Induced Circular Dichroism of Disperse Red Dye in the Self-Assembled Nanoparticles Composed of Poly(γ-benzyl <scp>l</scp>-glutamate) and Poly(<i>N</i>-isopropylacrylamide) and Its Phase Transition by Temperature

Chung, Taek Woong; Kim, Beom Jun; Park, Soo Young; Akaike, Toshihiro; Nah, Jae Woon; Cho, Chong Su

doi:10.1021/ma000480e

Cited by 10 publications

(7 citation statements)

References 24 publications

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“…[239][240][241] The azobenzene moiety can also be incorporated into a chiral diblock copolymer, and the result is a chirality transfer from the matrix to the aggregated dye. 242 Helical polypeptides can contain azobenzene groups in the side chain. The photoinduced isomerization of the azobenzene groups can thus change the helicity of the main chain.…”

Section: B Helical Structure Of Macromoleculesmentioning

confidence: 99%

“…A nonpolymer system has been demonstrated which the color change takes place above 87 °C, and is “fixed” by rapid cooling . The use of chiral azobenzene-based dopant allows reversible photoswitching as well. − The azobenzene moiety can also be incorporated into a chiral diblock copolymer, and the result is a chirality transfer from the matrix to the aggregated dye …”

Section: B Helical Structure Of Macromoleculesmentioning

confidence: 99%

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Photoinduced Motions in Azo-Containing Polymers

2002

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Section: B Helical Structure Of Macromoleculesmentioning

confidence: 99%

Section: B Helical Structure Of Macromoleculesmentioning

confidence: 99%

Photoinduced Motions in Azo-Containing Polymers

2002

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“…The block copolymer self‐assembled into core/shell morphology in aqueous media . Based on the above amphiphilic structure and methodology, they found that the chiral PBLG core in the self‐assembled core/shell nanoparticles induced the CD of aggregated disperse red dye . They also designed PBLG/PEO/PBLG triblock copolymer which could self‐assemble into core/shell structure in DMF/water system .…”

Section: Particles Of Chiral Polymersmentioning

confidence: 99%

Optically Active Particles of Chiral Polymers

Song

Liu

et al. 2013

Macromol. Rapid Commun.

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Particles constructed by chiral polymers (defined as PCPs) have emerged as a rapidly expanding research field in recent years because of their potentially wide-ranging applications in asymmetric catalysis, enantioselective crystallization, enantioselective release, amongst many others. The particles show considerable optical activity, due to the chirality of the corresponding polymers from which the particles are derived. This review article presents an overview on PCPs with emphasis on our group's recent achievements in the preparation of PCPs derived from optically active helical polymers and their applications. PCPs can be prepared via emulsion polymerization, precipitation polymerization, and suspension polymerization by starting from monomers. Emulsification of preformed chiral polymers and self-assembly approaches also can lead to PCPs. Chiral polymer-based core/shell particles, hollow particles, and magnetic particles are also covered because of their remarkable properties and significant potential applications.

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“…Conventional methods to synthesize polymeric nanoparticles often require the use of organic solvents/surfactants, and intricate techniques [10] and methodologies. In this study, we use environmentally friendly, or "green chemistry" methods to prepare our nanogels [8,9,12,13]. Many researchers have prepared nanoparticles using intramolecular cross-linking between several structural moieties.…”

Section: Introduction P Olymeric Nanoparticles (Nanogels) Have Potentmentioning

confidence: 99%

Synthesis of Polyacrylamide Nanogels by Intramolecular Disulfide Cross-linking

Aliyar

Hamilton

Remsen

et al. 2005

Journal of Bioactive and Compatible Polymers

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Nondegradable polyamides with protein-like properties were designed and prepared as a copolymeric hydrogel by the free-radical polymerization of acrylamide with a disulfide-containing cross-linking agent, N, Downloaded from NЈ-bisacryloylcystamine. Copolyacrylamides containing pendent thiol groups (BSH) were obtained after reduction of the disulfide bonds in the hydrogel, followed by precipitation in methanol. Ellman's analysis and gel-permeation chromatography (GPC) were used to characterize the copolymer. Re-dissolution of the copolymer in water at very dilute concentrations, followed by air oxidation under physiological conditions (pH 7.5), resulted in nanoparticles (nanogels). The dilute concentration favored intramolecular disulfide crosslinking in the polymer chain, resulting primarily in a single-chain nanogel. Nanogel formation was confirmed and characterized using GPC, dynamic light scattering and atomic force microscopy. The size of the nanogels ranged from 20-200 nm.

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Induced Circular Dichroism of Disperse Red Dye in the Self-Assembled Nanoparticles Composed of Poly(γ-benzyl l-glutamate) and Poly(N-isopropylacrylamide) and Its Phase Transition by Temperature

Cited by 10 publications

References 24 publications

Photoinduced Motions in Azo-Containing Polymers

Photoinduced Motions in Azo-Containing Polymers

Optically Active Particles of Chiral Polymers

Synthesis of Polyacrylamide Nanogels by Intramolecular Disulfide Cross-linking

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