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. 2019 Nov;40(22):e1900376.
doi: 10.1002/marc.201900376. Epub 2019 Sep 16.

Supramolecular Competitive Host-Guest Interaction Induced Reversible Macromolecular Metamorphosis

Debaditya Bera  1 , Zhanyao Hou  1 , Mathias Glassner  1 , Joel Lyskawa  2 , Aurélie Malfait  2 , Patrice Woisel  2 , Richard Hoogenboom  1
Affiliations

Supramolecular Competitive Host-Guest Interaction Induced Reversible Macromolecular Metamorphosis

Debaditya Bera et al. Macromol Rapid Commun. 2019 Nov.

Abstract

In this work, a rational strategy of competitive host-guest complexation between dioxynaphthalene (Naph) and tetrathiafulvalene (TTF) subunits as guests and cyclophane cyclobis(paraquat-p-phenylene) (CBPQT4+ ) module as host is exploited to modify the macromolecular architecture, so-called supramolecular metamorphosis, in aqueous media. The architectures of the polymers can be reversibly transformed from a linear diblock copolymer AB to a linear AC block copolymer or from a linear block copolymer to a comb copolymer by redox switching. Interestingly, as TTF- and Naph-based complexes feature different characteristic colors, it offers a great opportunity to directly observe nanoscaled macromolecular metamorphosis of materials with the naked eye.

Keywords: host-guest complexation; supramolecular metamorphosis; thermoresponsive properties.

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