Synthesis of new bis[1-(thiophenyl)propynones] as potential organic dyes for colorless luminescent solar concentrators (LSCs)

Abstract

New luminophores having different aryl nuclei and propynones moieties have been obtained via Sonogashira reactions. Their optical properties were evaluated and indicated that carbonyl groups are responsible for significant bathochromic effects and high Stokes shifts. The insertion of-OMe groups on the central benzene unit gives to the fluorophore high optical efficiency (7.7%) when homogeneously dispersed in a poly(cyclohexyl methacrylate) (PCMA) film and connected to a PV cell.

Luminescent Solar Collectors: Quo Vadis?

“…Evaluation in thin-film devices (5 × 5 × 0.3 cm) led to η opt = 7.7%, but technical details were lacking. [121] Cycloparaphenylenes (11) with very large Stokes shift and low SA have been described. Optical efficiencies of 3.8% and 11% were reported for devices of unspecified characteristics based on compounds containing 8 and 10 rings with a φ PL of 14% and 78% in a PMMA matrix.…”

Earth abundant colloidal carbon quantum dots for luminescent solar concentrators

“…25,27,30,[33][34][35] In the past forty years of research, various types of fluorophores have been used as absorbers/emitters for LSCs, including organic dyes, polymers, upconversion nanocrystals (NCs), quantum wells, QDs and perovskite NCs etc. 8,27,33,[36][37][38][39][40] Among them, colloidal QDs have attracted a lot of attention as fluorophores for application in LSCs due to their excellent optical properties, including size/shape/chemical composition tunable absorption spectra, structurally engineered Stokes shift, high QYs and improved photostability compared to traditional organic dyes/polymers. 8,29,38,[40][41][42][43] However, most inorganic QDs (e.g.…”

Palladium(II) on 4 Å Molecular Sieves: A Simple and Reusable Catalyst for the Preparation of Ynones

“…Ynones are widely used as anti-inflammatory and anticarcinogenic [12] agents. They are also important intermediates in the synthesis of dyes for luminescent solar concentrators [13][14][15].…”