التفاصيل البيبلوغرافية
| العنوان: |
Unraveling the Causes of the Instability of Au n (SR) x Nanoclusters on Au(111) |
| المؤلفون: |
Pilar Carro (1373466), Luis Miguel Azofra (1685089), Tim Albrecht (1274898), Roberto C. Salvarezza (1373481), Evangelina Pensa (1373478) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Sociology, Cancer, Hematology, Infectious Diseases, Computational Biology, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, Information Systems not elsewhere classified, disintegration process, hydrocarbon chain interactions, shell-binding energies, x Nanoclusters, support substrate, thiolate-capped gold nanoclusters, core interactions, AuNC size increases, core-cohesive energy, factors accounting, AuNC disintegration, shell stability, SR, metal nanoclusters, nanotechnological applications |
| الوصف: |
Properties of small metal nanoclusters rely on the exact arrangement of a few atoms. Minor structural changes can rapidly destabilize them, leading to disintegration. Here, we evaluate the energetic factors accounting for the stabilization and integrity of thiolate-capped gold nanoclusters (AuNCs). We found that the core-cohesive and shell-binding energies regulate the disintegration process on a solid substrate by investigating the different energetic contributions, as shown here in a combined experimental and theoretical study. As the AuNC size increases, the core-cohesive energy and shell stability (imposed by S-Au and hydrocarbon chain interactions) counterbalance the AuNC–substrate interaction and slow down the AuNC disintegration. Thus, the decomposition can not only be understood in terms of desorption and transfer of the capping molecules to the support substrate but conversely, as a whole where ligand and core interactions play a role. Taken together, our experimental and theoretical results serve as guidelines for enhancing the stability of AuNCs on solid-state devices, a key point for reliable nanotechnological applications such as heterogeneous catalysis and sensing. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Unraveling_the_Causes_of_the_Instability_of_Au_i_sub_n_sub_i_SR_i_sub_x_sub_i_Nanoclusters_on_Au_111_/14473505 |
| DOI: |
10.1021/acs.chemmater.1c00816.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.chemmater.1c00816.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.15FAA1D9 |
| قاعدة البيانات: |
BASE |