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Terpyridine-based metallo-organic cages and supramolecular gelation by coordination-driven self-assembly and host–guest interaction.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 10/28/2018, Vol. 47 Issue 40, p14227-14232, 6p
- Publication Year :
- 2018
-
Abstract
- Host–guest complexation based on terpyridine (tpy) three-dimensional (3D) metallo-cages has received less attention due to the complicated structure and solubility issues. Herein, a three-armed metallo-organic ligand (L) was synthesized via three 120°-bent bis-tpy groups as a rigid tetrakis-tpy core, which possesses one benzo-21-crown-7 (B21C7) for further host–guest interaction. The metallo-organic cages [M<subscript>3</subscript>L<subscript>2</subscript>] with molecular weights up to 13 000 Da and giant cavities were prepared in near-quantitative yield by self-assembly of L with metal ions, such as Zn<superscript>2+</superscript> and Fe<superscript>2+</superscript>. The 3D metallo-supramolecules were characterized and their formation was supported by NMR, DOSY, ESI-MS and TEM. Hosts [M<subscript>3</subscript>L<subscript>2</subscript>] were threaded through a difunctional alkylammonium salt by host–guest interactions to polymerize, and subsequently generate novel metallo-gels between [Zn<subscript>3</subscript>L<subscript>2</subscript>] and bis-ammonium salt (N<superscript>2</superscript>). [ABSTRACT FROM AUTHOR]
- Subjects :
- ORGANOMETALLIC compounds
SUPRAMOLECULES
HOST-guest chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 47
- Issue :
- 40
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 132429826
- Full Text :
- https://doi.org/10.1039/c8dt01044g