Modification of 1,2,4,5-tetrazine with cationic rhenium(i) polypyridine units to afford phosphorogenic bioorthogonal probes with enhanced reaction kinetics†
Abstract
New phosphorogenic bioorthogonal probes derived from mononuclear and binuclear rhenium(I) polypyridine complexes containing a 1,2,4,5-tetrazine moiety were designed; these complexes displayed substantial dienophile-induced emission enhancement, and accelerated reaction kinetics and could target a protein conjugate in living cells.