Current time in Korea 20:07 Oct 17 (Tue) Year 2017 KCS KCS Publications
KCS Publications
My Journal Log In Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 5
BKCSDE 28(5)
May 20, 2007 

 
Title
Highly Selective Fluorescent Signaling for Al3+ in Bispyrenyl Polyether
Author
Hyun Jung Kim, Su Ho Kim, Duong Tuan Quang, Ja Hyung Kim, Il-Hwan Suh, Jong Seung Kim*
Keywords
Pyrene, Excimer, Fluorescence, Aluminium ion
Abstract
A series of bispyrenyl-polyether have been synthesized and investigated as a fluorescent chemosensor for metal ions. The results showed that bispyrenyl-polyether system is selective towards Al3+ ion over other ions tested. In free ligand, excited at 343 nm, it displays a strong excimer emission at around 475 nm with a weak monomer emission at 375 nm. A ratiometry of monomer (375 nm) increase and excimer (475 nm) quenching was shown only when Al3+ ion is bound to ligand, because two facing pyrene groups form a less efficient overlap of π?π stacking compared with that of free ligand.
Page
811 - 815
Full Text
PDF