Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Raigna A. Silva"'
Autor:
Gustavo Gonçalves Dalkiranis, Fernando Costa Basílio, Roberto S. Nobuyasu, Silésia de Fátima Curcino da Silva, Sandra Lucia Dias Nogueira, Eralci Moreira Therézio, Françoise Serein-Spirau, Raigna A. Silva, Alexandre Marletta
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 293:122437
Autor:
Henrique de Santana, Raigna A. Silva, Sankler Soares de Sá, Alexandre Marletta, Eralci M. Therézio, Aleffe Bruno Schura
Publikováno v:
Journal of Materials Science: Materials in Electronics. 30:4289-4295
In this work, energy transfer processes are quantified to poly(3-hexylthiophene) (P3HT) polymeric films synthesized electrochemically. Results obtained are linked to pristine chains, mixed chains (composite by quinone and pristine chains) and oligome
Autor:
Emerson A. Fonseca, Alexandre Simões Barbosa, Hudson Miranda, Rafael P. Vieira, Renan Cunha, Lucas Lafeta, Helton G. Medeiros, Ado Jorio, Leandro M. Malard, Raigna A. Silva, João Luiz Elias Campos, Marco Aurélio Romano-Silva
Publikováno v:
The Analyst. 144:7049-7056
The global prevalence of Alzheimer's disease (AD) points to endemic levels, especially considering the increase of average life expectancy worldwide. AD diagnosis based on early biomarkers and better knowledge of related pathophysiology are both cruc
Autor:
José Roberto Tozoni, Alexandre Marletta, Sandra M. Cassemiro, Angelita M. Machado, Marcelo Castanheira da Silva, Joniel C. F. Alves, Raigna A. Silva, José A. Freire, Françoise Serein-Spirau, Leni Akcelrud, Thibault Jarrosson, S. L. Nogueira
Publikováno v:
The Journal of Physical Chemistry A. 120:9702-9706
We studied the absorption line-shape of poly(p-phenylenevinylene) (PPV) films deposited via spin coating and Langmuir-Blodgett techniques with the intent of identifying the conjugation length distribution in these two types of films, a key morphologi
Autor:
Kaluana P. de Oliveira, Noelio O. Dantas, Tito José Bonagamba, Alexandre Marletta, Raigna A. Silva, Francisco Manuel Braz Fernandes, Anielle Christine Almeida Silva, Erick Piovesan, José Roberto Tozoni, Patricia T. Campana, M. Manuela M. Raposo
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
This article presents a successfully development of hybrid functional nanomaterials composed of Protoporphyrin-IX/Halloysite nanotubes (PpIX/HNTs), in which the PpIX molecules were adsorbed on the surface of the HNTs at different degree of aggregatio
Autor:
Raigna A. Silva, Mauricio Foschini, Hugo Santos Silva, Silésia de Fátima Curcino da Silva, José Roberto Tozoni, Fernando A. Castro, Alexandre Marletta
Publikováno v:
Organic Electronics. 13:2935-2939
This paper reports the influence of the molecular relaxation temperature and electric field on the emission efficiency of poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene-vinylene] (MEH-PPV) in Organic Light-Emitting Diode (OLED) structure. We obs
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 106:347-354
Quality control of fuel-related properties of biodiesel, such as thermal stability, is needed to obtain consistent engine performance by fuel users, since biodiesel is susceptible to auto-oxidation when exposed to air, light, and temperature during s
Autor:
José Roberto Tozoni, L. C. Poças, S. L. Nogueira, Roberto S. Nobuyasu, M. J. M. Pires, Alexandre Marletta, Raigna A. Silva, Gustavo G. Dalkiranis
Publikováno v:
Journal of Materials Science. 46:2644-2648
This article discusses a strategy to reduce the degradation of a poly(p-phenylene vinylene) (PPV) film at the interface with an indium–tin oxide (ITO) electrode. It consists of using a less aggressive leaving group, the sodium dodecylbenzenesulfona
Publikováno v:
Journal of Non-Crystalline Solids. 356:2429-2432
This work addresses the effects of Gamma radiation on the absorbance and emission properties in layer-by-layer (LbL) poly( p -phenylene vinylene) (PPV)/dodecylbenzenesulfonate (DBS) thin films. The LbL PPV/DBS films were irradiated with 2 Gy and 100
Autor:
Raigna A. Silva, Paulo Sérgio Soares Guimarães, Françoise Serein-Spirau, Alexandre Marletta, Mohammed Bouachrine, Luiz A. Cury, Jean-Pierre Lère-Porte, Joël J. E. Moreau
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics
Journal of Polymer Science Part B: Polymer Physics, Wiley, 2010, 48 (9), pp.964-971. ⟨10.1002/polb.21984⟩
Journal of Polymer Science Part B: Polymer Physics, Wiley, 2010, 48 (9), pp.964-971. ⟨10.1002/polb.21984⟩
International audience; Thienylene–dialkoxyphenylene copolymers with polar side chains are soluble in most organic solvents and exhibit excellent glass adhesion properties, allowing the formation of homogeneous thin films on glass, quartz, and othe