highly selective colorimetric and ratiometric “two-stage”/“off–on” type fluorescent probe with an ability to exclude other heavy and transition metal ions has been designed and synthesized. Low concentrations of Fe3+ cause through-space charge transfer which leads to fluorescence quenching exceeds 96%, and a further increase of Fe3+ concentration results in the formation of a complex with the maximum
设计并合成了一种高度选择性的比色和比例式“两阶段” /“关闭-开启”型荧光探针,该探针能够排除其他重
金属和过渡
金属离子。Fe 3+的浓度低会引起空间电荷转移,导致荧光猝灭超过96%,Fe 3+浓度的进一步增加会导致形成最大发射峰为1,3-bis((E)-2-(
吡啶-4-基)
乙烯基)-2-
甲氧基苯(BPVMB)发生了很大的位移100纳米(从416到516纳米),通过荧光,吸收检测和飞秒瞬态吸收测量分子内电荷转移(ICT)的基础。