Molecular shape of poly(2-ethyl-2-oxazoline) chains in THF

Sung, J.H.; Lee, D.C.

doi:10.1016/s0032-3861(00)00861-2

Cited by 30 publications

(30 citation statements)

References 39 publications

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“…9,17 The indirect estimations of Kuhn segment length was previously reported by Sung and Lee for PEtOx fractions with moderate dispersity in THF solutions showing ambiguous scaling indexes data. 20 Nevertheless the earlier found value is in a good agreement with the value obtained in our study for PEtOx in PBS at 37 o C.…”

supporting

confidence: 92%

Conformational properties of biocompatible poly(2-ethyl-2-oxazoline)s in phosphate buffered saline

et al. 2018

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supporting

confidence: 92%

Conformational properties of biocompatible poly(2-ethyl-2-oxazoline)s in phosphate buffered saline

et al. 2018

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“…For other polymers, g η are close to the g values for star-shaped macromolecules with long arms. The Kuhn segment length A PEtOx for linear PEtOz is 1.4-1.8 nm [59,69]. Therefore, taking into account the above comments on the hydrodynamic and conformational characteristics of polypeptoids, it can be assumed that the studied polymer stars can be considered as long-arm stars, if the arms contain six or more Kuhn segments.…”

Section: Polymer L Arm /R H-d L Arm /Amentioning

confidence: 99%

Synthesis and Conformational Characteristics of Thermosensitive Star-Shaped Six-Arm Polypeptoids

et al. 2020

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Star-shaped six-arm poly-2-alkyl-2-oxazine and poly-2-alkyl-2-oxazoline with hexaaza [26]orthoparacyclophane derivative core were synthesized successfully using cationic ring-opening polymerization. Conformational behavior of prepared polymer stars were investigated by the methods of molecular hydrodynamics and optics in molecular dispersed solutions. It was shown that conformation characteristics of star-shaped polypeptoids depends on arm length, while the chemical structure weakly affects the behavior of the studied polymers in solutions. This behavior is caused by the close equilibrium rigidity of arms. The star-shaped polypeptoids have relatively high intramolecular density. All synthesized stars exhibit LCST behavior. Phase separation temperature depends on arm structure. It is lower for poly-2-alkyl-2-oxazines, monomer units of which contains one methylene group more than monomers of poly-2-alkyl-2-oxazoline.

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“…Hence, the diameter of starPEO is 34.8 nm. On the other hand, taking into account the diameter of PAMAM (4.5 nm) and the radius of gyration of linear POZ (0.45 nm), the calculated diameter of DPOZ is c. 5.42 nm [22,23].…”

Section: Resultsmentioning

confidence: 99%

Formation and blood compatibility of thin layers of hyperbranched polymers on polyurethane films

2002

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Two kinds of hyperbranched polymers, star-shaped poly(ethylene oxide) and poly(2-ethyl-2-oxazoline)-bound polyamidoamine dendrimer, were immobilized on polyurethane (PU) films using photoreactive azidophenyl groups. Immobilization of the hyperbranched polymers was verified by ATR FT-IR observations and contact angle measurements. Using photoreactive molecules, this study shows a unique method to modify polymer films without functional groups easily through immobilization of other polymers on the film surface. PU surfaces modified with immobilized hyperbranched polymer showed significantly reduced platelet adhesion, i.e. increased blood compatibility, as measured via UV spectrometry and scanning electron microscopy.

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Molecular shape of poly(2-ethyl-2-oxazoline) chains in THF

Cited by 30 publications

References 39 publications

Conformational properties of biocompatible poly(2-ethyl-2-oxazoline)s in phosphate buffered saline

Conformational properties of biocompatible poly(2-ethyl-2-oxazoline)s in phosphate buffered saline

Synthesis and Conformational Characteristics of Thermosensitive Star-Shaped Six-Arm Polypeptoids

Formation and blood compatibility of thin layers of hyperbranched polymers on polyurethane films

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