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Updated: Sep 18, 2025
09:06
Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing
Published on: July 3, 2020
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Single-Component High-Performance Adhesives Enabled by Synergistic Supramolecular and Covalent Polymerization
Yan Shao1, Wen Li1, Massimo Cametti2
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
Journal of the American Chemical Society
|June 25, 2025
Summary
Researchers developed a novel tripodal molecule, BTA-C7, for high-strength supramolecular adhesives. This molecule combines supramolecular and covalent polymerization, significantly enhancing adhesive performance through UV-induced cross-linking.
Area of Science:
- Materials Science
- Polymer Chemistry
- Supramolecular Chemistry
Background:
- Developing high-strength adhesives from single molecules is challenging.
- Supramolecular adhesives offer potential for lightweight, reversible, and stimuli-responsive bonding.
Purpose of the Study:
- To design and synthesize a novel tripodal multifunctional molecule for enhanced adhesive performance.
- To investigate a synergistic supramolecular and covalent polymerization strategy.
Main Methods:
- Synthesis of a tripodal molecule (BTA-C7) with benzene-1,3,5-tricarboxamide core, cyanostilbene moieties, and benzo-crown-ether macrocycles.
- Formation of supramolecular networks via hydrogen bonding and macrocycle assembly.
- UV-induced covalent photo-cross-linking via [2 + 2] cycloaddition.
Main Results:
- BTA-C7 formed supramolecular networks with baseline adhesion of 2.28 MPa.
- UV irradiation enhanced adhesion strength to 5.18 MPa through covalent cross-linking.
- Comparative studies confirmed the essential roles of amide and crown ether units.
Conclusions:
- The tripodal molecule BTA-C7 demonstrates remarkable adhesive performance.
- Synergistic supramolecular and covalent polymerization is an effective strategy for high-strength adhesives.
- Amide and crown ether functionalities are crucial for network formation and cross-linking.
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