Advancing the boundaries of the covalent functionalization of graphene oxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10248226" target="_blank" >RIV/61989100:27640/21:10248226 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15640/21:73610946

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S2468023021003977?token=2E7DEACEA228504FD5905E9A036405826A4F655082D20FC19CB223424135D9CF062358CAFC11E5AC4DDA8B934A382F30&originRegion=eu-west-1&originCreation=20211124094011" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S2468023021003977?token=2E7DEACEA228504FD5905E9A036405826A4F655082D20FC19CB223424135D9CF062358CAFC11E5AC4DDA8B934A382F30&originRegion=eu-west-1&originCreation=20211124094011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfin.2021.101320" target="_blank" >10.1016/j.surfin.2021.101320</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advancing the boundaries of the covalent functionalization of graphene oxide

Popis výsledku v původním jazyce

The synthesis of a derivatized graphene oxide with a particularly high degree of functionalization is achieved through a facile wet-chemistry procedure. Graphene oxide is a highly reactive graphene derivative, especially with nucleophiles or dipolarophiles. However the reductive action of nucleophiles, as well as of other reactants or solvents usually prevails over functionalization. Therefore, the reactions of graphene oxide lead almost exclusively into reduced graphene derivatives with low functionalization degree. Here we report that tuning the reaction conditions during functionalization can alter the competition outcome of the two simultaneous reactions in a 1,3 dipolar cycloaddition on graphene oxide. Under these conditions, the cycloaddition pathway was dramatically favoured against the unspecific reduction/oxygen elimination side reactions, affording a selectively and densely functionalized graphene oxide. This property can be exploited for enhancing the interactions with target molecules (very effective immobilization of pharmaceutic compounds, as demonstrated here), as well as in other applications such as in preparing catalysts with high content of active sites by coordinating metal nanoparticles or atoms. (C) 2021 Elsevier B.V.

Název v anglickém jazyce

Advancing the boundaries of the covalent functionalization of graphene oxide

Popis výsledku anglicky

The synthesis of a derivatized graphene oxide with a particularly high degree of functionalization is achieved through a facile wet-chemistry procedure. Graphene oxide is a highly reactive graphene derivative, especially with nucleophiles or dipolarophiles. However the reductive action of nucleophiles, as well as of other reactants or solvents usually prevails over functionalization. Therefore, the reactions of graphene oxide lead almost exclusively into reduced graphene derivatives with low functionalization degree. Here we report that tuning the reaction conditions during functionalization can alter the competition outcome of the two simultaneous reactions in a 1,3 dipolar cycloaddition on graphene oxide. Under these conditions, the cycloaddition pathway was dramatically favoured against the unspecific reduction/oxygen elimination side reactions, affording a selectively and densely functionalized graphene oxide. This property can be exploited for enhancing the interactions with target molecules (very effective immobilization of pharmaceutic compounds, as demonstrated here), as well as in other applications such as in preparing catalysts with high content of active sites by coordinating metal nanoparticles or atoms. (C) 2021 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologie pro budoucnost</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Surfaces and Interfaces

ISSN

2468-0230

e-ISSN

—

Svazek periodika

26

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

101320

Kód UT WoS článku

000701782200004

EID výsledku v databázi Scopus

2-s2.0-85109453993