Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 16079-88-2, Name is 1-Bromo-3-chloro-5,5-dimethylimidazolidine-2,4-dione, SMILES is O=C1N(Cl)C(C(C)(C)N1Br)=O, in an article , author is Zhou, Linlei, once mentioned of 16079-88-2, COA of Formula: C5H6BrClN2O2.
Effect of imidazole derivatives in triphenylamine-based organic dyes for dye-sensitized solar cells
In order to study the influence of imidazole derivatives in triphenylamine-based organic dyes, two different imidazole derivatives are introduced into the phenyl ring of the triphenylamine core, coded as TPA-B5 and TPA-B6, respectively. The photophysical and electrochemical properties of the dyes are investigated by UV-vis spectroscopy and cyclic voltammetry. TPA-B5 increases the molar extinction coefficients and lambda(max) because of the extension of the pi-conjugation structure of the dye and non-planar structure of imidazole derivative. However, TPA-B6 does not increase the molar extinction coefficients and lambda(max) compared with a simple triphenylamine derived dye (TPA-1), which may be due to the planar structure of imidazole derivative and benzene ring. The structure of TPA-B6 is in favor of the formation of dye aggregates on the semiconductor surface and the recombination of conduction band electrons with triiodide in the electrolyte. Overall conversion efficiencies of 3.13% and 1.21% under full sunlight (AM 1.5G, 100 mW cm(-2)) irradiation are obtained for DSSCs based on the two new dyes, under the same conditions, the dye TPA-1 and ditetrabutylammonium cis-bis(isothiocyanato) bis(2,2′-bipyridyl-4,4′-dicarboxylato) ruthenium(II) (N719) give overall conversion efficiencies of 2.23% and 5.38%, respectively. Although the overall conversion efficiencies of these dyes are not very high, the results will still afford significant value for future development of efficient D-pi-A sensitizers. (C) 2013 Elsevier B.V. All rights reserved.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 16079-88-2, you can contact me at any time and look forward to more communication. COA of Formula: C5H6BrClN2O2.