Recent Advances of Circularly Polarized Luminescence in Photon Upconversion Systems

Abstract

Institute of Chemistry, Chinese Academy of Sciences (CAS) in 2011 with Prof. Minghua Liu. From 20112015, he was a postdoctoral research fellow with Prof. Nobuo Kimizuka at the Kyushu University, working on photon upconversion in self-assembled systems. In 2015, he became a professor in National Center for Nanoscience and Technology (NCNST). His current research interests focus on photochemistry and physics in supramolecular systems. Chengxi Li obtained his B.Sc. degree in polymer materials and engineering from Xiangtan University, China. In 2018, he enrolled in a direct Ph.D. course at the University of Chinese Academy of Sciences, under the supervision of Prof. Pengfei Duan, where he is presently in his third year. His current research includes chiral self-assembly and chiroptical materials.

Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

“…Considering the polarization of light, upconverted circularly polarized luminescence can be obtained by modulating the polarization state of upconverted luminescence (Fig. 11e) 293 . In general, CPL displays the chiroptical properties of chiral luminescent system at the excited state; therefore, higherenergy excitation is needed in most of the developed chiral nanomaterials.…”

“…Reproduced with permission from ref. 293 . Copyright 2021, The Chemical Society of Japan gap energy of the emitters can be utilized 294,295 .…”

“…e Schematic representation for multi-dimension information involved in chiral upconversion nanomaterials, including the CPL signal, the wavelength of emission, and excitation in photon upconversion. Reproduced with permission from ref 293. .…”

Recent Advances in the Photoreactions Triggered by Porphyrin-Based Triplet–Triplet Annihilation Upconversion Systems: Molecular Innovations and Nanoarchitectonics

“…Many related issues have been widely investigated, such as how to improve upconversion efficiency [ 50 , 51 ], how to overcome oxygen quenching [ 52 , 53 ], and how to achieve solid-state applications [ 54 , 55 , 56 , 57 , 58 ]. Furthermore, a great many TTA-UC-based examples for practical applications have also emerged, including solar cells [ 59 , 60 ], bioimaging [ 61 , 62 ], circularly polarized luminescence [ 63 , 64 , 65 ], sensing [ 66 , 67 ], and photoreactions [ 31 ]. Especially for photoreactions triggered by porphyrin-based TTA-UC systems, great achievements of molecular innovations and nanoarchitectonics [ 68 ] have been witnessed in the past few years.…”

The preparation and properties of circularly polarized luminescent liquid crystal physical gels with self-supporting performance

“…Some effective methods to improve the g lum value have been reported: (1) CPL enhanced by assembly/aggregationenhanced; [11][12][13][14] (2) CPL enhanced by plasmon resonance; 15 (3) CPL enhanced by Fo ¨rster resonance energy transfer; 16,17 (4) CPL enhanced by photon upconversion based on triplet-triplet annihilation; 18,19 (5) CPL enhanced by chiral liquid crystals; [20][21][22][23] (6) CPL enhanced by an achiral component. 24 Among these methods, chiral liquid crystals have attracted attention because of their great advantages in the construction of CPL materials with large g lum values.…”