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相关概念视频

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Photoluminescence: Applications01:14

Photoluminescence: Applications

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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相关实验视频

Updated: Sep 9, 2025

Conducting Multiple Imaging Modes with One Fluorescence Microscope
08:32

Conducting Multiple Imaging Modes with One Fluorescence Microscope

Published on: October 28, 2018

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通过对称性破坏实现的基于单元的多色辐射

Simin Lin1, Xubin Wang1, Huisi Li1

  • 1Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of New Concept Sensors and Molecular Materials, Shaanxi Normal University, Xi'an, Shaanxi, PR China.

Nature communications
|August 30, 2025
PubMed
概括
此摘要是机器生成的。

研究人员为单元系统开发了一种新型分子对称破坏策略,以实现依赖激发的多色发射. 这一突破使得先进的发光材料和传感器能够进行化学检测.

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Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes
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相关实验视频

Last Updated: Sep 9, 2025

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Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy
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Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes
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Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes

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科学领域:

  • 材料科学
  • 有机化学
  • 光物理学

背景情况:

  • 实现单元系统的激发依赖的多色发射,独立于聚合,是材料科学中的一个重大挑战.
  • 现有的方法通常与基于激发波长的发射特性控制的创新原则相扎.

研究的目的:

  • 引入分子对称性破坏策略,使单个分子能够表现出取决于激发的多色辐射.
  • 为此设计和合成一种新的星形分子 (Ph-3CP).
  • 展示该分子在开发单元光传感器阵列中的应用.

主要方法:

  • 一个星形分子的设计和合成,1,3,5-(4-tert-butylphenyl-o-carboranyl-4-phenyl) (Ph-3CP).
  • 对溶液,无形和晶体状态的发射特性进行研究.
  • 来自不同溶剂的结晶,
  • 理论计算以预测破坏对称性的结构.
  • 研究结构与属性关系以了解放松途径.
  • 一个单元光传感器阵列的开发.

主要成果:

  • 设计的Ph-3CP分子具有近175nm的广泛激发依赖的发射范围.
  • 通过结晶,通过理论计算确认了不同的不对称对应物.
  • 两种不同的放松途径被确定为排放行为的主导.
  • 一个单元光传感器阵列已成功开发用于化气蒸汽检测.

结论:

  • 分子对称性破坏是设计多功能发光材料的有效策略.
  • 通过控制不对称的激发状态工程允许从单个化学实体中调节多色发射.
  • 这种方法为开发先进的传感器和光学材料提供了途径.