White-light emission from a pyrimidine–carbazole conjugate with tunable phosphorescence–fluorescence dual emission and multicolor emission switching
Tsutomu Ishi‐i, Honoka Tanaka, In Seob Park, Takuma Yasuda, Shin‐ichiro Kato, Mitsunori Ito, Hidetaka Hiyoshi, Taisuke Matsumoto
Abstract
A metal-free organic carbazole-pyrimidine dye exhibiting phosphorescence-fluorescence dual emission was developed into a white-light emission-switching system. The two crystal polymorphs obtained by breaking the molecular symmetry responded to the external stimuli of heating, vapor-fuming, and mechanical grinding, resulting in a tricolor switching system that includes white-light emission.
Topics & Concepts
PhosphorescenceFluorescenceCarbazolePhotochemistryMaterials scienceConjugateWhite lightChemistryOptoelectronicsOpticsPhysicsMathematicsMathematical analysisLuminescence and Fluorescent MaterialsOrganic Light-Emitting Diodes ResearchMolecular Sensors and Ion Detection