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Published on: April 11, 2020
QM/QM study of the coverage effects on the adsorption of amino-cyclopentene at the Si(100) surface
Hugo R R Santos1, Gregori Ujaque, Maria J Ramos
1REQUIMTE, Departamento de Química, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
Abstract:
In this work, we have tested 30 different adsorption situations in several coverage scenarios for the 1-amino-3-cyclopentene (ACP) molecule on the Si(100) surface. We have used a five-spot testing zone inserted in the high-level part of a quantum-mechanical/quantum-mechanical study performed in a big cluster. By defining several different scenarios, each one with a typical adsorption energy, we were able to understand in detail the process of surface functionalization. We are able to justify why the functionalization of this silicon surface achieves only a coverage of approximately 0.5 ML (half monolayer) and why the completely covered surface should be thermodynamically impossible to obtain.
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