Monocarboxylate-protected two-electron superatomic silver nanoclusters with high photothermal conversion performance
| Autor: | Hao-Hai Wang, Jianyu Wei, Fahime Bigdeli, Farzaneh Rouhani, Hai-Feng Su, Ling-Xiao Wang, Samia Kahlal, Jean-François Halet, Jean-Yves Saillard, Ali Morsali, Kuan-Guan Liu |
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| Přispěvatelé: | Ningxia University, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Tarbiat Modares University [Tehran], Xiamen University, National Institute for Materials Science (NIMS), Laboratory for Innovative Key Materials and Structures (LINK), Saint-Gobain-National Institute of Materials Science-Centre National de la Recherche Scientifique (CNRS), This experimental work was supported by the National Natural Science Foundation of China (Grant No. 92161106), the Natural Science Foundation of Ningxia (Grant No. 2022AAC05017), the Foundation of State Key Laboratory of Physical Chemistry of Solid Surfaces (Grant No. 202013) and Tarbiat Modares University. We are extremely grateful to Wenyan Dan of Tongji University for his help with the crystal structure determination. The French Grand Equipement National de Calcul Intensif is acknowledged for HCP support (Project a0010807367). |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Nanoscale Nanoscale, 2023, 15 (18), pp.8245-8254. ⟨10.1039/d3nr00571b⟩ |
| ISSN: | 2040-3364 2040-3372 |
| DOI: | 10.1039/d3nr00571b⟩ |
| Popis: | International audience; The first series of monocarboxylate-protected superatomic silver nanoclusters was synthesized and fully characterized by X-ray diffraction, fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and electrospray ionization mass spectrometry (ESI-MS). Specifically, compounds [Ag(16)(L)(8)(9-AnCO(2))(12)](2+) (L = Ph(3)P (I), (4-ClPh)(3)P (II), (2-furyl)(3)P (III), and Ph(3)As (IV)) were prepared by a solvent-thermal method under alkaline conditions. These clusters exhibit a similar unprecedented structure containing a [Ag(8)@Ag(8)](6+) metal kernel, of which the 2-electron superatomic [Ag(8)](6+) inner core shows a flattened and puckered hexagonal bipyramid of S(6) symmetry. Density functional theory calculations provide a rationalization of the structure and stability of these 2-electron superatoms. Results indicate that the 2 superatomic electrons occupy a superatomic molecular orbital 1S that has a substantial localization on the top and bottom vertices of the bipyramid. The π systems of the anthracenyl groups, as well as the 1S HOMO, are significantly involved in the optical and photothermal behavior of the clusters. The four characterized nanoclusters show high photothermal conversion performance in sunlight. These results show that the unprecedented use of mono-carboxylates in the stabilization of Ag nanoclusters is possible, opening the door for the introduction of various functional groups on their cluster surface. |
| Databáze: | OpenAIRE |
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