Publication details
Supramolecular assembly of 2,7-dimethyldiazapyrenium and cucurbit[8]uril: A new fluorescent host for detection of catechol and dopamine
| Authors | |
|---|---|
| Year of publication | 2005 |
| Type | Article in Periodical |
| Magazine / Source | Chemistry - A European Journal |
| MU Faculty or unit | |
| Citation | |
| Field | Macromolecular chemistry |
| Keywords | cucurbiturils; self-assembly |
| Description | The formation of a highly stable inclusion complex between 2,7-dimethyldiazapyrenium (Me2DAP2+) and the cucurbit[8]uril host (CB8) was demonstrated by X-ray crystallog.; MALDI-TOF mass spectrometry; and 1H NMR, electronic absorption, and emission spectroscopy. The equil. assocn. const. was detd. to be 8.9(ą0.2) 105 L mol-1 from UV-visible data and 8.4(ą1.5) 105 L mol-1 from fluorescence data. The Me2DAP2+CB8 inclusion complex acted as a host to bind compds. contg. arom. p-donor moieties (D), such as catechol and dopamine. This point was demonstrated by 1H NMR spectroscopy, and electrochem. and emission measurements. Fluorescence detection of the Me2DAP2+DCB8 ternary complexes was evident in aq. soln. and on the surface of silica particles, to which fluorescent diazapyrenium units had been covalently immobilized. |