Article
Nanoscience & Nanotechnology
Huilin He, Mengjia Cen, Jiawei Wang, Yiwei Xu, Jianxun Liu, Wenfeng Cai, Delai Kong, Ke Li, Dan Luo, Tun Cao, Yan Jun Liu
Summary: This study demonstrates strong upconverted circularly polarized luminescence in achiral nanomaterials through plasmonic chiral metasurface-induced optical chirality transfer. By spin-coating core-shell upconversion nanoparticles (UCNPs) on the chiral metasurface, enhanced upconversion luminescence and circular polarization modulation can be achieved.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Huilin He, Mengjia Cen, Jiawei Wang, Yiwei Xu, Jianxun Liu, Wenfeng Cai, Delai Kong, Ke Li, Dan Luo, Tun Cao, Yan Jun Liu
Summary: Strong upconverted circularly polarized luminescence can be achieved from achiral core-shell upconversion nanoparticles (UCNPs) via plasmonic chiral metasurface-induced optical chirality transfer. In the UCNPs-on-metasurface composite, significant enhancement and circular polarization modulation of upconversion luminescence can be achieved, paving new pathways to potential applications in imaging, sensing, and anticounterfeiting fields.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Zhongxing Geng, Yuxia Zhang, Yu Zhang, Yang Li, Yiwu Quan, Yixiang Cheng
Summary: This paper presents a new strategy for circularly polarized luminescence (CPL) organic light-emitting diodes (CP-OLEDs) by inducing achiral fluorophores through helical co-assembly between chiral polymers and an achiral fluorophore. The study demonstrates the achievement of a strong deep blue CPL signal in spin-coated films using this method.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Ya-Jie Wang, Yan Jin, Xiao-Yan Shi, Xi-Yan Dong, Shuang-Quan Zang
Summary: In this study, achiral Cu clusters sensitive to oxygen were coassembled with a chiral amphiphile to form helical nanotubes. The Cu clusters were confined within the nanotubes and exhibited phosphorescence, as well as chiroptical activities such as circular dichroism and circularly polarized phosphorescence. This work provides a facile and universal protocol for designing chiroptical materials based on coinage metal clusters.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Alexandre Homberg, Federica Navazio, Antoine Le Tellier, Francesco Zinna, Alexandre Fuerstenberg, Celine Besnard, Lorenzo Di Bari, Jerome Lacour
Summary: This research successfully synthesized a series of chiral amide-based bis-pyridine substituted polyether macrocycles through a simple two-step synthesis protocol, with one ligand showing efficient complexation with terbium(iii) ions, leading to interesting chiroptical properties observed in absorbance and fluorescence.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Enrico Cavalli, Chiara Nardon, Oliver G. Willis, Francesco Zinna, Lorenzo Di Bari, Silvia Mizzoni, Silvia Ruggieri, Salvatore C. Gaglio, Massimiliano Perduca, Claudio Zaccone, Alessandro Romeo, Fabio Piccinelli
Summary: This study reports the first example of efficient near-infrared Circularly Polarized Luminescence (CPL) in water, achieved by combining a chiral Yb complex with PLGA nanoparticles. The chiral Yb complex exhibits good CPL in organic solvents, and the PLGA nanoparticles protect the metal ion while ensuring its stability and biocompatibility.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yuxia Zhang, Hang Li, Zhongxing Geng, Wen-Hua Zheng, Yiwu Quan, Yixiang Cheng
Summary: Chiral supramolecular assembly can regulate the helical nanofibers to achieve circularly polarized luminescence (CPL) behavior of pyrenyl emitters in achiral liquid crystal polymers. Interestingly, the chiral co-assembly (R/S-M)(0.1)-(P3)(0.9) emitted an inverted blue-colored CPL signal during thermal annealing treatment, which was due to the flexible main chain of the LC polymer (LC-P3).
Article
Chemistry, Multidisciplinary
Letian Xu, Hao Liu, Xiaoluo Peng, Pingchuan Shen, Ben Zhong Tang, Zujin Zhao
Summary: Researchers have developed near ultraviolet circularly polarized luminescent materials with high photoluminescence quantum yields and good circular polarization dissymmetry factors, which can induce circularly polarized electroluminescence from blue to red for achiral materials. By using these materials as emitters, they achieve strong near ultraviolet circularly polarized electroluminescence with the best external quantum efficiencies (eta(ext)s) of 9.0% and small efficiency roll-offs in organic light-emitting diodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xin Wen, Sifan Du, Li Zhang, Minghua Liu
Summary: By using chiral deep eutectic solvents, non-chiral fluorescent molecules can emit circularly polarized luminescence (CPL) with handedness controlled by the molecular chirality of the solvent. This study reveals the important role of the interior structure and hydrogen bond network of chiral deep eutectic solvents in inducing CPL, and demonstrates the possibility of generating full-color and white CPL in such solvents.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jingjing Tong, Yue Cao, Yi-Wen Zhang, Peng Wang, Penglong Wang, Xiang-Ji Liao, Weigang Zhang, Yi Wang, You-Xuan Zheng, Jun-Jie Zhu, Yi Pan
Summary: By adjusting the substituent positions, two chiral luminescent molecules, Cb1 and Cb2, with different properties were obtained. Cb1 showed a deep blue emission peak in n-pentane, while Cb2 exhibited good AIECL property and excellent ECL stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Applied
Minglin Shi, Xiaoyong Chang, Wei Lu
Summary: A series of planar chiral macrocyclic compounds derived from [2.2]-paracyclophane scaffold and helicenes were synthesized and found to exhibit efficient circularly polarized emission. These compounds and helicenes were used as activators in peroxyoxalate chemiluminescence. Compound 2R, which contained electron-donating dimethylamino groups and had the lowest oxidation potential, showed the highest chemiluminescence quantum yield of 0.21% (higher than 0.17% for 9,10-diphenylanthracene at a concentration of 1.0 x 10-4 mol dm-3). Significant circularly polarized chemiluminescence with dissymmetry factors (|gCL|) ranging from 1.4 x 10-3 to 5.4 x 10-3 was observed for these chiral chemiluminescent activators.
