Silicon nanocrystals functionalized with tetraphenylporphyrin Zn(II) chromophores at the periphery perform as light harvesting antennae: excitation of the porphyrin units in the visible spectral region yields sensitized emission of the silicon nanocrystal core in the near infrared with a long lifetime (lambda(max) = 905 nm, tau = 130 mu s). This result demonstrates that this hybrid material has a potential application as a luminescent probe for bioimaging.
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Data di pubblicazione: | 2015 | |
Titolo: | Light-harvesting antennae based on photoactive silicon nanocrystals functionalized with porphyrin chromophores | |
Autori: | Fermi, A; Locritani, M; Di Carlo, G; Pizzotti, M; Caramori, S; Yu, Yx; Korgel, Ba; Bergamini, G; Ceroni, P | |
Rivista: | FARADAY DISCUSSIONS | |
Parole Chiave: | QUANTUM YIELDS; ENERGY-TRANSFER; PHOTOLUMINESCENCE; NANOPARTICLES; LUMINESCENCE; PASSIVATION; | |
Abstract: | Silicon nanocrystals functionalized with tetraphenylporphyrin Zn(II) chromophores at the periphery perform as light harvesting antennae: excitation of the porphyrin units in the visible spectral region yields sensitized emission of the silicon nanocrystal core in the near infrared with a long lifetime (lambda(max) = 905 nm, tau = 130 mu s). This result demonstrates that this hybrid material has a potential application as a luminescent probe for bioimaging. | |
Digital Object Identifier (DOI): | 10.1039/c5fd00098j | |
Handle: | http://hdl.handle.net/11392/2363864 | |
Appare nelle tipologie: | 03.1 Articolo su rivista |
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