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Updated: Jun 25, 2025

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
Published on: September 12, 2014
In-Flow Heterogeneous Triplet-Triplet Annihilation Upconversion
Jorge Castellanos-Soriano1, Francisco Garnes-Portolés2, M Consuelo Jiménez1
1Departamento de Química, Universitat Politècnica de València (UPV), Camino de Vera, S/N 46022 Valencia, Spain.
Abstract:
Photon upconversion based on triplet-triplet annihilation (TTA-UC) is an attractive wavelength conversion with increasing use in organic synthesis in the homogeneous phase; however, this technology has not performed with canonical solid catalysts yet. Herein, a BOPHY dye covalently anchored on silica is successfully used as a sensitizer in a TTA system that efficiently catalyzes Mizoroki-Heck coupling reactions. This procedure has enabled the implementation of in-flow reaction conditions for the synthesis of a variety of aromatic compounds, and mechanistic proof has been obtained by means of transient absorption spectroscopy.
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