Probing the interaction between the encapsulated water molecule and the fullerene cages in H2O@C60− and H2O@C59N−
| Autor: | Yuan Liu, Qian-Fan Zhang, Lai-Sheng Wang, Yasujiro Murata, Yoshifumi Hashikawa, Guo-Zhu Zhu |
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| Rok vydání: | 2018 |
| Předmět: |
Fullerene
Chemistry Imaging study 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrostatics 01 natural sciences Spectral line 0104 chemical sciences Chemical physics Electron affinity Endohedral fullerene Molecule 0210 nano-technology |
| Zdroj: | Chemical Science. 9:5666-5671 |
| ISSN: | 2041-6539 2041-6520 |
| DOI: | 10.1039/c8sc01031e |
| Popis: | We report a high-resolution photoelectron imaging study of cryogenically-cooled H2O@C60− and H2O@C59N− endohedral fullerene anions. The electron affinity (EA) of H2O@C60 is measured to be 2.6923 ± 0.0008 eV, which is 0.0088 eV higher than the EA of C60, while the EA of H2O@C59N is measured to be 3.0058 eV ± 0.0007 eV, which is 0.0092 eV lower than the EA of C59N. The opposite shifts are found to be due to the different electrostatic interactions between the encapsulated water molecule and the fullerene cages in the two systems. There is a net coulombic attraction between the guest and host in H2O@C60−, but a repulsive interaction in H2O@C59N−. We have also observed low-frequency features in the photoelectron spectra tentatively attributed to the hindered rotational excitations of the encapsulated H2O molecule, providing further insights into the guest–host interactions in H2O@C60− and H2O@C59N−. |
| Databáze: | OpenAIRE |
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