RT Journal Article T1 Biasing the Hierarchy Motifs of Nanotoroids: from 1D Nanotubes to 2D Porous Networks A1 Valera, Jorge S. A1 Arima, Hironari A1 Naranjo Calderón, Cristina A1 Saito, Takuho A1 Suda, Natsuki A1 Gómez Aspe, Rafael A1 Yagai, Shiki A1 Sánchez Martín, Luis AB 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 on the selfassembly 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 UVand visible light enabled reversible dissociation and reconstruction of nanotoroids through the efficient trans$cis isomerization of azobenzene moieties in solution. PB Wiley SN 1433-7851 YR 2021 FD 2021-11-25 LK https://hdl.handle.net/20.500.14352/4696 UL https://hdl.handle.net/20.500.14352/4696 LA eng NO CRUE-CSIC (Acuerdos Transformativos 2021) NO Ministerio de Economía y Competitividad (MINECO) NO Comunidad de Madrid NO Japan Societyfor the Promotion for Science(JSPS) DS Docta Complutense RD 16 may 2024