Photogenerated charge collection on diamond electrodes with covalently linked chromophore monolayers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00524953" target="_blank" >RIV/61388955:_____/20:00524953 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/20:00524953 RIV/68407700:21230/20:00340994

Výsledek na webu

<a href="https://doi.org/10.1016/j.electacta.2020.135762" target="_blank" >https://doi.org/10.1016/j.electacta.2020.135762</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2020.135762" target="_blank" >10.1016/j.electacta.2020.135762</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photogenerated charge collection on diamond electrodes with covalently linked chromophore monolayers

Popis výsledku v původním jazyce

B:NCD is a promising p-type photoelectrode in dye-sensitized solar cells. One method of diamond surface functionalization using stable carbon-carbon bonds involves the electrochemical grafting of diazonium salts. Here, we establish functionalization of B:NCD electrodes by a monolayer of ethynylphenyl molecules using sterically hindered 4 (trimethylsilyl)ethynylbenzenediazonium tetrafluoroborate. Both the density and structural orientation of the grafted layer are investigated by ARXPS, confirming the presence of covalently grafted monolayers. After removal of the trimethylsilyl protective groups, the resulting ethynyl functionalities are employed to immobilize organic donor-acceptor chromophores via Sonogashira crosscoupling reactions. Correlation between the density of the molecular layer and photocurrents/photovoltage provides better understanding of the charge generation and recombination pathways in diamond-organic photoelectrochemical cells.

Název v anglickém jazyce

Photogenerated charge collection on diamond electrodes with covalently linked chromophore monolayers

Popis výsledku anglicky

B:NCD is a promising p-type photoelectrode in dye-sensitized solar cells. One method of diamond surface functionalization using stable carbon-carbon bonds involves the electrochemical grafting of diazonium salts. Here, we establish functionalization of B:NCD electrodes by a monolayer of ethynylphenyl molecules using sterically hindered 4 (trimethylsilyl)ethynylbenzenediazonium tetrafluoroborate. Both the density and structural orientation of the grafted layer are investigated by ARXPS, confirming the presence of covalently grafted monolayers. After removal of the trimethylsilyl protective groups, the resulting ethynyl functionalities are employed to immobilize organic donor-acceptor chromophores via Sonogashira crosscoupling reactions. Correlation between the density of the molecular layer and photocurrents/photovoltage provides better understanding of the charge generation and recombination pathways in diamond-organic photoelectrochemical cells.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Electrochimica acta

ISSN

0013-4686

e-ISSN

—

Svazek periodika

337

Číslo periodika v rámci svazku

Mar

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000521531700059

EID výsledku v databázi Scopus

2-s2.0-85078667084