Abstract: Certain embodiments useful as HIV-inhibitor agents are directed to fullerene derivatives tetrahydro-1H—C60-fulleropyrrolo[1,2-c][1,3]thiazine salts (Formula I) or tetrahydro-1H—C70-fulleropyrrolo[1,2-c][1,3]thiazine salts (Formula II), while further embodiments are directed to ?, ?, ?, and/or ? isomer of tetrahydro-1H—C70-fulleropyrrolo[1,2-c][1,3]thiazine salt.

Abstract: Design and use of photo-switching, fullerene-based dyads of the design x-D-y-A or D-y-A-x as interfacial layers (IFL) for organic photovoltaic (OPV) devices are described herein. The fullerene-based dyads and triads of the present invention contain electron-donating substituents such as porphyrins or phthalocyanines that exhibit charge separation states with long lifetimes upon irradiation, resulting in rejection of electrons reaching the electrode and concurrently promoting the conduction of holes. This phenomenon has a strong rectifying effect on the whole device, not just the interfaces, resulting in improved charge extraction from the interior of the photo-active layer. The invention further describes anchoring an IFL to the ITO surface as a monolayer, bilayer, or greater multilayers. One OPV design embodiment of the present invention embodiment involves the formation of covalent bonds via silane groups (—SiR3) as the anchor (x), to form siloxane bonds.

Abstract: Certain embodiments are directed to fullerene derivatives tetrahydro-1H—C60-fulleropyrrolo[1,2-c][1,3]thiazine salts (Formula I) or tetrahydro-1H—C70-fulleropyrrolo[1,2-c][1,3]thiazine salts (Formula II). Certain further embodiments are directed to ?, ?, ?, and/or ? isomer of tetrahydro-1H—C70-fulleropyrrolo[1,2-c][1,3]thiazine salt.