Compositions, articles, and methods involving polymer grafted particles

A composition comprising:

• a particulate/polymer composite comprising a plurality of particles, wherein a first particle of the plurality of particles has a surface to which polymer chains are grafted, wherein at least some of the polymer chains grafted to the surface of the first particle are covalently linked to a polymer chain grafted to a second particle of the plurality of particles,
• wherein the composition comprises between greater than or equal to 0.1 wt. % and less than or equal to 30 wt. % of material other than the particulate/polymer composite, the plurality of particles comprise an oxide, a metal, a polymer, a semiconductor, a carbon-based material, and/or a metal-organic framework (MOF), and the first particle and/or second particle have an average maximum dimension between greater than or equal to 5 nm and less than or equal to 10 microns, and the composition has a glass transition temperature of at least −15° C.