Ultrafast and highly selective gold recovery with high capture capacity from electronic waste by upconversion of a silsesquioxane-based hybrid luminescent aerogel

Abstract

To maintain a sustainable development and improve resource utilization, there is an urgent need to recover gold using an eco-friendly, efficient and highly-selective method. We describe here, a silsesquioxane-based hybrid...

Hybrid Porous Polymers Combination of Octavinylsilsesquioxane/Pyrene with Benzothiadiazole Units for Robust Energy Storage and Efficient Photocatalytic Hydrogen Production from Water

“…A developed porous material, based on polyhedral oligomeric silsesquioxanes (POSS), demonstrates variable properties and a highly symmetrical three-dimensional structure with specified nanometer-sized dimensions. − Its potential lies in the combination of versatile and flexible organic shells surrounding a rigid silica core. It is a promising candidate for synthesizing hybrid nanocomposites that exhibit properties midway between organics and ceramics, − The increasing demand for POSS in scientific research and industry is attributed to their customizable physical and chemical properties. − Another crucial aspect of functionalized silsesquioxanes is their physicochemical properties arising from their hybrid (organic–inorganic) nature. − The Si–O–Si framework, corresponding to silica with a well-defined structure, could serve as an intriguing material for modifying polymers and acting as fillers (nanofillers). − The precise control of molecule sizes and the variation in functional groups within the POSS core allow for their accurate deposition and embedding in a polymer matrix. − This, in turn, results in the creation of composite materials with unique characteristics. These organic–inorganic hybrid materials showcase a diverse range of fascinating physicochemical properties, including alterations in solubility, enhanced dielectric characteristics, improved resistance to oxidation and fire, elevated decomposition and glass transition temperatures, reduced heat transfer rates, and an impact on the hardness of the resulting materials. − …”

New EDOT–SQ systems for electrochromic applications

“…The SQs increase the strength and stiffness of the materials, while reducing their flammability, heat generation and viscosity during processing. 34–39 Moreover, the SQ cores can be chemically functionalized with various organic substituents attached to the silicon corner atoms, which makes the polymers formed with them soluble. 40 Thanks to the SQ units, it is possible to create some gaps between polymer chains, which facilitates the introduction of counterions into the final materials.…”

Crosslinked siloxane–silsesquioxane elastomer with pyrene functionalization for rapid adsorption of benzene, toluene, and xylene (BTX) from water and sensing of charged species

“…A typical procedure utilized for retaining high elasticity and tunable photophysical and mechanical properties is the covalent cross-linking of fluorophores to elastomers. 39 For instance, Craig and co-workers synthesised stress-responsive polysiloxanes by treating mechanoacid diene and rhodamine dye derivatives with poly(dimethylsiloxane) (PDMS). 40 Brook and co-workers synthesised luminous silicon elastomers by coupling NH 2 -PDMS-NH 2 with an aldehyde-modified tetraphenylene derivative via the imine condensation reaction.…”