2024-03-28T18:47:44Zhttp://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/239282021-06-23T13:27:52Zcom_10324_1191com_10324_931com_10324_894col_10324_1379
Dante, Roberto C.
Chamorro Posada, Pedro
Vázquez Cabo, José
Rubiños López, Óscar
Sánchez Arévalo, Francisco Manuel
Huerta, Lázaro
Martín Ramos, Pablo
Lartundo Rojas, Luis
Ávila Vega, Carlos Fabián
Rivera Tapia, Edgar David
Fajardo Pruna, Cristian
Ávila Vega, Álvaro J.
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
https://doi.org/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.
Junta de Castilla y León Grant VA089U16
application/pdf
eng
Elsevier
info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 International
Nitrogen-carbon graphite-like semiconductor synthesized from uric acid
info:eu-repo/semantics/article
http://www.sciencedirect.com/science/article/pii/S000862231730564X
SI