Expanding the Horizon of Mechanochromic Detection by Luminescent Shear Stress Sensor Supraparticles,Advanced Functional Materials

当前位置： X-MOL 学术 › Adv. Funct. Mater. › 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.)

Expanding the Horizon of Mechanochromic Detection by Luminescent Shear Stress Sensor Supraparticles
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2019-03-07 , DOI: 10.1002/adfm.201901193
Susanne Wintzheimer ₁ , Jakob Reichstein ₁ , Sarah Wenderoth ₁ , Sebastian Hasselmann ₂ , Maximilian Oppmann ₂ , Marcel T. Seuffert ₃ , Klaus Müller‐Buschbaum ₃ , Karl Mandel _{1,

2}

Affiliation

Novel sensor particles have been developed that expand the variety of today's mechanochromic systems. The developed supraparticles consist of several different components to enable the sensor function. First, a luminescence‐quenching core material is coated with silica nanoparticles. Second, this structure is surrounded by raspberry‐like nanostructured silica particles, which host luminophore moieties. Upon shear stress, components spatially separated in the original supraparticles, namely quencher and luminophore components, come into contact. This causes an irreversible quenching of the luminescence (sensor turn‐off). Different options to select core, quencher, and luminophore components allow to drive the sensors to different sensing options regarding response time, sensitivity, and operation time. The sensors can be sensitive and rapid in response or generated to monitor the influence of shear stress over longer periods of time. Thus, a rapid, visible, “on‐the‐fly” sensing of shear stress is possible as well as monitoring the impact of prolonged shear stress. The particles are assembled by spray‐drying. This affords flexibility when choosing the type of quencher and luminophore moiety. As such, the sensitivity of this robust, particle‐based shear stress sensor system can be deliberately configured. Furthermore, the supraparticle sensor can be integrated in surfaces to create interactive, communicating materials.

中文翻译：

发光剪切应力传感器超微粒子扩大了机械变色检测的视野

已经开发出新颖的传感器颗粒，可以扩展当今的机械变色系统的种类。研发的超微粒由几种不同的成分组成，以实现传感器功能。首先，将淬火发光的芯材涂上二氧化硅纳米粒子。其次，这种结构被覆有树莓状纳米结构的二氧化硅颗粒所包围，这些颗粒具有发光体部分。在剪切应力作用下，在原始超颗粒中在空间上分离的成分（即淬灭剂和发光体成分）开始接触。这会导致不可逆的发光淬灭（传感器关闭）。选择核心，淬灭剂和发光体组件的不同选项允许将传感器驱动到关于响应时间，灵敏度和工作时间的不同传感选项。传感器可以灵敏快速地响应，也可以在更长的时间内监控剪切应力的影响。因此，可以对剪切应力进行快速，可视的“即时”感测，并可以监视长时间的剪切应力的影响。颗粒通过喷雾干燥组装。这提供了灵活性选择猝灭剂和发光部分的类型时。因此，可以有意识地配置这种强大的，基于粒子的剪切应力传感器系统的灵敏度。此外，超微粒传感器可以集成在表面中以创建交互的，可通信的材料。颗粒通过喷雾干燥组装。这提供了灵活性选择猝灭剂和发光部分的类型时。因此，可以有意识地配置这种强大的，基于粒子的剪切应力传感器系统的灵敏度。此外，超微粒传感器可以集成在表面中以创建交互的，可通信的材料。颗粒通过喷雾干燥组装。这提供了灵活性选择猝灭剂和发光部分的类型时。因此，可以有意识地配置这种强大的，基于粒子的剪切应力传感器系统的灵敏度。此外，超微粒传感器可以集成在表面中以创建交互的，可通信的材料。

更新日期：2019-03-07

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南