{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T00:16:26Z","timestamp":1789517786720,"version":"build-2803163510"},"reference-count":74,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2020,12,9]],"date-time":"2020-12-09T00:00:00Z","timestamp":1607472000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Anahuac M\u00e9xico University","award":["NNAIASEVM16070616"],"award-info":[{"award-number":["NNAIASEVM16070616"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The structure formed by cobalt phthalocyanine (CoPc) and cobalt octaethylporphyrin (CoOEP) with electron-acceptor tetracyano-\u03c0-quinodimethane (TCNQ), was studied by Density Functional Theory (DFT) methods. According to theoretical calculations, both cobalt systems can establish dispersion forces related to TCNQ and also in both cases the link between them is built by means of hydrogen bonds. Based on the results of these DFT calculations, we developed experimental work: the organic semiconductors were doped, and the thermal evaporation technique was used to prepare semiconductor thin films of such compounds. The structure of the films was studied by FTIR and Raman spectroscopy. The optical properties of the CoPc-TCNQ and CoOEP-TCNQ films were investigated by means of UV-Vis measurements. The results obtained were used to estimate the type of transitions and the optical bandgap. The results were compared to the previously calculated theoretical bandgap. The CoOEP-TCNQ film presented the smallest theoretical and experimental bandgap. Finally, the electrical properties of the organic semiconductors were evaluated from a PET (polyethylene terephthalate)\/indium tin oxide (ITO)\/cobalt macrocycle-TCNQ\/silver (Ag) device we prepared. The CoOEP-TCNQ-based device showed an ohmic behavior. The device manufactured from CoPc-TCNQ also showed an ohmic behavior at low voltages, but significantly changed to SCLC (space-charge limited conductivity) at high voltage values.<\/jats:p>","DOI":"10.3390\/molecules25245800","type":"journal-article","created":{"date-parts":[[2020,12,10]],"date-time":"2020-12-10T22:15:36Z","timestamp":1607638536000},"page":"5800","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["A Comparative Study of the Semiconductor Behavior of Organic Thin Films: TCNQ-Doped Cobalt Phthalocyanine and Cobalt Octaethylporphyrin"],"prefix":"10.3390","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7163-6175","authenticated-orcid":false,"given":"Mar\u00eda Elena","family":"S\u00e1nchez-Vergara","sequence":"first","affiliation":[{"name":"Engineering Department, Universidad An\u00e1huac M\u00e9xico, Avenida Universidad An\u00e1huac 46, Col. Lomas An\u00e1huac, Huixquilucan, Estado de M\u00e9xico 52786, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Citlalli","family":"Rios","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones en Materiales, Universidad Nacional Aut\u00f3noma de M\u00e9xico, Circuito Exterior s\/n, Ciudad Universitaria, Coyoac\u00e1n, Ciudad de M\u00e9xico 04510, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Omar","family":"Jim\u00e9nez-Sandoval","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n y de Estudios Avanzados del Instituto Polit\u00e9cnico Nacional, Unidad Quer\u00e9taro, Libramiento Norponiente 2000, Fracc. Real de Juriquilla, Quer\u00e9taro 76230, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roberto","family":"Salcedo","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones en Materiales, Universidad Nacional Aut\u00f3noma de M\u00e9xico, Circuito Exterior s\/n, Ciudad Universitaria, Coyoac\u00e1n, Ciudad de M\u00e9xico 04510, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,12,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"494","DOI":"10.1038\/nmat2459","article-title":"Stretchable active-matrix organic light-emitting diode display using printable elastic conductors","volume":"8","author":"Sekitani","year":"2009","journal-title":"Nat. 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