Naphthalimide-based a highly selective two-photon fluorescent probe for imaging of hydrogen sulfide in living cells and inflamed tissue of mouse model
作者:Pinghua Ou、Yali Wang、Cong Hao、Yongbo Peng、Li-yi Zhou
DOI:10.1016/j.saa.2020.118886
日期:2021.1
(D-π-A)-structured naphthalimide derivative as the two-photon (TP) fluorophore and a 4-dinitrobenzene-ether (DNB) with a strong intramolecular charge transfer (ICT) effect as the recognition moiety, we reported a novel TP bioimaging probe NP-H2S for H2S with improved sensitivity. The NP-H2S exhibits very low background fluorescence in the absence of H2S, and a significant 258-fold fluorescence intensity enhancement
硫化氢(H 2 S)是一种非常重要的第三种内源性产生的气态信号分子,在生物系统的生理和病理调节过程中起着关键作用。尽管已经报道了许多H 2 S荧光探针,但是发炎组织中H 2 S的生理学和病理学之间的关系仍然不清楚。本文中,通过采用供体-π-受体(D-π-A)结构的萘二甲酰亚胺衍生物作为双光子(TP)荧光团和4-二硝基苯-醚(DNB),具有很强的分子内电荷转移(ICT)作用。作为识别部分,我们报道了一种新型的TP生物成像探针NP - H 2 S用于H 2具有更高的灵敏度。的NP - ħ 2小号表现出在不存在H的非常低的背景荧光2 S,和在H的存在下观察到一个显著258倍的荧光强度增强2 S,从而导致高的灵敏度和选择性成H 2 S IN观察到的检测极限为18.8 nM的水溶液。该探针还显示出对H 2 S的宽线性响应浓度范围(0–10.0μM)和高选择性。所有这些功能都直接监视H的有利2复杂生物样品S中。然后将其用于H