Nano-luminescent material: research hotspots, core patents, and major patentee mining based on social network analysis

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RESEARCH PAPER

Nano-luminescent material: research hotspots, core patents, and major patentee mining based on social network analysis Tingwei Zhao · Xiuzhu Zhu · Minghan Sun

Received: 16 June 2020 / Accepted: 7 July 2020 © Springer Nature B.V. 2020

Abstract The surge in patents has dramatically increased the difficulty of obtaining real technical features through patent analysis. In this article, from the macro-, meso-, and microperspectives of the knowledge structure in the field of nano-luminescent materials, patent information is captured by making full use of social networks. In the first place, vital patents in the field of nano-luminescent materials are selected; and then the main patentees and the application of the nano-luminescent material patents are found, thereby helping researchers explore direction of prospective research, and assisting governments to formulate R&D strategy in the field of nano-luminescent materials. At the same time, from the perspective of patents, this research not only enriches the methods of technical analysis but has reference value for patent analysis of other technologies. Keywords Nano-luminescent materials · Patent layout · Patent strategy · Social network analysis T. Zhao · X. Zhu · M. Sun () School of Management, Huazhong University of Science and Technology, Wuhan, 430074, China e-mail: [email protected] T. Zhao · X. Zhu · M. Sun Sino-European Institute for Intellectual Property, Huazhong University of Science and Technology, Wuhan, 430074, China

Introduction At present, human beings are confronted with severe challenges in the fields of energy, environment, as well as health. Efficient nano-luminescent materials are conducive to solving the problems (Vollath et al. 2004). In terms of energy, the external quantum efficiency of organic light-emitting diodes made with AIE materials can be as high as 20%, well above the efficiency of “traditional” organic lightemitting diode devices (up to about 5%). As a result of low energy consumption, organic light-emitting diode devices are made with AIE materials, which are equipped with bright application prospects (Zingg and Fischer 2018). In the field of environmental protection, especially in water pollution monitoring besides treatment, AIE plays a significant role as well. Due to water-soluble AIE materials, trace contaminants (mercury, cadmium, cyanide, etc.) can be easily specifically extracted. In the health aspect, AIE probes are efficiently in position to identify cancer cells or malignant tumors so that doctors contribute to accurately removing tumor tissue (Roco et al. 2011). However, nano-luminescent materials are relatively advanced research, and most of their patents belong to scientific research institutes in universities, which result in a certain obstacles to apply new nano-luminescent materials to industry (Maebius 2002). Industryuniversity-research collaboration plays a momentous

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role in the technological innovation system, but the low level of cooperation and the difficulty in establ