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2 edition of time-resolved and steady-state study of the photochemistry of benzodifuranone dyes. found in the catalog.

time-resolved and steady-state study of the photochemistry of benzodifuranone dyes.

Paul D. Wood

time-resolved and steady-state study of the photochemistry of benzodifuranone dyes.

by Paul D. Wood

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  • 34 Currently reading

Published by University of Manchester in Manchester .
Written in English


Edition Notes

Thesis (M.Sc.), University of Manchester, Department of Chemistry.

ContributionsUniversity of Manchester. Department of Chemistry.
The Physical Object
Pagination125p.
Number of Pages125
ID Numbers
Open LibraryOL16576521M

To characterize the solvatochromism, fluorescein was extensively explored using absorption, steady-state, and time-resolved fluorescence spectroscopy [6,11,15,16,17,18]. The absorption/emission band shifts exhibited a high dependence on the HBP and dielectric constants of the solvents [13,14,19]. Excited-state properties of three different pyrazine derivatives were probed by emission and transient absorption spectroscopy. They display emission maxima at (4), (5), and nm (6) that are red-shifted with respect to their strong UV ground-state absorption and formed with overall quantum yields ({Phi}) of , , and , ://

  Time-Resolved Spectroscopic and Density Functional Theory Study of the Photochemistry of Irgacure in an Aqueous Solution Mingyue Liu, Ming-De Li, Jiadan Xue, and David Lee Phillips The Journal of Physical Chemistry A (38),   A FluoTime Fluorescence Lifetime and Steady State Spectrometer (Picoquant, GmbH) equipped with an RU micro-channel plate photomultiplier tube (Hamamatsu, Inc.) was used for time-resolved measurements. A custom-made front-face attachment was used to measure the solid indole in PVA ://

Proc. SPIE , 5th International Conference on Laser Applications in Life Sciences, pg (2 January ); doi: /   Book Cover. 1) Krumova, K.; Cosa, G.; Overview of Reactive Oxygen Species. In "Singlet Oxygen: Applications in Biosciences and Nanosciences" Nonell, S.; Clors, C


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Time-resolved and steady-state study of the photochemistry of benzodifuranone dyes by Paul D. Wood Download PDF EPUB FB2

Fluorescent carbon dots (C-dots) have been found to be a new class of nanomaterial for potential applications. Herein, polyethylenimine branched (BPEI) functionalized carbon dots (C-dots) are synthesized by changing the synthesis time using a microwave pyrolysis method.

The photoluminescence intensity and average d   Effect of p-Cyclodextrin Complexation on the Photochemical and Photosensitizing Properties of Tolmetin: A Steady-State and Time-Resolved Study S. Sortino, J.

Scaiano, G. De Guidi, S. Monti Photochemistry and Photobiology 70 (4),   We study steady-state and time-resolved fluorescence of 5-cyanonaphthol in various pure solvents. To some of these, excited-state proton transfer occurs within the excited-state lifetime of the chromophore.

Solvatochromic shifts in the acid and anion bands are analyzed using the empirical Kamlet−Taft approach. The hydrogen-bond donated from the OH group to basic solvents accounts for (time - resolved crystallography) to gain an in - depth understanding of photoreactions in the crystalline state.

Challenges are many, yet this may be one of the few options we currently have to get an insight into what happens in pico - and nano - second time scales when molecules are excited in the crys-talline ://   Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all Steady‐state and time‐resolved fluorescence study of some dyes in polymer microspheres showing morphology dependent resonances in Progress in Photochemistry and Photophysics, edited by J.

Rabek Combined analysis of spectrophotometric, steady-state and time-resolved fluorescence results provided x 10(5) M-1 for the equilibrium constant of ion pairing with Cl- in :// A modified phase modulation spectro-fluorometer has been designed specifically for detection of both time resolved and steady state circular dichroism.

A microfluorimeter for studying nonstationary dynamics of excimer formation in two- dimensional fluids has been used for the study   CiteScore: ℹ CiteScore: CiteScore measures the average citations received per peer-reviewed document published in this title.

CiteScore values are based on citation counts in a range of four years (e.g. ) to peer-reviewed documents (articles, reviews, conference papers, data papers and book chapters) published in the same four calendar years, divided by the number of   The steady-state approximation is inapplicable under conditions of time-dependent excitation.

If a very short laser pulse is used to produce the excited species (so-called -pulse excitation) the light absorption rate W can be neglected and Eq.(3) is easily integrated:   Steady-state and time-resolved studies on oxetane cycloreversion using (thia) pyrylium salts as electron transfer photosensitizers Organic Letters, 3, () Pyrylium salt-photosensitized degradation of phenolic contaminants derived from cinnamic acid with solar light.

Correlation of the observed reactivities with fluorescence   The photophysical properties of Anthrylacrylic ester were investigated in various solvents using steady-state and time-resolved fluorescence techniques. The dual fluorescence was observed in various solvents of different polarity functions.

The emission bands observed are around nm (band I) and nm (band II) for nm and nm excitation at low concentrations (10–5 moldm–3) but Abstract— We have studied the time‐resolved and the steady‐state fluorescence of the DNA groove binders 4',6‐diamidino‐2‐phenylindole (DAPI) and Hoechst with the double stranded DNAs poly(dA‐dU) and poly(dl‐dC) and their halogenated analogs, poly(dA‐FdU) and poly(dI‐Br 5 dC).

These studies were prompted by earlier observations that the steady‐state fluorescence of Steady State and Time Resolved Spectroscopic Study of QD-DNA Interaction: Bipattaran Paramanik, Santanu Bhattacharyya, Amitava Patra, () Journal of luminescence, DOI: / Zhang J, Roek. DP, Chateauneuf JE, Brennecke JF.

A steady-state and time-resolved fluorescence study of quenching reactions of anthracene and 1,2-benzanthracene by carbon tetrabromide and bro-moethane in supercritical carbon dioxide.

J Am   Prof. Valeur's research interests are in the fields of photophysics and photochemistry. He has been currently using steady-state and time-resolved fluorescence techniques for investigating polymers, microemulsions, supramolecular systems including multichromophoric cyclodextrins and   Computational Study of Non-Covalent Complexes Between Formamide and Formic Acid E.

Sánchez-García, L. Montero, W. Sander, J. Phys. Chem. () – A Time-Resolved Infrared Study on the Photochemistry of O-Fluoroformyl- and O-Chlorooxalylfluorenone Oxime: The Reactivity of the Fluoroformyl Radical in Acetonitrile The formation of luminescent aggregates of two pyrazolotriazole azamethine dyes in bulk solutions and at hydrated glass surfaces has been investigated using steady-state and time-resolved fluorescence spectroscopy as well as evanescent wave-induced fluorescence spectroscopy (EWIFS).

Bulk measurements of dye A in me Steady state techniques usually involve the measurement of spectra (Figure 1a) giving information concerning energy, while time-resolved methods relate to the length of time that a molecule spends in the excited state.

From the excited state, it is possible for the molecule to return to the ground state vibrationally (non-radiative) or by   Research area: photophysics and photochemistry by steady-state and time-resolved spectrophotometric and fluorimetric techniques.

Research units. Photobehaviour of drugs – Studies on photophysical and photochemical properties of compounds of pharmaceutical and biological interest and on interactions of drugs with biological targets (polynucleotides, proteins and DNA) A small degree of ground-state complexation was observed for receptor 8a and by Z-Trp-OH (upward curvature in the Stern–Volmer plot).

Complementary 1 H-NMR titrations demonstrated the existence of such a weak ground state ://. Picosecond time-resolved and steady-state studies of the polarization of the fluorescence of C 60 and C 70, A.

Fedorov, M.N. Berberan-Santos, J.-P. Lefèvre, B. Valeur, Chemical Physics Letters ()   The compounds are: a series of fluorescent dyes, organic oxidizers, organic and inorganic heavy-atom containing compounds, and metallic salts.

Applications of fluorescence time-resolved and steady-state techniques, as well as bioluminescence kinetics study, are ://The transfer and trapping of excitation energy in photosynthetic purple bacteria, as it appears from time-resolved and steady-state spectroscopy, are discussed.

As a background to the dynamics we first briefly describe the structure and organization and spectroscopy of purple bacterial antenna ://