Results 1 to 10 of about 24,892 (304)

Photophysics of 2D Organic–Inorganic Hybrid Lead Halide Perovskites: Progress, Debates, and Challenges

open access: yesAdvanced Science, 2021
2D organic–inorganic hybrid Ruddlesden–Popper perovskites (RPPs) have recently attracted increasing attention due to their excellent environmental stability, high degree of electronic tunability, and natural multiquantum‐well structures.
Zhixing Gan   +2 more
exaly   +2 more sources

Oxygen- and pH-Dependent Photophysics of Fluorinated Fluorescein Derivatives: Non-Symmetrical vs. Symmetrical Fluorination

open access: yesSensors, 2020
Fluorescein, and derivatives of fluorescein, are often used as fluorescent probes and sensors. In systems where pH is a variable, protonation/deprotonation of the molecule can influence the pertinent photophysics.
Ciaran K. McLoughlin   +5 more
doaj   +3 more sources

Thiophene-Based Covalent Organic Frameworks: Synthesis, Photophysics and Light-Driven Applications

open access: yesMolecules, 2021
Porous crystalline materials, such as covalent organic frameworks (COFs), have emerged as some of the most important materials over the last two decades due to their excellent physicochemical properties such as their large surface area and permanent ...
Mario Gutierrez Tovar   +2 more
exaly   +3 more sources

Photophysics of BODIPY Dyes as Readily-Designable Photosensitisers in Light-Driven Proton Reduction

open access: yesInorganics, 2017
A series of boron dipyrromethene (BODIPY) dyes was tested as photosensitisers for light-driven hydrogen evolution in combination with the complex [Pd(PPh3)Cl2]2 as a source for catalytically-active Pd nanoparticles and triethylamine as a sacrificial ...
Maria Wachtler   +2 more
exaly   +3 more sources

Harmonic vector noise-like square pulse in an Er/Yb co-doped fiber laser

open access: yesResults in Optics, 2023
Vector noise-like square pulse (NLSP) has been experimentally observed in an Er/Yb co-doped figure-eight fiber laser. The energy of a single NLSP at the fundamental repetition rate reaches 346.6 nJ.
Huijie Li   +5 more
doaj   +1 more source

Photochemistry and Photophysics of Thienocarbazoles¶ [PDF]

open access: yesPhotochemistry and Photobiology, 2003
Two methylated thienocarbazoles and two of their synthetic nitro-precursors have been examined by absorption, luminescence, laser flash photolysis and photoacoustic techniques. Their spectroscopic and photophysical characterization involves fluorescence spectra, fluorescence quantum yields and lifetimes, and phosphorescence spectra and phosphorescence ...
Melo, J. Seixas de   +5 more
openaire   +4 more sources

Evolution of multiple modified hollow Gaussian beams for the off-axis incident case in highly nonlocal nonlinear media

open access: yesResults in Physics, 2021
We investigate the propagation and evolution of multiple modified hollow Gaussian beams (MHGBs) for the off-axis incident case in highly nonlocal nonlinear media. The propagation expression of the off-axis MHGB is obtained, the evolution characteristics,
Li-Min Song   +5 more
doaj   +1 more source

Tunable Multi-Wavelength Bright-Dark and Dark-Bright Pulse Pairs Fiber Lasers

open access: yesIEEE Photonics Journal, 2020
We have experimentally demonstrated tunable multi-wavelength bright-dark and dark-bright pulse pairs in an all normal dispersion Yb-doped fiber laser (YDFL) with a long cavity configuration.
Yaxing Xin   +5 more
doaj   +1 more source

Lead Sulfide Quantum Dots for Synaptic Transistors: Modulating the Learning Timescale with Ligands

open access: yesAdvanced Intelligent Systems, 2023
One of the emerging paradigms to resolve pressing issues of modern computing electronics, such as limits in miniaturization and excessive energy consumption, takes inspiration from the biological brain and is therefore expected to display some of its ...
Karolina Tran   +3 more
doaj   +1 more source

Determination of the up/down-quark mass within QCD sum rules in the scalar channel

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this work, we determine up/down-quark mass $$m_{q=u/d}$$ m q = u / d in the isoscalar scalar channel from both the Shifman–Vainshtein–Zakharov (SVZ) and the Monte-Carlo-based QCD sum rules.
Fang-Hui Yin   +3 more
doaj   +1 more source

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