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An “Attachment Through Coordination” Approach to Side Chain Dendritic Polymers
Author(s) -
Andreopoulou Aikaterini K.,
Kallitsis Joannis K.
Publication year - 2005
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200500370
Subject(s) - macromonomer , side chain , chemistry , terpyridine , polymer chemistry , alkoxy group , polymerization , polymer , ruthenium , diol , combinatorial chemistry , organic chemistry , catalysis , alkyl , metal
This paper reports the synthesis of side chain dendritic polymers by a newly developed “attachment through coordination” methodology. Initially, aromatic/aliphatic polyethers bearing two uncomplexed terpyridine (tpy) groups per repeating unit are prepared, and dendritic fragments core‐functionalized with tpy‐Ru III Cl 3 moieties are afterwards attached onto these free tpy side groups. The two second‐generation alkoxy‐decorated side dendrons employed here provided solubility in the final polymeric system and potential for the development of ordered structures. Selective complexation between terpyridines and ruthenium ions proved to be an efficient tool for the complete coverage of all initial polymeric‐tpy groups. Perfectly substituted dendronized polymers carrying two (dendritic)tpy‐Ru II ‐tpy side moieties per repeating unit were thus synthesized, as demonstrated by their 1 H NMR characterization. A polymerizable macromonomer diol already carrying the side (dendritic)tpy‐Ru II ‐tpy moieties was synthesized at the same time, enabling subsequent polymerization through the “macromonomer” growth approach. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)