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Affiliation(s)
- Keita Nakai
- Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo , 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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Liu X, Gao H, Huang F, Pei X, An Y, Zhang Z, Shi L. Structure change of mixed shell polymeric micelles and its interaction with bio-targets as probed by the 1-anilino-8-naphthalene sulfonate (ANS) fluorescence. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Korchagina EV, Qiu XP, Winnik FM. Effect of Heating Rate on the Pathway for Vesicle Formation in Salt-Free Aqueous Solutions of Thermosensitive Cationic Diblock Copolymers. Macromolecules 2013. [DOI: 10.1021/ma302666e] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Evgeniya V. Korchagina
- Department of Chemistry and
Faculty of Pharmacy, University of Montreal, CP 6128 Succursale Centre Ville, Montreal, QC H3C3J7, Canada
| | - Xing-Ping Qiu
- Department of Chemistry and
Faculty of Pharmacy, University of Montreal, CP 6128 Succursale Centre Ville, Montreal, QC H3C3J7, Canada
| | - Françoise M. Winnik
- Department of Chemistry and
Faculty of Pharmacy, University of Montreal, CP 6128 Succursale Centre Ville, Montreal, QC H3C3J7, Canada
- WPI International Center for
Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki
305-0044 Japan
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Grieshaber SE, Paik BA, Bai S, Kiick KL, Jia X. Nanoparticle Formation from Hybrid, Multiblock Copolymers of Poly(Acrylic Acid) and VPGVG Peptide. SOFT MATTER 2013; 9:1589-1599. [PMID: 23976897 PMCID: PMC3749889 DOI: 10.1039/c2sm27496e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Elastin-mimetic hybrid copolymers with an alternating molecular architecture were synthesized via the step growth polymerization of azide-functionalized, telechelic poly(tert-butyl acrylate) (PtBA) and an alkyne-terminated, valine and glycine-rich peptide with a sequence of (VPGVG)2 (VG2). The resultant hybrid copolymer, [PtBA-VG2]n, contains up to six constituent building blocks and has a polydispersity index (PDI) of ~1.9. Trifluoroacetic acid (TFA) treatment of [PtBA-VG2]n gave rise to an alternating copolymer of poly(acrylic acid) (PAA) and VG2 ([PAA-VG2]n). The modular design permits facile adjustment of the copolymer composition by varying the molecular weight of PAA (22 and 63 repeat units). Characterization by dynamic light scattering indicated that the multiblock copolymers formed discrete nanoparticles at room temperature in aqueous solution at pH 3.8, with an average diameter of 250-270 nm and a particle size distribution of 0.34 for multiblock copolymers containing PAA22 and 0.17 for those containing PAA63. Upon increasing the pH to 7.4, both types of particles were able to swell without being disintegrated, reaching an average diameter of 285-300 nm for [PAA22-VG2]n and 330-350 nm for [PAA63-VG2]n, respectively. The nanoparticles were not dissociated upon the addition of urea, further confirming their unusual stability. The nanoparticles were capable of sequestering a hydrophobic fluorescent dye (pyrene), and the critical aggregation concentration (CAC) was determined to be 1.09 × 10-2 or 1.05 × 10-2 mg/mL for [PAA22-VG2]n and [PAA63-VG2]n, respectively. We suggest that the multiblock copolymers form through collective H-bonding and hydrophobic interactions between the PAA and VG2 peptide units, and that the unusual stability of the multiblock nanoparticles is conferred by the multiblock architecture. These hybrid multiblock copolymers are potentially useful as pH-responsive drug delivery vehicles, with the possibility of drug loading through concerted H-bonds and hydrophobic interactions.
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Affiliation(s)
- Sarah E. Grieshaber
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
| | - Bradford A. Paik
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
| | - Shi Bai
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
- Biomedical Engineering Program, University of Delaware, Newark, DE, 19716, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716, USA
- Biomedical Engineering Program, University of Delaware, Newark, DE, 19716, USA
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Oikonomou EK, Bokias G, Iliopoulos I, Kallitsis JK. Sequential Association of Anionic/Thermosensitive Diblock Copolymers with Cationic Surfactants. Macromolecules 2013. [DOI: 10.1021/ma302535k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Evdokia K. Oikonomou
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
- Foundation of Research and Technology
Hellas, Institute of Chemical Engineering Sciences (ICE/HT FORTH), P.O. Box 1414, GR-26504 Patras, Greece
| | - Georgios Bokias
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Ilias Iliopoulos
- Matiere Molle et Chimie, ESPCI ParisTech - CNRS, UMR-7167, 75005 Paris, France
| | - Joannis K. Kallitsis
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
- Foundation of Research and Technology
Hellas, Institute of Chemical Engineering Sciences (ICE/HT FORTH), P.O. Box 1414, GR-26504 Patras, Greece
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Wang Y, Zhang X, Yu P, Li C. Glycopolymer micelles with reducible ionic cores for hepatocytes-targeting delivery of DOX. Int J Pharm 2013; 441:170-80. [DOI: 10.1016/j.ijpharm.2012.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 10/23/2012] [Accepted: 12/03/2012] [Indexed: 10/27/2022]
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41
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Wang Y, Zhang X, Mu J, Li C. Synthesis and pH/sugar/salt-sensitivity study of boronate crosslinked glycopolymer nanoparticles. NEW J CHEM 2013. [DOI: 10.1039/c2nj40998d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Mori H, Saito Y, Takahashi E, Nakabayashi K, Onuma A, Morishima M. Controlled synthesis of sulfonated block copolymers having thermoresponsive property by RAFT polymerization of vinyl sulfonate esters. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.06.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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43
