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Quinoline-Based Two-Photon Fluorescent Probe for Nitric Oxide in Live Cells and Tissues

机译:基于喹啉的双光子荧光探针用于活细胞和组织中的一氧化氮

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摘要

A two-photon fluorescent probe (QNO) for nitric oxide is reported. The probe is designed with a photoinduced electron transfer (PeT) mechanism and shows 12-fold fluorescence enhancement toward NO. Adopting a quinoline derivative as the fluorophore, QNO has a large two-photon action cross section value of 52 GM and long-wavelength emission. It also features high selectivity, low cytotoxicity, and pH insensitivity. By utilizing two-photon microscopy (TPM), QNO can detect NO in live cells and live tissues at a depth of 90-180 μm.
机译:一氧化氮的双光子荧光探针(QNO)被报道。该探针采用光致电子转移(PeT)机制设计,对NO表现出12倍的荧光增强。 QNO采用喹啉衍生物作为荧光团,其双光子作用截面值为52 GM,并且具有长波长发射。它还具有高选择性,低细胞毒性和pH敏感性。通过使用双光子显微镜(TPM),QNO可以检测90-180μm深度的活细胞和活组织中的NO。

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