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Auteur : Grafiati
Publié le 11 mars 2023

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1

Niedzwiedzki, Dariusz M., Mojgan Kouhnavard, Yifan Diao, Julio M. D'Arcy et Pratim Biswas. « Spectroscopic investigations of electron and hole dynamics in MAPbBr3 perovskite film and carrier extraction to PEDOT hole transport layer ». Physical Chemistry Chemical Physics 23, no 23 (2021) : 13011–22. http://dx.doi.org/10.1039/d1cp00658d.

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Characterization of photophysical properties of MAPbBr3 perovskite film with application of various static and time-resolved spectroscopies and evaluation of hole extraction process in the FTO/RVPP-PEDOT/MAPbBr3 architecture.
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2

Curtright, Aimee E., et James K. McCusker. « Static and Time-Resolved Spectroscopic Studies of Low-Symmetry Ru(II) Polypyridyl Complexes ». Journal of Physical Chemistry A 103, no 35 (septembre 1999) : 7032–41. http://dx.doi.org/10.1021/jp9919415.

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3

Rastogi, Vinay, Usha Rao, Shivanand Chaurasia, Chakkalakkal Davis Sijoy, Vinayak Mishra, Shashank Chaturvedi et Mukul Narayan Deo. « Time-Resolved Vibrational Spectroscopy of Polytetrafluoroethylene Under Laser-Shock Compression ». Applied Spectroscopy 71, no 12 (11 août 2017) : 2643–52. http://dx.doi.org/10.1177/0003702817726542.

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Shock-wave-induced high pressure and nanosecond time-resolved Raman spectroscopic experiments were performed to examine the dynamic response of polytetrafluoroethylene (PTFE) in confinement geometry targets. Time-resolved Raman spectroscopy was used to observe the pressure-induced molecular and chemical changes on nanosecond time scale. Raman spectra were measured as a function of shock pressure in the 1.2–2.4 GPa range. Furthermore, the symmetric stretching mode at 729 cm–1 of CF2 was compared to corresponding static high-pressure measurements carried out in a diamond anvil cell, to see if any general trend can be established. The symmetric stretching mode of CF2 at 729 cm–1 is the most intense Raman transition in PTFE and is very sensitive to change in pressure. Therefore, it can also be utilized as a pressure gauge for large amplitude shock wave compression experiments. A maximum blueshift of 12 cm–1 for the 729 cm–1 vibrational mode has been observed for the present experimental pressure range. A comparative study on the similarities and differences from the earlier work has been done in detail. One-dimensional radiation hydrodynamic simulations were performed to validate our shock compression results and are in very good agreement.
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Thekku Veedu, Sreevidya. « Ultrafast Dynamical Study Using Time-resolved Laue Diffraction ». Acta Crystallographica Section A Foundations and Advances 70, a1 (5 août 2014) : C766. http://dx.doi.org/10.1107/s205327331409233x.

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Electron transfer reactions are fundamental processes in chemistry and also in biology [1-3]. Light harvesting complexes are functional centers in plants where sunlight is converted into chemical energy. In this, optical excitation in a chromophore unit leads to the transfer of electrons within the system. However, due to the complexity of the biological photo-reaction centre, recent spectroscopic efforts have concentrated on a smaller chemical model which share characteristic with their biological counter parts. A promising model is the so-called D-A (donor-acceptor) systems, which are chemically synthetic molecules with electron transfer capabilities. The electrical conductivity is a function of the optical state of the system. An optically switching diode is an interesting application of donor-acceptor molecules. We aimed to determine photo-induced structural changes in Pyrene-N,N-dimethylaniline (PyDMA). Static structures for many molecules are available at high resolution but the mechanism by which these molecules function and the structures of intermediate states often remain elusive. Knowledge of the geometry of molecular excited states at atomic resolution is crucial for a full understanding of photo-induced chemical processes. Time-resolved X-ray diffraction (TR-XRD) using polychromatic synchrotron radiation allows a detailed study of the time evolution of structural intermediates and short living states of chemical systems at wide range of time-scales, drawing a complete picture of the photo-induced charge transfer process. Investigation of photo-excitation processes in molecular single crystals, where the initial photo-excitation processes occur on extremely short time-scales (femto-/picosecond time domain) and have been in the focus of scientific investigations due to their possible applications, e.g. as optical switches.
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Mottin, Stephane, Canh Tran-Minh, Pierre Laporte, Raymond Cespuglio et Michel Jouvet. « Fiber-Optic Time-Resolved Fluorescence Sensor for in Vitro Serotonin Determination ». Applied Spectroscopy 47, no 5 (mai 1993) : 590–97. http://dx.doi.org/10.1366/0003702934067180.

