Polypseudorotaxanes between .alpha.-cyclodextrin and poly(propylene glycol)-b-poly(ethylene glycol)-b-poly(propylene glycol) copolymers studied by MALDI-TOF mass spectrometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00456042" target="_blank" >RIV/61389013:_____/16:00456042 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2015.11.037" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2015.11.037</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2015.11.037" target="_blank" >10.1016/j.eurpolymj.2015.11.037</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Polypseudorotaxanes between .alpha.-cyclodextrin and poly(propylene glycol)-b-poly(ethylene glycol)-b-poly(propylene glycol) copolymers studied by MALDI-TOF mass spectrometry

Popis výsledku v původním jazyce

MALDI-TOF mass spectrometry is used to show that formation of solid polypseudorotaxanes between α-cyclodextrin (α-CD) and poly(propylene glycol)–poly(ethylene glycol)–poly(propylene glycol) block copolymers (PPG–PEG–PPG, Reverse Pluronics) is a block length selective process. A comparison of copolymer composition matrices of neat Reverse Pluronics 10R5 and 17R4 and of the copolymers in their precipitated complexes with α-CD shows that the distribution with respect to an absolute PPG content is not affected by the complexation, which means that complexation occurs with Reverse Pluronics generally, not just with the fraction of copolymers with at least one outer block short or completely absent and that α-CD can slide even over block of 20 PG. Nevertheless, the complexation is a selective process with respect to PEG as copolymers with shorter PEG blocks are more abundant in the supernatant while the content of PPG remains almost unchanged for both Reverse Pluronics.

Název v anglickém jazyce

Polypseudorotaxanes between .alpha.-cyclodextrin and poly(propylene glycol)-b-poly(ethylene glycol)-b-poly(propylene glycol) copolymers studied by MALDI-TOF mass spectrometry

Popis výsledku anglicky

MALDI-TOF mass spectrometry is used to show that formation of solid polypseudorotaxanes between α-cyclodextrin (α-CD) and poly(propylene glycol)–poly(ethylene glycol)–poly(propylene glycol) block copolymers (PPG–PEG–PPG, Reverse Pluronics) is a block length selective process. A comparison of copolymer composition matrices of neat Reverse Pluronics 10R5 and 17R4 and of the copolymers in their precipitated complexes with α-CD shows that the distribution with respect to an absolute PPG content is not affected by the complexation, which means that complexation occurs with Reverse Pluronics generally, not just with the fraction of copolymers with at least one outer block short or completely absent and that α-CD can slide even over block of 20 PG. Nevertheless, the complexation is a selective process with respect to PEG as copolymers with shorter PEG blocks are more abundant in the supernatant while the content of PPG remains almost unchanged for both Reverse Pluronics.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Polymer Journal

ISSN

0014-3057

e-ISSN

—

Svazek periodika

74

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

256-263

Kód UT WoS článku

000369204100024

EID výsledku v databázi Scopus

2-s2.0-84949501939