The fluorescent probe based on methyltetrahydroxanthylium skeleton for the detection of hydrazine

Fluorophore branching boosted photo-induced energy transfer in UiO-66 for ultrasensitive and instant hydrazine sensing

“…As a result, the LOD was calculated and found to be as low as 27.17 nM (defined as LOD = 3 σ / k , where k is the slope of the linear part of the calibration curve and σ is the standard deviation of noise with a value of 90.37 via the blank test of UiO-66-Flu). This LOD value is very competitive compared to the other previously reported strategies 45–51 (Table S1†) and is much lower than the maximum permissible concentration (a risk threshold of 0.01 mg L −1 or 312 nM) recommended by the World Health Organization (WHO). 52…”

“…As a result, the LOD was calculated and found to be as low as 27.17 nM (dened as LOD = 3s/k, where k is the slope of the linear part of the calibration curve and s is the standard deviation of noise with a value of 90.37 via the blank test of UiO-66-Flu). This LOD value is very competitive compared to the other previously reported strategies [45][46][47][48][49][50][51] (Table S1 †) and is much lower than the maximum permissible concentration (a risk threshold of 0.01 mg L −1 or 312 nM) recommended by the World Health Organization (WHO). 52 Furthermore, real-time spectroscopic measurements showed that the designed UiO-66-Flu is capable of detecting hydrazine with different concentrations in less than 4 s when taking 70% of the maximum stable response as a judging standard (Fig.…”

A Near InfraRed Emissive Chemosensor for Zn2+ and Phosphate Derivatives Based on a Di-(2-picolyl)amine-styrylflavylium Push-Pull Fluorophore

“…Furthermore, extension of the π-conjugated benzopyrilium core is readily achieved with the appropriate precursors to produce styrylflavylium derivatives [ 28 , 29 ] ( Figure 1 , blue). Indeed, these styrylflavylium dyes have been recently reported as red or NIR fluorescent probes for hydrogen sulfide [ 30 ], sulfur dioxide [ 31 ], hydrazine [ 32 ] and sensing DNA replication [ 33 ]. With this in mind, we designed a novel styrylflavylium chemosensor bearing a DPA receptor, and assessed its potential as a sensor for cations and anions.…”

Sensitive hydrazine detection and quantification with a fluorescent benzothiadiazole sensor: selective lipid droplets andin vivoimaging

“…In other words, these molecules contain a reactive site and will change their structure when treated with hydrazine. 26–35 The result is generally the formation of a more emissive derivative capable of indicating the presence of this specific analyte ( i.e. , N 2 H 4 ), or a shift in emission wavelength ( e.g.…”

“…In other words, these molecules contain a reactive site and will change their structure when treated with hydrazine. [26][27][28][29][30][31][32][33][34][35] The result is generally the formation of a more emissive derivative capable of indicating the presence of this specific analyte (i.e., N 2 H 4 ), or a shift in emission wavelength (e.g., from red to green) or even fluorescence quenching (light-off probes). [36][37][38] As one can see by analyzing the developed structures shown in Fig.…”