Biasing the Hierarchy Motifs of Nanotoroids: from 1D Nanotubes to 2D Porous Networks

Autor:	Luis Sánchez, Jorge S. Valera, Takuho Saito, Shiki Yagai, Rafael Gomez, Hironari Arima, Natsuki Suda, Cristina Naranjo
Rok vydání:	2021
Předmět:	Steric effects Materials science Hierarchy (mathematics) Química orgánica Biasing General Medicine General Chemistry Catalysis Dissociation (chemistry) chemistry.chemical_compound Azobenzene chemistry Chemical engineering Graphite Isomerization Visible spectrum
Zdroj:	E-Prints Complutense. Archivo Institucional de la UCM instname
ISSN:	1521-3773 1433-7851
Popis:	Hierarchical organization of self-assembled structures into superstructures is omnipresent in Nature but has been rarely achieved in synthetic molecular assembly due to the absence of clear structural rules. We herein report the self-assembly of scissor-shaped azobenzene dyads which form discrete nanotoroids that further organize into 2D porous networks. The steric demand of the peripheral aliphatic units diminishes the trend of the azobenzene dyad to constitute stackable nanotoroids in solution, thus affording isolated (unstackable) nanotoroids upon cooling. Upon drying, these nanotoroids organize at graphite surface to form well-defined 2D porous networks. The photoirradiation with UV and visible light enabled reversible dissociation and reconstruction of nanotoroids through the efficient trans -to- cis isomerization of azobenzene moieties in solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06477ccb8b6ee6d17ae4c25b25f26ee8 https://doi.org/10.1002/anie.202114290 Zobrazit plný text záznamu Plný text