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Kulthe SS, Choudhari YM, Inamdar NN, Mourya V. Polymeric micelles: authoritative aspects for drug delivery. Des Monomers Polym 2012. [DOI: 10.1080/1385772x.2012.688328] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- Sushant S. Kulthe
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Yogesh M. Choudhari
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Nazma N. Inamdar
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Vishnukant Mourya
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
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Inoue M, Noda K, Yusa SI. Hollow nanoparticles prepared from pH-responsive template polymer micelles. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Masci G, Ladogana RD, Cametti C. Assemblies of Thermoresponsive Diblock Copolymers: Micelle and Vesicle Formation Investigated by Means of Dielectric Relaxation Spectroscopy. J Phys Chem B 2012; 116:2121-30. [DOI: 10.1021/jp212065c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- G. Masci
- Department
of Chemistry, and ‡Department of Physics and CNR-INFM-SOFT, “La Sapienza” University of Rome, Piazzale
A. Moro 5, I-00185 Rome, Italy
| | - R. D. Ladogana
- Department
of Chemistry, and ‡Department of Physics and CNR-INFM-SOFT, “La Sapienza” University of Rome, Piazzale
A. Moro 5, I-00185 Rome, Italy
| | - C. Cametti
- Department
of Chemistry, and ‡Department of Physics and CNR-INFM-SOFT, “La Sapienza” University of Rome, Piazzale
A. Moro 5, I-00185 Rome, Italy
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Liu Y, Li C, Wang HY, Zhang XZ, Zhuo RX. Synthesis of thermo- and pH-sensitive polyion complex micelles for fluorescent imaging. Chemistry 2012; 18:2297-304. [PMID: 22250041 DOI: 10.1002/chem.201102704] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Indexed: 11/10/2022]
Abstract
Two thermo- and pH-sensitive polypeptide-based copolymers, poly(N-isopropylacrylamide-co-N-hydroxymethylacrylamide)-b-poly(L-lysine) (P(NIPAAm-co-HMAAm)-b-PLL, P1) and poly(N-isopropylacrylamide-co-N-hydroxymethylacrylamide)-b-poly(glutamic acid) (P(NIPAAm-co-HMAAm)-b-PGA, P2), have been designed and synthesized by the ring-opening anionic polymerization of N-carboxyanhydrides (NCA) with amino-terminated P(NIPAAm-co-HMAAm). It was found that the block copolymers exhibit good biocompatibility and low toxicity. As a result of electrostatic interactions between the positively charged PLL and negatively charged PGA, P1 and P2 formed polyion complex (PIC) micelles consisting of polyelectrolyte complex cores and P(NIPAAm-co-HMAAm) shells in aqueous solution. The thermo- and pH-sensitivity of the PIC micelles were studied by UV/Vis spectrophotometry, dynamic light scattering (DLS), and transmission electron microscopy (TEM). Moreover, fluorescent PIC micelles were achieved by introducing two fluorescent molecules with different colors. Photographs and confocal laser scanning microscopy (CLSM) showed that the fluorescence-labeled PIC micelles exhibit thermo- and pH-dependent fluorescence, which may find wide applications in bioimaging in complicated microenvironments.
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Affiliation(s)
- Yun Liu
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, PR China
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47
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Maggi F, Ciccarelli S, Diociaiuti M, Casciardi S, Masci G. Chitosan nanogels by template chemical cross-linking in polyion complex micelle nanoreactors. Biomacromolecules 2011; 12:3499-507. [PMID: 21866922 DOI: 10.1021/bm201015h] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Chitosan covalent nanogels cross-linked with genipin were prepared by template chemical cross-linking of chitosan in polyion complex micelle (PIC) nanoreactors. By using this method, we were able to prepare chitosan nanogels using only biocompatible materials without organic solvents. PIC were prepared by interaction between chitosan (X(n) = 23, 44, and 130) and block copolymer poly(ethylene oxide)-block-poly[sodium 2-(acrylamido)-2-methylpropanesulfonate] (PEO-b-PAMPS) synthesized by single-electron transfer-living radical polymerization (SET-LRP). PIC with small size (diameter about 50 nm) and low polydispersity were obtained up to 5 mg/mL. After cross-linking of chitosan with genipin, the nanoreactors were dissociated by adding NaCl. The dissociation of the nanoreactors and the formation of the nanogels were confirmed by (1)H NMR, DLS, and TEM. The size of the smallest nanogels was about 50 nm in the swollen state and 20 nm in the dry state. The amount of genipin used during reticulation was an important parameter to modulate the size of the nanogels in solution.
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Affiliation(s)
- Flavia Maggi
- Department of Chemistry, Sapienza University of Rome, P.le A Moro 5, 00185 Rome, Italy
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48
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Silica particles coated with zwitterionic polymer brush: Formation of colloidal crystals and anti-biofouling properties in aqueous medium. Colloids Surf B Biointerfaces 2011; 84:111-6. [DOI: 10.1016/j.colsurfb.2010.12.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Accepted: 12/14/2010] [Indexed: 11/22/2022]
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49
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Wei H, Ravarian R, Dehn S, Perrier S, Dehghani F. Construction of temperature responsive hybrid crosslinked self-assemblies based on PEG-b
-P(MMA-co
-MPMA)-b
-PNIPAAm triblock copolymer: ATRP synthesis and thermoinduced association behavior. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24606] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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50
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Masci G, De Santis S, Cametti C. Dielectric Properties of Micellar Aggregates Due to the Self-Assembly of Thermoresponsive Diblock Copolymers. J Phys Chem B 2011; 115:2196-204. [DOI: 10.1021/jp111135f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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