作者:Kevin Belfield、Sheng Yao、Katherine Schafer-Hales、Ion Cohanoschi、Florencio Hernández
DOI:10.1055/s-2006-948165
日期:2006.8
A hydrophilic trans-4,4′-diaminostilbene derivative was prepared by the introduction of amideamino peripheral substituents. Very high aqueous solubility was achieved (>15 mM), making it possible as a fluorescent probe for biological imaging. The relatively straightforward synthetic methodology has great potential to transform even large hydrophobic two-photon absorbing chromophores into hydrophilic derivatives. The fluorescence quantum yield of 0.27 for the diaminostilbene in water is sufficiently high for use as a fluorescent probe. In addition, two-photon fluorescence images of NT2 cells stained by this probe were also obtained.
通过引入酰氨基团作为外围取代基,制备了一种亲水的反式4,4′-二氨基芪衍生物。该化合物具有极高的水溶性(>15 mM),因此可作为生物成像的荧光探针。其相对简便的合成方法具有很大的潜力,可以将大型疏水性双光子吸收生色团转化为亲水性衍生物。该二氨基芪衍生物在水中的荧光量子产率为0.27,足以用作荧光探针。此外,还获得了经该探针染色的NT2细胞的双光子荧光图像。