Weijiang Guan

Developing polymer composites that combine long‐lived room‐temperature phosphorescence (RTP) with component recovery remains challenging because the local environment supporting triplet emission can be disrupted during processing and separation. Here, recoverable hydrogen‐bonded RTP modules are introduced as function‐retentive building blocks for organic afterglow composites. Carboxyl‐functionalized aromatic phosphors are co‐assembled with a melamine‐cyanuric acid (MA‐CA) framework, allowing long‐lived RTP to be maintained without relying on the polymer matrix as the sole rigidifying environment. Across three biphenyl dicarboxylic acid isomers, increasing meta‐carboxyl substitution correlates with longer phosphorescence lifetimes, supporting meta‐carboxyl anchoring as a useful design motif within this system. The representative module exhibits cyan afterglow with a lifetime of 2.83 s and an afterglow discernible for approximately 22 s, while terphenyl‐based analogues show lifetimes of 2.30–2.64 s. The modules retain long‐lived RTP after heating at 200 °C and after prolonged exposure to ethanol or DMSO, allowing their incorporation into stretchable and remoldable polymer films with substantial retention of long‐lived emission. After use, solvent‐assisted separation affords recoverable polymer‐rich and phosphorescent phases, with the recovered MA‐CA‐P2 module retaining a lifetime of 2.49 s. These results demonstrate a proof‐of‐concept modular route to processable and component‐recoverable organic afterglow composites.

An electrochemiluminescence-based interfacial readout sensitively detects interfacial changes associated with low-level precursor contamination in ionic liquids, providing a functional-purity metric complementary to routine chemical characterization.

Spin-state-associated electronic regulation improves interfacial electron-transfer kinetics and promotes superoxide generation, providing a potential electronic-structure-based strategy to enhance oxygen-involved electrochemiluminescence.

Correction for ‘Challenging the dry core paradigm: hydrated reactivity emerges within micellar cores’ by Riliga Wu et al. , Chem. Sci. , 2026, https://doi.org/10.1039/d6sc03380f.

At the heart of every micelle lies a densely packed core that provides nanoscale confinement. However, the micellar core remains largely unexplored owing to its hydrophobic and inaccessible nature. Here, we overcome this long-standing obstacle by incorporating environment-responsive clusteroluminescent chromophores into micellar assemblies. These chromophores not only report the local core environment, but also activate the core via packing perturbation, yielding a environment-responsive, hydrated, and chemically accessible nanospace. Emission-based mapping reveals a marked environmental change upon micellization, indicating that the micellar core is moderately polar. Solubilization experiments monitored by Förster resonance energy transfer and solvent-addition studies analyzed by polarity mapping indicated that micellar interface expansion and core packing perturbation each facilitate water penetration into the micellar core. The hydroxide-mediated reaction further confirms the chemical accessibility of the micellar core, with a rate constant comparable to values reported for reactions at micellar interfaces. These findings suggest a feasible strategy for developing related dynamic, reactive, and self-reporting micellar nanospaces.

Achieving organic phosphorescence that remains stable at elevated temperatures is challenging because thermally activated molecular motions typically accelerate non‐radiative decay of triplet excitons. Here, we report a topology‐driven conformational constraint strategy to enable high‐temperature organic phosphorescence. A hydrogen‐bonded supramolecular framework constructed from melamine and terephthalic acid serves as a rigid scaffold that imposes topological confinement on embedded terphenyl‐based emitters. Comparative studies using emitters with linear, bent, and trigonal‐like geometries reveal a clear geometry‐dependent trend in phosphorescence performance, suggesting that increased connectivity within the hydrogen‐bonded network strengthens conformational constraint and reduces non‐radiative relaxation pathways. Consistent with this topology–phosphorescence relationship, the system integrating trigonal‐like emitters exhibits persistent phosphorescence with a lifetime of up to 1.22 s at room temperature and retains long‐lived emission of 344 ms even at 150°C. Benefiting from the excellent environmental stability, the phosphorescent materials can be integrated into polymer matrices to fabricate flexible luminescent films that operate under high‐temperature conditions. This work highlights topology‐driven conformational constraint as an effective design strategy for developing environmentally robust organic phosphorescent materials.

Achieving organic phosphorescence that remains stable at elevated temperatures is challenging because thermally activated molecular motions typically accelerate non‐radiative decay of triplet excitons. Here, we report a topology‐driven conformational constraint strategy to enable high‐temperature organic phosphorescence. A hydrogen‐bonded supramolecular framework constructed from melamine and terephthalic acid serves as a rigid scaffold that imposes topological confinement on embedded terphenyl‐based emitters. Comparative studies using emitters with linear, bent, and trigonal‐like geometries reveal a clear geometry‐dependent trend in phosphorescence performance, suggesting that increased connectivity within the hydrogen‐bonded network strengthens conformational constraint and reduces non‐radiative relaxation pathways. Consistent with this topology–phosphorescence relationship, the system integrating trigonal‐like emitters exhibits persistent phosphorescence with a lifetime of up to 1.22 s at room temperature and retains long‐lived emission of 344 ms even at 150°C. Benefiting from the excellent environmental stability, the phosphorescent materials can be integrated into polymer matrices to fabricate flexible luminescent films that operate under high‐temperature conditions. This work highlights topology‐driven conformational constraint as an effective design strategy for developing environmentally robust organic phosphorescent materials.

The efficiency of electrochemiluminescence (ECL) is often limited by insufficient electron transfer and reactant accumulation on electrode surfaces. Herein, tunable ionic liquid (IL)-based microdomains were assembled on gold electrodes to enhance the ECL of the Ru(bpy)₃²⁺/triethylamine (TEA) system in neutral solution. By varying the alkyl chain length of ILs, the interfacial microdomain size was systematically controlled, leading to pronounced differences in ECL enhancement. The smallest microdomains yielded a 20-fold enhancement in ECL compared with the bare electrode, whereas the largest microdomains showed only a 6-fold enhancement. Electrochemical and ECL measurements show that the IL microdomains accelerate the oxidation kinetics of TEA and increase the interfacial accumulation of Ru(bpy)₃²⁺. Similar amplification behavior was observed for ILs with different counteranions and in tripropylamine (TPrA)- and luminol-based ECL systems, indicating the generality of this IL-regulated interfacial engineering strategy. This work provides a promising approach for enhancing ECL efficiency, which supports high-performance ECL sensing technologies.

A cationic D–π–A AIE-active photosensitizer was designed to efficiently generate type I/II ROS under white light, enabling rapid imaging and photodynamic eradication of Staphylococcus aureus .

Schematic diagram of strategies for tailoring clusteroluminescence.