Colorimetric and ratiometric fluorescent chemosensor with a large red-shift in emission: Cu(II)-only sensing by deprotonation of secondary amines as receptor conjugated to naphthalimide fluorophore.
نویسندگان
چکیده
[reaction: see text] A new fluorescent probe N-butyl-4,5-di[2-(phenylamino)ethylamino]-1,8-naphthalimide 1 senses only Cu(II) among heavy and transition metal (HTM) ions by means of a colorimetric (primrose yellow to pink) method with a large red-shift in emission (green to red) attributed to the deprotonation of the secondary amines as a receptor conjugated to the naphthalimide fluorophore.
منابع مشابه
A red-shift colorimetric and fluorescent sensor for Cu2+ in aqueous solution: unsymmetrical 4,5-diaminonaphthalimide with N-H deprotonation induced by metal ions.
4,5-Diamino-1,8-naphthalimide (DNP)-based chemosensor was designed and synthesized. Probe specifically recognized Cu(2+) ions in neutral aqueous solution. The capture of Cu(2+) by the receptor resulted in deprotonation of the secondary amine conjugated to the 1,8-naphthalimide chromophore, so that the electron-donation ability of the "N" atom would be greatly enhanced; thus probe showed a 50 nm...
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ورودعنوان ژورنال:
- Organic letters
دوره 7 14 شماره
صفحات -
تاریخ انتشار 2005