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Carlos F. R. A. C. Lima
Researcher at Universidade Federal de Minas Gerais
Publications - 78
Citations - 1169
Carlos F. R. A. C. Lima is an academic researcher from Universidade Federal de Minas Gerais. The author has contributed to research in topics: Chordal graph & Bipartite graph. The author has an hindex of 15, co-authored 74 publications receiving 935 citations. Previous affiliations of Carlos F. R. A. C. Lima include Federal University of Rio de Janeiro & Federal University of Ceará.
Papers
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Journal ArticleDOI
Optical band gaps of organic semiconductor materials
José C. S. Costa,Ricardo J. S. Taveira,Carlos F. R. A. C. Lima,Carlos F. R. A. C. Lima,Adélio Mendes,Luís M. N. B. F. Santos +5 more
TL;DR: In this article, the electronic and optical properties of π-conjugated systems were evaluated by UV-Vis spectroscopy in CHCl3 solution for a large number of relevant πconjugation systems: tris-8-hydroxyquinolinatos (Alq3, Gaq3 and Inq3); oligoacenes (naphthalene, anthracene, tetracene and rubrene); oligothiophenes (α-2T, β-2t, α-3T,β-4T and α-
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High-accuracy vapor pressure data of the extended [CnC1im][Ntf2] ionic liquid series : trend changes and structural shifts
Marisa A.A. Rocha,Carlos F. R. A. C. Lima,Ligia R. Gomes,Bernd Schröder,João A. P. Coutinho,Isabel M. Marrucho,Isabel M. Marrucho,José M. S. S. Esperança,Luís Paulo N. Rebelo,Karina Shimizu,José N. Canongia Lopes,Luís M. N. B. F. Santos +11 more
TL;DR: The thermodynamic results reported in the present article constitute the first quantitative experimental evidence of the structural percolation phenomenon and make a significant contribution to better understanding of the relationship among cohesive energies, volatilities, and liquid structures of ionic liquids.
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Role of the Base and Control of Selectivity in the Suzuki–Miyaura Cross‐Coupling Reaction
Carlos F. R. A. C. Lima,Carlos F. R. A. C. Lima,Ana S. M. C. Rodrigues,Vera L. M. Silva,Artur M. S. Silva,Luís M. N. B. F. Santos +5 more
TL;DR: In this article, the Suzuki-Miyaura cross-coupling for the direct competition reaction between two boronic acids was evaluated under routine synthesis conditions, and the reaction selectivity was found to depend on the amount of the base used, with fewer bases favoring the reactivity of the boric acid with lower pKa (stronger acid).
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New Knudsen effusion apparatus with simultaneous gravimetric and quartz crystal microbalance mass loss detection
Luís M. N. B. F. Santos,Luís Spencer Lima,Carlos F. R. A. C. Lima,Fernão D. Magalhães,Manuel C. Torres,Bernd Schröder,Manuel A.V. Ribeiro da Silva +6 more
TL;DR: In this paper, a new Knudsen effusion apparatus is described, enabling simultaneous gravimetric and quartz crystal microbalance mass loss detection, which allows the measurement of vapour pressures of small sample mass (50 to 100)mg over a wide temperature range (350 to 650) K using very short effusion time intervals.
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Exploring the selectivity of the Suzuki–Miyaura cross-coupling reaction in the synthesis of arylnaphthalenes
TL;DR: In this article, a series of 1-arylnaphthalenes and 1,8-diarylnaphalenes were synthesized by the Suzuki-Miyaura cross-coupling methodology showing significant differentiation in the yields and selectivity between aryl rings with electron donating (higher yields), and electron withdrawing substituents (lower yields).