Article
Chemistry, Multidisciplinary
Yulian Liu, Zhishan Luo, Yi Wei, Chen Li, Yulin Chen, Xin He, Xiaoyong Chang, Zewei Quan
Summary: By integrating achiral and chiral ligands into zero-dimensional hybrid metal halides (0D HMHs), a efficient strategy to achieve high photoluminescence quantum yield (PLQY) and large dissymmetry factor (g(lum)) is proposed. The synthesized chiral 0D HMHs exhibit near-unity PLQY and large g(lum) values, expanding their applications in chiroptical fields.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Meijun Li, Minghua Liu, Yinlin Sha
Summary: The study demonstrates that the co-assembly of Thioflavin T (ThT) with T1 amyloid fibrils can lead to chiroptical inversion, indicating that the morphological helicity of template fibrils cannot be distinguished solely by the sign of chiroptical spectra of the dye/peptide assemblies.
Article
Chemistry, Physical
Brian Nelson, Liam VandenElzen, Grace Whitacre, Todd A. Hopkins
Summary: Deep eutectic solvents (DES) prepared with a chiral component can lead to new chiral solvents with applications in asymmetric synthesis and chiral light emitting materials. The study found that the chirality of the chiral hydrogen bond donor plays a crucial role in chiral discrimination by the chiral solvent, while the achiral hydrogen bond acceptor also plays a critical role in determining the handedness of the chiral discrimination.
Article
Chemistry, Physical
Kana Matsudaira, Atsushi Izumoto, Yuki Mimura, Yoshiro Kondo, Satoko Suzuki, Shigeyuki Yagi, Michiya Fujiki, Yoshitane Imai
Summary: The study found that optically inactive, paramagnetic Ir(III)(ppy)(3) and Ir(III)(ppy)(2)(acac) showed nearly mirror-symmetric magnetic circularly polarised Luminescence (MCPL) spectra in dilute dichloromethane and dimethyl sulfoxide under N-up and S-up geometries in a 1.6-T magnetic field. However, the MCPL signs of Ir(III)(ppy)(3) and Ir(III)(ppy)(2)(acac) under the same N-up (or S-up) Faraday geometry were opposite to each other when one ppy was replaced with an acac. This ligand exchange approach provides facile control of the MCPL sign, irrespective of the Faraday geometry.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Organic
Tsukasa Usuki, Hikaru Uchida, Kenichiro Omoto, Yoshinori Yamanoi, Ayano Yamada, Munetaka Iwamura, Koichi Nozaki, Hiroshi Nishihara
JOURNAL OF ORGANIC CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Hikaru Koike, Koichi Nozaki, Munetaka Iwamura
CHEMISTRY-AN ASIAN JOURNAL
(2020)
Article
Chemistry, Multidisciplinary
Miki Hasegawa, Daichi Iwasawa, Takuma Kawaguchi, Hikaru Koike, Akira Saso, Shuhei Ogata, Ayumi Ishii, Hitomi Ohmagari, Munetaka Iwamura, Koichi Nozaki
Article
Chemistry, Multidisciplinary
Munetaka Iwamura, Airi Fukui, Koichi Nozaki, Hikaru Kuramochi, Satoshi Takeuchi, Tahei Tahara
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Inorganic & Nuclear
Hiroyoshi Ohtsu, Marie Okuyama, Takeshi Nakajima, Munetaka Iwamura, Koichi Nozaki, Daisuke Hashizume, Masaki Kawano
Summary: By utilizing through-space charge-transfer (TSCT) transitions in coordination networks, we achieved strong luminescence effects, demonstrating an improvement over traditional metal-ligand charge transfer (MLCT) observed in copper complexes.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Daichi Kakizoe, Michihiro Nishikawa, Takuma Ohkubo, Masashi Sanga, Munetaka Iwamura, Koichi Nozaki, Taro Tsubomura
Summary: This study investigated the photophysical properties of Pd(0) complexes, revealing that four-coordinated Pd(0) complexes exhibit blue-yellow emission in the solid state, while three-coordinated Pd(0) complexes display yellow-orange emission. In solution, the three-coordinated complexes show orange emission and exhibit a thermally activated delayed fluorescence mechanism. Both complexes have metal-to-ligand charge-transfer character in their emitting states, but the emission of the tris complex is significantly influenced by a metal-centered d -> p transition.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Mitsuhiko Morisue, Miho Kawanishi, Ikuya Ueno, Takashi Nakamura, Tatsuya Nabeshima, Kouki Imamura, Koichi Nozaki
Summary: The formation of C-F···H-C hydrogen bonds has been a controversial subject, but recent evidence has shown that this interaction can produce an attractive force and effectively restrict torsional rotation in conjugated polymers.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Chemistry, Physical
Pyosang Kim, Andrew J. S. Valentine, Subhangi Roy, Alexis W. Mills, Arnab Chakraborty, Felix N. Castellano, Xiaosong Li, Lin X. Chen
Summary: This study investigated the ultrafast intersystem crossing dynamics of four structurally related platinum(II) dimer complexes and revealed how ligands could fine-tune the potential energy surfaces to influence excited-state trajectories. The results suggest future opportunities in controlling the branching ratio of the dual intersystem crossing pathways through ligand structures.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Hiroki Koizumi, Hiroyuki Chiba, Ayumi Sugihara, Munetaka Iwamura, Koichi Nozaki, Osamu Ishitani
