Photochemistry
Mostrando 1-12 de 141 artigos, teses e dissertações.
-
1. Supramolecular Approach in Energy Conversion Devices
This review summarizes investigations carried out at the Laboratory of Photochemistry and Energy Conversion (LFCE) in the University of São Paulo dealing with design and characterization of ruthenium(II), rhenium(I) and iridium(III) polypyridine complexes with desired photochemical and photophysical properties in light of the development of optoelectronics
J. Braz. Chem. Soc.. Publicado em: 2020-11
-
2. In Silico Target Identification and Validation for Antioxidant and Anti-inflammatory Activity of Selective Phytochemicals.
Abstract Phytochemicals present in plant extract include a number of biological active compounds which have shown promising antioxidant and anti-inflammatory activities in many animal studies. Present knowledge about the biochemical interactions of these compounds present in phytochemical extracts and target enzymes or proteins responsible for antioxidant an
Braz. arch. biol. technol.. Publicado em: 20/12/2019
-
3. Physiological response of Cucurbita pepo var. pepo mycorrhized by Sonoran desert native arbuscular fungi to drought and salinity stresses
ABSTRACT Plants response to symbiosis with arbuscular mycorrhizal fungi (AMF) under water stress is important to agriculture. Under abiotic stress conditions native fungi are more effective than exotics in improving plant growth and water status. Mycorrhization efficiency is related to soil fungi development and energy cost-benefit ratio. In this study, we a
Braz. J. Microbiol.. Publicado em: 2018-03
-
4. Chemistry Inspired by the Colors of Fruits, Flowers and Wine
ABSTRACT An overview is provided of the status of research at the frontiers of investigation of the chemistry and photochemistry of two classes of natural plant pigments, the anthocyanins and the betalains, as well as of the pyranoanthocyanin pigments formed from anthocyanins during the maturation of red wine. Together, anthocyanins and betalains are respons
An. Acad. Bras. Ciênc.. Publicado em: 2018
-
5. A FOTOQUÍMICA BÁSICA E APLICADA NO BRASIL DURANTE OS ÚLTIMOS 40 ANOS
This paper describes the activities in the area of Photochemistry in Brazil, from its origins at the beginning of the last Century until now. The original Research Groups (formed until 1980) in this area, as well as those created afterwards are indicated. Different orientations and specialties in photochemistry, and their extensions and uses in other fundame
Quím. Nova. Publicado em: 2017-07
-
6. A DIVISÃO DE FÍSICO QUÍMICA E OS 40 ANOS DA SBQ
One of the goals of this manuscript is to celebrate the forty years of the SBQ (Sociedade Brasileira de Química). We believe using historical analysis could benefit our researchers to overcome the challenges ahead, look into the future, to the scientific progress and the way science increases its problem-solving ability. There are several topics covered by
Quím. Nova. Publicado em: 2017-07
-
7. A importância do estado excitado 3MLCT de compostos de Ru(II), Re(I) e Ir(III) no desenvolvimento de fotossensores, oleds e fotorredução de CO2
The photochemistry and photophysics of coordination compounds have been extensively investigated not only because their structure, stability, reactivity dependence on the metal center oxidation state and the coordinated ligand; but also for their electronic transitions in a wide range of visible radiation. The knowledge of light absorption, excited state dea
Quím. Nova. Publicado em: 2017-02
-
8. Effects of Arbuscular Mycorrhiza on Osmotic Adjustment and Photosynthetic Physiology of Maize Seedlings in Black Soils Region of Northeast China
ABSTRACT To investigate the effect of arbuscular mycorrhiza fungi on maize growth, osmoregulation substances and photosynthetic physiology, a popular maize variety ZD 958 was measured under potted condition. Arbuscular mycorrhiza (AM) symbiosis promoted plant growth, and enhanced plant height, leaf length, mean leaf width and dry weight. Higher soluble sugar
Braz. arch. biol. technol.. Publicado em: 01/12/2016
-
9. "Photo" Chemistry Without Light?
In the early seventies, Giuseppe Cilento (São Paulo University), Emil White (Johns Hopkins University) and Angelo Lamola (AT&T Bell Laboratories) postulated that typical photochemical reactions could occur in dark parts of living organisms if coupled to enzymatic sources of electronically excited products. Their paradoxical hypothesis of "photochemistry wit
J. Braz. Chem. Soc.. Publicado em: 2015-12
-
10. Jatropha curcasand Ricinus communisdisplay contrasting photosynthetic mechanisms in response to environmental conditions
Higher plants display different adaptive strategies in photosynthesis to cope with abiotic stress. In this study, photosynthetic mechanisms and water relationships displayed byJatropha curcasL. (physic nuts) andRicinus communisL. (castor bean), in response to variations in environmental conditions, were assessed.R. communis showed higher CO2 assimilation, st
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-06
-
11. Obtenção e caracterização de ftalocianinas com substituintes quirais com potencial aplicação em terapia fotodinâmica / Synthesis and characterization ofphthalocyanines with chiralsubstituints with potencialfor use in Photodynamic Therapy
The main objective of this project is the synthesis and characterization of new phthalocyanines with chiral substituents to improve their photophysical and photochemical properties for use as photosensitizers in Photodynamic Therapy. Three new phthalocyanines were synthesized and characterized, one with the racemic mixture of 1-(4-bromophenyl)- ethanol, and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
-
12. Study of the Reactivity of complex ions cis-[Ru (bpy)2(L) (NO)]n+ where L = imidazole, 1-metilimidazole, thiourea and sulfite / Estudo da Reatividade dos Ãons complexos cis-[Ru(bpy)2(L)(NO)]n+ onde L=imidazol, 1-metilimidazol, tioureia e sulfito
We carried out studies of chemical reactivity, electrochemistry and photochemistry of complexes cis-[Ru(bpy)2(L)(NO)](PF6)n, where L = imidazole, 1-methylimidazole, thiourea and sulfite. Were chosen, therefore, two ligands being donors and two with ligands that act as -recipient and the results indicated that the nature and strength of these
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/01/2011