Tuning the Porosity and Photocatalytic Performance of Triazine-Based Graphdiyne Polymers through Polymorphism

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00501539" target="_blank" >RIV/61388955:_____/19:00501539 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388963:_____/19:00501539 RIV/00216208:11310/19:10388728

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/cssc.201802034" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/cssc.201802034</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cssc.201802034" target="_blank" >10.1002/cssc.201802034</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tuning the Porosity and Photocatalytic Performance of Triazine-Based Graphdiyne Polymers through Polymorphism

Popis výsledku v původním jazyce

Crystalline and amorphous organic materials are an emergent class of heterogeneous photocatalysts for the generation of hydrogen from water, but a direct correlation between their structures and the resulting properties has not been achieved so far. To make a meaningful comparison between structurally different, yet chemically similar porous polymers, two porous polymorphs of a triazine-based graphdiyne (TzG) framework are synthesized by a simple, one-pot homocoupling polymerization reaction using as catalysts Cu-I for TzG(Cu) and Pd-II/Cu-I for TzG(Pd/Cu). The polymers form through irreversible coupling reactions and give rise to a crystalline (TzG(Cu)) and an amorphous (TzG(Pd/Cu)) polymorph. Notably, the crystalline and amorphous polymorphs are narrow-gap semiconductors with permanent surface areas of 660 m(2) g(-1) and 392 m(2) g(-1), respectively. Hence, both polymers are ideal heterogeneous photocatalysts for water splitting with some of the highest hydrogen evolution rates reported to date (up to 972 mu mol h(-1) g(-1) with and 276 mu mol h(-1) g(-1) without Pt cocatalyst). Crystalline order is found to improve delocalization, whereas the amorphous polymorph requires a cocatalyst for efficient charge transfer. This will need to be considered in future rational design of polymer catalysts and organic electronics.

Název v anglickém jazyce

Tuning the Porosity and Photocatalytic Performance of Triazine-Based Graphdiyne Polymers through Polymorphism

Popis výsledku anglicky

Crystalline and amorphous organic materials are an emergent class of heterogeneous photocatalysts for the generation of hydrogen from water, but a direct correlation between their structures and the resulting properties has not been achieved so far. To make a meaningful comparison between structurally different, yet chemically similar porous polymers, two porous polymorphs of a triazine-based graphdiyne (TzG) framework are synthesized by a simple, one-pot homocoupling polymerization reaction using as catalysts Cu-I for TzG(Cu) and Pd-II/Cu-I for TzG(Pd/Cu). The polymers form through irreversible coupling reactions and give rise to a crystalline (TzG(Cu)) and an amorphous (TzG(Pd/Cu)) polymorph. Notably, the crystalline and amorphous polymorphs are narrow-gap semiconductors with permanent surface areas of 660 m(2) g(-1) and 392 m(2) g(-1), respectively. Hence, both polymers are ideal heterogeneous photocatalysts for water splitting with some of the highest hydrogen evolution rates reported to date (up to 972 mu mol h(-1) g(-1) with and 276 mu mol h(-1) g(-1) without Pt cocatalyst). Crystalline order is found to improve delocalization, whereas the amorphous polymorph requires a cocatalyst for efficient charge transfer. This will need to be considered in future rational design of polymer catalysts and organic electronics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

ChemSusChem

ISSN

1864-5631

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

194-199

Kód UT WoS článku

000456279600014

EID výsledku v databázi Scopus

2-s2.0-85056811832