Ullmann-type coupling of brominated tetrathienoanthracene on copper and silver

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00430055" target="_blank" >RIV/68378271:_____/14:00430055 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c3nr05710k" target="_blank" >http://dx.doi.org/10.1039/c3nr05710k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c3nr05710k" target="_blank" >10.1039/c3nr05710k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ullmann-type coupling of brominated tetrathienoanthracene on copper and silver

Popis výsledku v původním jazyce

We report the synthesis of extended two-dimensional organic networks on Cu(111), Ag(111), Cu(110), and Ag(110) from thiophene-based molecules. A combination of scanning tunnelling microscopy and X-ray photoemission spectroscopy yields insight into the reaction pathways from single molecules towards the formation of two-dimensional organometallic and polymeric structures via Ullmann reaction dehalogenation and C?C coupling. The thermal stability of the molecular networks is probed by annealing at elevated temperatures of up to 500 C. On Cu(111) only organometallic structures are formed, while on Ag(111) both organometallic and covalent polymeric networks were found to coexist. The ratio between organometallic and covalent bonds could be controlled by means of the annealing temperature. The thiophene moieties start degrading at 200 C on the copper surface, whereas on silver the degradation process becomes significant only at 400 C.

Název v anglickém jazyce

Ullmann-type coupling of brominated tetrathienoanthracene on copper and silver

Popis výsledku anglicky

We report the synthesis of extended two-dimensional organic networks on Cu(111), Ag(111), Cu(110), and Ag(110) from thiophene-based molecules. A combination of scanning tunnelling microscopy and X-ray photoemission spectroscopy yields insight into the reaction pathways from single molecules towards the formation of two-dimensional organometallic and polymeric structures via Ullmann reaction dehalogenation and C?C coupling. The thermal stability of the molecular networks is probed by annealing at elevated temperatures of up to 500 C. On Cu(111) only organometallic structures are formed, while on Ag(111) both organometallic and covalent polymeric networks were found to coexist. The ratio between organometallic and covalent bonds could be controlled by means of the annealing temperature. The thiophene moieties start degrading at 200 C on the copper surface, whereas on silver the degradation process becomes significant only at 400 C.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/LM2011029" target="_blank" >LM2011029: SAFMAT - Středisko Analýzy Funkčních MATeriálů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

2660-2668

Kód UT WoS článku

000332127200022

EID výsledku v databázi Scopus

—