| Full text | |
| Author(s): |
da Silva, Fatima Chagas
[1, 2]
;
Pinheiro da Silva, Mauro Francisco
[1, 2, 3]
;
Briotto Filho, Decio
[1, 2]
;
Politi, Mario Jose
[1, 2]
;
Bacani, Rebeca
[4]
;
Triboni, Eduardo Rezende
[5]
Total Authors: 6
|
| Affiliation: | [1] Univ Sao Paulo, Biochem Dept, Lab Photochem & Fast Kinet, Inst Chem, Sao Paulo - Brazil
[2] Univ Sao Paulo, Chem Dept, Lab Photochem & Fast Kinet, Inst Chem, Sao Paulo - Brazil
[3] Univ Brasilia, Campus FUP, BR-73345010 Brasilia, DF - Brazil
[4] Univ Sao Paulo, Dept Mat, Escola Engn Lorena, Lorena - Brazil
[5] Univ Sao Paulo, Lab Photochem & Funct Mat, Sch Chem Engn, Sao Paulo - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Journal of Luminescence; v. 194, p. 240-247, FEB 2018. |
| Web of Science Citations: | 1 |
| Abstract | |
In this study, cerium oxide CeO2 was selected to exploit their applications with an also special class of organic compounds the naphthalene diimides. The 1,4,5,8-naphthaldiimides are known for their superior electrochemical activities comparable to those of Paraquat (Methyl Viologen) but with larger amplitude of photochemical applications. Cerium Oxide is a wide bandgap semiconductor well known for its catalytic capabilities and for its simple manipulation to prepare thin films and nanoparticles (NP). Aqueous suspensions containing positively charged diimide derivative N, N'-(N, N'-dimethylethyleneamine-N `'-butyl)-1,4,5,8-naphthaldiimide (NDI4) and NP of CeO2 were investigated. The UV-vis and fluorescent spectra of the NDI4 showed distinct features compared to those of that in bulk that arises from the sorption on the ceria surface. NDI4 interacted in a special manner with NP of CeO2 rendering a wide pH range hydrolytic inertness and novel photochromic behavior of the diimide. The organic dye is proposed to adsorb in the crevices of the NP and forming a charge transfer complex with CeO2 that accounts for the new photoactivities observed. (AU) | |
| FAPESP's process: | 15/06064-6 - Functional organic molecules and inorganic oxides for the development of new materials |
| Grantee: | Eduardo Rezende Triboni |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 13/08166-5 - Interfacial chemistry: drugs, peptides and ezymes interactions with membrane models |
| Grantee: | Iolanda Midea Cuccovia |
| Support Opportunities: | Research Projects - Thematic Grants |