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Dynamic Phosphorescent Probe for Facile and Reversible Stress Sensing
Advanced Materials ( IF 27.4 ) Pub Date : 2017-03-20 05:20:56 , DOI: 10.1002/adma.201700563 Georgy A. Filonenko 1 , Julia R. Khusnutdinova 1
Advanced Materials ( IF 27.4 ) Pub Date : 2017-03-20 05:20:56 , DOI: 10.1002/adma.201700563 Georgy A. Filonenko 1 , Julia R. Khusnutdinova 1
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Dynamic phosphorescent copper complex incorporated into the main chain of polyurethanes produces a facile and reversible response to tensile stress. In contrast to common deformation sensors, the applied stress does not lead to bond scission, or alters the phosphor structure. The suppression of dynamics responsible for the nonradiative relaxation is found to be the major pathway governing stress response. As a result, the response of dynamic phosphor described in this work is stress specific. Compared to initial unloaded state, a nearly twofold increase of photoluminescence intensity occurs in response to a 5–35 MPa stress applied to pristine metalated polymers or their blends with various polyurethanes. Finally, the dynamic sensor proves useful for mapping stress distribution patterns and tracking dynamic phenomena in polyurethanes using simple optical imaging techniques.
中文翻译：
动态磷光探针，可实现可逆的应力感应
掺入聚氨酯主链中的动态磷光铜络合物可对拉伸应力产生容易且可逆的响应。与普通的变形传感器相比，所施加的应力不会导致键断裂，也不会改变磷光体的结构。发现抑制非辐射弛豫的动力学是控制应力反应的主要途径。结果，在这项工作中描述的动态磷光体的响应是应力特定的。与初始空载状态相比，响应于施加于原始金属化聚合物或其与各种聚氨酯的共混物的5–35 MPa应力，光致发光强度几乎增加了两倍。最后，
更新日期：2017-06-08
中文翻译：
动态磷光探针，可实现可逆的应力感应
掺入聚氨酯主链中的动态磷光铜络合物可对拉伸应力产生容易且可逆的响应。与普通的变形传感器相比，所施加的应力不会导致键断裂，也不会改变磷光体的结构。发现抑制非辐射弛豫的动力学是控制应力反应的主要途径。结果，在这项工作中描述的动态磷光体的响应是应力特定的。与初始空载状态相比，响应于施加于原始金属化聚合物或其与各种聚氨酯的共混物的5–35 MPa应力，光致发光强度几乎增加了两倍。最后，
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