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Routes to Metallodendrimers: Synthesis of Isomeric Neutral Metallomacromolecules Based on Bis(2,2′:6′,2″‐terpyridine)ruthenium( II ) Connectivity
Author(s) -
Newkome George R.,
Yoo Kyung Soo,
Kim Hyung Jin,
Moorefield Charles N.
Publication year - 2003
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200304998
Subject(s) - terpyridine , ruthenium , chemistry , macromolecule , solubility , electrochemistry , combinatorial chemistry , structural isomer , aqueous solution , stereochemistry , polymer chemistry , metal , organic chemistry , catalysis , biochemistry , electrode
Routes for the syntheses of isomeric, zwitterionic, bisterpyridine–Ru II ‐based macromolecules are described. Access to these novel architectures is facilitated by the construction of terpyridine‐modified, 1→3 C ‐branched, ester‐terminated building blocks. Constitutional isomers result from the interchangable placement of methyl and tert ‐butyl ester groups on both the branched framework near the Ru II centers and the termini of the branched construct. Water solubility is imparted to each isomer through selective transformation of the tert ‐butyl esters to their corresponding carboxylates. Along with the standard characterization techniques, electrochemical and spectroscopic data also support the structural formation.