Related Experiment Video
Updated: May 15, 2025

Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures
Published on: December 1, 2023
A universal strategy for multicolor organic circularly polarized afterglow materials with high dissymmetry factors
Chenjia Yin1, Siyu Sun1, Zi-Ang Yan1
1Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
Abstract:
Materials with pure organic circularly polarized afterglow (CPA) have attracted significant attention due to their spatiotemporal-resolved optical properties, yet achieving simultaneous high dissymmetry factor (glum) and multicolor ultralong emission remains a challenge. Here, we establish a universal energy transfer-photon coupling strategy to realize CPA spanning from blue to red with record-high glum (up to 1.90) and ultralong lifetimes (>6 s). Systematic characterization of nonchiral donor-acceptor systems (TP-BPEA, TP-Fluo, etc.) reveals the absence of ground-state chiral centers (gCD ≈ 0) and orientation artifacts (LD < 10-7), confirming the key role of cholesteric liquid crystal polymer in chirality induction. This spatiotemporal synergy between energy transfer (wavelength modulation) and photonic engineering (polarization control) provides a framework for chiral photonic materials, with potential implications for multidimensional information encryption.
More Related Videos
Related Concept Videos
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent...
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
UV–Vis Spectroscopy: Woodward–Fieser Rules
Hückel's Rule Diagram of π MOs: Frost Circle
A Frost circle is constructed by drawing a polygon whose number of edges is equal to the number of carbons of the given cyclic system, with one of the vertices pointing down. Then, a circle is drawn enclosing the polygon so...
Cycloaddition Reactions: MO Requirements for Photochemical Activation

