Valera González, Jorge SantosArima, HironariNaranjo Calderón, CristinaSaito, TakuhoSuda, NatsukiGómez Aspe, RafaelYagai, ShikiSánchez Martín, Luis2023-06-162023-06-162021-11-251433-785110.1002/anie.202114290https://hdl.handle.net/20.500.14352/4696CRUE-CSIC (Acuerdos Transformativos 2021)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.engAtribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/journal articlehttps://doi.org/10.1002/anie.202114290open access547azobenzenehierarchical organizationnanotoroidsphotorespon sivesystemssupramolecular polymersQuímica orgánica (Química)2306 Química Orgánica