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Main‐Chain and Pendant Poly([2]catenane)s Incorporating Complementary π‐Electron‐Rich and ‐Deficient Components
Author(s) -
Hamers Christoph,
Raymo Françisco M.,
Stoddart J. Fraser
Publication year - 1998
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/(sici)1099-0690(199810)1998:10<2109::aid-ejoc2109>3.0.co;2-m
Subject(s) - catenane , chemistry , monomer , polymer chemistry , copolymer , hydroxymethyl , isocyanate , cyclophane , stereochemistry , organic chemistry , polymer , molecule , polyurethane
A main‐chain poly([2]catenane), incorporating an average of 25 repeating [2]catenane units and having an M n value of 35 kg mol −1 , was synthesized by the polyesterification of a [2]catenane monomer composed of a bipyridinium‐based tetracationic cyclophane mechanically interlocked with a 1,5‐dioxynaphthalene‐based macrocyclic polyether. Similarly, two main‐chain poly(bis[2]catenane)s, both incorporating an average of 15 repeating bis[2]catenane units and both having M n values of 45 kg mol −1 , were prepared by the copolymerizations of a bis[2]catenane monomer, possessing two hydroxymethyl functions with an appropriate bis(isocyanate). The same copolymerization was employed in order to produce a pendant poly([2]catenane), incorporating an average of 20 repeating [2]catenane units and having an M n value of 27 kg mol −1 , from a [2]catenane monomer possessing two hydroxymethyl groups on its macrocyclic polyether component.