Zvagelsky, Roman; Chubich, Dmytro; Pisarenko, Anastasia; Bedran, Zakhar; Zhukova, Elena published the article 《Plasmonic Metasurfaces as Surface-Enhanced Infrared Absorption Substrates for Optoelectronics: Alq3 Thin-Film Study》. Keywords: plasmonic metasurfaces surface enhanced IR absorption substrate optoelectronics; Alq thin film study.They researched the compound: Aluminum triquinolin-8-olate( cas:2085-33-8 ).Product Details of 2085-33-8. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:2085-33-8) here.
Conventional IR spectroscopy is widely used to analyze the structural properties of compounds in the fingerprint region. However, a precise spectroscopic study of thin films is a nontrivial task due to the small absorption cross sections of analytes. In this regard, surface-enhanced IR absorption (SEIRA) spectroscopy can be applied to overcome the limitation by the near-field enhancement of plasmonic metasurfaces. Here, we present for the first time the SEIRA study of the widely used organic optoelectronic material Tris(8-hydroxyquinoline) aluminum(III) (Alq3). A special design of the metasurfaces based on arrays of gold Y-shaped nanoantennas is developed for the SEIRA study of Alq3 thermally deposited layers with film thickness growth. This design supports two independent plasmonic resonances for each metasurface and makes it possible to use one SEIRA substrate for the precise study of several vibrational modes of the compound Observed near-field enhancement of the fabricated metasurfaces revealed a saturation and a diminishing in signal with the analyte layer thickness from half the height of gold nanoantennas onward. This effect is associated with Alq3 side accumulation as shown by at. force microscopy. A fabricated SEIRA substrate indicates the possibilities for further progress of spectroscopic chem. imaging in optoelectronics and is especially promising for organic electronic devices that consist of multiple layers of transport materials.
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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”