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Hetero type III‐B rotaxane dendrimers
Author(s) -
Kwan ChakShing,
Leung Ken ChamFai
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.202000176
Subject(s) - dendrimer , rotaxane , chemistry , azobenzene , catenane , polymer chemistry , cycloaddition , stereochemistry , photochemistry , supramolecular chemistry , organic chemistry , molecule , catalysis
Type III‐B rotaxane dendrimer is a member of the rotaxane dendrimer family, but it is defined as dendritic polyrotaxane, branched through rings. Such rotaxane dendrimers have been synthesized through versatile copper‐catalyzed azide‐alkyne cycloaddition reactions. In order to incorporate more functionalities into type III‐B rotaxane dendrimers, three different potential functionalities—azobenzene toward light switch, daisy chain toward higher degree of contraction, and extension and cyclobis (paraquat‐ p ‐phenylene) (CBPQT) toward redox chemistry—were combined into the original design of type III‐B rotaxane dendrimers. Two azo‐based G1/G2 and four new G1 and G2 hetero type III‐B rotaxane dendrimers were synthesized and characterized by 1 H NMR spectroscopy and electrospray ionization mass spectrometry.