pH-Driven Conformational Switching of Quinoxaline Cavitands in Polymer MatricesThis work is supported by the Hierarchical Self Assembly of Polymeric Soft Systems (SASSYPOL-ITN) Marie Skłodowska Curie network, funded through the European Union Seventh Framework Programme (FP7-PEOPLE-2013-ITN) under Grant Agreement No. 607602.
Received: 26 May 2018
Accepted after revision: 29 June 2018
24 July 2018 (online)
Published as part of the Cluster Synthesis of Materials
While pH-driven interconversion of tetraquinoxaline cavitands (QxCav) from vase to kite conformation has been extensively studied both in solution and at interfaces, cavitands behavior in solid matrices is still unexplored. Therefore, the synthesis of a new class of quinoxaline cavitand based copolymers is here reported; a soluble linear poly(butyl methacrylate) (PBMA) and an insoluble cross-linked polydimethylsiloxane (PDMS), ensuring a convenient incorporation of the switchable unit, were chosen as polymer matrices. Conformational studies, performed both in solution and at the solid state, confirmed the retention of vase → kite switching behavior when moving from monomeric units to polymeric structures.
Key wordspH-responsive polymers - tetraquinoxaline cavitands - conformational switching - PDMS - PBMA
References and Notes
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