Role of Dangling Bond State Occupancy in Adsorption of Copper Phthalocyanine on Si(111)-Sn-root 3 x root 3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10395972" target="_blank" >RIV/00216208:11320/19:10395972 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Yk66qEbgNP" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Yk66qEbgNP</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.9b03624" target="_blank" >10.1021/acs.jpcc.9b03624</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Role of Dangling Bond State Occupancy in Adsorption of Copper Phthalocyanine on Si(111)-Sn-root 3 x root 3

Popis výsledku v původním jazyce

Interaction of organic molecules with solid surfaces reflects the local electronic structure of nonequivalent surface sites. The Si(111)-Sn-root 3 x root 3 surface with intrinsic defects offers dangling bonds with various electron occupancies. In this study, we report on the interaction of copper phthalocyanine with this surface studied with scanning tunneling microscopy and spectroscopy. Sn atoms in the adlayer contain unpaired electrons in their dangling bonds. The molecules are found to adsorb on Sb and Si substitutional defects instead of the homogenous Sn areas. The symmetry of the molecules is lowered or lost after adsorption, and we find substantial differences in the electronic structure of the molecules adsorbed on either type of defects. Furthermore, the molecules preferentially adsorb on double Si substitutional defects where they can switch between a static and a fuzzy state, for both of which a corresponding bonding model is proposed. Our study shows a pivotal role of substitutional defects in the reactivity of the Si(111)-Sn-root 3 x root 3 surface for the copper phthalocyanine molecules, which we attribute to local changes of electronic structure and discuss it in terms of dangling bond state occupancy.

Název v anglickém jazyce

Role of Dangling Bond State Occupancy in Adsorption of Copper Phthalocyanine on Si(111)-Sn-root 3 x root 3

Popis výsledku anglicky

Interaction of organic molecules with solid surfaces reflects the local electronic structure of nonequivalent surface sites. The Si(111)-Sn-root 3 x root 3 surface with intrinsic defects offers dangling bonds with various electron occupancies. In this study, we report on the interaction of copper phthalocyanine with this surface studied with scanning tunneling microscopy and spectroscopy. Sn atoms in the adlayer contain unpaired electrons in their dangling bonds. The molecules are found to adsorb on Sb and Si substitutional defects instead of the homogenous Sn areas. The symmetry of the molecules is lowered or lost after adsorption, and we find substantial differences in the electronic structure of the molecules adsorbed on either type of defects. Furthermore, the molecules preferentially adsorb on double Si substitutional defects where they can switch between a static and a fuzzy state, for both of which a corresponding bonding model is proposed. Our study shows a pivotal role of substitutional defects in the reactivity of the Si(111)-Sn-root 3 x root 3 surface for the copper phthalocyanine molecules, which we attribute to local changes of electronic structure and discuss it in terms of dangling bond state occupancy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA16-15802S" target="_blank" >GA16-15802S: Samo-uspořádané molekulární struktury na površích křemíku modifikovaných kovy</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

123

Číslo periodika v rámci svazku

26

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

16232-16238

Kód UT WoS článku

000474796600036

EID výsledku v databázi Scopus

2-s2.0-85068482924