Yellow and red polymorphic co-crystals of phenyl-substituted pyrazinacene and naphthalene via π-hole⋯π interactions

2025/01/01 by Kazushi Nakada, Gary J. Richards, Akiko Hori · 1 voice
Chemistry · Materials Science · #Crystallography and molecular interactions #Luminescence and Fluorescent Materials #Synthesis and Characterization of Heterocyclic Compounds

paper · pdf · doi:10.1039/d5ce00114e

openalex publication_date 2025/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/02

Abstract

Phenyl-substituted pyrazinacene and naphthalene form yellow and red co-crystal polymorphs via π-hole⋯π interactions. The red form, with a herringbone motif, shows tenfold enhanced emission via exciplex, while the yellow form has a columnar motif.

Citations

• Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density
• Density-functional thermochemistry. III. The role of exact exchange
• Software update: The ORCA program system—Version 5.0
• Energy Transfer Mechanisms and the Molecular Exciton Model for Molecular Aggregates

Discussions

• The front cover of the latest issue showcases a communication by Akiko Hori & co. on yellow & red polymorphic co-crystals of phenyl-substituted pyrazinacene and naphthalene via π-hole⋯π interactions. [bsky, 0 points, 0 comments]