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The sensing behaviour toward metal cations and biothiols of two 2,4,5-triarylimidazole probes (3a and 3b) is tested in acetonitrile and in acetonitrile-water. In acetonitrile the two probes present charge-transfer absorption bands in the 320-350 nm interval. Among all cations tested only Cu(11) is able to induce bathochromic shifts of the absorption band in the two probes, which is reflected in marked colour changes. Colour modulations are ascribed to the formation of 1:1 Cu(II)-probe complexes in which the cation interacts with the imidazole acceptor heterocycle. Besides, the two probes present intense emission bands (at 404 and 437 nm for 3a and 3b respectively) in acetonitrile that are quenched selectively by Cu(11). Probe 3a is soluble in acetonitrile-water 1:1 (v/v) and Cu(11) also induces bathochromic shifts of the absorption bands. Moreover, the emission bands of probe 3a in this mixed aqueous solutions is quenched in the presence of Cu(II). The potential use of the 1:1 complex formed between 3a and Cu (II) for the chromo-fluorogenic detection of biothiols (GSH, Cys and Hcy) in aqueous environments is also tested. At this respect, addition of GSH, Cys and Hcy to acetonitrile-water 1:1 v/v solutions of 3a-Cu(11) complex induces a hypsochromic shift of the visible band (reflected in a bleaching of the solutions) with a marked emission increase at 470 nm. ; We thank the Spanish Government (MAT2015-64139-C4-1-R) and Generalitat Valenciana (PROMETEO 2018/024). H.E.O. thanks Generalitat Valenciana for his Grisolia fellowship. Thanks are also due to Fundação para a Ciência e Tecnologia (Portugal) for financial support to the Portuguese NMR network (PTNMR, Bruker Avance III 400-Univ. Minho), FCT and FEDER (European Fund for Regional Development)-COMPETEQREN-EU for financial support to the research centre CQ/UM [Ref. UID/QUI/00686/2013 and UID/QUI/0686/2016], and a PhD grant to R.C.M. Ferreira ...

"Literature": 2 p. preceding p. 7. ; Mode of access: Internet.

"Some books on Ohio history": p. 9-10. ; Mode of access: Internet.

Vendeur : Sotheby's. Vendeur ; [Vente. Art. 1912-02-21 - 02-22. Londres] ; [Collection. Numismatique. Alderman Gillett. 1912] ; Appartient à l'ensemble documentaire : VenteMMA

"2016 International Conference on Humanity and Social Science (ICHSS2016) was successfully held in Xiamen, China, on April 22nd – 24th. The ICHSS2016 received over more than 198 submissions, and after careful peer review process, only 68 are included in this proceedings, covering management, education, economy and finance, culture, social science and sports. The program of ICHSS2016 consisted of keynote presentation, invited sessions and technical workshops. The conference provides an opportunity for researchers from all over the regions to come together to discuss issues and compare research outcomes in education and humanity, and exchange ideas to move in the right directions should be the focus of attention."--Publisher's website.

Enrico Ferri was a prominent figure in the early development of the field of criminology. The school of thought that he developed, which came to be known as positivism, sought to identify and address the social, economic and environmental factors that contributed to the emergence of criminal and antisocial behavior in some people. The three lectures in this volume bring together many of Ferri's most influential ideas and theories