• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Layered photochromic films stacked from spiropyran-modified montmorillonite nanosheets
【24h】

Layered photochromic films stacked from spiropyran-modified montmorillonite nanosheets

机译：从螺丝燕丹改性的Montmorillonite Nanoshs堆叠的层状光致变色膜

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

Two-dimensional (2D) nanosheets are a class of fascinating host material that demonstrates a high specific surface area for the immobilization of functional molecules. Herein, we describe a layered photochromic film using montmorillonite 2D nanosheets immobilized with spiropyran units, which demonstrates a remarkable and reversible photochromic behavior. The synthesis of the layered photochromic film includes the intercalation and exfoliation of montmorillonite powders into 2D nanosheets using a spiropyran-modified surfactant and a subsequent vacuum filtration. The photochromic units of spiropyran-modified quaternary ammonium groups are immobilized on the surface of montmorillonite 2D nanosheets through an electrostatic interaction after exchanging with the native cations in montmorillonite during the intercalation and exfoliation. The photoisomerization of the spiropyran units between closed-ring spiropyran and open-ring merocyanine upon visible/UV irradiation contributes to the photochromic behavior of the layered film. The color contrast between the coloration and decoloration states of photochromic film is optimized by increasing the amount of spiropyran-modified cationic surfactant during the intercalation and exfoliation process. Our layered films with a visual photochromic behavior may promote their applications for optical data storage, optical switching and chemical sensing.
机译：二维（2D）纳米片是一类迷人的宿主材料，其证明了用于固定功能分子的高比表面积。在此，我们描述了使用与螺吡喃单元固定的Montmorillonite 2D纳米胸部的分层光致变色膜，其演示了一种显着且可逆的光致变色行为。层状光致变色膜的合成包括使用螺吡喃改性的表面活性剂和随后的真空过滤的Montmorillonite粉末中的蒙脱石粉末中的插入和剥离。通过在嵌入和剥离期间与蒙脱石的天然阳离子交换后，通过静电相互作用将螺吡喃改性季铵基团的光致变色单元固定在蒙脱土2D纳米晶片的表面上。在可见/紫外线照射时闭环螺吡喃和开环新氰胺之间的螺绣球机组的光致作用有助于层状膜的光致变色行为。通过增加嵌入和剥离过程中的螺吡喃改性阳离子表面活性剂的量来优化光致变色膜的着色和脱色状态之间的颜色对比。我们具有可视光致变色行为的层状薄膜可以促进其用于光学数据存储，光学切换和化学传感的应用。

著录项

  • 来源
    《RSC Advances》 |2019年第22期|共6页
  • 作者

    Gan Mengke; Xiao Tianliang; Liu Zhaoyue; Wang Yao;

  • 作者单位

    Beihang Univ Sch Chem Minist Educ Key Lab Bioinspired Smart Interfacial Sci &

    Techn Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Minist Educ Key Lab Bioinspired Smart Interfacial Sci &

    Techn Beijing 100191 Peoples R China;

    Beihang Univ Sch Chem Minist Educ Key Lab Bioinspired Smart Interfacial Sci &

    Techn Beijing 100191 Peoples R China;

    South China Normal Univ South China Acad Adv Optoelect Inst Elect Paper Displays Guangdong Prov Key Lab Opt Informat Mat &

    Technol Guangzhou 510006 Guangdong Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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