Organoimido functionalized trinuclear gold(I) clusters with fluorescent chromophore
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Organoimido functionalized trinuclear gold(I) clusters with fluorescent chromophore Chun-Lin Lv, Chen-Huai Yang, Li-Ya Liu*
, Zhi-Cheng Zhang*
Received: 3 June 2020 / Revised: 17 July 2020 / Accepted: 31 July 2020 Ó The Nonferrous Metals Society of China and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The post-functionalization of gold nanoclusters with organic molecules into organic–inorganic hybrid functional materials is an efficient approach to develop multifunctional materials. By introducing 1-pyrenamine and 3-aminofluoranthene into [O(AuPPh3)3][BF4] with a covalent bond, two novel organoimido functionalized trinuclear gold nanoclusters [C16H9N(AuPPh3)3][BF4] (Au3–P) and [C6H4–C10H5N(AuPPh3)3][BF4] (Au3–F) have been successfully obtained. Their structures have been determined by electrospray ionization mass spectroscopy (ESI–MS) and single-crystal X-ray diffraction (SC-XRD), and the photoluminescence properties have been investigated from both experimental and theoretical aspects. It is found that the lowest-energy electronic transitions in the ultraviolet–visible (UV–Vis) absorption Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12598-020-01562-7) contains supplementary material, which is available to authorized users. C.-L. Lv Key Laboratory of Ethnomedicine (Minzu University of China), Ministry of Education, Beijing 100081, China C.-L. Lv School of Pharmacy and Center on Translational Neuroscience, Minzu University of China, Beijing 100081, China C.-H. Yang, Z.-C. Zhang* Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China e-mail: [email protected] L.-Y. Liu* College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China e-mail: [email protected]
spectra of Au3–P (403 nm) and Au3–F (425 nm) exhibit a slight bathochromic shift compared to the corresponding transitions in the spectra of 1-pyrenamine and 3-aminofluoranthene, respectively. In addition, the dichloromethane solutions of Au3–P and Au3–F complexes clearly display blue and yellowish-green fluorescence, respectively. These results will help to design and prepare organic–inorganic nanocluster hybrid luminescent materials for potential applications in (bio)sensors, bioimaging and optoelectronic devices. Keywords Nanoclusters; Gold; Organoimido; Photoluminescence
In the past decades, luminescent materials have shown potential applications in various fields, such as sensors [1–3], probes [4–6], bioimaging [7–9] and medicine [10–12]. So far, various luminescent materials based on organic conjugated molecules and inorganic nanomaterials have been developed [13–15]. Especially, the development of organic–inorganic hybrid luminescent materials that combine unique optical responses of organic chromophores with specific mechanical properties of inorganic moieties
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