Engineering Covalent Organic Frameworks with Dual Hydrophilic Sites for Subsecond Moisture-Triggered Chromic Switching
Source abstract
Abstract
Stimuli-responsive smart materials exhibiting rapid and reversible color switching are highly desirable for emerging technologies. In this study, we present a covalent organic framework (PT-COF) constructed from tartaric acid dihydrazide (TAD) and an aldehyde monomer. During the synthesis process, partial in situ decomposition of TAD into hydrazine leads to a distinctive architecture incorporating both hydrazine linkages and residual TAD moieties. This dual-hydrophilic-site design enhances the framework's sensitivity to low-humidity, enabling ultrafast (<1.0 s) and fully reversible moisture-triggered naked-eye color switching of PT-COF between yellow and orange states, accompanied by reversible fluorescence intensity changes, with excellent cycling stability. The material demonstrates promising applications in advanced anticounterfeiting systems and sensitive metabolite detection platforms.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Covalent Organic Framework Applications · Polydiacetylene-based materials and applications · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education
Shandong Normal University
Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering
Shandong University
Shanghai Key Laboratory of Cancer Systems Regulation and Clinical Translation
Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Science
Funding
National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · the Project of Shandong Provincial Center for Fundamental Science Research
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