Reversible Stress‐memory Phosphorescent Carbon Nanodots via Supramolecular Confinement Engineering for Aerospace Monitoring
Source abstract
Abstract
Abstract The development of mechano‐responsive room‐temperature phosphorescent (RTP) materials with reversibility and durable memory stress‐recording capability remains a critical challenge, particularly under extreme operational conditions where covalent bond‐dependent systems often suffer from irreversible degradation. Herein, a hydrogen‐bond‐induced dynamic supramolecular confinement framework is constructed to achieve cyclodextrin‐trapped carbon nanodots (CNDs) with reversible and memorable mechano‐responsive RTP. Mechanical stress disrupts the metastable hydrogen‐bond network and weakens phosphorescence via enhanced non‐radiative decay of triplet excitons. Remarkably, the system exhibits a recovery of RTP intensity through ultrasonic reconstruction of the rigid cyclodextrin matrix. When deployed in aerospace structural health monitoring, the CND‐embedded film visualizes stress distribution in wings under sudden stress events through RTP weakening. This work establishes a non‐destructive monitoring paradigm for an extreme aerospace environment.
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Research context
OpenAlex topics: Carbon and Quantum Dots Applications · Luminescence and Fluorescent Materials · Advanced Fiber Laser Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electronics and Information Zhengzhou University of Light Industry Zhengzhou 450002 China
Academy for Quantum Science and Technology Zhengzhou University of Light Industry Zhengzhou 450002 China
Henan Key Laboratory of Information Functional Materials and Sensing Technology Zhengzhou University of Light Industry Zhengzhou 450002 China
Henan Key Laboratory of Diamond Optoelectronic Material and Devices School of Physics and Laboratory of Zhongyuan Light Zhengzhou University Zhengzhou 450001 China
Key Laboratory of Low‐Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha 410081 China
Funding
National Natural Science Foundation of China
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