Characterization of a highly Al³⁺‐selective fluorescence probe based on naphthalimide‐Schiff base and its application to practical water samples

Abstract

A new fluorescent Al 3+ -probe, N-allyl-4-[3,3′-((2-aminoethyl)

A selective fluorescence probe for copper(II) ion in aqueous solution based on a 1,8-naphthalimide Schiff base derivative

“…Nowadays, there is still an intense demand for Cu 2+ fluorescent probes, especially those that can function in actual water samples. Derivatives of 1,8-naphthalimide are widely employed as fluorophores of choice due to their advantageous features of excellent photophysical fluorescent properties, strong absorption bands in the visible region, and large Stokes shifts, which allow this method to overshadow the merits of other conventional analytical methods [40][41][42][43][44][45][46][47][48][49]. Herein, we describe the synthesis of a new fluorescent probe HL for Cu 2+ detection that satisfies the prerequisite for the proposition of an efficient fluorescent probe.…”

A Highly Selective Perylenediimide-Based Chemosensor: “Naked-Eye” Colorimetric and Fluorescent Turn-On Recognition for Al3+

“…The K for Al 3+ was calculated to be 7.75 × 10 4 M −1 in the DMF solution, as increased from the fluorescence titration curves of probe PCN with Al 3+ ( Figure 5B ). The comparison of probe PCN with other Al 3+ chemical sensors based on Schiff's base was summarized in Table 1 with different sensing mechanisms (Gan et al, 2017 ; Roy et al, 2017 ; Tajbakhsh et al, 2017 ; Shen et al, 2018 ; Wang et al, 2018 ; Zhang et al, 2018 ; Fu et al, 2019 ). Compared with other sensors, the advantage of probe PCN was its lower detection limit, but its insolubility in water was its shortcoming, which might limit its application in biological and environmental chemistry to some extent.…”

Al(iii)-responsive “off–on” chemosensor based on rhodamine derivative and its application in cell imaging

“…The performance comparison of P and others reported chemosensors are listed in Table S1 (ESI †). It is can be seen from Table S1 † that most uorescent chemosensors present good selectivity and reversibility for Al 3+ , 17,18,[21][22][23][24]26 high uorescence quantum yield, [21][22][23]26 even down to 0.001 mM LOD, 18 and satisfactory qualitative analysis of cell imaging, 17,22,26 high binding constants at the level of 10 4 M À1 , [21][22][23]26 but some of them have more or less disadvantages, such as big background uorescence, 21,23,25 and unsuitable for cell imaging, 18,21,[23][24][25] irreversibility, 25 pure organic solvent. 18,21,25 Our newly developed chemosensor P based on rhodamine spirolactame derivative presents a number of attractive analytical features such as excellent detection limit, high association constant, good selectivity, high uorescence quantum yield, good reproducibility, and wide qualitative and quantitative analysis of ultratrace level Al 3+ in living cells.…”