Nanochromics: old materials, new structures and architectures for high performance devices

Author(s)

Vidotti, Marcio ^[1] ; de Torresi, Susana I. Cordoba ^[2]

Affiliation

^[1] Univ Estadual Campinas, UNICAMP, Inst Chem, BR-13083970 Campinas, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil

• Document type: Journal article
• Source: Journal of the Brazilian Chemical Society; v. 19, n. 7, p. 1248-1257, 2008.
• Web of Science Citations: 23

Abstract

Due to the development of nanoscience, the interest in electrochromism has increased and new assemblies of electrochromic materials at nanoscale leading to higher efficiencies and chromatic contrasts, low switching times and the possibility of color tuning have been developed. These advantages are reached due to the extensive surface area found in nanomaterials and the large amount of organic electrochromic molecules that can be easily attached onto inorganic nanoparticles, as TiO2 or SiO2. Moreover, the direct contact between electrolyte and nanomaterials produces high ionic transfer rates, leading to fast charge compensation, which is essential for high performance electrochromic electrodes. Recently, the layer-by-layer technique was presented as an interesting way to produce different architectures by the combination of both electrochromic nanoparticles and polymers. The present paper shows some of the newest insights into nanochromic science. (AU)

• FAPESP's process: 03/10015-3 - Organized arrays of macromolecules and nanostructures for the development of sensors and microbatteries
• Grantee: Roberto Manuel Torresi
• Support Opportunities: PRONEX Research - Thematic Grants