Developing a unique metal-organic framework-{[Cd(abtz)2(NCS)]·(ClO4)}n (abtz = 1-(4-aminobenzyl)-1,2,4-triazole) as fluorescent probe for highly selective and sensitive detection of ascorbic acid in biological liquid

A Two‐Dimensional Metal–Organic Framework as a Fluorescent Probe for Ascorbic Acid Sensing

“…The K sv value was calculated to be 5.64 × 10 4 ; therefore, the value of k q is 3.43 × 10 13 m –1 s –1 . This value is more than two orders of magnitude higher than the diffusion‐controlled limit under these conditions; therefore, diffusional quenching can be excluded ,. [18a] In summary, the quenching mechanism of ZJU‐137 for AA sensing should be static quenching.…”

“…AgClO 4 and 1‐(4‐aminobenzyl)‐1,2,4‐triazole (abtz) were employed to synthesize the 2D layered framework {[Ag 2 (µ 2 ‐abtz)(µ 3 ‐abtz)(ClO 4 )][ClO 4 ]} n , which has a luminescent response to AA in aqueous solutions . Guo et al developed a cadmium MOF (MOF‐Cd‐abtz) for AA sensing with a detection limit of 75 nM . We demonstrated the first Ce‐MOF (ZJU‐136‐Ce) for the turn‐on sensing of AA.…”

Highly sensitive and selective detect of p‐arsanilic acid with a new water‐stable europium metal–organic framework

“…The fluorescent decay curves of the BUC‐69 suspensions with and without p ‐ASA (10 −4 M) were investigated. As shown in Figure S14, the similar excited‐state lifetime of two different analysts indicated that the quenching process of p ‐ASA was ascribed to static quenching mechanism …”

“…It is well‐known that the mechanisms for the fluorescence quenching behavior of MOFs induced by analyte through the following three interactions: long range, short range, and complex/collision‐driven . Radiative energy transfer is long range (and range‐independent) interactions, in which the emission energy from the probe material and excitation energy can be competitive absorption by analyte species (photo‐competitive effect), resulting apparent emission quenching of the fluorescent materials . Förster resonance energy transfer (FRET, short range interactions), and Dexter electron exchange (DEE, overlap/collision interactions) and Photoinduced electron transfer (PET, overlap/collision interactions) are also widely used in exploring the quenching behavior of fluorescent MOFs …”

Hydrothermal Preparation of a Series of Luminescent Cadmium(II) and Zinc(II) Coordination Complexes and Enhanced Real‐time Photo‐luminescent Sensing for Benzaldehyde

“…The mechanism of the in‐situ hydrothermal synthesis of H 2 L′ is also briefly discussed in the Supporting Information (Scheme S2). Such luminescent coordination complexes excited our interest in preparing and exploring its potential performance . Photo‐luminescent sensing experiments revealed that all the four coordination compounds have a real‐time fluorescence quenching effect for benzaldehyde.…”