Abstract
We report here the design and synthesis of a nanovalve system consisting of a carrier based on mesoporous silica nanoparticles and mechanized with a square planar Pd(ii)-templated pseudo-rotaxane. This nanovalve was responsive to demetalation by cyanide anions, followed by the concomitant release of both the macrocycles and the contents of the pores, in this instance dye indicators. Gate-keeping of the mesopores was achieved by the formation of an intact coordination between the monodentate pyridine axles soluble in aqueous solution and the tridentate macrocycle Pd complex via a square planar metal template approach. A facile nanovalve system responsive to an anionic stimulus was therefore developed. Luminescence spectrometry was successfully used to demonstrate that the anion-stimulated dye release from the nanovalves gated by the Pd(ii) metal template was independent of pH.
Original language | English (US) |
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Pages (from-to) | 6414-6422 |
Number of pages | 9 |
Journal | Journal of Materials Chemistry A |
Volume | 3 |
Issue number | 12 |
DOIs | |
State | Published - Mar 28 2015 |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry 2015.