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At pH 7 and with the excitation at wavelengths above 315 nm, previously unreported fluorescence of 5-HT (5-hydroxytryptamine) is observed. Two fluorescence bands were observed for 5-HT; the first emits at around 390 nm with an associated lifetime near 1 ns, and the other (well known) emits at 340 nm with an associated lifetime of 2.7 ns. With both static and time-resolved fluorescences, the spectral and temporal effects of the excitation wavelength were studied between 285 and 340 nm. With these basic spectroscopic properties as a starting point, a fiber-optic chemical sensor (FOCS) was developed in order to measure 5-HT with a single-fiber configuration, nitrogen laser excitation, and fast digitizing techniques. Temporal effects including fluorescence of the optical fiber were studied and compared with measurements both directly in cuvette and through the fiber-optic sensor. Less than thirty seconds are required for each measurement. A detection limit of 5-HT is reached in the range of 5 μM. Our system, with an improved sensitivity, could therefore be a possible and convenient “tool” for in vivo determination of 5-HT.
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Sciortino, Alice, Roberto Pecorella, Marco Cannas et Fabrizio Messina. « Effect of Halogen Ions on the Photocycle of Fluorescent Carbon Nanodots ». C — Journal of Carbon Research 5, no 4 (24 octobre 2019) : 64. http://dx.doi.org/10.3390/c5040064.

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Carbon dots (C-dots) are well-known for their strong sensitivity to the environment, which reflects on intensity and shape changes of their fluorescence, induced by various interacting ions and molecules in solution. Although these interactions have been extensively studied in the last few years, especially in view of their possible sensing applications, the existing works have mostly focused on the quenching of C-dot fluorescence induced by metal cations. In fact, these latter easily bind to C-dots surfaces, which are negatively charged in most cases, promoting an electron transfer from the surface to them. Much less is known from the literature on the effect induced on C-dots by prototypical negative species in solutions, motivating more systematic studies on this different class of interactions. Here, we analyzed the effect of halogen ions on the fluorescence of C-dots, by combining steady-state optical absorption and photoluminescence, time-resolved fluorescence and femtosecond pump/probe spectroscopy. We demonstrate a quenching effect of C-dots fluorescence in the presence of halogen ions, which becomes more and more pronounced with increasing atomic number of the halogens, being negligible for chloride, appreciable for bromide and stronger for iodide. We find that quenching is mostly static, due to the binding of halogen ions on suitable surface sites at C-dots surfaces, while collisional quenching becomes obvious only at very high iodide concentrations. Finally, nanosecond and femtosecond time-resolved spectroscopies provide information on the quenching mechanism and time scales. Based on these data, we propose that the fluorescent state is deactivated by intersystem crossing to a dark triplet state, induced by close-range interactions with the heaviest halogen ions.
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Noda, Isao, A. E. Dowrey et Curtis Marcott. « A Spectrometer for Measuring Time-Resolved Infrared Linear Dichroism Induced by a Small-Amplitude Oscillatory Strain ». Applied Spectroscopy 42, no 2 (février 1988) : 203–16. http://dx.doi.org/10.1366/0003702884428310.

