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Light-Emitting Porphyrin Derivative Obtained from a Subproduct of the Cashew Nut Shell Liquid: A Promising Material for OLED Applications
Fed Univ Ceara UFC, Organ & Inorgan Chem Dept, Lab Prod & Proc Technol LPT, Campus Pici, BR-60440900 Fortaleza, Ceara, Brazil.
Pontifical Catholic Univ Rio de Janeiro PUC Rio, Dept Phys, Mol Optoelect Lab LOEM, BR-22451900 Rio De Janeiro, RJ, Brazil;Univ Atlantic, Dept Phys, Puerto Colombia, Atlantico, Colombia.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.ORCID iD: 0000-0003-0377-3669
Fed Univ Ceara UFC, Organ & Inorgan Chem Dept, Lab Prod & Proc Technol LPT, Campus Pici, BR-60440900 Fortaleza, Ceara, Brazil.
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2019 (English)In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 12, no 7, article id 1063Article in journal (Refereed) Published
Abstract [en]

In this work, the meso-tetra[4-(2-(3-n-pentadecylphenoxy)ethoxy]phenylporphyrin (H2P), obtained from the cashew nut shell liquid (CNSL), and its zinc (ZnP) and copper (CuP) metallic complexes, were applied as emitting layers in organic light emitting diodes (OLEDs). These compounds were characterized via optical and electrochemical analysis and the electroluminescent properties of the device have been studied. We performed a cyclic voltammetry analysis to determine the Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO) energy levels for the porphyrins, in order to select the proper materials to assemble the device. H2P and ZnP presented fluorescence emission band in the red region, from 601 nm to 718 nm. Moreover, we verified that the introduction of bulky substituents hinders the - stacking, favoring the emission in the film. In addition, the strongest emitter, ZnP, presented a threshold voltage of 4 V and the maximum irradiance of 10 W cm(-2) with a current density (J) of 15 mA cm(-2) at 10 V. The CuP complex showed to be a favorable material for the design of OLEDs in the infrared. These results suggest that the porphyrins derived from a renewable source, such as CNSL, is a promising material to be used in organic optoelectronic devices such as OLEDs.

Place, publisher, year, edition, pages
MDPI , 2019. Vol. 12, no 7, article id 1063
Keywords [en]
cashew nut shell liquid, porphyrins, photoluminescence, electroluminescence, OLEDs
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-383201DOI: 10.3390/ma12071063ISI: 000465500700062PubMedID: 30939723OAI: oai:DiVA.org:uu-383201DiVA, id: diva2:1338563
Available from: 2019-07-23 Created: 2019-07-23 Last updated: 2019-07-23Bibliographically approved

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