当前位置：
X-MOL 学术
›
Mater. Chem. Front.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Mechanochromic luminescence of phase-separated hydrogels that contain cyclophane mechanophores
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2023-06-22 , DOI: 10.1039/d3qm00579h Shohei Shimizu 1 , Hiroaki Yoshida 2 , Koichi Mayumi 3, 4 , Hiroharu Ajiro 2 , Yoshimitsu Sagara 1, 5
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2023-06-22 , DOI: 10.1039/d3qm00579h Shohei Shimizu 1 , Hiroaki Yoshida 2 , Koichi Mayumi 3, 4 , Hiroharu Ajiro 2 , Yoshimitsu Sagara 1, 5
Affiliation
|
Mechanochromic mechanophores that are covalently introduced into polymer materials can visualize the mechanical force applied to the polymer chains. Mechanochromic hydrogels using mechanophores such as 1,2-dioxetane derivatives, spiropyran, and rhodamine have been developed so far. However, these hydrogels do not show instant reversibility in response to force because scission of covalent bonds is needed for the mechanophores for activation. Here, mechanochromic luminescent hydrogels that show reversible changes of emission properties are demonstrated utilizing a cyclophane-based supramolecular mechanophore whose working mechanism does not rely on the breakage of covalent bonds. The cyclophane mechanophore is introduced into phase-separated hydrogels as a crosslinker. The decrease in intramolecular excimers upon deformation results in the mechanochromic luminescence and the emission change was achieved reversibly and instantly. It was also found that most of the mechanophores are incorporated into the hydrophobic part of the hydrogels, when replacing dimethylsulfoxide with water in the gels.
中文翻译：
含有环芳基机械载体的相分离水凝胶的机械致色发光
共价引入聚合物材料中的力致变色力力团可以可视化施加到聚合物链上的机械力。迄今为止，已经开发出使用1,2-二氧杂环丁烷衍生物、螺吡喃和罗丹明等力力团的力致变色水凝胶。然而，这些水凝胶并未表现出对力的即时可逆性，因为力团的激活需要共价键的断裂。在这里，利用基于环芳烷的超分子力力团展示了显示发射特性可逆变化的力致变色发光水凝胶，其工作机制不依赖于共价键的断裂。环烷机械载体作为交联剂被引入相分离水凝胶中。变形时分子内准分子的减少导致机械致色发光，并且可逆且即时地实现发射变化。还发现，当凝胶中的二甲亚砜被水取代时，大多数力基团被并入水凝胶的疏水部分。
更新日期：2023-06-22
中文翻译：
含有环芳基机械载体的相分离水凝胶的机械致色发光
共价引入聚合物材料中的力致变色力力团可以可视化施加到聚合物链上的机械力。迄今为止，已经开发出使用1,2-二氧杂环丁烷衍生物、螺吡喃和罗丹明等力力团的力致变色水凝胶。然而，这些水凝胶并未表现出对力的即时可逆性，因为力团的激活需要共价键的断裂。在这里，利用基于环芳烷的超分子力力团展示了显示发射特性可逆变化的力致变色发光水凝胶，其工作机制不依赖于共价键的断裂。环烷机械载体作为交联剂被引入相分离水凝胶中。变形时分子内准分子的减少导致机械致色发光，并且可逆且即时地实现发射变化。还发现，当凝胶中的二甲亚砜被水取代时，大多数力基团被并入水凝胶的疏水部分。
京公网安备 11010802027423号