Synthesis, crystal structures and solid-state optical properties of two Mannich derivatives of 2’,7’-dichlorofluorescein
作者:Mihai RĂDUCĂ、Augustin M. MĂDĂLAN
DOI:10.33224/rrch.2020.65.6.13
日期:——
Synthesis, crystal structures and solid-state optical properties of two Mannich derivatives of 2',7'-dichlorofluorescein are reported herein. The first derivative (MBFluo1), resulted by Mannich reaction from 2',7'-dichlorofluorescein, paraformaldehyde and N-methylpiperazine, crystallizes in a zwitterionic form, while the second derivative (MBFluo2) was obtained in the non-charged spironolactone form from 2',7'-dichlorofluorescein, paraformaldehyde and di-tert-buthyliminodiacetate. The emission spectra of MBFluo2 present two maxima at 420 and 550 nm.