Abstract
N-(2,7-Dichlorofluorescein)lactam-N′-phenylthiourea (L) was developed as a colorimetric and fluorescent chemosensor for anions such as AcO-, F- and H2 PO4-. The addition of AcO- anion to the solution of L in CH3CN results in a distinct fluorescence "ON" observation as well as color change (from colorless to pink). The H-bonding interaction between AcO- anion and thiourea moiety of L induced the ring-opening of the spirolactam of fluorescein moiety, which gave rise to the dual chromo- and fluorogenic changes.
Original language | English |
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Pages (from-to) | 3159-3162 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 48 |
Issue number | 18 |
DOIs | |
Publication status | Published - 2007 Apr 30 |
Externally published | Yes |
ASJC Scopus subject areas
- Biochemistry
- Drug Discovery
- Organic Chemistry