000064407 001__ 64407 000064407 005__ 20190709135615.0 000064407 0247_ $$2doi$$a10.1016/j.carbon.2017.05.098 000064407 0248_ $$2sideral$$a103385 000064407 037__ $$aART-2017-103385 000064407 041__ $$aeng 000064407 100__ $$aDante, Roberto C. 000064407 245__ $$aNitrogen-carbon graphite-like semiconductor synthesized from uric acid 000064407 260__ $$c2017 000064407 5060_ $$aAccess copy available to the general public$$fUnrestricted 000064407 5203_ $$aA new carbon-nitrogen organic semiconductor has been synthesized by pyrolysis of uric acid. This layered carbon-nitrogen material contains imidazole-, pyridine (naphthyridine)- and graphitic-like nitrogen, as evinced by infrared and X-ray photoelectron spectroscopies. Quantum chemistry calculations support that it would consist of a 2D polymeric material held together by hydrogen bonds. Layers are stacked with an interplanar distance between 3.30 and 3.36 Å, as in graphite and coke. Terahertz spectroscopy shows a behavior similar to that of amorphous carbons, such as coke, with non-interacting layers. This material features substantial differences from polymeric carbon nitride, with some characteristics closer to those of nitrogen-doped graphene, in spite of its higher nitrogen content. The direct optical band gap, dependent on the polycondensation temperature, ranges from 2.10 to 2.32 eV. Although in general the degree of crystallinity is low, in the material synthesized at 600 °C some spots with a certain degree of crystallinity can be found. 000064407 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000064407 590__ $$a7.082$$b2017 000064407 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b32 / 285 = 0.112$$c2017$$dQ1$$eT1 000064407 591__ $$aCHEMISTRY, PHYSICAL$$b25 / 146 = 0.171$$c2017$$dQ1$$eT1 000064407 592__ $$a2.226$$b2017 000064407 593__ $$aChemistry (miscellaneous)$$c2017$$dQ1 000064407 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000064407 700__ $$aChamorro-Posada, Pedro 000064407 700__ $$aVázquez-Cabo, José 000064407 700__ $$aRubiños-López, Óscar 000064407 700__ $$aSánchez-Árevalo, Francisco M. 000064407 700__ $$aHuerta, Lázaro 000064407 700__ $$0(orcid)0000-0003-2713-2786$$aMartín-Ramos, Pablo$$uUniversidad de Zaragoza 000064407 700__ $$aLartundo-Rojas, Luis 000064407 700__ $$aÁvila-Vega, Carlos F. 000064407 700__ $$aRivera-Tapia, Edgar D. 000064407 700__ $$aFajardo-Pruna, Cristian A. 000064407 700__ $$aÁvila-Vega, Álvaro J. 000064407 700__ $$aSolorza-Feria, Omar 000064407 7102_ $$15011$$2500$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cArea Ingeniería Agroforestal 000064407 773__ $$g121 (2017), 368-379$$pCarbon$$tCarbon$$x0008-6223 000064407 8564_ $$s1191876$$uhttps://zaguan.unizar.es/record/64407/files/texto_completo.pdf$$yPostprint 000064407 8564_ $$s74608$$uhttps://zaguan.unizar.es/record/64407/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000064407 909CO $$ooai:zaguan.unizar.es:64407$$particulos$$pdriver 000064407 951__ $$a2019-07-09-12:25:09 000064407 980__ $$aARTICLE