To address the lack of systematic studies on heavy metal fluorescent probes in typical buffer solutions,this study developed a Fe^(3+)and Cu^(2+)fluorescent probe,DHU‑NP‑4,based on a naphthalimide fluorophore.Comparat...To address the lack of systematic studies on heavy metal fluorescent probes in typical buffer solutions,this study developed a Fe^(3+)and Cu^(2+)fluorescent probe,DHU‑NP‑4,based on a naphthalimide fluorophore.Comparative analysis of the probe's performance in various buffer systems revealed that buffers with high organic content are unsuitable for evaluating such probes.Furthermore,the pH of the solvent system was found to significantly influence the probe's behavior.Under highly acidic conditions(pH≤2),DHU‑NP‑4 exhibited exceptional specificity for Fe^(3+),while in alkaline conditions,it demonstrated high specificity for Cu^(2+).Leveraging these properties,the probe enabled the quantitative detection of Fe^(3+)and Cu^(2+)in solution.展开更多
A new 3,4-disubstituted-l,8-naphthalimide derivative H1 was designed and synthesized as a selective fluorescent probe for Cu2＋ over miscellaneous metM ions in aqueous media. Upon mixing with Cup-＋ in CH3OH：H2O （1...A new 3,4-disubstituted-l,8-naphthalimide derivative H1 was designed and synthesized as a selective fluorescent probe for Cu2＋ over miscellaneous metM ions in aqueous media. Upon mixing with Cup-＋ in CH3OH：H2O （1：1, volume ratio）, the increase of fluorescence intensity and a bathochromic shift of absorbance of H1 could be observed with a notable color response （changing from yellow to pink）, htrthermore, Cu2＋ coordinates to the probe H1 and a 1：1 metal-ligand complex was formed.展开更多
文摘To address the lack of systematic studies on heavy metal fluorescent probes in typical buffer solutions,this study developed a Fe^(3+)and Cu^(2+)fluorescent probe,DHU‑NP‑4,based on a naphthalimide fluorophore.Comparative analysis of the probe's performance in various buffer systems revealed that buffers with high organic content are unsuitable for evaluating such probes.Furthermore,the pH of the solvent system was found to significantly influence the probe's behavior.Under highly acidic conditions(pH≤2),DHU‑NP‑4 exhibited exceptional specificity for Fe^(3+),while in alkaline conditions,it demonstrated high specificity for Cu^(2+).Leveraging these properties,the probe enabled the quantitative detection of Fe^(3+)and Cu^(2+)in solution.
文摘A new 3,4-disubstituted-l,8-naphthalimide derivative H1 was designed and synthesized as a selective fluorescent probe for Cu2＋ over miscellaneous metM ions in aqueous media. Upon mixing with Cup-＋ in CH3OH：H2O （1：1, volume ratio）, the increase of fluorescence intensity and a bathochromic shift of absorbance of H1 could be observed with a notable color response （changing from yellow to pink）, htrthermore, Cu2＋ coordinates to the probe H1 and a 1：1 metal-ligand complex was formed.
