Copper wire-catalyzed RDRP in nonpolar media as a route to ultrahigh molecular weight organic-inorganic hybrid polymers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F18%3A00491350" target="_blank" >RIV/61389013:_____/18:00491350 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/macp.201800141" target="_blank" >http://dx.doi.org/10.1002/macp.201800141</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/macp.201800141" target="_blank" >10.1002/macp.201800141</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Copper wire-catalyzed RDRP in nonpolar media as a route to ultrahigh molecular weight organic-inorganic hybrid polymers

Popis výsledku v původním jazyce

Controlled synthesis of high‐molecular weight (MW) organic–inorganic hybrid polymers based on polyhedral oligomeric silsesquioxane (POSS) monomers has previously proved difficult to achieve by reversible‐deactivation radical polymerization methods. Here, this problem is tackled by employing a rarely used combination of Cu(0) catalysis and nonpolar solvents to polymerize a POSS‐methacrylate monomer, i BuPOSSMA. It is revealed that chain transfer to solvent plays a dominant role in this system as only benzene and not toluene allows for synthesis of low dispersity, ultrahigh MW products (up to 3 500 000). Importantly, the process is characterized by very low amounts (units of ppm) of copper released into the polymerization mixture, leading to products with no discoloration. Finally, benzene use is also shown to be beneficial for copper bromide–catalyzed polymerization of i BuPOSSMA, affording polymers with moderate MWs and extremely low dispersities (down to 1.06).

Název v anglickém jazyce

Copper wire-catalyzed RDRP in nonpolar media as a route to ultrahigh molecular weight organic-inorganic hybrid polymers

Popis výsledku anglicky

Controlled synthesis of high‐molecular weight (MW) organic–inorganic hybrid polymers based on polyhedral oligomeric silsesquioxane (POSS) monomers has previously proved difficult to achieve by reversible‐deactivation radical polymerization methods. Here, this problem is tackled by employing a rarely used combination of Cu(0) catalysis and nonpolar solvents to polymerize a POSS‐methacrylate monomer, i BuPOSSMA. It is revealed that chain transfer to solvent plays a dominant role in this system as only benzene and not toluene allows for synthesis of low dispersity, ultrahigh MW products (up to 3 500 000). Importantly, the process is characterized by very low amounts (units of ppm) of copper released into the polymerization mixture, leading to products with no discoloration. Finally, benzene use is also shown to be beneficial for copper bromide–catalyzed polymerization of i BuPOSSMA, affording polymers with moderate MWs and extremely low dispersities (down to 1.06).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GAP106%2F12%2F0844" target="_blank" >GAP106/12/0844: Syntéza nových typů organicko-anorganických hybridních kopolymerů (nanokompozitů) a studium jejich vlastností</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Macromolecular Chemistry and Physics

ISSN

1022-1352

e-ISSN

—

Svazek periodika

219

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

000439815700005

EID výsledku v databázi Scopus

2-s2.0-85050161431