2026-04-27T23:23:46Zhttps://uvadoc.uva.es/oai/request
oai:uvadoc.uva.es:10324/239282025-03-26T19:10:03Zcom_10324_1191com_10324_931com_10324_894col_10324_1379
UVaDOC author Dante, Roberto C. author Chamorro Posada, Pedro author Vázquez Cabo, José author Rubiños López, Óscar author Sánchez Arévalo, Francisco Manuel author Huerta, Lázaro author Martín Ramos, Pablo author Lartundo Rojas, Luis author Ávila Vega, Carlos Fabián author Rivera Tapia, Edgar David author Fajardo Pruna, Cristian author Ávila Vega, Álvaro J. author Solorza Feria, Omar 2017-06-23T15:40:30Z 2017-06-23T15:40:30Z 2017 Carbon, Septiembre 2017, vol. 121, 368–379 http://uvadoc.uva.es/handle/10324/23928 10.1016/j.carbon.2017.05.098 Nitrogen-carbon graphite-like semiconductor synthesized from uric acid A 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, the material synthesized at 600 °C is composed of globular hollow particles, in which spots with a certain degree of crystallinity can be found. eng Attribution-NonCommercial-NoDerivatives 4.0 International Nitrogen-carbon graphite-like semiconductor synthesized from uric acid info:eu-repo/semantics/article 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URL https://uvadoc.uva.es/bitstream/10324/23928/1/Carbon%20manuscript.pdf File MD5 01cd8e643b9547f1d708240f0120ee4b 1836800 application/pdf Carbon manuscript.pdf