Solvent polarity and pH effects on the spectroscopic properties of neutral red: application to lysosomal microenvironment probing in living cells.
Authors:Sousa C, Sá e Melo T, Gèze M, Gaullier JM, Mazière JC, Santus R
Journal:Photochem Photobiol
PubMed ID:8628751
'Neutral red is a lysosomal probe and a biological pH indicator. In aqueous solutions, the protonated (NRH) and neutral (NR) forms of monomeric neutral red exhibit distinct absorption maxima (535 and 450 nm, respectively) but have the same fluorescence with a maximum at 637 nm and a quantum yield of ... More