Stable bifunctional Zn^II-based sensor toward acetylacetone and l-histidine via a fluorescence red shift and turn-on effect

Abstract

A new coordination polymer [Zn(bbip)(NH2-BDC)]n (JXUST-15, bbip = 2,6-bis(benzimidazol-1-yl)pyridine and NH2-H2BDC = 2-aminoterephthalic acid) has been synthesized by mixed ligand strategy. The structure analysis shows that JXUST-15 takes a two-dimensional...

Ultraversatile Fluorescent Sensors Based on Two CoII/NiII Coordination Polymers for Identifying Various Antibiotics via the Turn-On/Off Effect and Detecting pH

“…The corresponding K SV values of CP 2 were 4.10 × 10 4 M –1 ( R 2 = 0.991) for ERY and 8.10 × 10 4 M –1 ( R 2 = 0.989) for OXC. The limits of detection (LODs) (3σ/ k , where σ is the standard deviation and k is the slope of the analyte concentration vs luminescence intensity at low concentrations) of CP 1 toward ERY and OXC were 1.88 × 10 –6 and 1.39 × 10 –6 M, respectively. The LODs of CP 2 toward ERY and OXC were 6.79 × 10 –7 and 3.42 × 10 –7 M, respectively.…”

“…Interestingly, CPs 1 and 2 sense these three antibiotics (ERY, OXC, and FTD) on the basis of different effects. ERY and 59 where σ is the standard deviation and k is the slope of the analyte concentration vs luminescence intensity at low concentrations) of CP 1 toward ERY and OXC were 1.88 × 10 −6 and 1.39 × 10 −6 M, respectively. The LODs of CP 2 toward ERY and OXC were 6.79 × 10 −7 and 3.42 × 10 −7 M, respectively.…”

A highly stable and efficient benzothiadiazole-based fluorescence sensor for salicylaldehyde in aqueous solution

“…S4a, ESI †). 43 Moreover, the average lifetime of JXUST-27 is 5.7 μs, which was calculated using the formula…”

A water stable and highly fluorescent Zn(ii) based metal–organic framework for fast detection of Hg2+, CrVI, and antibiotics

“…41–43 To date, a large number of LMOFs as fluorescence sensing materials for metal ions, anions, and small organic molecules have been reported. 44–56…”

“…[41][42][43] To date, a large number of LMOFs as fluorescence sensing materials for metal ions, anions, and small organic molecules have been reported. [44][45][46][47][48][49][50][51][52][53][54][55][56] In general, the selection of central metal ions and organic ligands is critical for the construction of multifunctional LMOF materials. Among them, metal Zn 2+ ions with a d 10 electronic configuration are usually chosen to construct LMOFs with good fluorescence performance.…”