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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Unusual mechanohypsochromic luminescence and unique bidirectional thermofluorochromism of long-alkylated simple DPP dyes
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Unusual mechanohypsochromic luminescence and unique bidirectional thermofluorochromism of long-alkylated simple DPP dyes

机译：不寻常的机械曲折的发光和独特的长烷基化简单DPP染料的双向化热荧光荧光

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摘要

There have been hundreds of organic and metallorganic compounds found to exhibit mechanobathochromic luminescence within tens of nanometers. This paper presents the first example of unusual mechano-hypsochromic luminescence and unique bidirectional thermofluorochromism based on 1,4-diketo-2,5di( tetradecyl)-3,6-bis-(p-chlorophenyl) pyrrolo[3,4-c] pyrrole (TDPP). Pristine TDPP powder is a red emitting crystal (645 nm, R state) and can be changed into a yellow amorphous state (544 nm, Y state) by mechanical grinding or solution spin-coating. The Y state could revert to the R state upon annealing below 60 degrees C or solvent fuming, however, annealing the Y state above 70 degrees C produced a new green-emitting crystalline state (523 nm, G state). Furthermore, the G state can transform to the Y and R states upon grinding and solvent fuming, respectively. In contrast, those novel phenomena were not observed in the butylated DPP, demonstrating that the peripheral alkyl chain lengths of organic fluorophores can play diverse functional roles in determining the solid-state aggregation behavior and fluorescence properties. This work has improved some types of stimuli responsive materials and new optical properties of alkylated DPPs have been developed.
机译：已经存在数百种有机和金属无毒化合物，在数十纳米内表现出MechanobAhochromic发光。本文提出了基于1,4-Diketo-2,5di（四癸基）-3,6-双 - （对氯苯基）Pyrrolo [3,4-C]的不寻常的机械 - 低温发光和独特的双向热荧光荧光和独特的双向热氟色料中的第一个例子[3,4-C]吡咯（TDPP）。原始TDPP粉末是红色发射晶体（645nm，R状态），可以通过机械研磨或溶液旋涂改变成黄色无定形状态（544nm，Y状态）。 Y状态在退火后可以在低于60℃或溶剂烟雾时恢复到R状态，然而，在70摄氏度以上的Y状态产生的退火产生了一种新的绿色发射晶体状态（523nm，G状态）。此外，G状态可以分别在研磨和溶剂发光时转换为Y和R状态。相反，在丁基化DPP中未观察到那种新的现象，证明了有机荧光团的外周烷基链长度可以在确定固态聚集行为和荧光性质时起着多样的功能作用。该工作改善了一些类型的刺激响应材料，并且已经开发出烷基化DPP的新光学性质。

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    Ying Shian; Chen Mingshuai; Liu Zhongwei; Zheng Meng; Zhang Haichang; Xue Shanfeng; Yang Wenjun;

  • 作者单位

    Qingdao Univ Sci &

    Technol Sch Polymer Sci &

    Engn Minist Educ Shandong Prov QUST Key Lab Rubber Plast 53 Zhengzhou Rd Qingdao 266042 Peoples R China;

    Qingdao Univ Sci &

    Technol Sch Polymer Sci &

    Engn Minist Educ Shandong Prov QUST Key Lab Rubber Plast 53 Zhengzhou Rd Qingdao 266042 Peoples R China;

    Qingdao Univ Sci &

    Technol Sch Polymer Sci &

    Engn Minist Educ Shandong Prov QUST Key Lab Rubber Plast 53 Zhengzhou Rd Qingdao 266042 Peoples R China;

    Qingdao Univ Sci &

    Technol Sch Polymer Sci &

    Engn Minist Educ Shandong Prov QUST Key Lab Rubber Plast 53 Zhengzhou Rd Qingdao 266042 Peoples R China;

    Qingdao Univ Sci &

    Technol Sch Polymer Sci &

    Engn Minist Educ Shandong Prov QUST Key Lab Rubber Plast 53 Zhengzhou Rd Qingdao 266042 Peoples R China;

    Qingdao Univ Sci &

    Technol Sch Polymer Sci &

    Engn Minist Educ Shandong Prov QUST Key Lab Rubber Plast 53 Zhengzhou Rd Qingdao 266042 Peoples R China;

    Qingdao Univ Sci &

    Technol Sch Polymer Sci &

    Engn Minist Educ Shandong Prov QUST Key Lab Rubber Plast 53 Zhengzhou Rd Qingdao 266042 Peoples R China;

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  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
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