Assembling of bis(tpy)fluorenes with Zn2+ and Fe2+ ions into metallo-supramolecular polymers with highly efficient white-light emission

Kód výsledku v IS VaVaI

RIV/00216208:11310/17:10368210 - isvavai.cz

Výsledek na webu

https://doi.org/10.1016/j.polymer.2017.06.037

DOI - Digital Object Identifier

10.1016/j.polymer.2017.06.037

Jazyk výsledku

angličtina

Název v původním jazyce

Assembling of bis(tpy)fluorenes with Zn2+ and Fe2+ ions into metallo-supramolecular polymers with highly efficient white-light emission

Popis výsledku v původním jazyce

Three fully pi-conjugated bisterpyridines with fluorene unit in the central block were synthetized using the Suzuki-Miyaura coupling and transformed to corresponding conjugated metallo-supramolecular polymers (MSPs) with Zn2+ or Fe2+ ions. Assembling course of MSPs was investigated by absorption and emission spectroscopy, size-exclusion chromatography and viscometric measurements. Two systems with Zn2+ ions showed white emission with high quantum yields of fluorescence. The constitutional dynamics of Zn-polymers is fast while that of Fe-polymers is as slow that it allows effective separation of the polymer in SEC columns. Electronic spectra and SEC measurements proved that excess of Fe2+ ions results in their end-capping by these ions and shortening of the polymer chains. The phenomenon of shortening of the polymer chains by surplus of metal ions was additionally confirmed by viscometry measurements for both ion-couplers, which provides us new awareness about the length of MSPs with Zn2+ ions.

Název v anglickém jazyce

Assembling of bis(tpy)fluorenes with Zn2+ and Fe2+ ions into metallo-supramolecular polymers with highly efficient white-light emission

Popis výsledku anglicky

Three fully pi-conjugated bisterpyridines with fluorene unit in the central block were synthetized using the Suzuki-Miyaura coupling and transformed to corresponding conjugated metallo-supramolecular polymers (MSPs) with Zn2+ or Fe2+ ions. Assembling course of MSPs was investigated by absorption and emission spectroscopy, size-exclusion chromatography and viscometric measurements. Two systems with Zn2+ ions showed white emission with high quantum yields of fluorescence. The constitutional dynamics of Zn-polymers is fast while that of Fe-polymers is as slow that it allows effective separation of the polymer in SEC columns. Electronic spectra and SEC measurements proved that excess of Fe2+ ions results in their end-capping by these ions and shortening of the polymer chains. The phenomenon of shortening of the polymer chains by surplus of metal ions was additionally confirmed by viscometry measurements for both ion-couplers, which provides us new awareness about the length of MSPs with Zn2+ ions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

GA15-22305S: Konstituční dynamika hemiacetalových a hemiaminalových responzivních systémů stabilizovaných skupinami odčerpávajícími elektrony

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Polymer

ISSN

0032-3861

e-ISSN

—

Svazek periodika

122

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

22-33

Kód UT WoS článku

000406822200003

EID výsledku v databázi Scopus

2-s2.0-85021214537