Vapochromic Behaviors of A Solid‐State Supramolecular Polymer Based on Exo‐Wall Complexation of Perethylated Pillar[5]arene with 1,2,4,5‐Tetracyanobenzene
- 19 January 2021
- journal article
- research article
- Published by Wiley in Angewandte Chemie
- Vol. 60 (15), 8115-8120
- https://doi.org/10.1002/anie.202013701
Abstract
The research for the solid‐state supramolecular polymers with specific functions accelerates the development of supramolecular and materials sciences. Here, we discover the different complexation modes of perethylated pillar[5]arene ( EtP5 ) with 1,2,4,5‐tetracyanobenzene ( TCNB ) in various solvents. Driven by charge‐transfer interaction, TCNB is enclosed in the cavity of EtP5 in CHCl 3 , while TCNB complexes with EtP5 at the exo‐wall of EtP5 in CH 2 Cl 2 . This is because the size of CH 2 Cl 2 matches the cavity of EtP5 , forcing TCNB to complex with the exo‐wall of EtP5 . Furthermore, we fabricate a vapochromic solid‐state supramolecular polymer by exploiting the exo‐wall complexation, which turns from brown to reddish brown or black after adsorption of alkyl aldehyde vapors. The adsorptive nature for alkyl aldehyde vapors comes from the unoccupied cavity of EtP5 based on C–H···π interactions. The vapochromic property is attributed to the change of the charge‐transfer interaction caused by molecular rearrangement induced by vapor‐capture in the solid‐state supramolecular polymer.Keywords
Funding Information
- National Natural Science Foundation of China (22035006)
This publication has 67 references indexed in Scilit:
- Donor–acceptor-type supramolecular polymers on the basis of preorganized molecular tweezers/guest complexationChemical Society Reviews, 2018
- Supramolecular Pseudorotaxane Polymers from Biscryptands and BisparaquatsJournal of the American Chemical Society, 2018
- Supramolecular Polymers: Historical Development, Preparation, Characterization, and FunctionsChemical Reviews, 2015
- Responsive Supramolecular Polymers Based on the Bis[alkynylplatinum(II)] Terpyridine Molecular Tweezer/Arene Recognition MotifAngewandte Chemie, 2014
- Responsive Supramolecular Polymers Based on the Bis[alkynylplatinum(II)] Terpyridine Molecular Tweezer/Arene Recognition MotifAngewandte Chemie, 2014
- Cross-Linked Supramolecular Polymer Gels Constructed from Discrete Multi-pillar[5]arene Metallacycles and Their Multiple Stimuli-Responsive BehaviorJournal of the American Chemical Society, 2014
- Formation of Linear Supramolecular Polymers That Is Driven by C-H⋅⋅⋅π Interactions in Solution and in the Solid StateAngewandte Chemie, 2011
- Formation of Linear Supramolecular Polymers That Is Driven by C-H⋅⋅⋅π Interactions in Solution and in the Solid StateAngewandte Chemie, 2011
- Supramolecular PolymerizationChemical Reviews, 2009
- Supramolecular polymersNature, 2008