...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ChemPlusChem >1,3-Diaryl-beta-diketone Organic Crystals with Red Amplified Spontaneous Emission
【24h】

1,3-Diaryl-beta-diketone Organic Crystals with Red Amplified Spontaneous Emission

机译：1,3-二芳基-Diketone有机晶体，具有红色扩增的自发排放

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, 1-[4-(dimethylamino) phenyl]-3-(1-hydroxynaphthalen- 2-yl) propane-1,3-dione (DPHND) was designed and synthesized to construct red-emissive organic solids. Although DPHND was weakly yellow fluorescent in organic solvents, its emission intensity showed a significant enhancement when a relatively large amount of poor solvent was added, and displayed typical aggregation-induced enhanced emission (AIEE). Notably, the crystals formed by a solution-diffusion approach showed bright red fluorescence (lambda(em)= 621 nm), which was greatly redshifted by about 60 nm compared with that in solution. Molecules in crystals took a planar conformation and formed a herringbone packing structure, which effectively avoided pi center dot center dot center dot pi interactions, and hence contributed to the enhancement of the fluorescent quantum yield. The fluorescence spectrum of the long striplike crystals of DPHND gradually narrowed accompanied by a dramatic enhancement of the intensity when the pump energy of the laser beam was increased (355 nm), which indicated that these red-emissive crystals displayed typical amplified spontaneous emission (ASE). In addition, DPHND with an extended p-conjugated structure clearly improved its thermostability compared with the previously reported analogues, which may pave the way for its application in future electrically driven organic solid-state lasers.
机译：在该研究中，设计并合成了1- [4-（二甲基氨基）苯基] -3-（1-羟基萘-2-基-2-基）丙烷-1,3-二酮（DPHND）以构建红发射有机固体。虽然DPHND在有机溶剂中是弱黄色的荧光，但是当加入相对大量的差的溶剂时，其排放强度显示出显着的增强，并显示出典型的聚集诱导的增强的发射（AIEE）。值得注意的是，通过溶液扩散方法形成的晶体显示出鲜红色荧光（Lambda（EM）= 621nm），其与溶液中的溶液相比大约60nm大大红移。晶体中的分子采用平面构象并形成了人字形填充结构，其有效地避免了PI中心点中心点中心点PI相互作用，因此有助于增强荧光量子产率。当激光束的泵能量增加（355nm）时，Dphnd的长带状晶体的荧光光谱逐渐变窄，这表明这些红发光晶体显示出典型的扩增自发发射（ASE ）。另外，与先前报道的类似物相比，具有延伸的P缀合结构的DPHND明显提高了其热稳定性，这可能在未来电驱动的有机固态激光器中铺平其应用。

著录项

  • 来源
    《ChemPlusChem》 |2016年第12期|共6页
  • 作者

    Tang Baolei; Zhang Houyu; Cheng Xiao; Ye Kaiqi; Zhang Hongyu;

  • 作者单位

    Jilin Univ State Key Lab Supramol Struct &

    Mat Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Supramol Struct &

    Mat Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Supramol Struct &

    Mat Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Supramol Struct &

    Mat Coll Chem Changchun 130012 Peoples R China;

    Jilin Univ State Key Lab Supramol Struct &

    Mat Coll Chem Changchun 130012 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

    fluorescence; ketones; luminescence; molecular structure; X-ray diffraction;

    机译：荧光;酮;发光;分子结构;X射线衍射;

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