Fluorophores derived from photoactivatable azide-pi-acceptor fluorogens or from a thermal reaction of an azide-pi-acceptor fluorogen with an alkene or alkyne are disclosed. Fluorophores derived from a thermal reaction of an alkyne-pi-acceptor fluorogen with an azide are also disclosed. The fluorophores can readily be activated by light and can be used to label a biomolecule and imaged on a single-molecule level in living cells.
从可光活化的
叠氮-π-受体荧光发色团或从
叠氮-π-受体荧光发色团与烯烃或
炔烃的热反应中衍生的荧光色团被披露。还披露了从
炔烃-π-受体荧光发色团与
叠氮的热反应中衍生的荧光色团。这些荧光色团可以很容易地被光激活,并可用于标记
生物分子,并在活细胞中以单分子
水平进行成像。