{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T21:50:14Z","timestamp":1788472214973,"version":"build-2803163510"},"reference-count":47,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2019,4,1]],"date-time":"2019-04-01T00:00:00Z","timestamp":1554076800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["not applied"],"award-info":[{"award-number":["not applied"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","award":["not applied"],"award-info":[{"award-number":["not applied"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004586","name":"Funda\u00e7\u00e3o Carlos Chagas Filho de Amparo \u00e0 Pesquisa do Estado do Rio de Janeiro","doi-asserted-by":"publisher","award":["not applied"],"award-info":[{"award-number":["not applied"]}],"id":[{"id":"10.13039\/501100004586","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>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 \u03c0\u2013\u03c0 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 \u03bcW cm\u22122 with a current density (J) of 15 mA cm\u22122 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.<\/jats:p>","DOI":"10.3390\/ma12071063","type":"journal-article","created":{"date-parts":[[2019,4,2]],"date-time":"2019-04-02T03:21:26Z","timestamp":1554175286000},"page":"1063","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Light-Emitting Porphyrin Derivative Obtained from a Subproduct of the Cashew Nut Shell Liquid: A Promising Material for OLED Applications"],"prefix":"10.3390","volume":"12","author":[{"given":"Nayane Maria","family":"de Amorim Lima","sequence":"first","affiliation":[{"name":"Laboratory of Products and Process Technology (LPT), Organic and Inorganic Chemistry Department, Federal University of Ceara (UFC), Campus do Pici, Fortaleza-CE 60440-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Harold Jos\u00e9","family":"Camargo Avila","sequence":"additional","affiliation":[{"name":"Molecular Optoelectronic Laboratory (LOEM), Physics Department, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro-RJ 22451-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0377-3669","authenticated-orcid":false,"given":"Cleber Fabiano","family":"do Nascimento Marchiori","sequence":"additional","affiliation":[{"name":"Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 534, SE-75121 Uppsala, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samuel","family":"Gondim Sampaio","sequence":"additional","affiliation":[{"name":"Laboratory of Products and Process Technology (LPT), Organic and Inorganic Chemistry Department, Federal University of Ceara (UFC), Campus do Pici, Fortaleza-CE 60440-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jo\u00e3o Paulo","family":"Ferreira Mota","sequence":"additional","affiliation":[{"name":"Laboratory of Products and Process Technology (LPT), Organic and Inorganic Chemistry Department, Federal University of Ceara (UFC), Campus do Pici, Fortaleza-CE 60440-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Viviane","family":"Gomes Pereira Ribeiro","sequence":"additional","affiliation":[{"name":"Institute of Exact and Natural Sciences - ICEN, University of International Integration of Afro-Brazilian Lusophony, Reden\u00e7\u00e3o-CE 62790-000, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5227-0964","authenticated-orcid":false,"given":"Claudenilson","family":"da Silva Clemente","sequence":"additional","affiliation":[{"name":"Laboratory of Products and Process Technology (LPT), Organic and Inorganic Chemistry Department, Federal University of Ceara (UFC), Campus do Pici, Fortaleza-CE 60440-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6684-990X","authenticated-orcid":false,"given":"Giuseppe","family":"Mele","sequence":"additional","affiliation":[{"name":"Department of Innovation Engineering, University of Salento, Via Arnesano, 73100 Lecce, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marco","family":"Cremona","sequence":"additional","affiliation":[{"name":"Molecular Optoelectronic Laboratory (LOEM), Physics Department, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro-RJ 22451-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6879-3209","authenticated-orcid":false,"given":"Selma Elaine","family":"Mazzetto","sequence":"additional","affiliation":[{"name":"Laboratory of Products and Process Technology (LPT), Organic and Inorganic Chemistry Department, Federal University of Ceara (UFC), Campus do Pici, Fortaleza-CE 60440-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,4,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bergamini, G., and Silvi, S. 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