Concomitant Near‐Infrared Photothermy and Photoluminescence of Rod‐Shaped Au52(PET)32 and Au66(PET)38 Synthesized Concurrently

Author:

Gu Wanmiao123,Zhou Yue123,Wang Wenying123,You Qing123,Fan Wentao123,Zhao Yan123,Bian Guoqing123,Wang Runguo123,Fang Liang123,Yan Nan123,Xia Nan123,Liao Lingwen123,Wu Zhikun123ORCID

Affiliation:

1. Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics HFIPS Chinese Academy of Sciences 230031 Hefei P. R.China

2. Key Laboratory of Precision and Intelligent Chemistry University of Science and Technology of China 230026 Hefei P. R.China

3. Institute of Physical Science and Information Technology Anhui University 230601 Hefei P. R.China

Abstract

AbstractGold nanoclusters exhibiting concomitant photothermy (PT) and photoluminescence (PL) under near‐infrared (NIR) light irradiation are rarely reported, and some fundamental issues remain unresolved for such materials. Herein, we concurrently synthesized two novel rod‐shaped Au nanoclusters, Au52(PET)32 and Au66(PET)38 (PET = 2‐phenylethanethiolate), and precisely revealed that their kernels were 4 × 4 × 6 and 5 × 4 × 6 face‐centered cubic (fcc) structures, respectively, based on the numbers of Au layers in the [100], [010], and [001] directions. Following the structural growth mode from Au52(PET)32 to Au66(PET)38, we predicted six more novel nanoclusters. The concurrent synthesis provides rational comparison of the two nanoclusters on the stability, absorption, emission and photothermy, and reveals the aspect ratio‐related properties. An interesting finding is that the two nanoclusters exhibit concomitant PT and PL under 785 nm light irradiation, and the PT and PL are in balance, which was explained by the qualitative evaluation of the radiative and non‐radiative rates. The ligand effects on PT and PL were also investigated.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Anhui Province

Youth Innovation Promotion Association of the Chinese Academy of Sciences

China Postdoctoral Science Foundation

Publisher

Wiley

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