fluorescence quenching / Stern-Volmer nitrobenzene sensing in water
aqueous suspension of ground compound 1 · Powder
2 mg ground 1 in 2 mL water; ultrasonicated 0.5 h; room temperature; excitation 326 nm; nitrobenzene added at varying concentrations
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| nitrobenzene-selective fluorescence quenching | fluorescence intensity of the aqueous solution containing nitrobenzene was almost quenched, while other organics showed negligible changes | — | — | Text Qualitative | p007 / 7864 · Luminescence Sensing Properties · Figures 6b and S11 |
| response to other nitroaromatic compounds | 1,4-dinitrobenzene, 2-nitro-m-xylene, and 2,4-dinitrotoluene caused negligible fluorescence change | — | — | Text Qualitative | p008 / 7865 · Luminescence Sensing Properties · Figure S16 |
| nitrobenzene concentration range for linear fit | 4.89 x 10^-4 - 4.89 x 10^-2 M | — | — | Caption Range | p007 / 7864 · Figure 7 caption · Figure 7 |
| nitrobenzene detection limitMarked as a best value within this paper | 2.89 x 10^-4 M | — | — | Text Exact Reported | p008 / 7865 · Luminescence Sensing Properties · Figure 7b |
| Stern-Volmer quenching constant for nitrobenzeneMarked as a best value within this paper | 680.52 M^-1 | — | — | Text Exact Reported | p008 / 7865 · Luminescence Sensing Properties · Figure 7b |
| nitrobenzene Stern-Volmer linearity | R2 = 0.996 | — | — | Text Exact Reported | p007 / 7864 · Luminescence Sensing Properties · Figure 7b |
| pH tolerance for nitrobenzene sensing | pH 3-11; no obvious change in emission intensity for nitrobenzene-containing aqueous solutions | — | — | Text Range | p007 / 7864 · Luminescence Sensing Properties · Figure 6d |