Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination
ABSTRACT: Lead sulfide (PbS) nanoparticles were synthesized by chemical methods with different sizes and different capping ligands (oleic acid, myristic acid, and hexanoic acid), avoiding ligand exchange procedures, to study the effect of characteristics of the capping ligands on their energy levels and...
| Autores principales: | , , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
2018
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| Acceso en línea: | http://eprints.uanl.mx/17487/1/316.pdf |
| _version_ | 1824414912136347648 |
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| author | García Gutiérrez, Diana Fabiola Hernández Casillas, Laura Patricia Cappellari, Maria Victoria Fungo, Fernando Martínez Guerra, Edgar García Gutiérrez, Domingo Ixcóatl |
| author_facet | García Gutiérrez, Diana Fabiola Hernández Casillas, Laura Patricia Cappellari, Maria Victoria Fungo, Fernando Martínez Guerra, Edgar García Gutiérrez, Domingo Ixcóatl |
| author_sort | García Gutiérrez, Diana Fabiola |
| collection | Repositorio Institucional |
| description | ABSTRACT: Lead sulfide (PbS) nanoparticles were synthesized by chemical methods with different sizes and different capping ligands (oleic acid, myristic acid, and hexanoic acid), avoiding ligand exchange procedures, to study the effect of characteristics of the capping ligands on their energy levels and band gap values. Experimental results (UV−vis−NIR, Fourier transform infrared, and Raman spectroscopies, cyclic voltammetry, transmission electron microscopy, and electron energy loss spectroscopy) showed a marked influence of the capping ligand nature on the electro-optical properties of PbS nanoparticles with a very similar size. Differences were observed in the atomistic arrangement on the nanoparticle surface and phonon vibrations with the different capping ligands. These observations suggest that the electrooptical properties of PbS nanoparticles are not only determined by their size, through quantum confinement effects, but also strongly affected by the atomistic arrangement on the nanoparticle surface, which is determined by the capping ligand nature. |
| format | Article |
| id | eprints-17487 |
| institution | UANL |
| language | English |
| publishDate | 2018 |
| record_format | eprints |
| spelling | eprints-174872021-08-13T13:57:21Z http://eprints.uanl.mx/17487/ Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination García Gutiérrez, Diana Fabiola Hernández Casillas, Laura Patricia Cappellari, Maria Victoria Fungo, Fernando Martínez Guerra, Edgar García Gutiérrez, Domingo Ixcóatl ABSTRACT: Lead sulfide (PbS) nanoparticles were synthesized by chemical methods with different sizes and different capping ligands (oleic acid, myristic acid, and hexanoic acid), avoiding ligand exchange procedures, to study the effect of characteristics of the capping ligands on their energy levels and band gap values. Experimental results (UV−vis−NIR, Fourier transform infrared, and Raman spectroscopies, cyclic voltammetry, transmission electron microscopy, and electron energy loss spectroscopy) showed a marked influence of the capping ligand nature on the electro-optical properties of PbS nanoparticles with a very similar size. Differences were observed in the atomistic arrangement on the nanoparticle surface and phonon vibrations with the different capping ligands. These observations suggest that the electrooptical properties of PbS nanoparticles are not only determined by their size, through quantum confinement effects, but also strongly affected by the atomistic arrangement on the nanoparticle surface, which is determined by the capping ligand nature. 2018-01-11 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/17487/1/316.pdf http://eprints.uanl.mx/17487/1.haspreviewThumbnailVersion/316.pdf García Gutiérrez, Diana Fabiola y Hernández Casillas, Laura Patricia y Cappellari, Maria Victoria y Fungo, Fernando y Martínez Guerra, Edgar y García Gutiérrez, Domingo Ixcóatl (2018) Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination. ACS Omega, 3 (1). pp. 393-405. ISSN 2470-1343 http://doi.org/10.1021/acsomega.7b01451 doi:10.1021/acsomega.7b01451 |
| spellingShingle | García Gutiérrez, Diana Fabiola Hernández Casillas, Laura Patricia Cappellari, Maria Victoria Fungo, Fernando Martínez Guerra, Edgar García Gutiérrez, Domingo Ixcóatl Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination |
| title_full | Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination |
| title_fullStr | Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination |
| title_full_unstemmed | Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination |
| title_short | Influence of the Capping Ligand on the Band Gap and Electronic Levels of PbS Nanoparticles through Surface Atomistic Arrangement Determination |
| title_sort | influence of the capping ligand on the band gap and electronic levels of pbs nanoparticles through surface atomistic arrangement determination |
| url | http://eprints.uanl.mx/17487/1/316.pdf |
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