Synthesis And Photoelectrial Properties Of Nitrogen And Sulfur Heteroatom Hybrid Of Naphthalene Derivatives

Acenes have big π-conjugated electron. The strong inter moleculepacking can be observed from the single crystal structure. Owing tointeraction of π-conjugated electron, this kind of molecules often showgood photoelectric properties and have potential use in organicphotoelectric devices. While with the number of benzene rings increasing,the energy gap narrows down and the HOMO level rises.Corresponding derivatives of these acenes have been studied, suchas rubrene. The introduction of benzene ring and naphthalene ring in themolecular side is very efficient to decrease the entire molecular energyand to stabilize the molecular structure because the large conjugated πelectron is highly delocalized and the electron cloud is completelyaverage.Introducing heteroatom is an effective method to accommodate themolecular HOMO and LUMO and the nonplanar twist structure is a wayto obtain luminescent material. The twist structure increases the densityof π electron thus enhances charge transfer ability.Herein, we developed a family of Nitrogen and sulfur heteroatom hybrid of naphthalene derivatives. The single crystal and optoelectronicstudy revealed heteroatom plays an important role in tuning thesolid-state packing and optoelectronic properties of these molecules.