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激发近红外光激发的-碳素小分子作为两光子光核酸探测器

Yanqing Sun¹, Bi Wu¹, Xinyu Liu¹

¹College of Pharmacy, Jiamusi University, Jiamusi 154007, China.

Molecules (Basel, Switzerland)

|March 13, 2024

概括

三种新型的烯-碳醇衍生物表现出显著的两光子吸收和光特性,使它们成为核酸DNA成像的前景. 这些材料表现出极好的光稳定性和核定位,性能优于DAPI.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
生物光子学生物光子学

背景情况:

两光子吸收 (TPA) 材料对于先进的成像技术至关重要,因为它们的透深度提高,光损伤减少.
开发具有高TPA截面和光稳定的新型光探针对于生物应用,特别是DNA染色至关重要.

研究的目的:

为了合成和描述三种新的烯-碳醇衍生物,以了解它们作为两光子光探针的潜力.
为了评估它们的TPA特性,光发射,DNA染色能力和光稳定性.

主要方法:

三种烯-碳醇衍生物的合成:M4,H2和H4.
测量两个光子吸收截面和光发射光谱.
与Hoechst 33342相比,核定位和DNA染色功效的评估.
在持续近红外激光照射下对光稳定性的评估.

主要成果:

合成的化合物 (M4,H2,H4) 分别表现出 491,515 和 512 GM 的 TPA 截面.
在近红外激发下,在650nm左右观察到光辐射.
这些化合物表现出有效的核酸DNA染色,其核定位与Hoechst 33342.2相比.
与DAPI相比,观察到更高的光稳定性,平均光衰变速率较低 (0.016%/s,0.020%/s,0.023%/s).

结论:

新型烯-碳醇衍生物显示出出色的两光子吸收和光特性.
这些化合物是核酸DNA的有效和光稳定的光探针.
他们的表现表明了先进的生物成像应用的潜力.

关键词:

接近红外线的激光.核酸 DNA 探针核酸 DNA 探针奇诺 - 碳醇衍生物两个光子吸收的吸收.

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