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。
Based on three rationally designed pyrrole-appended o-carborane derivatives, we present that fluorescence properties of crystalline materials are highly dependent on intermolecular interaction and steric hinderance. Though the three molecules are similar in structure, single crystals of the three compounds showed obvious difference in molecular stacking and fluorescence behavior. Systematic studies indicate