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Salicylhydroxamic Acid as a Novel Switchable Adhesive Molecule
Chemistry of Materials ( IF 7.2 ) Pub Date : 2023-07-13 , DOI: 10.1021/acs.chemmater.3c00508 Kan Wang 1 , Lokanath Patra 2 , Bo Liu 1 , Zhongtian Zhang 1 , Ravindra Pandey 2 , Bruce P. Lee 1
Chemistry of Materials ( IF 7.2 ) Pub Date : 2023-07-13 , DOI: 10.1021/acs.chemmater.3c00508 Kan Wang 1 , Lokanath Patra 2 , Bo Liu 1 , Zhongtian Zhang 1 , Ravindra Pandey 2 , Bruce P. Lee 1
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The feasibility of salicylhydroxamic acid (SHAM) to function as a pH-responsive, switchable adhesive molecule is explored here. Using a custom-built Johnson–Kendall–Roberts contact mechanics test setup, SHAM-containing adhesive demonstrated strong, wet adhesion to various surfaces (glass, titanium, polystyrene and amine-functionalized glass) at pH 5 with adhesive properties that were comparable to those of catechol. The work of adhesion of SHAM decreased by nearly 98% with increasing pH and fully recovered when treated with pH 5. Most impressively, SHAM recovered its adhesive property even after its exposure to pH as high as 11, indicating superior stability toward base treatment. This result contrasts the case of catechol, which did not recover its initial adhesive property due to irreversible oxidation. Finally, density functional theory calculations were used to confirm that the observed tunable adhesion property was due to the deprotonation of SHAM.
中文翻译：
水杨基异羟肟酸作为新型可切换粘附分子
本文探讨了水杨异羟肟酸 (SHAM) 作为 pH 响应型、可切换粘合剂分子的可行性。使用定制的 Johnson-Kendall-Roberts 接触力学测试装置，含有 SHAM 的粘合剂在 pH 5 时对各种表面（玻璃、钛、聚苯乙烯和胺功能化玻璃）表现出强大的湿粘合力，其粘合性能与那些表面相当儿茶酚。随着 pH 值的增加，SHAM 的粘附功下降了近 98%，而在 pH 值为 5 的情况下则完全恢复。最令人印象深刻的是，SHAM 即使在暴露于高达 11 的 pH 值后也恢复了其粘附性能，这表明对碱处理具有优异的稳定性。这一结果与儿茶酚的情况形成对比，儿茶酚由于不可逆氧化而没有恢复其初始粘合性能。最后，
更新日期：2023-07-13
中文翻译：
水杨基异羟肟酸作为新型可切换粘附分子
本文探讨了水杨异羟肟酸 (SHAM) 作为 pH 响应型、可切换粘合剂分子的可行性。使用定制的 Johnson-Kendall-Roberts 接触力学测试装置，含有 SHAM 的粘合剂在 pH 5 时对各种表面（玻璃、钛、聚苯乙烯和胺功能化玻璃）表现出强大的湿粘合力，其粘合性能与那些表面相当儿茶酚。随着 pH 值的增加，SHAM 的粘附功下降了近 98%，而在 pH 值为 5 的情况下则完全恢复。最令人印象深刻的是，SHAM 即使在暴露于高达 11 的 pH 值后也恢复了其粘附性能，这表明对碱处理具有优异的稳定性。这一结果与儿茶酚的情况形成对比，儿茶酚由于不可逆氧化而没有恢复其初始粘合性能。最后，
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