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Control of the Supramolecular Excimer Formation of Thioflavin T within a Cucurbit[8]uril Host: A Fluorescence On/Off Mechanism |
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| Authors: | Jyotirmayee Mohanty Dr. Sharmistha Dutta Choudhury Dr. Hari P. Upadhyaya Dr. Achikanath C. Bhasikuttan Dr. Haridas Pal Dr. |
| Affiliation: | Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, Fax: (+91)?22‐25505151/25519613 |
| Abstract: | On or off? A new excimer band at λ=570 nm was visualized during the noncovalent host–guest interaction between thioflavin T (ThT) and cucurbit[8]uril (CB8). Controlled dissociation of this assembly in the presence of Ca2+ was demonstrated as an on/off fluorescence switch (see picture).  |
| Keywords: | cucurbituril excimer emission fluorescence host– guest systems supramolecular chemistry thioflavin T |