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Lavinia Fontana＇s Cleopatra the Alchemist

Journal of Literature and Art Studies 2018年第8期8卷 1159-1180页

作者： Liana de Girolami Cheney siele Universidad de Comfia Spain

The purpose of this essay is to identify and analyze one of Lavinia Fontana＇s mysterious paintings, traditionally entitled Cleopatra but here considered to be an inventive portrayal of an ancient scientist, Cleopatra the Alchemist （ca. third century BCE）. There are four parts to this study. The first is an iconographical analysis of the painting by Lavinia Fontana＇s Cleopatra the Alchemist （1605） at the Galleria Spada in Rome. The second section deals with the origin of the Egyptian Cleopatra the Alchemist as an Egyptian scientist and of her inventions, which include the alembic and the ouroboros motiE The third section consists of an emblematic comparison between the imagery in the painting and alchemical references. The last brief section considers problematic copies of the painting

关键词： alchemy art symbolism serpent ouroboros famous women alembic Lavinia Fontana Egyptianmyflaology Plato's Timaeus artistic forgery

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Electrochemical synthesis and the functionalization of few layer graphene in ionic liquid and redox ionic liquid

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Science China Chemistry 2018年第5期61卷 598-603页

作者： Maria Gómez-Mingot Amarnath Chellachamy Anbalagan Hyacinthe Randriamahazaka Jalal Ghilane Universite Paris Diderot Sorbonne Paris Cite ITODYS UMR 7086 CNRS SIELE group Paris 75013 France Laboratoire de Chimie des Processus Biologiques UMR 8229 CNRS University Pierre et Marie Curie College de France Paris 75231 France Chemistry Division Bhabha Atomic Research Centre Trombay Mumbai 400085 India

Electrochemical reductive exfoliation of graphite to few layered graphene(FLG) in presence of 1-ethyl-2,3-dimethyl imidazolium bis(trifluoromethylsulfonyl) imide ionic liquid and redox ionic liquid based ferrocene has been investigated. Thus, by applying a mild negative potential(-2.7 V vs. Fc/Fc^+) to carbon electrode in ionic liquid graphene flakes could be generated. The generated materials have been characterized by X-ray photoelectron spectroscopy, Raman spectroscopy, high resolution transmission electron microscopy and atomic force microscopy. XPS and Raman analysis show that the electrochemical reductive exfoliation provides the formation of FLG. The thickness of the resulting FLG was found to be ranged between 4 and1 nm. HR-TEM images reveal the formation of few graphene layers and in some cases single graphene layer was ***, this electrochemical route conduces to the formation of ionic liquid functionalized FLG. Finally, the reductive exfoliation was further investigated in the presence of redox ionic liquid. XPS and electrochemical measurements confirm the presence of ferrocene.

关键词： electrochemistry reductive exfoliation ionic liquid graphene

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