Optically Active Upconverting Nanoparticles with Induced Circularly Polarized Luminescence and Enantioselectively
Xue Jin1, Yutao Sang2,3, Yonghong Shi4
1CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication Division of Nanophotonics , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , Beijing 100190 , P. R. China.
Abstract:
In this work, lanthanide-doped upconversion nanoparticles (UCNPs) showing upconverted circularly polarized luminescence were demonstrated in an organic-inorganic co-assembled system. Achiral UCNPs (NaYF4:Yb/Er or NaYF4:Yb/Tm) can be encapsulated into chiral helical nanotubes through the procedure of co-gelation. These co-gel systems display intense upconverted circularly polarized luminescence (UC-CPL) ranging from ultraviolet (UV, 300 nm) to near-infrared (NIR, 850 nm) wavelength. In addition, the UV part of UC-CPL can be used to initiate the enantioselective polymerization of diacetylene.
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