A Simple, Easy Preparation and Tunable Strategy for Preparing Organic Room-Temperature Phosphorescence

Abstract

Eye-catching organic room-temperature phosphorescence (RTP) is becoming more and more universal through various strategies, such as crystal engineering, macrocyclic inclusion, host–guest doping, and copolymerization. It is always the pursuit of researchers to prepare high-efficiency RTP materials by the simplest strategy. The doping strategy is one of the most simple and effective strategies and involves mixing phosphor with rigid host material. The principle of the doping RTP system has developed from a conventional rigidity effect of the host through the host–guest interaction. This perspective aims at multifunctional host materials and summarizes the recent development of doping organic RTP systems. Doping systems play more and more important roles in the development of long-afterglow and high-yield RTP materials. The application scenarios of RTP are becoming wider and wider.

Assembly and Applications of Macrocyclic-Confinement-Derived Supramolecular Organic Luminescent Emissions from Cucurbiturils

“…Q­[ n ]­s as classical macrocyclic hosts distinguish themselves from other artificial organic macrocycles for fabricating smart supramolecular organic luminescent emissions in recent years, due to the tunable macrocyclic-confinement effect from the confined rigid molecular spaces with different sizes. − Generally, the characterization of Q­[ n ]-based supramolecular organic emissions with the size-dependent confinement effect can be classified by the following: (1) The rigid confined cavity and the carbonyl oxygen atoms at the rim of the polar Q­[ n ] portal can efficiently change the electron density distribution or charge transfer of the dye guest molecules. In particular, they can switch the luminescence properties of the dye molecule simply and efficiently through multiple noncovalent interactions without the need for complicated organic synthesis.…”

Tunable Ultralong Room Temperature Phosphorescence Based on Zn(II)-Niacin Metal–Organic Complex: Accessible and Low-Cost

“…Subsequently, pure organic LPL materials have been reported with good flexibility and a long lifetime, attracting extensive attention. , However, organic compounds have weak SOC (spin–orbit coupling) and unstable triplet excitons. Many efforts have been made to optimize the photoluminescence properties to obtain ultralong organic LPL, like the introduction of heavy atoms/heteroatoms with lone pair electrons, the formation of crystals, H-aggregation, host–guest dopping, etc . However, despite the progress made in improving the properties of LPL materials, there is still a gap between current knowledge and the demands of society.…”

Highly Emissive (PPh)3CuBr by Trace (BINAP)2Cu2Br2 Doping and Their Application in Dichloromethane Detection

“…In recent years, small-molecule host–guest doping has gradually become an effective strategy for the preparation of materials with strong phosphorescent emissions. − Based on this strategy, two compounds are used as a host and guest or donor and acceptor, achieving an excellent optical property. Methods for preparing host–guest systems include doping organic phosphors into suitable matrix, cocrystallization of two components, mixed melt-casting, and construction of coordination polymer .…”