1.
J Am Chem Soc
; 126(39): 12701-8, 2004 Oct 06.
Article
in English
| MEDLINE
| ID: mdl-15453804
ABSTRACT
Time-resolved and steady-state emission characterization of 10-hydroxycamptothecin reveals a rich but less complex proton-transfer behavior than its parent hydroxyquinoline. The electronic effect of the additional electron-withdrawing ring makes the excited-state both less basic and more acidic than the parent and adds to the class of high-acidity excited-state proton donors in photochemistry and photobiology.