A new acylhydrazine N'-(1,3 dimethylbutylene)-3-hydroxy-naphthohydrazide based fluorescent sensor for the detection of Ni2+

Novel Aggregation-Induced Emission Fluorescent Molecule for Platinum(IV) Ion-Selective Recognition and Imaging of Controlled Release in Cells

“…The ν­(CO) band of the amide group was shifted from 1679 to 1647 cm –1 , and the ν­(CN) vibration of imine was shifted from 1621 to 1619 cm –1 after the complexation reaction. The strong bands assigned to ν­(CO) amide and ν­(CN) imine stretching band were shifted to lower frequency, indicating the involvement of amide keto oxygen and imine nitrogen in the metal coordination. , Furthermore, hydrazides [R–CO–NH–NH 2 ] are well-known to chelate with a variety of transition metal ions with the terminal nitrogen and the carbonyl oxygen by forming a five-membered ring. , This has also been observed in the coordination of 7-(diethylamino)-2-oxo-2H-chromene-3-carbohydrazide (compound B in Scheme ) with PtCl 4 , as indicted by the comparation of the 1 H NMR spectra (in DMSO- d 6 ) of the sole compound B with compound B in the presence of PtCl 4 , as shown in Figure S17. The apparent singlet at 9.46 ppm was assigned to the proton attached to the amide nitrogen (Ha), and the signal at 4.63 ppm was assigned to the proton attached to terminal nitrogen (Hb) in compound B.…”

“…The strong bands assigned to ν(C�O) amide and ν(C�N) imine stretching band were shifted to lower frequency, indicating the involvement of amide keto oxygen and imine nitrogen in the metal coordination. 51,52 Furthermore, hydrazides [R−CO−NH−NH 2 ] are well-known to chelate with a variety of transition metal ions with the terminal nitrogen and the carbonyl oxygen by forming a fivemembered ring. 53,54 This has also been observed in the coordination of 7-(diethylamino)-2-oxo-2H-chromene-3-carbohydrazide (compound B in Scheme 1) with PtCl 4 , as indicted by the comparation of the 1 H NMR spectra (in DMSO-d 6 ) of the sole compound B with compound B in the presence of PtCl 4 , as shown in Figure S17.…”

Determination of dissolved nickel in natural waters using a rapid microplate fluorescence assay method

“…The greenness and the sustainability of the method were evaluated by the RGB12 model [48,49] and compared to similar methods for the detection of nickel in aqueous samples by spectrophotometry with an azocalix [4]arene [18], solid-phase spectrophotometry with o-CDAA [8], and fluorescence with BMH [16] or with murexide [21]. The RGB model allows the comparison of methods according to 12 rules divided into 3 components: the red component (principles R1-R4) for the evaluation of analytical performance and the green (principles G1-G4) and blue (principles B1-B4) components for the evaluation of the method's ecological and practical criteria respectively.…”

“…For the analytical aspects (red scores), the best scores are obtained by the proposed method and by the methods based on the use of azocalix [4]arene [18] or murexide [21] with red scores of 76.3%, 71.5% and 77.5% respectively. The scores of other methods are penalized either by a lower selectivity (criterion R1 scope of application, corresponding to acceptable molar ratio between Ni and interferents) [8,16], or by a low measurement range [16]. Methods using fluorescence measurement [this work, 16,21] or solid phase spectrophotometry (thus integrating a pre-concentration step on the solid phase) [8] have better detection limits than simple spectrophotometric methods [18] and are therefore capable of measuring concentrations equal to 30% of the parametric value (approximately 6 µg L -1 ).…”

“…We can cite for example Chowdhury et al [14] and Wang et al [15] who have respectively synthesized a Schiff base and an acridine based fluorescent chemosensors for selective nickel determination by chelation-enhanced fluorescence. In the same way, a hydrazide compound was synthetized by Liu et al [16] and was applied to direct nickel determination of nickel in river water samples.…”