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Porphyrinoid rotaxanes: building a mechanical picket fence.


ABSTRACT: Building on recent progress in the synthesis of functional porphyrins for a range of applications using the Cu-mediated azide-alkyne cycloaddition (CuAAC) reaction, we describe the active template CuAAC synthesis of interlocked triazole functionalised porphyrinoids in excellent yield. By synthesising interlocked analogues of previously studied porphyrin-corrole conjugates, we demonstrate that this approach gives access to rotaxanes in which the detailed electronic properties of the axle component are unchanged but whose steric properties are transformed by the mechanical "picket fence" provided by the threaded rings. Our results suggest that interlocked functionalised porphyrins, readily available using the AT-CuAAC approach, are sterically hindered scaffolds for the development of new catalysts and materials.

SUBMITTER: Ngo TH 

PROVIDER: S-EPMC6103255 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

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Porphyrinoid rotaxanes: building a mechanical picket fence.

Ngo T H TH   Labuta J J   Lim G N GN   Webre W A WA   D'Souza F F   Karr P A PA   Lewis J E M JEM   Hill J P JP   Ariga K K   Goldup S M SM  

Chemical science 20170804 9


Building on recent progress in the synthesis of functional porphyrins for a range of applications using the Cu-mediated azide-alkyne cycloaddition (CuAAC) reaction, we describe the active template CuAAC synthesis of interlocked triazole functionalised porphyrinoids in excellent yield. By synthesising interlocked analogues of previously studied porphyrin-corrole conjugates, we demonstrate that this approach gives access to rotaxanes in which the detailed electronic properties of the axle componen  ...[more]

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