| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 |
 264 3 |
| Ultima descărcare din IBN: 2024-01-06 20:22 |
 SM ISO690:2012, , POPUSHOI, Ana, , , ROBU, Stephan V., BULIMESTRU, Ion. Photophysics of tetracarboxy-zinc phthalocyanine photosensitizers. In: RSC Advances, 2022, nr. 49(12), pp. 31778-31785. ISSN 2046-2069. DOI: https://doi.org/10.1039/d2ra05676c |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
  RSC Advances |
||||||
| Numărul 49(12) / 2022 / ISSN 2046-2069 | ||||||
|
||||||
| DOI:https://doi.org/10.1039/d2ra05676c | ||||||
| Pag. 31778-31785 | ||||||
|
||||||
 Descarcă PDF |
||||||
| Rezumat | ||||||
Zinc-tetracarboxy-phthalocyanine (ZnPc(COOH)4) was synthesized by a melting method and basic hydrolysis. A ZnPc(COOH)4/Fe3O4/Ch composite was prepared by immobilization of ZnPc(COOH)4 onto Fe3O4/chitosan nanoparticles by a simple immersion method. The photophysical properties were studied using UV-vis spectrophotometry, fluorescence spectroscopy and time-correlated single photon counting (TCSPC) in different aqueous solutions. The UV-vis spectra of the ZnPc(COOH)4/Fe3O4/Ch composite displays absorption by the aromatic rings, with a Q band exhibited at λmax = 702 nm. Moreover, the ZnPc(COOH)4/Fe3O4/Ch composite exhibits long triplet-state lifetimes of 1.6 μs and 12.3 μs, crucial for application as a photosensitizer. A triplet quantum yield of 0.56 for the ZnPc(COOH)4/Fe3O4/Ch composite in DMSO/H2O was achieved. FTIR showed that the conjugation of ZnPc(COOH)4 with Fe3O4/chitosan nanoparticles was achieved by electrostatic interaction. |
||||||
| Cuvinte-cheie Fluorescence, Fluorescence spectroscopy, Fourier transform infrared spectroscopy, nanoparticles, Particle beams, Photosensitizers, Zinc, Zinc compounds |
||||||
|
|
|
|
