Optical properties of colloidal suspensions and films based on nanocelluloses and lanthanides

• Grant number: 14/12424-2
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: September 01, 2014
• End date: February 29, 2016
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Sidney José Lima Ribeiro
• Grantee: Moliria Vieira dos Santos
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil

Abstract

The bacterial cellulose produced on the surface of the culture medium of the bacteria Gluconacetobacter xylinus will be used for the production of nanocelulose, in other words, cellulose crystallites of nanometric dimensions that in aqueous suspension can self-organize to form chiral nematic phases. The suspensions will be characterized as the possibility of control of the cholesteric pitch and therefore the pseudo-color observed. Films will be deposited on glass substrates by techniques "doctor-blade" for the formation of materials with different "pseudo-color" which are called in this way due to the absence of pigments. Colloidal suspensions and films containing lanthanide ions will be also prepared and their emission properties in the visible and infrared regions will be featured together with the properties of pseudo-color and iridescence due to self-organization. (AU)

Scientific publications

(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SANTOS, MOLIRIA V.; PECORARO, EDISON; SANTAGNELI, SILVIA H.; MOURA, ANDRE L.; CAVICCHIOLI, MAURICIO; JEREZ, VLADIMIR; ROCHA, LUCAS A.; DE OLIVEIRA, LUIZ FERNANDO C.; GOMES, ANDERSON S. L.; DE ARAUJO, CID B.; et al. Silk fibroin as a biotemplate for hierarchical porous silica monoliths for random laser applications. JOURNAL OF MATERIALS CHEMISTRY C, v. 6, n. 11, p. 2712-2723, MAR 21 2018. (14/12424-2, 16/11591-8)

MENDOZA-GALVAN, ARTURO; MUNOZ-PINEDA, ELOY; RIBEIRO, SIDNEY J. L.; SANTOS, MOLIRIA V.; JARRENDAHL, KENNETH; ARWIN, HANS. Mueller matrix spectroscopic ellipsometry study of chiral nanocrystalline cellulose films. Journal of Optics, v. 20, n. 2, FEB 2018. (14/12424-2)

SILVA, ROBSON R.; SALVI, DENISE T. B.; SANTOS, MOLIRIA V.; BARUD, HERNANE S.; MARQUES, LIPPY F.; SANTAGNELI, SILVIA H.; TERCJAK, AGNIESZKA; RIBEIRO, SIDNEY J. L.. Multifunctional organic-inorganic hybrids based on cellulose acetate and 3-glycidoxypropyltrimethoxysilane. Journal of Sol-Gel Science and Technology, v. 81, n. 1, SI, p. 114-126, JAN 2017. (13/12367-6, 14/12424-2, 14/24692-1)

SANTOS, MOLIRIA V.; TERCJAK, AGNIESZKA; GUTIERREZ, JUNKAL; BARUD, HERNANE S.; NAPOLI, MARIANA; NALIN, MARCELO; RIBEIRO, SIDNEY J. L.. Optical sensor platform based on cellulose nanocrystals (CNC)-4'-(hexyloxy)-4-biphenylcarbonitrile (HOBC) bi-phase nematic liquid crystal composite films. Carbohydrate Polymers, v. 168, p. 346-355, JUL 15 2017. (14/12424-2, 13/07793-6, 12/05087-4)

SILVA, ROBSON R.; SALVI, DENISE T. B.; SANTOS, MOLIRIA V.; BARUD, HERNANE S.; MARQUES, LIPPY F.; SANTAGNELI, SILVIA H.; TERCJAK, AGNIESZKA; RIBEIRO, SIDNEY J. L.. Multifunctional organic-inorganic hybrids based on cellulose acetate and 3-glycidoxypropyltrimethoxysilane. Journal of Sol-Gel Science and Technology, v. 81, n. 1, p. 13-pg., 2017-01-01. (14/12424-2, 14/24692-1, 13/12367-6)

SANTOS, MOLIRIA V.; MATURI, FERNANDO E.; PECORARO, EDISON; BARUD, HERNANE S.; LIMA, LAIS R.; FERREIRA, RUTE A. S.; CARLOS, LUIS D.; RIBEIRO, SIDNEY J. L.. Cellulose Based Photonic Materials Displaying Direction Modulated Photoluminescence. FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY, v. 9, MAR 30 2021. (14/12424-2, 16/11591-8)

SANTOS, MOLIRIA V.; BARUD, HERNANE S.; ALENCAR, MONICA A. S.; NALIN, MARCELO; TOMA, SERGIO H.; ARAKI, KOITI; BENEDETTI, ASSIS V.; MACIEL, INDHIRA O.; FRAGNEAUD, BENJAMIN; LEGNANI, CRISTIANO; et al. Self-Supported Smart Bacterial Nanocellulose-Phosphotungstic Acid Nanocomposites for Photochromic Applications. FRONTIERS IN MATERIALS, v. 8, MAY 13 2021. (14/12424-2, 13/07793-6, 16/11591-8, 13/24725-4, 18/25512-8, 20/04509-9)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SANTOS, Moliria Vieira dos. Bacterial cellulose and silk fibroin biopolymers: biotemplates to design nanostructured materials for optical applications. 2016. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Química. Araraquara Araraquara.