%0 Journal Article
%T Novel aerogels based on supramolecular G-quadruplex assembly with intrinsic flame retardancy and thermal insulation.
%A Yang L
%A Zhang H
%A Wang C
%A Jiao Y
%A Pang X
%A Xu J
%A Ma H
%J J Colloid Interface Sci
%V 672
%N 0
%D 2024 Oct 15
%M 38861849
%F 9.965
%R 10.1016/j.jcis.2024.06.048
%X The construction of supramolecular aerogels still faces great challenges. Herein, we present a novel bio-based supramolecular aerogel derived from G-Quadruplex self-assembly of guanosine (G), boric acid (B) and sodium alginate (SA) and the obtained GBS aerogels exhibit superior flame-retardant and thermal insulating properties. The entire process involves environmentally friendly aqueous solvents and freeze-drying. Benefiting from the supramolecular self-assembly and interpenetrating dual network structures, GBS aerogels exhibit unique structures and sufficient self-supporting capabilities. The resulting GBS aerogels exhibit overall low densities (36.5-52.4 mg/cm3), and high porosities (>95 %). Moreover, GBS aerogels also illustrate excellent flame retardant and thermal insulating properties. With an oxygen index of 47.0-51.1 %, it can easily achieve a V-0 rating and low heat, smoke release during combustion. This work demonstrates the preparation of intrinsic flame-retardant aerogels derived from supramolecular self-assembly and dual cross-linking strategies, and is expected to provide an idea for the realization and application of novel supramolecular aerogel materials.