| Texto completo | |
| Autor(es): |
Schimidt, Marcos F. R. A.
[1, 2]
;
Junqueira, Helena C.
[3]
;
Pedras, Bruno
[4]
;
Berberan-Santos, Mario N.
[4]
;
Triboni, Eduardo R.
[1]
;
Florenzano, Fabio H.
[2]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, EEL, Lab Nanotechnol & Engn Proc NEP, BR-12602810 Lorena, SP - Brazil
[2] Univ Sao Paulo, EEL, Dept Engn Mat, Sao Paulo - Brazil
[3] Univ Sao Paulo, Inst Quim, Dept Bioquim, Sao Paulo - Brazil
[4] Univ Lisbon, Inst Super Tecn, iBB Inst Bioengn & Biosci, P-1049001 Lisbon - Portugal
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS; v. 266, APR 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
The photoluminescence (PL) of powders consisting of N,N'-(N,N'-dimethylethyleneamine-N `'-allyl) - 1,4,5,8-naphthaldiimide (ANDI) and polystyrene (PS) was studied as they are simply ground together and as repetitive units of copolymers. Reflectance absorption spectra showed typical solid-state ANDI CT-band from 430 nm until 600 nm by both the mixture and the copolymers. PL of the copolymers was proposed to be a CT-emission that comes from the electron donor-acceptor styrene-NDI interaction. Under excitation at 365 nm, the copolymers exhibited emission, lambda(max) similar to 500 nm, with intensity inversely proportional to the ANDI amount. The PS-ANDI ground powders displayed an excimer-like emission band at ca. 485 nm, inversely, increasing ANDI amount in the mix, PL increases. XRD analysis showed that the ANDI crystals were dismantled in some extent inside the PS matrix as they were ground together. An easy method was developed to obtain an emitting-solid system that can be useful to generate charge-transfer devices. (AU) | |
| Processo FAPESP: | 17/13839-0 - Sistemas orgânicos e inorgânicos para a preparação de meso e nanoestruturas |
| Beneficiário: | Eduardo Rezende Triboni |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 13/08166-5 - Química em interfaces: interações de fármacos, peptídios e enzimas com membranas modelos |
| Beneficiário: | Iolanda Midea Cuccovia |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |