Results 21 to 30 of about 1,706,590 (302)

Ultrafast photophysical studies of sulfonated polyaniline in aqueous medium by femtosecond transient absorption spectroscopy [PDF]

open access: yes, 2022
In our previous work (Khatun et al., J. Phys. Chem. A 122 (2018) 7089-7098), synthesis and characterization of sulfonated polyaniline (SPANI) were discussed.
Rijia, Khatun   +2 more
core   +1 more source

Small Polaron Hopping in Fe:LiNbO3 as a Function of Temperature and Composition

open access: yesCrystals, 2018
Small-polaron hopping involved in charge transport in Fe-doped congruent lithium niobate is investigated as a function of temperature and composition by means of light-induced transient absorption spectroscopy.
Laura Vittadello   +3 more
doaj   +1 more source

Tailoring photoluminescence of WS2-microcavity coupling devices in broad visible range

open access: yesNanophotonics, 2023
Most of the previous TMDC-photon coupling devices were mainly based on A exciton due to its high oscillator strength and large exciton binding energy. Less effort has been focused on the modulation of the emission of B exciton and Rydberg states in TMDCs,
Zhao Le-Yi   +5 more
doaj   +1 more source

Monitoring the photochemistry of a formazan over 15 orders of magnitude in time

open access: yesFrontiers in Chemistry, 2022
2,3,5-triphenyltetrazolium chloride (TTC) may convert into phenyl-benzo[c]tetrazolocinnolium chloride (PTC) and 1,3,5-triphenylformazan (TPF) under irradiation with light.
Svenja Wortmann   +2 more
doaj   +1 more source

Ultrafast Electronic Deactivation Dynamics of Xanthosine Monophosphate

open access: yesMolecules, 2017
Ultrafast energy dissipation is a crucial factor for the photostability of DNA and RNA, but even some of the key electronic deactivation pathways in monomeric nucleic acid building stones are still controversial.
Katharina Röttger   +3 more
doaj   +1 more source

Photophysical Studies of Poly(3,4-Ethylenedioxythiophene/Cucurbit[7]uril) Polypseudorotaxane and Polyrotaxane by Transient Absorption and Time-Resolved Fluorescence Spectroscopy

open access: yesEngineering Proceedings, 2022
The UV-Vis absorption, fluorescence, and phosphorescence spectra of poly(3,4-ethylenedioxythiophene/cucurbit[7]uril), polypseudorotaxane (1), and polyrotaxane (2) in water and acetonitrile solutions were investigated. To achieve a deeper insight into the
Radu Ionut Tigoianu, Aurica Farcas
doaj   +1 more source

Adaptive noise canceling for transient absorption microscopy [PDF]

open access: yesJournal of Biomedical Optics, 2020
Ultrafast fiber lasers are an attractive alternative to bulk lasers for nonlinear optical microscopy for their compactness and low cost. The high relative intensity noise (RIN) of these lasers poses a challenge for pump-probe measurements such as transient absorption and stimulated Raman scattering, along with modalities that provide label-free ...
Wang, Erkang   +2 more
openaire   +2 more sources

Direct Mapping of Curve-Crossing Dynamics in IBr by Attosecond Transient Absorption Spectroscopy [PDF]

open access: yes, 2019
The electronic character of photoexcited molecules can abruptly change at avoided crossings and conical intersections. Here, we report direct mapping of the coupled interplay between electrons and nuclei in a prototype molecule, iodine monobromide (IBr)
Daniel, Neumark   +4 more
core   +1 more source

Dynamic Model for Small-Scale Ammonia-Water Absorption Chiller [PDF]

open access: yes, 2012
Optimization of the performance of absorption systems during transient operations such as start-up and shut-down to minimize lifetime costs is particularly important for small-capacity chillers and heat pumps.
Garimella, Srinivas   +3 more
core   +1 more source

Dynamic Microscopy Study of Ultrafast Charge Transfer in a Hybrid P3HT/Hyperbranched CdSe Nanoparticle Blend for Photovoltaics [PDF]

open access: yes, 2012
We present a spectroscopic investigation on a new hyperbranched cadmium selenide nanocrystals (CdSe NC)/poly(3-hexylthiophene) (P3HT) blend, a potentially good active component in hybrid photovoltaics. Combined ultrafast transient absorption spectroscopy
Polli, Dario   +28 more
core   +1 more source

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