| Texto completo | |
| Autor(es): Mostrar menos - |
Ceccatto, Alisson
;
Campi, Gustavo Ramon
;
Diaz, Vanessa Carreno
;
Ferreira, Eidsa Brenda da Costa
;
Waleska-Wellnhofer, Natalie J.
;
Freiberger, Eva Marie
;
Jaekel, Simon
;
Papp, Christian
;
Steinrueck, Hans-Peter
;
Mowbray, Duncan John
;
de Siervo, Abner
Número total de Autores: 11
|
| Tipo de documento: | Artigo Científico |
| Fonte: | FLATCHEM; v. 50, p. 7-pg., 2025-03-01. |
| Resumo | |
On-surface synthesis is a powerful tool for engineering two-dimensional (2D) organic nanostructures by controlling intermolecular interactions between the building blocks. Herein, we explore the role of Cl adatoms in the synthesis and characterization of self-assembled 1,3,5-tris[4-(pyridin)-[1,1'-biphenyl]benzene (TPyPPB) networks on Ag(111), by combining scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT). In the absence of Cl, upon deposition at room temperature (RT), TPyPPB molecules form a highly ordered porous supramolecular network with triangular packing, stabilized by hydrogen bonds (N--H). In the presence of Cl adatoms, sublimated onto the surface using dichloro-(1,10phenanthrolin)-platin(II) (Cl2PhPt) a second molecular precursor, we observe a so-called mixed phase or inverted packing, depending on the applied growth procedure. The mixed phase is characterized by a nonperiodic structure stabilized by intermolecular interactions between TPyPPB, Cl2PhPt, and Cl. In contrast, when only Cl adatoms and TPyPPB are present on the Ag(111) surface, a non-porous supramolecular arrangement is obtained, stabilized by C-H--Cl hydrogen bonds. (AU) | |
| Processo FAPESP: | 22/12929-3 - Síntese na superfície de materiais de baixa dimensão de camada única e propriedades ajustáveis: entendendo sua integridade química, propriedades vibracionais, eletrônicas, e de spin |
| Beneficiário: | Abner de Siervo |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 21/04411-1 - Estudo da estrutura eletrônica e atômica de grafeno nanoporoso funcionalizado via síntese química de superfícies |
| Beneficiário: | Alisson Ceccatto dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 07/54829-5 - Estrutura eletrônica e geométrica de nano materiais: um estudo por radiação sincroton |
| Beneficiário: | Richard Landers |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |