Peresisene

Peresisene is a term used in speculative chemistry and some fictional works to denote a hypothetical polycyclic aromatic hydrocarbon or related organic framework. As of now, there is no widely recognized chemical with this name in major databases such as PubChem or ChemSpider.

The etymology is uncertain; the name appears to echo established PAH naming patterns, borrowing the -ene suffix from compounds like pentacene and perylene, but no standard IUPAC name exists.

In theoretical discussions, peresisene is often described as a compact, highly conjugated system of fused benzene rings. Variant structures are proposed by different authors, ranging from a linear tricyclic core to more compact, star-like arrangements.

Predicted properties for a realized molecule include high thermal stability, strong fluorescence, and potential utility as an organic semiconductor in light-emitting diodes or solar cells. However, these properties are speculative until a confirmed synthesis is reported.

No experimental synthesis or isolation has been documented, and proposed routes—such as cyclization of polyaryl precursors or photochemical cycloadditions—remain hypothetical. The term is occasionally used in science fiction or as a placeholder for future PAH design.

Related terms include perylene, pentacene, and other polycyclic aromatic hydrocarbons.