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Light-Harvesting Antennae using the Host–Guest Chemistry of Mesoporous Organosilica

Lookup NU author(s): Dr Fabio Cucinotta, Dr Ben Jarman


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This study presents two series of new host–guest chromophoric systems, where BODIPY dyes are organized into mesoporous silica. The dyes self-assemble with surfactants to generate micellar templates that can direct the formation of the silica networks. The materials were characterized by means of small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) to elucidate their structure, and by UV/Vis absorption spectroscopy to determine their optical properties. Dye-loaded COK-12 materials retain an ordered structure and exhibit a green fluorescence that slightly red-shifts and undergoes quenching as the dye loading increases. A second system is based on MCM-41 silica and works as a polychromatic antenna, where a high energy species forms within the template and drive excitation energy transfer in timescales down to 20 ps. Such systems show promising performances for the realization of photonic antennae, to be used as sensitizers for solar cells and photocatalytic devices.

Publication metadata

Author(s): Cucinotta F, Jarman BP, Caplan C, Cooper SJ, Riggs HJ, Martinelli J, Djanashvili K, LaMazza E, Puntoriero F

Publication type: Article

Publication status: Published

Journal: ChemPhotoChem

Year: 2018

Volume: 2

Issue: 3

Pages: 196-206

Print publication date: 13/03/2018

Online publication date: 10/11/2017

Acceptance date: 10/11/2017

ISSN (electronic): 2367-0932

Publisher: Wiley


DOI: 10.1002/cptc.201700144

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