Inorganic Chemistry
Mostrando 1-12 de 89 artigos, teses e dissertações.
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1. NMR Relaxometry Applied to Chemical Studies of Paramagnetic Metal Cation Complexes: Fundamentals and Applications
Low field time-domain nuclear magnetic resonance (TD-NMR) relaxometry of paramagnetic metal cations (PMC) has been widely used to study and improve contrast agents for magnetic resonance imaging (MRI). However, despite its remarkable potential, TD-NMR is rarely used to study PMC complexes, and coordination compounds in non-biomedical application. Therefore,
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. USO DA TEORIA DO FUNCIONAL DE DENSIDADE NA ANÁLISE DE SPIN CROSSOVER EM AULAS DE QUÍMICA INORGÂNICA
Spin crossover is a property found in some coordination compounds formed by the first series of transition metals with d4-d7 configuration. These complexes, when stimulated by an external factor (temperature, light, etc.), can be converted from their low spin states to high spin states, or vice versa. However, this issue is not addressed in the Inorganic Che
Quím. Nova. Publicado em: 2020-01
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3. RM1 Semiempirical Model: Chemistry, Pharmaceutical Research, Molecular Biology and Materials Science
In this review, we show improvements to the semiempirical quantum chemical method RM1 and present a wide range of its applications as reported by researchers of various areas, such as theoretical, organic, physical, analytical, and inorganic chemistry, as well as their interfaces with medicinal chemistry, biology, and materials science. Success of RM1 is see
J. Braz. Chem. Soc.. Publicado em: 2019-04
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4. EXPLAINING THE GEOMETRY OF SIMPLE MOLECULES USING MOLECULAR ORBITAL ENERGY-LEVEL DIAGRAMS BUILT BY USING SYMMETRY PRINCIPLES
The built of qualitative energy-level molecular diagrams for different geometries of simple molecules allow to explain the preferred geometry. The diagrams are built using simple symmetry principles and explain, on basis of the number of nonbonding electrons, for example, why the molecule of water is bent and not linear and ammonia is pyramidal and not plana
Quím. Nova. Publicado em: 2018-05
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5. A VERSATILIDADE DO ELETRODO DE GOTA PENDENTE DE MERCÚRIO EM QUÍMICA ANALÍTICA - UMA REVISÃO SOBRE RECENTES APLICAÇÕES
Voltammetry using mercury electrode as working electrode has been employed in the determination of organic and inorganic compounds in several samples. A review on the applications of this analytical tool is present, covering the period of the last ten years. The emphasis of this work is directed to the hanging mercury drop electrode (HMDE), its advantages, d
Quím. Nova. Publicado em: 2018-02
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6. PANORAMA DA QUÍMICA INORGÂNICA NO BRASIL REVISITADO: PERÍODO DE 2002 A 2016
The present article describes the development of the Inorganic Chemistry in Brazil in the last 15 years, using as starting point the scientific contributions of a group of 405 researchers selected among the members of the Inorganic Chemistry Division of the Brazilian Chemical Society (SBQ), and active participants of both SBQ Annual Meetings and Brazilian Me
Quím. Nova. Publicado em: 2017-07
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7. PERFIL DOS BOLSISTAS DE PRODUTIVIDADE EM PESQUISA NAS SUBÁREAS DA QUÍMICA DO CNPq
The profile analysis of CNPq Research Productivity Fellows (PQ) in the four subfields of chemistry and in their respective specialties highlighted particularities with regard to the indicators related to the judging criteria established by the Chemistry Advisory Committee. The curricula of all 727 PQ fellows with active grants in 15/03/2013 were analyzed spa
Quím. Nova. Publicado em: 2016-04
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8. FASES ESTACIONÁRIAS DE LÍQUIDOS IÔNICOS EM CROMATOGRAFIA GASOSA: FUNDAMENTOS, AVANÇOS RECENTES E PERSPECTIVAS
Since their original discovery in 1914, ionic liquids (IL) have been widely examined and explored in chemistry due to their unique physical and chemical properties. Ionic liquids are collectively known as organic salts and have melting points of 100 °C or under. The molten salts most employed in analytical chemistry, including gas chromatography (GC), consi
Quím. Nova. Publicado em: 2016-01
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9. CÉLULAS SOLARES SENSIBILIZADAS POR CORANTES NATURAIS: UM EXPERIMENTO INTRODUTÓRIO SOBRE ENERGIA RENOVÁVEL PARA ALUNOS DE GRADUAÇÃO
An interesting practical experiment about the preparation of dye–sensitized solar cells (DSSC) using natural dyes were carried out by the undergraduate students in the chemistry course at UNICAMP . Natural dyes were extracted from blueberries (Vaccinium myrtillus L.), jabuticabas (Myrciaria cauliflora), raw and cooked beets (Beta vulgaris L.), and annattos
Quím. Nova. Publicado em: 2015-12
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10. From Lighting to Photoprotection: Fundamentals and Applications of Rare Earth Materials
Light and rare earths (RE) have a long lived relationship that dates from the discoveries of these elements in the nineteenth century. Since then, the increasing comprehension of their spectroscopic properties conducted to a wide and alluring literature about light absorption and emission by this particular and fascinating group. For more than 50 years, RE-c
J. Braz. Chem. Soc.. Publicado em: 2015-12
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11. TREATMENT OF WASTE FROM ATOMIC EMISSION SPECTROMETRIC TECHNIQUES AND REUSE IN UNDERGRADUATE LAB CLASSES FOR QUALITATIVE ANALYSIS
Flame atomic absorption spectrometry (FAAS) and inductively coupled plasma optical emission spectrometry (ICP OES) are widely used in academic institutions and laboratories for quality control to analyze inorganic elements in samples. However, these techniques have been observed to underperform in sample nebulization processes. Most of the samples processed
Quím. Nova. Publicado em: 2015-11
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12. METODOLOGIAS DE SÍNTESE EM FASE LÍQUIDA PARA A OBTENÇÃO DE NANOMATERIAIS INORGÂNICOS À BASE DE TERRAS RARAS
Liquid phase synthesis techniques are commonly preferred for the preparation of nanosized inorganic solids due to several advantages over other methodologies, such as low energy consumption, safety, possibility of reactant recovery and, mainly, the homogeneity of the precursors and control of particle sizes and morphologies through bottom-up approaches. I
Quím. Nova. Publicado em: 2015-06