Pandey, Rampal ; Yadav, Mahendra ; Shahid, Mohammad ; Misra, Arvind ; Pandey, Daya Shankar (2012) Design and synthesis of fluorescent 6-aryl[1,2-c]quinazolines serving as selective and sensitive 'on-off' chemosensor for Hg2+ in aqueous media Tetrahedron Letters, 53 (28). pp. 3550-3555. ISSN 0040-4039
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.tetlet.2012.04.128
Abstract
Three fluorescent quinazolines thiophen-2-yl-5,6-dihydrobenzo-[4,5]imidazo[1,2-c]quinazoline (1), pyridin-3-yl-5,6-dihydrobenzo-[4,5]imidazo-[1,2-c]quinazoline (2) and phenyl-5,5′,6,6′-dihydrobenzo-[4,4′,5,5′]imidazo-[1.1′,2-c,2′-c]quinazoline (3) have been synthesized. Structures of 1 and 3 have been authenticated crystallographically. Quinazolines 1–3 exhibit highly selective ‘on-off’ switching for Hg2+ ions. The fluorescence intensity displayed a linear relationship with respect to Hg2+ concentration (0.1–1.0 μM; R2 = 0.99) with detection limit of 2.0 × 10-7 M.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Synthesis; Quinazolines; Crystal Structure; UV–vis; Fluorescence; Mercury Selective; Quenching |
| ID Code: | 104571 |
| Deposited On: | 21 Apr 2017 06:10 |
| Last Modified: | 21 Apr 2017 06:10 |
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