Chemical Engineering Department, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States.
Nano Lett. 2013;13(12):6269-74. doi: 10.1021/nl403855k. Epub 2013 Nov 25.
With newly developed computational approaches, we design a nanocomposite that enables self-regeneration of the gel matrix when a significant portion of the material is severed. The cut instigates the dynamic cascade of cooperative events leading to the regrowth. Specifically, functionalized nanorods localize at the new interface and initiate atom transfer radical polymerization with monomers and cross-linkers in the outer solution. The reaction propagates to form a new cross-linked gel, which can be tuned to resemble the uncut material.
利用新开发的计算方法，我们设计了一种纳米复合材料，当材料的很大一部分被切断时，该复合材料能够使凝胶基质自我再生。切口引发了一系列协同事件的动态级联反应，从而导致了重新生长。具体来说，功能化纳米棒在新界面处定位，并在外溶液中的单体和交联剂引发原子转移自由基聚合。反应扩展形成新的交联凝胶，其可以被调谐以类似于未切割的材料。
