Control of the supramolecular excimer formation of thioflavin T within a cucurbit[8]uril host: a fluorescence on/off mechanism.
On or off? A new excimer band at lambda = 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 Ca(2+) was demonstrated as an on/off fluorescence switch (see picture).
Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. jyotim@barc.gov.in
Jyotirmayee
J
Mohanty
Sharmistha Dutta
SD
Choudhury
Hari P
HP
Upadhyaya
Achikanath C
AC
Bhasikuttan
Haridas
H
Pal