| Full text | |
| Author(s): |
Perli, Gabriel
;
Soares, Marco C. P.
;
Cabral, Thiago D.
;
Bertuzzi, Diego L.
;
Bartoli, Julio R.
;
Livi, Sebastien
;
Duchet-Rumeau, Jannick
;
Cordeiro, Cristiano M. B.
;
Fujiwara, Eric
;
Ornelas, Catia
Total Authors: 10
|
| Document type: | Journal article |
| Source: | GELS; v. 8, n. 9, p. 16-pg., 2022-09-01. |
| Abstract | |
Carbon nanodots (CNDs) are interesting materials due to their intrinsic fluorescence, electron-transfer properties, and low toxicity. Here, we report a sustainable, cheap, and scalable methodology to obtain CNDs from sugarcane syrup using a domestic microwave oven. The CNDs were characterized by infrared spectroscopy, dynamic light scattering, atomic force microscopy, absorption, and emission spectroscopies. The CNDs have 3 nm in diameter with low polydispersity and are fluorescent. A fluorescent hydrogel-CNDs composite was obtained using gelatin polypeptide as the polymeric matrix. The new hydrogel-CNDs composite was incorporated in the cavities of a double-clad optical fiber using an innovative approach that resulted in a microstructured polymer optical fiber with intrinsic fluorescence. This work shows a promising alternative for the fabrication of fluorescent materials since the CNDs synthesis is sustainable and environmentally friendly. These CNDs might substitute the rare-earth and other heavy metals of high cost and toxicity, which are usually incorporated in double-clad fibers for applications on lasers, amplifiers, and spectroscopy. (AU) | |
| FAPESP's process: | 15/04929-0 - Development of biosensors for instantaneous detection of proteins and cancer cells, for application on on-site biopsy |
| Grantee: | Diego Luan Bertuzzi |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 19/22554-4 - Design and fabrication of non-conventional optical fibers for chemical sensing |
| Grantee: | Marco César Prado Soares |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 18/02093-0 - Development of new nanomaterials for nanomedicine applications |
| Grantee: | Cátia Cristina Capêlo Ornelas Megiatto |
| Support Opportunities: | Regular Research Grants |