Organic Eu3+-complex-anchored porous diatomite channels enable UV protection and down conversion in hybrid material

Xiaoshuang Yu; Lili Li; Yue Zhao; Xinzhi Wang; Yao Wang; Wenfei Shen; Xiaolin Zhang; Yanying Zhang; Jianguo Tang; Olle Inganäs

doi:10.1080/14686996.2020.1799693

Organic Eu3+-complex-anchored porous diatomite channels enable UV protection and down conversion in hybrid material

Sci Technol Adv Mater. 2020 Oct 28;21(1):726-736. doi: 10.1080/14686996.2020.1799693.

Authors

Affiliations

¹ Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, Qingdao, P. R. China.
² Biomolecular and Organic Electronics, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden.

Abstract

The organic Eu³⁺-complex [Eu(TTA)₃Phen] has been incorporated into the channels of surface-modified frustules from diatoms as a key material to absorb and convert UV-photons to visible luminescence. Systematic investigation results indicate that the organic Eu³⁺-complex encapsulated in the functionalized diatomite channels exhibits enhanced luminescence and longer lifetime, owning to the Eu(TTA)₃Phen complex interacting with its surrounding silylating agents. The organic Eu³⁺-complex-anchored porous diatomite hybrid luminescent material was compounded with polyethylene terephthalate (PET) by using a mini-twin screw extruder to prepare a self-supporting film of the hybrid material. Besides, the UV absorption properties of the composite films were investigated. These films will potentially be related to the UV protection of photovoltaic devices.

Keywords: 206 Energy conversion; Organic Eu3+-complex; PET film; diatomite; luminescent hybrid material; recovery; storage; surface modification; transmittance; transport.

Grants and funding

This work was supported by the National Natural Science Foundation of China [51473082]; National Key Research and Development Plan (International Cooperation Key Projects) [2016YFE0110800, 2017YFE0108300]; the National High-end Foreign Expert Project of China, the Program for Introducing Talents of Discipline to Universities (“111” plan), and 1st class discipline program of Materials Science of Shandong Province.