A New Highly Selective, Ratiometric and Colorimetric Fluorescence Sensor for Cu2+ with a Remarkable Red Shift in Absorption and Emission Spectra Based on Internal Charge Transfer

作者：Goswami Shyamaprosad^*; Sen Debabrata; Das Nirmal Kumar

来源：Organic Letters, 2010, 12(4): 856-859.

DOI：10.1021/ol9029066

A new 1,8-diaminonaphthalene based ratiometric and highly selective colorimetric "off-on" type of fluorescent probe, receptor 2 has been designed and synthesized that senses only Cu2+ among the other heavy and transition metal ions examined on the basis of Internal charge transfer (ICT). The visual sensitivity of the receptor 2 Is remarkable, showing dual color changes from colorless (receptor) to purple followed by blue and a large red shift in emission upon Cu2+ complexation.

• 出版日期2010-2-19