2D self-assembly of o-OPE foldamers for chiroptical barcoding
| Autor: | Irene López-Sicilia, Ana M. Ortuño, Pablo Reine, Dario Otero, María T. Martín-Romero, Luis Camacho, Luis Álvarez de Cienfuegos, Angel Orte, Juan J. Giner-Casares, Delia Miguel, Juan M. Cuerva |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Popis: | We report on the preparation and characterization of two dimensional (2D) films of (S,S,P)-1 and (R,R,M)-1 ortho-oligophenylene ethylene (o-OPE) enantiomers presenting high values of circularly polarized luminescence (CPL). The amphiphilic character of these two molecules allows a precise 2D self-assembly at the air/water interface and an efficient transfer onto a glass solid support. The morphological and chiroptical characterization of the solid supports after the transfer of 1, 8, 16 and 32 Langmuir films of (S,S,P)-1 and (R,R,M)-1 has been carried out. The strong chiroptical values of these monomers allow reliable ECD measurements to be obtained after a single transfer, with ECD values increasing as the number of transferred films increases. The semi-liquid behavior of the monomers on the solid substrate allows CPL measurements free of photoselection artifacts that show values similar to those obtained in solution and independent of monomer concentration. All these properties have allowed us to develop the first simple organic molecule (SOM)-based chiroptical barcoding presenting positive and negative regions as a proof of concept. Spanish Ministry of Science and Innovation (AEI, Spain) PID2020-112744GB-I00 Ministry of Science and Innovation, Spain (MICINN) Spanish Government MCIN/AIE FSE "El FSE invierte en tu futuro" in Spain FEDER/Junta de Andalucia-Consejeria de Economia y Conocimiento/Proyecto PID2020-113059GB-C21/AEI PRE2021-097546 FPU16/02597 P20_00162 |
| Databáze: | OpenAIRE |
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