Synthesis and Characterization of Tungstophosphoric Heteropolyacid (H5PW11TiO40) Containing Titanium

Hu, Caihong; Yun-cheng, Xie; Xu, Qian; Meng, Jianghong

doi:10.14233/ajchem.2014.17165

Cited by 1 publication

(1 citation statement)

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“…On the condition of far from equilibrium, chemical oscillations may occur as a result of the nonlinear kinetic steps between the reactions which take place in some simple chemical systems 1 . Such chemical systems include Belousov-Zhabotinsky (BZ) [2][3][4] Bray-Liebhafsky (BL) 5 , Bray-Rauscher (BR) [6][7][8][9] and chlorine dioxide-iodine-malonic acid system 10 . Because of the simplicity that such chemical systems possess, they could be regarded as ideal model for mimicking some biological oscillations that could be observed, such as Ca 2+ oscillations in cells.…”

Section: Introductionmentioning

confidence: 99%

Photochemical Behaviour in Macrocyclic Copper Complex-Bromate-Malic Acid System

H¹,

Zhang²,

Yang³

et al. 2014

Asian J. Chem.

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The photochemical behaviour in the macrocyclic copper complex-bromate-malic acid system was investigated in this paper. Macrocyclic copper complex [CuL](ClO4)2, where ligand L is 5,7,7,12,14,14-hexemethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene, is an enzymelike complex. Experimental results indicated that the chemical oscillations exhibited ultrasensitive response to illumination, where the amplitude of oscillation were significantly changed but the frequency remained unaffected by ultraviolet light working at 245 nm with an intensity of more than 450 Lux. Increase in light intensity could enhance inhibition on the oscillations. At a constant illumination, the influences of light were examined with the variation of the concentration of bromate, malic acid, and macrocyclic complex. It was found that the ultraviolet light has affectedly influence on the oscillation trajectories of potentials of platinum electrode vs. those of bromide selective electrode.

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