TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The second bandgap energy: is greater than 2 electron volt unit (eV) and less than 3.21 eV; and is at or near the wavelength of highest intensity of the solar spectrum. The second nanomaterial is: a doped or an undoped metal oxide and/or a doped or an undoped metal sulfide; and a metal which is gold, aluminum, silver, barium, bismuth, cadmium, cerium, cobalt, chromium, copper, dysprosium, iron, gallium, hafnium, mercury, indium, potassium, lanthanum, lithium, magnesium, manganese, niobium, neodymium, nickel, osmium, lead, palladium, praseodymium, rhodium, ruthenium, antimony, samarium, tin, strontium, tantalum, terbium, titanium, thallium, vanadium, tungsten, ytterbium, yttrium, zinc or zirconium. The first and second nanomaterials include nanoparticles, nanorods, nanowires and/or nanoplates. The first and second nanomaterials are: attached to each other; or positioned proximally with respect to each other such that an average spacing between the nanomaterials is 1-1000 nm. In (B1), the integrated structure comprises silica. In (C1): the first nanomaterial comprises a TiO2 nanorod having two distal ends and the second nanomaterial comprises two metal oxide nanoparticles or two metal sulfide nanoparticles attached to the TiO2 nanorod at or near the distal ends; or the first nanomaterial comprises a TiO2 nanoparticle and the second nanomaterial comprises a metal oxide nanoparticle or a metal sulfide nanoparticle attached to the TiO2 nanoparticle. The UV light responsive nanomaterial comprises: TiO2; or a zinc oxide and/or stannous oxide nanomaterial. Preferred Method: The excited electron transfers from the LUMO of the first nanomaterial to the LUMO of the second nanomaterial. (A) further comprises providing a host matrix where at least one component of the heterodimer is impregnated into the host matrix. In (B1): the impregnated second nanomaterial is disposed on the surface of the host matrix or is at least partially integrated into the host matrix; and the step of impregnating comprises adding a precursor solution of the second nanomaterial to the host matrix followed by curing. (B1) further comprises applying heat to the host matrix impregnated with the second nanomaterial, hence turning the host matrix into the integrated structure. In (C1), the impregnated heterodimer is disposed on the surface of the host matrix or is at least partially integrated into the host matrix.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The system further comprises a host matrix to which at least one component of the heterodimer is added. The host matrix is a polymer film which is: polycarbosilane; or silicone, polysilane, polystannane and/or polyphosphazene.