Fluorescent and colorimetric detection of pH by a rhodamine-based probe

Three novel input logic gates supported by fluorescence studies: Organic nanoparticles (ONPs) as chemo-sensor for detection of Zn2+ and Al3+ in aqueous medium

“…The results show that pH strongly influences the fluorescent emission. This observation agrees with other published works [60,61]. In the acidic condition (pH = 1.0-5.0), the fluorescence intensity was very low (OFF mode), and it becomes ON mode (enhancement of the fluorescence) at basic condition (pH = 6-10).…”

Benzimidazo[2,1-a]benz[de]isoquinoline-7-one-12-carboxylic acid based fluorescent sensors for pH and Fe3+

“…S9). The plots of log [(I max À I)/ (I À I min )] as a function of the pH according Henderson-Hasselbalch type equation [29,30] (Eq. (3)), as shown in Fig.…”

One-pot synthesis of a new rhodamine-based dually-responsive pH sensor and its application to bioimaging

“…1 18,19,23,25 based on the fluorimetric titration data, where I is the observed fluorescence intensity at a fixed wavelength, I max and I min are the maximal and minimal fluorescence intensity, respectively. pH À pK a ¼ log½ðI max À IÞ=ðI À I min Þ 4.3.3.…”