Hybrid Phenol-Rhodamine Dye Based Mechanochromic Double Network Hydrogels with Tunable Stress Sensitivity.
Autor: | Xu B; Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. China., Luo Z; Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. China., Xiao R; State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou, 310027, P. R. China., Wang Z; Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. China., Yang J; Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. China. |
---|---|
Jazyk: | angličtina |
Zdroj: | Macromolecular rapid communications [Macromol Rapid Commun] 2022 Dec; Vol. 43 (23), pp. e2200580. Date of Electronic Publication: 2022 Aug 12. |
DOI: | 10.1002/marc.202200580 |
Abstrakt: | Mechanochromic hydrogels, which can switch their color in response to the applied external force, have shown great potential in stress visualization and damage indication. However, the kinds of colors in the reported mechanochromic hydrogels are limited. It is challenging to develop mechanochromic hydrogels with new kinds of color changes. Herein, a kind of mechanochromic double network (DN) hydrogel is reported based on the hybrid phenol-rhodamine mechanophore. The hydrogels turn into orange color with an emission wavelength of around 566/574 nm in response to tensile and compressive stress. The DN hydrogels show great reversibility. The color of DN hydrogels vanishes slowly after releasing the stress. The stress sensitivity can be tailored by the crosslinking density and the mechanophore concentration of the first network. In addition, the influence of the pH on the mechanochromic properties of DN hydrogels is also studied. This study provides an insightful study in tuning the stress sensitivity in the mechanochromic hydrogel, which will be beneficial for the development of mechanochromic materials. (© 2022 Wiley-VCH GmbH.) |
Databáze: | MEDLINE |
Externí odkaz: |