This study examines for the first time the use of an aggregation-induced emission luminogen (AIEgen, TPE_RED) as an initiator to prepare red-emitting poly(methyl methacrylate) (PMMA) polymers, i.e. PMMA_TPE_RED, for the realization of high performance luminescent solar concentrators (LSCs). TPE_RED is a photostable red-emitting AIEgen with D–A features and a 2-bromo-2-methylpropanoate unit able to initiate the ATRP polymerization of MMA. PMMA_TPE_RED polymers containing 0.98–3.05 wt% of TPE_RED absorb visible light in the range between 400 and 600 nm, and emit fluo- rescence at around 610–650 nm when aggregated in solution or in the solid state, with a maximum quantum yield (QY) of 26.5%. PMMA_TPE_RED films experience partial fluorescence quenching with the TPE_RED content possibly due to auto-absorption phenomena and the formation of less emissive micro- sized clusters of chromophoric entities. Physical blending of PMMA_TPE_RED with commercially available PMMA provides a film with a smooth texture and LSCs with optical efficiencies of 10% thanks to the superior light harvesting features of the homogeneously distributed AIEgen.
Luminescent solar concentrators based on PMMA films obtained from a red-emitting ATRP initiator / Mori, Riccardo; Iasilli, Giuseppe; Lessi, Marco; Muñoz-García, Ana Belén; Pavone, Michele; Bellina, Fabio; Pucci, Andrea. - In: POLYMER CHEMISTRY. - ISSN 1759-9954. - 9:10(2018), pp. 1168-1177. [10.1039/C7PY01933E]
Luminescent solar concentrators based on PMMA films obtained from a red-emitting ATRP initiator
Muñoz-García, Ana Belén;Pavone, Michele;
2018
Abstract
This study examines for the first time the use of an aggregation-induced emission luminogen (AIEgen, TPE_RED) as an initiator to prepare red-emitting poly(methyl methacrylate) (PMMA) polymers, i.e. PMMA_TPE_RED, for the realization of high performance luminescent solar concentrators (LSCs). TPE_RED is a photostable red-emitting AIEgen with D–A features and a 2-bromo-2-methylpropanoate unit able to initiate the ATRP polymerization of MMA. PMMA_TPE_RED polymers containing 0.98–3.05 wt% of TPE_RED absorb visible light in the range between 400 and 600 nm, and emit fluo- rescence at around 610–650 nm when aggregated in solution or in the solid state, with a maximum quantum yield (QY) of 26.5%. PMMA_TPE_RED films experience partial fluorescence quenching with the TPE_RED content possibly due to auto-absorption phenomena and the formation of less emissive micro- sized clusters of chromophoric entities. Physical blending of PMMA_TPE_RED with commercially available PMMA provides a film with a smooth texture and LSCs with optical efficiencies of 10% thanks to the superior light harvesting features of the homogeneously distributed AIEgen.File | Dimensione | Formato | |
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