Cu2+-induced blue shift of the pyrene excimer emission: a new signal transduction mode of pyrene probes.
A pentiptycene-bispyrenyl system (1) has been synthesized and investigated as a fluorescent chemosensor for metal ions. A novel blue shift along with an intensity enhancement of the pyrene excimer emission is observed for 1 in the presence of Cu(2+). Such a new signal transduction mode of pyrene probes results from the formation of a static pyrene excimer that has very different characteristics from its dynamic counterpart.
Department of Chemistry, National Central University, Chung-Li, Taiwan 32054. jsyang@rs250.ncu.edu.tw
J S
JS
Yang
C S
CS
Lin
C Y
CY
Hwang