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Electrochemiluminescence of Water‐Soluble Poly(amidoamine) Dendrimers Conjugated with Multiple Ru(II) Tris(bipyridine) Moieties
Author(s) -
Lee Hyein,
Kim Joohoon
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201700101
Subject(s) - dendrimer , amidoamine , poly(amidoamine) , conjugated system , electrochemiluminescence , amine gas treating , chemistry , bipyridine , tris , covalent bond , polymer chemistry , ruthenium , aqueous solution , photochemistry , combinatorial chemistry , organic chemistry , polymer , catalysis , biochemistry , electrode , crystal structure
Intense electrochemiluminescence (ECL) of water‐soluble dendritic conjugates, which are poly(amidoamine) (PAMAM) dendrimers conjugated with multiple Ru(II) tris(bipyridine) ([Ru(bpy) 3 ] 2+ , where bpy=2,2’‐bipyridine) units on the periphery, is demonstrated in the absence of any additional co‐reactant. The ECL results were investigated by taking into account the co‐reactant effect of PAMAM dendrimers. The water‐soluble dendritic conjugates were synthesized by derivatizing amine‐terminated 4 th ‐generation PAMAM dendrimers (G4‐NH 2 ) through covalent linkages with [Ru(bpy) 3 ] 2+ ‐ N ‐hydroxysuccinimide esters. Interestingly, the synthesized dendritic conjugates alone exhibit significantly enhanced oxidative‐reduction ECL, that is, an approximate nine‐fold increase compared to conventional ECL obtained from corresponding aqueous mixtures of free G4‐NH 2 dendrimers and [Ru(bpy) 3 ] 2+ complexes.