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首页> 外文期刊>Chemistry: A European journal >'Dial-In' Emission from a Unique Flexible Material with Polarization Tuneable Spectral Intensity
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'Dial-In' Emission from a Unique Flexible Material with Polarization Tuneable Spectral Intensity

机译：“拨入”从独特的柔性材料发射，具有极化可调可调频谱强度

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摘要

The development of organic photoluminescent materials, which show promising roles as catalysts, sensors, organic light-emitting diodes, logic gates, etc., is a major demand and challenge for the global scientific community. In this context, a photoclick polymerization method is adopted for the growth of a unique photoluminescent three-dimensional (3D) polymer film, E, as a model system that shows emission tunability over the range 350-650 nm against the excitation range 295-425 nm. The DFT analysis of energy calculations and p-stacking supports the spectroscopic observations for the material exhibiting a broad range of emission owing to newly formed chromophoric units within the film. Full polarization spectroscopic Mueller matrix studies were employed to extract and quantify the molecular orientational order of both the ground (excitation) and excited (emission) state anisotropies through a set of newly defined parameters, namely the fluorescence diattenuation and fluorescence polarizance. The information contained in the recorded fluorescence Mueller matrix of the organic polymer material provided a useful way to control the spectral intensity of emission by using pre- and post-selection of polarization states. The observation was based on the assumption that the longer lifetime of the excited dipolar orientation is attributed to the compactness of the film.
机译：有机光致发光材料的开发，其显示具有催化剂，传感器，有机发光二极管，逻辑门等的承诺作用是全球科学界的主要需求和挑战。在这种情况下，采用光偶杆聚合方法用于唯一的光致发光三维（3D）聚合物膜，E，作为模型系统，其在励磁范围内显示出350-650nm范围内的排放可调性nm。能量计算和P堆叠的DFT分析支持由于薄膜内的新形成的发色单元而具有广泛发射的材料的光谱观察。通过一组新定义的参数，即通过一组新定义的参数，使用全偏振光谱器基质研究以提取和量化地面（激发）和激发（发射）状态各向异性的分子定义顺序，即荧光利用，荧光偏振。有机聚合物材料的记录的荧光果汁粉基质中所含的信息提供了通过使用偏振态的预选择和选择的光谱强度来控制发射的光谱强度。观察基于假设激发偶极取向的较长寿命归因于薄膜的紧凑性。

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  • 来源
    《Chemistry: A European journal》 |2019年第59期|共9页
  • 作者

    Rajan Kumar; Subir Kumar Ray; Saikat Mukherjee; Sudipta Saha; Arijit Bag; Pradip Kr. Ghorai; Nirmalya Ghosh; Raja Shunmugam;

  • 作者单位

    Polymer Research Centre (PRC) Centre for Advanced Functional Materials (CAFM) Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

    Department of Physical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

    Polymer Research Centre (PRC) Centre for Advanced Functional Materials (CAFM) Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

    Department of Physical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

    Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

    Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

    Department of Physical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

    Polymer Research Centre (PRC) Centre for Advanced Functional Materials (CAFM) Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata (IISER K) Mohanpur West Bengal 741 246 (India);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    anisotropy; density functional calculations; photoluminescence; pi-pi interactions; polarization;

    机译：各向异性;密度函数计算;光致发光;PI-PI相互作用;极化;

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