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Self‐Assembly with Block Copolymers through Metal Coordination of SCS–Pd II Pincer Complexes and Pseudorotaxane Formation
Author(s) -
South Clinton R.,
Higley Mary Nell,
Leung Ken C.F.,
Lanari Daniela,
Nelson Alshakim,
Grubbs Robert H.,
Stoddart J. Fraser,
Weck Marcus
Publication year - 2006
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.200501028
Subject(s) - pincer movement , copolymer , norbornene , isothermal titration calorimetry , polymer chemistry , chemistry , polymer , self assembly , organic chemistry , catalysis
Abstract Poly(norbornene)‐based block copolymers containing side chains of palladated pincer complexes/dibenzo[24]crown‐8 or palladated pincer complexes/dibenzylammonium salts were synthesized. Noncovalent functionalization was accomplished with their corresponding recognition units through simple 1:1 addition with association constants ( K a ) greater than 10 5 m −1 . The self‐assembly processes were monitored by using both 1 H NMR spectroscopy and isothermal titration calorimetry. In all cases, we found that the self‐assembly of the recognition units along each polymer block does not preclude the self‐assembly processes along the other block.