Núñez Martínez, ManuelArias López, SandraQuiñoá Cabana, EmilioRiguera Vega, RicardoFreire Iribarne, Félix Manuel2022-08-052022-08-052021Chem. Mater. 2021, 33, 4805−4812. https://doi.org/10.1021/acs.chemmater.1c008050897-4756http://hdl.handle.net/10347/29027A novel approach to prepare stimulus-sensitive nanocomposites is described, based on a dynamic helical polymer, chiral poly(phenylacetylene) (PPA), and silver nanoparticles. To preserve the dynamic helical behavior of PPA within the nanocomposite, a weak and adaptive supramolecular interaction, such as that between amide group–silver nanoparticle, is used to link the metal nanoparticle to the polymer. To prepare the composite, we chose PPA as a helical polymer that bears an amide group as a monomer repeating unit, poly-(R)-1, which can coordinate with Ag+ ions. The silver ions that form complexes with the pendant groups are further reduced, through the use of NaBH4, to AgNPs that are stabilized by the amide groups of PPA. As a result, 2.8 nm silver nanoparticles are formed and aligned along the polymer chain with a regular 3.1 nm interparticle distance corresponding to the helical pitch of the polymer. The weak amide/AgNP interactions allow PPA to adopt either P or M helical structures on the AgNPs through supramolecular adaptive mechanisms induced by appropriate external stimulieng© 2021 American Chemical Society. This work is licenced under a Creative Commons Attribution 4.0 International licence (https://creativecommons.org/licenses/by/4.0/legalcode)http://creativecommons.org/licenses/by/4.0/IonsMetal nanoparticlesMetalsNanocompositesPolymersjournal article10.1021/acs.chemmater.1c00805open access