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A spectrometer for detecting dynamic infrared linear dichroism (DIRLD) induced by a small-amplitude oscillatory strain is described. The strain-induced dynamic variations of absorbance and linear dichroism, as well as the normal static absorbance and dichroism, are measured simultaneously as functions of IR wavenumber, temperature, and strain frequency. The phase (temporal) relationships between the dynamic optical signals and the applied strain are also obtained. The instrument is sensitive enough to detect dynamic optical signals on the order of 10−4 absorbance units with a time resolution of about 14 μs. The dynamic dichroism signals arise from the strain-induced temporary reorientation of dipole-transition moments associated with the molecular vibrations of chemical functional groups. Both the rate and extent of reorientations are strongly influenced by the local molecular environment of the functional groups. Because of the specificity of IR absorbance bands to the individual submolecular structures, DIRLD spectroscopy is especially suited for the study of the intra- and intermolecular interactions and the detection of subtle changes in the local molecular environment. Example DIRLD spectra of atactic polystyrene are presented to demonstrate the potential utility of this spectroscopic technique.
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Abraham, Suja, et Vellaichamy Parthasarathy. « INTERACTION OF COPPER OXIDE NANOPARTICLES WITH BOVINE SERUM ALBUMIN BY SPECTROSCOPIC STUDIES ». International Journal of Pharmacy and Pharmaceutical Sciences 10, no 5 (1 mai 2018) : 35. http://dx.doi.org/10.22159/ijpps.2018v10i5.24877.

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Objective: Since structural changes of adsorbed protein are necessary for cellular uptake of nanoparticles (NPs) it is of prime importance to know about structural changes of bovine serum albumin (BSA) when it interacts with CuO NPs–a potential new antitumor drug.Methods: CuO NPs prepared by sol-gel technique were characterized by x-ray diffraction (XRD) and tunneling electron microscope (TEM) techniques. The conformational changes induced by CuO NPs on BSA were studied by various spectroscopic techniques such as steady state and time-resolved fluorescence measurements. The changes in fluorescence emission parameters such as fluorescence intensity, fluorescence emission maximum and lifetimes of fluorescent residues in BSA were studied.Results: XRD analysis showed the average particle size as 32 nm. The TEM micrograph showed particles of different size varying from 10 to 45 nm. Fluorescence quenching was confirmed due to a decrease in fluorescence intensity of CuO NPs–BSA complex. The analysis of lifetime measurements indicated BSA contained two tryptophan (trp) residues that fluoresced in different environments. Static quenching mechanism was confirmed by time-resolved measurements when BSA interacted with CuO NPs.Conclusion: Minor structural changes of BSA protein were observed during the interaction studies.
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Rao, Usha, Shivanand Chaurasia, C. D. Sijoy, Vinayak Mishra et M. N. Deo. « In Situ Raman Spectroscopic Studies of Liquid Carbon Tetrachloride (CCl4) Under Static and Laser-Driven Shock Compression ». Applied Spectroscopy 73, no 12 (12 août 2019) : 1420–27. http://dx.doi.org/10.1177/0003702819856372.

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High pressure (up to ∼2.2 GPa) Raman scattering studies were performed in carbon tetrachloride (CCl4) under static and dynamic compressions using diamond anvil cell (DAC) and laser-driven shock methods, respectively, and their results are compared. The laser-driven shock experiments were conducted in a glass-confined target geometry. The symmetric stretching mode ν1, symmetric bending mode ν2, and asymmetric bending mode ν4 blueshifts with pressure. Mode Gruneisen parameters were obtained for the above Raman modes. Time-resolved Raman spectroscopic (TRRS) studies were performed under laser-driven shock compression at different delay times. Shock velocity deduced from the intensity ratios of Raman signal scattered from unshocked and shocked regions of symmetric stretching mode is in agreement with the one obtained from one-dimensional hydrodynamic simulations.
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10

Chinnathambi, Shanmugavel, Subramani Karthikeyan, Devadasan Velmurugan, Nobutaka Hanagata, Prakasarao Aruna et Singaravelu Ganesan. « Investigations on the Interactions of 5-Fluorouracil with Herring Sperm DNA : Steady State/Time Resolved and Molecular Modeling Studies ». Biophysical Reviews and Letters 10, no 02 (juin 2015) : 115–33. http://dx.doi.org/10.1142/s1793048015500034.

