An amino-decorated dual-functional metal–organic framework for highly selective sensing of Cr(iii) and Cr(vi) ions and detection of nitroaromatic explosives

Abstract

A 3D NH2–Zn-MOF has been successfully constructed via a hydrothermal reaction. It exhibits high selectivity and sensitivity towards Cr(iii), Cr(vi) ions and nitroaromatic compounds.

A highly selective multifunctional Zn‐coordination polymer sensor for detection of Cr (III), Cr (VI) ion, and TNP molecule

“…In a word, there are uncoordinated O atoms of the carboxylates in compound 1 , which can chelate Cr 3+ ion to improve the rigidity of the structure of compound 1 . The bigger conjugate plane and stronger rigidity of compound 1 make the structure more stable, which results in higher luminescent efficiency . Consequently, the increase of fluorescence and the blue shift of emission peak for compound 1 in the presence of Cr 3+ ion may be due to the coordination bonding of Cr 3+ with the O atoms of tbda 2− ligand.…”

Water‐Stable Coordination Polymers as Dual Fluorescent Sensors for Highly Oxidizing Anions Cr2O72− and MnO4−

“…Cr 2 O 7 2− is a well‐known strong oxidant which has been widely used in various industrial processes including electroplating, paint, leather tanning and pesticides . However, it is not only harmful to the environment, but also poses great threat to living organism, especially for human health . Cr 2 O 7 2− has been proven to be carcinogenic and it will cause a variety of side effect or diseases such as allergic reactions, skin allergy and ulcers, renal failure, lung cancer and even gene mutation once long‐term exposure to Cr 2 O 7 2− .…”

Two zinc(ii) coordination polymers based on flexible co-ligands featuring assembly imparted sensing abilities for Cr2O72− and o-NP

“…5b and 6c).The uorescent quenching efficiency was then quantitatively evaluated by the Stern-Volmer equation, I 0 /I ¼ K sv [M] + 1, where I 0 and I are the maximum luminescent intensities before and aer the addition of the probe, [M] is the molar concentration of probe solution, and K sv is the quenching constant (M À1 ). [43][44][45][46][47] As shown in Fig. 6b indicating the high sensitivity of complexes 1-2 for sensing Cr 2 O 7…”