A chemosensor to recognize N-acyl homoserine lactone in bacterial biofilm

Rare Crystal Structure of Open Spirolactam Ring along with the Closed-Ring Form of a Rhodamine Derivative: Sensing of Cu2+ Ions from Spinach

“…31 The probe QRA has a detection limit of 2.2 μM for Cu 2+ ion (Figure S11). 32 2.4. pH Titration. It is very important to maintain the pH of the medium while working with rhodamine derivatives.…”

“…The probe QRA was synthesized by the reaction between 8-hydroxyquinoline and a 2-bromoacetamide substituent of rhodamine B ( 2 ) following a previously published report from our lab (detailed synthesis of compound 2 from rhodamine B has been described in the Supporting Information). 32 To a solution of anhydrous K 2 CO 3 (0.57 g, 4 mmol) in dry acetone was added 8-hydroxyquinoline (0.3 g, 2 mmol). The mixture was stirred for 0.5 h, followed by addition of compound 2 (1.25 g, 2 mmol) to the solution and subsequent refluxing for 24 h (Figure 5).…”

A handy and accessible tool for identification of Sn(II) in toothpaste

“…Binding interactions determine 1:1 stoichiometric ratio of CNP and Sn 2+ (Figure S5 , ESI†) with a high association constant of 0.35 × 10 6 M -1 from absorption spectra 30 , 31 (Figure S6 , ESI†). The detection limit of CNP for Sn 2+ has been evaluated 0.85 nM (Figure S7 , ESI†).…”

Consumption of H2S from Our Daily Diet: Determination by a Simple Chemosensing Method

“…The standard deviation for the fluorescence intensity was determined from the measurements of the emission intensity of four individual receptors without H 2 S 10 times. The evaluation was done by following the equation 67 where K = 2 or 3 (here, we took 3), SD is the standard deviation of the blank receptor solution, and S is the slope of the calibration curve.…”