Pyrrole substitution produced fluorogenicrhodamine probes with high brightness, large Stokes shift, red-shifted fluorescence emission and enhanced environmental sensitivity. Good cell permeability, low toxicity and favorable turn on fluorescence response to low polarity, high viscosity as well as acidity facilitate wash-free high contrast STED and lifetime imaging of lysosomes in live cells.
吡咯取代产生的荧光罗丹明探针具有高亮度、大斯托克斯位移、红移荧光发射和增强的环境敏感性。良好的细胞渗透性、低毒性以及对低极性、高粘度和酸性的有利荧光响应,有助于活细胞中溶酶体的免洗高对比度 STED 和终生成像。