Light-harvesting antennae based on photoactive silicon nanocrystals functionalized with porphyrin chromophores

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.

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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http://hdl.handle.net/11392/2363864
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