02043nas a2200229   4500008004100000022001400041245010200055210006900157260000900226300001600235490000700251520124200258100002301500700003001523700002201553700002101575700001901596700002801615700002501643700001701668856012801685       2023                        eng d  a0020-166900aRobust zeolitic tetrazole framework for electrocatalytic dopamine detection with high selectivity0 aRobust zeolitic tetrazole framework for electrocatalytic dopamin  cNOV   a20236-202410 v623 a<p>
	A novel zeolitic tetrazolate framework (ZTF-8) has been synthesized by solvent-free heat-assisted (70 C-degrees) mechanochemical grinding of zinc acetate and 5-methyl tetrazole in the presence of NaOH powder. The structure of ZTF-8 adopts the zeolitic sodalite (SOD) topology with uncoordinated N-heteroatom sites and resembles the structure of the well-known zeolitic imidazole framework ZIF-8. ZTF-8 is exceptionally stable in 0.1 M aqueous acid and base solutions for 60 days at 25 C-degrees. The unique structure with uncoordinated N-heteroatom active sites and exceptional stability of ZTF-8 facilitated the electrocatalytic oxidation of dopamine to dopamine quinone at neutral pH. Without any postsynthetic modification, ZTF-8 is directly used for the facile electrochemical detection of dopamine over a wide range of concentrations (5-550 mu M) with a high sensitivity (2410.8 mu A mM-1 cm-2). It also demonstrated promising selectivity over other interferents of similar oxidation potential, such as ascorbic acid and uric acid. The DFT study revealed that the ZTF-8 framework has a higher binding energy (-145.07 kJ/mol) and stronger interaction with dopamine than its isostructural ZIF-8 structure (-130.42 kJ/mol).</p>
1 aSarfudeen, Shafeeq1 aSruthi, Vadakke, Purakkal1 aMaibam, Ashakiran1 aPanda, Premchand1 aJhariat, Pampa1 aSenthilkumar, Sellappan1 aBabaRao, Ravichandar1 aPanda, Tamas  uhttps://library.ncl.res.in/content/robust-zeolitic-tetrazole-framework-electrocatalytic-dopamine-detection-high-selectivity