Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 82(1), 340-344 (2011-08-16)
A novel fluoroionophore 1 based on 3,4-dimethylthieno[2,3-b]thiophene bearing two monoaza-15-crown-5 ethers at 3- and 4-positions was prepared. UV-vis and fluorescence responses of compound 1 upon the addition of alkali and alkaline earth metal cations were evaluated in acetonitrile solution. Receptor
Initial attempts to make [Ni(H2O)2(15-crown-5)](NO3)2, i.e. to insert the Ni2+ ion into the 15-crown-5 macrocycle, gave the mono- (two polymorphs) and dihydrate of a co-crystal of[Ni(H2O)6](NO3)2 and 15-crown-5 (1,4,7,10,13-pentaoxacyclopentadecane=15C5). Synthetic routes designed to restrict the water available to the Ni2+
The electron transfer properties of supramolecular complexes of 15-crown-5 (15C5) with protonated adrenaline (PAd(+)) at different electrodes using cyclic voltammetry (CV) have been investigated in the article. The experimental results show that 15C5 will affect the electron transfer properties of
The Journal of organic chemistry, 76(7), 2257-2260 (2011-03-09)
Acetylcholinesterase inhibitor (-)-homogalanthamine 3 was synthesized from μ opioid antagonist naltrexone (2) in 16% total yield. The synthesis features Grob fragmentation as a key reaction, which was especially accelerated in the presence of 15-crown-5.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 26(10), 1039-1045 (2010-10-19)
Two-dimensional real-time observation of potassium ion distributions was achieved using an ion imaging device based on charge-coupled device (CCD) and metal-oxide semiconductor technologies, and an ion selective membrane. The CCD potassium ion image sensor was equipped with an array of
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