Results 81 to 90 of about 174,035 (261)

Two-photon-absorption and upconverted superradiance properties of organic dye HEASPS-doped linear homogeneous polymer at several wavelengths

, 2002
The spectral and temporal properties of single- and two-photon fluorescence of a dye-doped linear homogeneous polymer are reported. The dopant is a new organic dye, trans-4-p-(N-hydroxyethyl-N-ethylamino)styryl-N-methylpyridinium p-toluene sulfonate ...
Xiaoquiang Yu (19124389), Dong Wang (73290), Yan Ren (149348), Zongshu Shao (19124392), Xiufeng Cheng (1448872), Guangyong Zhou (3971711), Xiaomei Xu (484503), Minhua Jiang (2104591)   +7 more
core   +1 more source

Two- and one-photon absorption spectra of aqueous thiocyanate anion highlight the role of symmetry in condensed phase

, 2023
Calculation of the two-photon (2PA) absorption spectrum of aqueous thiocyanate using high-level quantum-chemistry methods is presented. The 2PA spectrum is compared to the 1PA spectrum computed using the same computational protocol.
Anna I., Krylov, Kaushik , Nanda, Ronit, Sarangi   +2 more
core   +1 more source

High‐Index, Low‐Loss Optical Material Platforms for Ultra‐Broadband Ultraviolet‐to‐Visible Achromatic Metalenses

Advanced Functional Materials, EarlyView.
An integrated material platform combining engineered SiNx thin films and printable ZrO2 nanoparticle‐embedded resin enables broadband achromatic metalenses from the ultraviolet to visible range. The demonstrated meta‐optics achieve near‐diffraction‐limited focusing with minimal chromatic aberration.
Hyunjung Kang, Dongmin Jeon, Eunji Lee, Junsuk Rho   +3 more
wiley   +1 more source

Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita, Lucas R. L. Norg, Patrick Diederen, Clint van Hoesel, Christ H. L. Weijtens, Peter A. Bobbert, Reinder Coehoorn   +6 more
wiley   +1 more source

Fluorescent phosphorus dendrimers excited by two photons: synthesis, two-photon absorption properties and biological uses

Beilstein Journal of Organic Chemistry, 2019
Different types of two-photon absorbing (TPA) fluorophores have been synthesized and specifically functionalized to be incorporated in the structure of phosphorus dendrimers (highly branched macromolecules).
Anne-Marie Caminade, Artem Zibarov, Eduardo Cueto Diaz, Aurélien Hameau, Maxime Klausen, Kathleen Moineau-Chane Ching, Jean-Pierre Majoral, Jean-Baptiste Verlhac, Olivier Mongin, Mireille Blanchard-Desce   +9 more
doaj   +1 more source

Synthesis, as well as linear and nonlinear fluorescence properties of 5, 5’-bis(4-N-carbazolylstyryl)-2, 2’-bithiophene [PDF]

Journal of the Serbian Chemical Society, 2004
Anew bithiophene-based organic luminescence material, named 5,5’-bis(4-N-carbazoylstyryl)- 2,2’-bithiophene (BCSBT), was synthesized. Its single-photon excited fluorescence band is located in the range of 520–530 nm, with a quantum yield of around 10 ...
Xia Guang-Ming, Lu Ping, Xu Gui-Bao
doaj   +1 more source

Polymerization Photoinitiators with Near-Resonance Enhanced Two-Photon Absorption Cross-Section: Towards High-Resolution Photoresists with Improved Sensitivity

, 2020
Synthesis of novel photoinitiators, spectroscopic (UV vis, fluorescence, steady state and time resolved), electrochemical and EPR studies of their photoinduced radical generation mechanisms, Z-scan measurements of their two-photon absorption cross ...
Patrice L., Baldeck, Chantal, Andraud, Caroline, Arnoux, Cyrille, Monnereau, Eric Aymé, Poutougnigni, tatsuki, konishi, jean-christophe, Mulatier, Ákos, Bányász, Kenji, Kamada, Elise, Dumont, Lhoussain, Khrouz, Christophe, Bucher, Emma, Van Elslande   +12 more
core   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

Chlorination‐Enabled Oxygen Control and Dual‐Sulfur Source Aided Trap Passivation to Unlock 8.24% Efficient Sb2S3 Photovoltaic Devices

Advanced Functional Materials, EarlyView.
This work demonstrates a scalable, low‐temperature synthesis strategy that combines a thioacetamide (TA)‐based dual sulfur source with CdS chlorination, enabling the formation of high‐quality Sb2S3 with a reduced open‐circuit voltage loss, resulting in improved device efficiency.
Vijay C. Karade, Namuna Adhikari, Samietha S. Kumar, Alisha Adhikari, Vamsi Borra, Prabodika N. Kaluarachchi, Tingting Zhu, Tyler Brau, Rohini Kanase, Ebin Bastola, Xavier Mathew, Abasi Abudulimu, Adam B. Phillips, Michael J. Heben, Zhaoning Song, Yanfa Yan, Randy J. Ellingson   +16 more
wiley   +1 more source

Interplay Between Phase Evolution, Fe Migration, and Oxygen Redox in O3‐Type NaxFeyMn1−yO2 Cathodes

Advanced Functional Materials, EarlyView.
Why do Na‐ion battery cathodes, that are compositionally closely related, follow different structural paths during battery operation? This work shows how Fe content controls when iron atoms migrate from their original sites. Early migration locks the layers and blocks key phase transitions, whereas delayed migration permits fuller structural ...
Morten Johansen, Maria Schou Hansen, Josephine Dunker, Rebekka Klemmt, Dorthe B. Ravnsbæk   +4 more
wiley   +1 more source