Fig. 1
CQGREEN excitation and emission spectra at varying pH. Solutions with varying pH ranging from 5 to 8, each containing 1 µM CQGREEN were prepared in triplicate and measured using a fluorimeter. Temperature was set to 37 °C during measurements. a Excitation spectra with fixed emission at 540 ± 4.5 nm. b Emission spectra with fixed excitation at 488 ± 4.5 nm