is one of the smallest fluorophores with excellent fluorescence properties. However, its potentials in biological applications are limited by its relatively short excitation wavelengths in the UV spectral region. It is the aim of this manuscript to develop coumarin analogs absorbing and emitting in the visible range through rational molecular engineering. We designed and synthesized C-coumarin dyes
紧凑型荧光团是
生物缀合所需要的,因为它们最小程度地干扰了蛋白质或细胞器的天然
生物学功能。但是,它们的吸收和发射波长通常很短,对于实际应用而言并不理想。例如,
香豆素是具有优异荧光性质的最小的荧光团之一。然而,其在
生物应用中的潜力受到其在紫外光谱区域中相对较短的激发波长的限制。该手稿的目的是通过合理的分子工程开发在可见光范围内吸收和发射的
香豆素类似物。我们设计并合成了C-
香豆素染料,发现它们的最大吸收波长很好地位于可见光区域内,从而使它们在活细胞成像中比O-
香豆素更优越。