Highly Fluorescent Peri-functionalized Perylenemonoimide Derivatives with Tunable Optical Properties for Selective Sensing of Electron-rich Aromatic Amines

A series of peri-functionalized perylenemonoimide dyes containing an electron donating aromatic and polyaromatic group via Suzuki-coupling reaction has been synthesized. Photophysical properties of the synthesized dyes are extensively investigated using various spectroscopic techniques. Introduction of substituent's at peri-position shows a pronounced effect on emission properties. Electrochemical measurements suggest that the peri-functionalization of perylenemonoimide dyes make reduction much more facile compared to unsubstituted dyes. Thereafter, an efficient and selective fluorescence quenching strategy via photo-induced electron transfer process from electron-rich aromatic amines to the synthesized dyes has been investigated.