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相关概念视频

Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Channel Rhodopsins01:11

Channel Rhodopsins

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Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
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Reporter Genes02:11

Reporter Genes

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Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
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相关实验视频

Updated: May 15, 2025

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes
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基于二氧化乙烯的红光发射AIEgens.

Debasish Mandal1, Saugat Mondal2, Abani Sarkar1

  • 1Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.

ACS applied materials & interfaces
|April 8, 2025
PubMed
概括

研究人员开发了新的红光发射聚合诱导排放 (AIE) 分子,基于E-二甲骨架. 这些新型AIEgens提供可调节的光物理特性和增强的光,用于传感和生物成像应用.

科学领域:

  • 材料科学 材料科学 材料科学
  • 有机化学 有机化学
  • 光物理学的光学物理学

背景情况:

  • 聚合诱导排放 (AIE) 分子对于生物医学探针,化学传感器和光电子等应用至关重要.
  • 四乙烯 (TPE) 衍生物是AIE的基准材料,但在可调性和排放范围方面存在局限性.
  • 现有的AIE材料往往在更高能量的区域具有吸收和排放,限制了它们的使用.

研究的目的:

  • 设计和合成新的,高度对称的,发射红光的AIE活性分子.
  • 通过实现可调节的光物理性质,克服TPE衍生物的局限性.
  • 探索新的AIEgens用于传感和生物成像的先进应用.

主要方法:

  • 结构工程的E-二甲 (DPE) 骨架,以创建新的AIEgens.
  • 通过α,α-二甲基和凝结反应合成基于DPE的AIE基因 (Tz和BTz).
  • 包括实验,光谱,理论研究和X射线晶体学在内的综合性表征.

主要成果:

  • 合成基于DPE的AIEgens (Tz和BTz) 具有π扩展的结合和多个异构原子.
  • 在600nm以上的可见激发和发射光谱中,通过大斯托克斯转移 (3632-5058 cm-1) 实现了可见的激发和发射光谱.
关键词:
发射红灯的AIE基因可以发射红灯.活细胞成像 活细胞成像响应pH的AIE基因超分子化学 超分子化学这是一种蒸汽色素主义.

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  • 由于非共价相互作用和在刺激响应传感器和活细胞成像中成功应用,证明了增强的聚合和固态光.

    • 结论:

    • 设计的基于DPE的AIEgens具有理想的红光发射和可调节性质.
    • 这些分子作为开发先进功能材料的多功能平台.
    • 该研究强调了这些AIEgens在智能传感器和生物成像应用中的潜力.