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首页> 外文期刊>Advanced Functional Materials >Tunable Self-Assembled Micro/Nanostructures of Carboxyl-Functionalized Squarylium Cyanine for Ammonia Sensing
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Tunable Self-Assembled Micro/Nanostructures of Carboxyl-Functionalized Squarylium Cyanine for Ammonia Sensing

机译：可调谐自组装的羧基官能化ary菁花青素的微/纳米结构，用于氨感测

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摘要

Orderly molecular self-assembly for tunable microanostructures is an effective way to prepare novel functional materials with desired properties. Squarylium cyanine (SCy) dyes have received great attention in the fields of laser, imaging, and optoelectronic device. However, the detailed self-assembly behavior of SCy has rarely been investigated. In the present work, two SCy derivatives, D1 and D2, respectively, bearing four and two carboxylic acid groups at different positions are prepared and used as a model system to investigate the molecular self-assembly, morphology, and optical properties of SCy dyes. The hydrogen-bonding interactions between the carboxylic acid groups in D1 and D2 are determined with X-ray diffraction, 2D nuclear magnetic resonance, and Fourier transformation infrared spectroscopy. The two types of hydrogen bonds in D1 cooperating with inherent - stacking interaction result in tunable molecular aggregations, which further leads to the transformation between J-aggregation and H-aggregation of D1 in the solid state in response to ammonia gas. In all, this work provides a feasible and effective way to study the self-assembled aggregates of SCy dyes at both molecular and supramolecular levels, and has developed a reversible sensor for ammonia gas detection.
机译：用于可调微/纳米结构的有序分子自组装是制备具有所需性能的新型功能材料的有效方法。 ary菁菁（SCy）染料在激光，成像和光电器件领域受到了极大的关注。但是，很少研究SCy的详细的自组装行为。在本工作中，制备了两个分别在不同位置带有四个和两个羧酸基团的SCy衍生物D1和D2，并将其用作研究SCy染料的分子自组装，形态和光学性质的模型系统。 D1和D2中的羧酸基团之间的氢键相互作用通过X射线衍射，二维核磁共振和傅里叶变换红外光谱法确定。 D1中的两种氢键与固有的-堆积相互作用协同作用导致分子聚集可调，这进一步导致了固态D1的J聚集和H聚集之间响应氨气而发生转变。总之，这项工作为研究分子水平和超分子水平上SCy染料的自组装聚集体提供了一种可行而有效的方法，并且已经开发了一种可逆传感器来检测氨气。

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  • 来源
    《Advanced Functional Materials》 |2015年第48期|7442-7449|共8页
  • 作者

    Li Jie; Lv Baozhong; Yan Dongpeng; Yan Shouke; Wei Min; Yin Meizhen;

  • 作者单位

    Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Carbon Fiber & Funct Polymers, Beijing Lab Biomed Mat,Minist Educ, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Carbon Fiber & Funct Polymers, Beijing Lab Biomed Mat,Minist Educ, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Carbon Fiber & Funct Polymers, Beijing Lab Biomed Mat,Minist Educ, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Carbon Fiber & Funct Polymers, Beijing Lab Biomed Mat,Minist Educ, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Carbon Fiber & Funct Polymers, Beijing Lab Biomed Mat,Minist Educ, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Carbon Fiber & Funct Polymers, Beijing Lab Biomed Mat,Minist Educ, Beijing 100029, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ammonia gas; carboxylic acid; hydrogen-bonding; self-assembly; squarylium cyanine;

    机译：氨气;羧酸;氢键;自组装;方菁花青;

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