...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dyes and Pigments >A turn-on mechanochromic luminescent material serving as pressure sensor and rewritable optical data storage
【24h】

A turn-on mechanochromic luminescent material serving as pressure sensor and rewritable optical data storage

机译：用于压力传感器和可重写光学数据存储的导通机械芯发光材料

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mechanochromic luminescent (ML) materials can be roughly classified into two categories: turn-off type and turn-on type. Clearly the latter is more reliable because it has higher sensitivity and lower false-positive signals or background noises. Herein, a turn-on type ML material, (E)-4-((2-hydroxy-5-methylbenzylidene)amino)-3-methylbenzoic acid (MMA), is presented, which is designed by integrating appropriate electron donor-acceptor (D-A) moieties into a twisted conjugation core. MMA displays both aggregation-induced emission (AIE) and intramolecular charge transfer (ICT) properties. In addition, it glows weakly but exhibits notable emission enhancement under mechanical stimuli, and the two emission states can be repeatedly switched by grinding-fumigation treatment. Unlike the ML materials based on crystalline-amorphous phase transition, the ML of MMA is ascribed to the coupling and decoupling of the D-A units, regardless of the phase state. And this new working mechanism is confirmed by crystallographic data and DFT calculations. A pressure sensor based on MMA was fabricated, affording a low detection limit down to 21.6 Mpa. MMA further facilitates the fabrication of a ML recording medium, which allows for piezo-writing and fumigation-erasing of data, demonstrating a reliable prototype of optical data storage.
机译：机械光学发光（ML）材料可以大致分为两类：关闭式和开启类型。显然，后者更可靠，因为它具有更高的灵敏度和更低的假阳性信号或背景噪声。在此，提出了一种导通型Ml材料，（E）-4-（（2-羟基-5-甲基苄基）氨基）-3-甲基苯甲酸（MMA），其通过整合适当的电子供体 - 受体而设计（da）部分进入扭曲的共轭核心。 MMA显示聚集诱导的发射（AIE）和分子内电荷转移（ICT）性质。此外，它在机械刺激下略微发光但在机械刺激下表现出显着的发射增强，并且可以通过研磨熏蒸处理重复切换两个发射状态。与基于结晶 - 非晶相转变的ML材料不同，无论相位状态如何，MMA的MMA都归因于D-A单元的偶联和去耦。并且这种新的工作机制通过晶体数据和DFT计算来确认。基于MMA的压力传感器制备，低检测限度降至21.6MPa。 MMA进一步促进了ML记录介质的制造，其允许压电写入和熏蒸的数据，证明了光学数据存储的可靠原型。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号