Results 191 to 200 of about 156,775 (308)

Halide Defect Passivation in CsPbBr3 Nanocrystals Mediated by the Friedel–Crafts Reaction: Enhanced PLQY and Structural Stability Without Bandgap Modulation

Advanced Optical Materials, EarlyView.
Post‐treatment of CsPbBr3 nanocrystals with an AlBr3/CH2Br2 solution does not induce Al3+ substitution at Pb2+ sites. Instead, a Friedel–Crafts reaction generates Br− ions that passivate halide defects, markedly increasing PLQY and improving structural stability without bandgap modulation.
Hyunsoo Oh, Dokyum Kim, Sang‐Youp Yim, Ha Sul Kim, Chang‐Lyoul Lee   +4 more
wiley   +1 more source

Molecular Precursor Engineering of Lignin-Derived Carbon Dots for Multicolor Fluorescence and Metal-Ion Sensing. [PDF]

Nanomaterials (Basel)
Ma B, Wei H, Tan J, Chen L, Liang M, Qiu X.   +5 more
europepmc   +1 more source

Electrically Reconfigurable Optical Initialization of Spin Valley Polarization in Monolayer WS2 Enabled by Switchable Dual‐Mode Liquid Crystal Lasers

Advanced Optical Materials, EarlyView.
This work presents an electrically controllable approach to spin–valley polarization in monolayer WS2 by integrating it with a dual‐mode liquid crystal laser. Applying an external field triggers phase transitions that switch the laser emission between helicity‐defined band‐edge lasing and unpolarized random lasing.
Yu‐Chuan Tsao, Ya‐Ping Hsieh, Yang‐Fang Chen, Hui‐Yu Chen   +3 more
wiley   +1 more source

Light-Driven Iodine Loss and Photoluminescence Homogenization in Mixed-Halide Perovskite Semiconductors. [PDF]

J Phys Chem C Nanomater Interfaces
Lebowitz MJ, Gomez A, Cotts BL, Stranks SD, Salleo A, Belisle RA.   +5 more
europepmc   +1 more source

Bright‐Dark Exciton Splitting in Lead Iodide Perovskite Crystals Accessed via Quantum Beats in Photon Echoes

Advanced Optical Materials, EarlyView.
Understanding exciton fine structure is crucial for optoelectronic and quantum photonic applications of lead halide perovskites. It is demonstrated that polarization‐sensitive photon‐echo spectroscopy in a magnetic field resolves exciton fine‐structure splittings hidden by inhomogeneous broadening, enabling direct determination of the bright‐dark ...
M. Alex Hollberg, Mikhail O. Nestoklon, Artur V. Trifonov, Stefan Grisard, Oleh Hordiichuk, Dmitry N. Dirin, Maksym V. Kovalenko, Dmitri R. Yakovlev, Manfred Bayer, Ilya A. Akimov   +9 more
wiley   +1 more source

Integrating Fluorescence from Self-Trapped Excitons and Phosphorescence in Zero-Dimensional Metal Halides for Time-Resolved Dynamic Information Encryption. [PDF]

Nanomaterials (Basel)
Zhu X, Li L, Wen F, Wang Y, Xu Y, Wang Z, You C, Chen Q, Xu L, Ye J, Song J, Qiu N, Feng Y, He T, Jia H, Chen Q.   +15 more
europepmc   +1 more source

Ligand‐Dependent Locally Excited and Charge‐Transfer Emission in Linear Copper(I) Mesoionic Carbene Luminophores

Advanced Optical Materials, EarlyView.
Ligand engineering enables precise control of emission in linear Cu(I) complexes by tuning donor–acceptor interactions between electron‐rich amines and π‐accepting mesoionic carbenes. Naphthyl‐substituted carbenes promote locally excited phosphorescence with vibronic structure, whereas electron‐rich amides combined with electron‐poor carbenes favor ...
Felix León, Changfeng Si, Chenfei Li, Adisak Thanetchaiyakup, Thomas V. Papineau, Denis Jacquemin, Eli Zysman‐Colman, Han Sen Soo   +7 more
wiley   +1 more source

N-coordination-driven anchoring of M₂ dimers (M = Cu, Ag) on Au₆ cluster: structural evolution and enhanced photoluminescence. [PDF]

Chem Sci
Shichibu Y, Yamada K, Itakura H, Morita H, Xu L, Konishi K.   +5 more
europepmc   +1 more source

Photoluminescence of ZnO Nanostructure Formed by Laser Radiation

The possibility of formation of ZnO nanostructures in polyvinylalcohol matrix by powerful laser radiation is studied in this ...
Andersone, D., Mežinskis, Gundars, Medvids, Artūrs, Onufrijevs, Pāvels, Grigorjeva, L.   +4 more
core  

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source