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Convenient construction of unique bis-[1]rotaxanes based on azobenzene-bridged dipillar[5]arenes.
- Source :
- Journal of Inclusion Phenomena & Macrocyclic Chemistry; Apr2022, Vol. 102 Issue 3/4, p261-270, 10p
- Publication Year :
- 2022
-
Abstract
- A series of azobenzene-bridged dipillar[5]arenes were conveniently synthesized by coupling reaction of aminoalkyl-functionalized pillar[5]arenes with azobenzene-4,4'-dioxyacetic acid or azobenzene-4,4'-dioxybutanoic acid in dry chloroform under the combinatorial catalysis of HOBt/EDCl. <superscript>1</superscript>H NMR, 2D NOESY spectra and single crystal structure clearly indicated that the unique bis-[1]rotaxanes could be formed by threading two diaminoalkylene units into the two cavities of pillar[5]arenes depending on the length of the diaminoalkylene chains. Under light irradiation at 365 nm, the trans-azobenzene unit transferred to cis-configuration, while the basic bis-[1]rotaxane structure was kept unchanged. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13883127
- Volume :
- 102
- Issue :
- 3/4
- Database :
- Complementary Index
- Journal :
- Journal of Inclusion Phenomena & Macrocyclic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 155779872
- Full Text :
- https://doi.org/10.1007/s10847-021-01115-0