Details

Autor(en) / Beteiligte

• Gan, Zibao
• Liu, Yungui
• Wang, Lin
• Jiang, Shuqing
• Xia, Nan
• Yan, Zhipeng
• Wu, Xiang
• Zhang, Junran
• Gu, Wanmiao
• He, Lizhong
• Dong, Jingwu
• Ma, Xuedan
• Kim, Jaeyong
• Wu, Zhongyan
• Xu, Yixuan
• Li, Yanchun
• Wu, Zhikun

Titel

Distance makes a difference in crystalline photoluminescence

Ist Teil von

• Nature communications, 2020-11, Vol.11 (1), p.5572-5572, Article 5572

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract Crystallization-induced photoluminescence weakening was recently revealed in ultrasmall metal nanoparticles. However, the fundamentals of the phenomenon are not understood yet. By obtaining conformational isomer crystals of gold nanoclusters, we investigate crystallization-induced photoluminescence weakening and reveal that the shortening of interparticle distance decreases photoluminescence, which is further supported by high-pressure photoluminescence experiments. To interpret this, we propose a distance-dependent non-radiative transfer model of excitation electrons and support it with additional theoretical and experimental results. This model can also explain both aggregation-induced quenching and aggregation-induced emission phenomena. This work improves our understanding of aggregated-state photoluminescence, contributes to the concept of conformational isomerism in nanoclusters, and demonstrates the utility of high pressure studies in nanochemistry.