| Abstract Scope |
Hybrid materials are solids containing both organic and inorganic constituents bound together in crystalline or amorphous structures, often showing distinct ordering and/or phase separation on the nanoscale. Relatively strongly bound examples include simple salts of organic cations, hybrid perovskites where organic cations substitute for large inorganic ones, polymer derived ceramics and their precursors, and metal organic frameworks (MOFs), in which inorganic nodes are connected by organic linkers. More weakly bound examples include intergrowths of organic and inorganic films or fibers, where the interactions occur mainly at interfaces. Advanced solution calorimetry measures their formation energetics. The organic ion, linker, or layer plays a dominant role in energetics because of its ability to change its geometric configuration, affecting both vibrational and electronic structures, and giving rise to interplay between enthalpy and entropy effects. |