Photophysical and density functional studies on the interaction of a new nitrobenzoxadiazole derivative with anions

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• 作者：Sudhir Kumar Das ; Smruti Snigdha Misra ; Prabhat Kumar Sahu ; A. Nijamudheen ; Vaisakh Mohan ; Moloy Sarkar
• 刊名：Chemical Physics Letters
• 出版年：2012
• 出版时间：12 September, 2012
• 年：2012
• 卷：546
• 期：Complete
• 页码：90-95
• 全文大小：698 K

文摘

Photophysical and density functional studies on a nitrobenzoxadiazole-based system, N-butyl-7-nitrobenzo[c] [1,2,5]oxadiazol-4-amine (NBDH), have been investigated with a view to obtain molecular level understanding of the mechanism of interaction of inorganic anions with NBDH. The emission spectrum of the system exhibits large quenching of fluorescence on addition of F^?. No appreciable changes in the absorption and fluorescence behavior of the present systems have been found in the presence of other anions. NMR investigation and theoretical calculations reveal that abstraction of acidic proton (N-H) of NBDH by F^? is primarily responsible for fluoride ion selective signaling behavior of the present system.