The derivation and characterization of quinine charge-transfer complexes with inorganic and organic acceptors in liquid and solid form

High-Quality Circularly Polarized Organic Afterglow from Nonconjugated Amorphous Chiral Copolymers

Organic materials featuring circularly polarized luminescence (CPL) and/or afterglow emission represent an active research frontier with promising applications in various fields, but the achievement of high-performance CPL organic afterglow (CPOA) remains a huge challenge due to the intrinsic contradictions between the luminescent lifetime/dissymmetry factor (glum) and phosphorescent quantum efficiency (PhQY). Herein, we report a simple and universal approach to design efficient CPOA from amorphous copolymers by incorporating chiral chromophores into a nonconjugated clusterization-triggered emissive polymer with plenty of hydron-bonding interactions, followed by aggregation engineering using water dissolution and evaporation. With this chiral copolymerization and aggregation engineering (CCAE) strategy, high-performance CPOA polymers with PhQYs of up to 6.32%, ultralong lifetimes of over 650 ms, glum values of 3.54 × 10-3, and the highest figure-of-merit were achieved at room temperature. Given the impressive CPOA performance of these polymers, the applications in multilevel data anticounterfeiting and reversible displays with high stability were demonstrated. These findings through the CCAE strategy to overcome the inherent restraints of CPOA materials lay the foundation for the development of amorphous polymers with superior CPOA, significantly expanding the understanding of CPL and the design of organic afterglow materials.

Synthesis and structure of new modified derivatives based on the quinine molecule and their biological activity

The relevance of the subject matter is conditioned by the constantly growing need to meet human needs in the field of medicine, in particular, the search, study, and further introduction of new types of medicines into practical use. The purpose of this study is to investigate the synthesis of modified quinine alkaloid derivatives, and their structure, to identify the properties and biological activity of antimalarial drugs based on quinine molecules, and to structure the general data of these substances. The leading approach is the analysis of the synthesis of quinine derivatives, their chemical and physical properties, and their ability to exert a medicinal effect. The abstracting method allows structuring alkaloid derivatives and establishing a general relationship between the structural configuration of molecules and their impact on human health in a number of related derivatives. The study identifies the main antimalarial drugs based on quinine molecules, including a comparative analysis of their effectiveness and overall biological activity.