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Verified CAS / Academic Author2 Decoded Studies

Prof. Feiyang Li

Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University

Co-Affiliations:School of Materials Science and Engineering, Hubei University

Research Publications & English Decoded Briefs

Showing 2 publications
SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3780-3

Revolutionizing Healthcare: The Next Generation of Wearable Chemical Sensors for Personal Health Monitoring

Real-time health monitoring and ongoing evaluation of physiological conditions are becoming increasingly vital for the advancement of future medical diagnostics and personalized healthcare solutions. Given that certain illnesses necessitate prompt and accessible detection methods, wearable chemical sensors have garnered considerable interest for their capability to monitor health through physiological signals and chemical indicators. This review delivers a thorough examination of recent developments in four primary categories of wearable chemical sensors: biosensors, humidity sensors, gas sensors, and ion sensors. We explore the representative materials, device structures, operating mechanisms, and various application scenarios for each type of sensor. By investigating the latest innovations in these technologies, we aim to provide a detailed overview of the current research landscape, highlight existing challenges, and present potential future directions of wearable chemical sensors in healthcare monitoring.

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SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3820-5

Rigid Oxygen-Bridged Boron NHC-Based Homoleptic Phosphorescent Iridium Complexes: Structures, Photophysics and OLED Application

Two novel N-heterocyclic carbene (NHC)-based ligands featuring rigid boron-oxygen (BO) fused-ring units, named Bpmi and Bpmb, and the two corresponding homoleptic meridianal iridium complexes, namely mer-Ir(Bpmi)3 and mer-Ir(Bpmb)3, were designed and synthesized. Single-crystal structures revealed a meridional coordination geometry for both complexes. Shorter Ir–C carbene bond lengths and rigid planar BO-fused ring units contribute to enhanced stability. Both complexes exhibit efficient green phosphorescence (λem = 536/521 nm in toluene, ΦPL > 78%) with short lifetimes (τ = 846/1083 ns), leading to high radiative rate constants (Kr = 10.04 × 10^5 and 7.29 × 10^5 s−1, respectively). Theoretical calculations indicate significantly increased metal-to-ligand charge transfer (MLCT) character (21.69% for mer-Ir(Bpmi)3; 17.30% for mer-Ir(Bpmb)3) compared to reference complexes (13.01% for mer-Ir(pmi)3; 15.99% for mer-Ir(pmb)3). Both complexes exhibit exceptional thermal stability with decomposition temperatures of 491°C (mer-Ir(Bpmi)3) and 540°C (mer-Ir(Bpmb)3). OLED devices using mer-Ir(Bpmb)3 and mer-Ir(Bpmi)3 as emitters demonstrate maximum external quantum efficiencies of 20.0% and 15.6%, respectively. This research pioneers boron-fused ring-containing NHCs and their phosphorescent iridium(III) complexes, establishing a novel design strategy for high-performance NHC-based OLED phosphorescent emitters.

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