Self-association of water-soluble fluorinated diblock copolymers in solutions

Itô, Hiroshi; Imae, Toyoko; Nakamura, Tetsuya; Sugiura, Motoyuki; Oshibe, Yoshihiro

doi:10.1016/j.jcis.2004.03.046

Cited by 21 publications

(17 citation statements)

References 38 publications

(53 reference statements)

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“…Block copolymers with perfluoroalkyl side chains are known to be an amphiphilic surfactant and form the micelles in many solutions such as aqueous [26,27] and organic solvents, due to the poor solubility of the perfluoroalkyl side chains. In this study, HCFC-225 dissolved both segments, while the PFEMA segments were insoluble in chloroform.…”

Section: Resultsmentioning

confidence: 99%

“…For example, there are only a few solvents such as fluorinated solvents and supercritical carbon dioxide for dissolving them [16]. To overcome these problems, polymers with perfluoroalkyl side chains and their copolymers have been extensively investigated [17][18][19][20][21][22][23][24][25][26][27][28][29][30]. We also synthesized random and diblock copolymers, composed of methyl methacrylate and 2-perfluorooctylethyl methacrylate (PMMA-r-PFEMA, PMMA-b-PFEMA, respectively), with the PFEMA content around 15 mol% [31].…”

Section: Introductionmentioning

confidence: 99%

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Surface properties and structures of diblock copolymer and homopolymer with perfluoroalkyl side chains

Nishino

Urushihara

Meguro

et al. 2005

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surface properties and structures of diblock copolymer and homopolymer with perfluoroalkyl side chains

Nishino

Urushihara

Meguro

et al. 2005

Journal of Colloid and Interface Science

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“…The extreme difference in their polarity between the phospholipid monomer and the fluorinated monomer could lead to a stable and distinct phase separation in solution or on a solid surface. On the other hand, the fluorinated polymers have found applications for surface modification in the fields of biomaterials because of their specific characteristics, such as good friction ability, low surface tension, higher affinity for oxygen, and chemical and thermal stability 22–29. 2,2,2‐Trifluoroethyl methacrylate (TFEMA) has a simple chemical structure and suitable polymerization ability by a conventional radical polymerization, but the trifluoromethyl group in the side chain may show a significant effect as a fluorocarbon.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of sequence‐controlled copolymers from extremely polar and apolar monomers by living radical polymerization and their phase‐separated structures

Inoue

Watanabe

Takai

et al. 2005

J. Polym. Sci. A Polym. Chem.

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A series of copolymers composed of two monomer units having a polar phosphorylcholine group and an apolar fluorocarbon group with a controlled monomer unit sequence were synthesized by a reversible addition‐fragmentation chain transfer (RAFT) living radical polymerization method. 2‐Methacryloyloxyethyl phosphorylcholine (MPC) and 2,2,2‐trifluoroethyl methacrylate (TFEMA) were selected as the monomers, because they have disparate polarity. Furthermore, to investigate the influence of the monomer unit sequence in a polymer chain on the phase‐separated structure in the bulk and surface structure, copolymers having a continuous change in the monomer unit composition along the polymer chain (gradient copolymer) were synthesized, as well as random and block copolymers. The analysis of instantaneous composition revealed a continuous change in the monomer unit composition in the gradient copolymer and the statistical monomer unit sequence in the random copolymer. Thermal analysis assumed that the gradient sequence of the monomer unit would make the phase‐separated structure in the bulk ambiguous, while the well‐defined and monodispersive block sequence would undergo the distinct phase‐separation due to the extreme difference in the polarity of the component monomer units. The preliminary surface characterization of the synthesized polymers indicated the monomer unit sequence in the polymer chain would much influence on the surface structure. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 6073–6083, 2005

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“…These values were close to those estimated from light scattering measurements. The 2 R h values for aggregates formed from P 98 D 3 and P 296 D 1 were 312 and 230 nm, respectively …”

Section: Resultsmentioning

confidence: 97%

Preparation of amphiphilic diblock copolymers with pendant hydrophilic phosphorylcholine and hydrophobic dendron groups and their self-association behavior in water

Osawa

Imae

Ujihara

et al. 2013

J. Polym. Sci. Part A: Polym. Chem.

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Generation 3.5 poly(amido amine) dendron (G3.5) with 16 n‐butyl terminal groups containing an acrylamide monomer (AaUG3.5) was prepared by condensation between an amino focal group in G3.5 and 11‐acrylamidoundecanoic acid. AaUG3.5 was polymerized using poly(2‐methacryloyloxyethyl phosphorylcholine) (pMPC)‐based macro‐chain transfer agent via reversible addition‐fragmentation chain transfer (RAFT) radical polymerization to obtain amphiphilic diblock copolymers with different compositions. The diblock copolymers (PmDn) were composed of a hydrophilic pMPC block and hydrophobic pendant dendron‐bearing block, where P and D represent pMPC and pAaUG3.5, respectively, and m and n represent the degree of polymerization for each block, respectively. P296D1 and P98D3 formed vesicles and large compound micelles and vesicles, respectively, which was confirmed by light scattering measurements and transmission electron microscopic (TEM) observations. The large compound micelles formed from P98D3 could not incorporate hydrophilic guest polymer molecules, because the aggregates did not have a hydrophilic hollow core. In contrast, the vesicles formed from P269D1 could incorporate hydrophilic guest polymer molecules into the hollow core. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 4923–4931

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Self-association of water-soluble fluorinated diblock copolymers in solutions

Cited by 21 publications

References 38 publications

Surface properties and structures of diblock copolymer and homopolymer with perfluoroalkyl side chains

Surface properties and structures of diblock copolymer and homopolymer with perfluoroalkyl side chains

Synthesis of sequence‐controlled copolymers from extremely polar and apolar monomers by living radical polymerization and their phase‐separated structures

Preparation of amphiphilic diblock copolymers with pendant hydrophilic phosphorylcholine and hydrophobic dendron groups and their self-association behavior in water

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