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In the present study, the interaction of 5-Fluorouracil with herring sperm DNA is reported using spectroscopic and molecular modeling techniques. This binding study of 5-FU with hs-DNA is of paramount importance in understanding chemico–biological interactions for drug design, pharmacy and biochemistry without altering the original structure. The challenge of the study was to find the exact binding mode of the drug 5-Fluorouracil with hs-DNA. From the absorption studies, a hyperchromic effect was observed for the herring sperm DNA in the presence of 5-Fluorouracil and a binding constant of 6.153 × 103 M-1 for 5-Fluorouracil reveals the existence of weak interaction between the 5-Fluorouracil and herring sperm DNA. Ethidium bromide loaded herring sperm DNA showed a quenching in the fluorescence intensity after the addition of 5-Fluorouracil. The binding constants for 5-Fluorouracil stranded DNA and competitive bindings of 5-FU interacting with DNA–EB systems were examined by fluorescence spectra. The Stern–Volmer plots and fluorescence lifetime results confirm the static quenching nature of the drug-DNA complex. The binding constant Kb was 2.5 × 104 L mol-1 and the number of binding sites are 1.17. The 5-FU on DNA system was calculated using double logarithmic plot. From the Forster nonradiative energy transfer study it has been found that the distance of 5-FU from DNA was 4.24 nm. In addition to the spectroscopic results, the molecular modeling studies also revealed the major groove binding as well as the partial intercalation mode of binding between the 5-Fluorouracil and herring sperm DNA. The binding energy and major groove binding as -6.04 kcal mol-1 and -6.31 kcal mol-1 were calculated from the modeling studies. All the testimonies manifested that binding modes between 5-Fluorouracil and DNA were evidenced to be groove binding and in partial intercalative mode.
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Baranowska, Karolina, Michał Mońka, Piotr Bojarski et Marek Józefowicz. « Insight into Molecular Interactions of Two Methyl Benzoate Derivatives with Bovine Serum Albumin ». International Journal of Molecular Sciences 22, no 21 (28 octobre 2021) : 11705. http://dx.doi.org/10.3390/ijms222111705.

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The nature and mechanisms of interaction between two selected methyl benzoate derivatives (methyl o-methoxy p-methylaminobenzoate–I and methyl o-hydroxy p-methylaminobenzoate–II) and model transport protein bovine serum albumin (BSA) was studied using steady-state and time-resolved spectroscopic techniques. In order to understand the role of Trp residue of BSA in the I-BSA and II-BSA interaction, the effect of free Trp amino acid on the both emission modes (LE–locally excited (I and II) and ESIPT–excited state intramolecular proton transfer (II)) was investigated as well. Experimental results show that the investigated interactions (with both BSA and Trp) are mostly conditioned by the ground and excited state complex formation processes. Both molecules form stable complexes with BSA and Trp (with 1:1 stoichiometry) in the ground and excited states. The binding constants were in the order of 104 M−1. The absorption- and fluorescence-titration experiments along with the time-resolved fluorescence measurements show that the binding of the I and II causes fluorescence quenching of BSA through the static mechanism, revealing a 1:1 interaction. The magnitude and the sign of the thermodynamic parameters, ΔH, ΔS, and ΔG, determined from van’t Hoff relationship, confirm the predominance of the hydrogen-bonding interactions for the binding phenomenon. To improve and complete knowledge of methyl benzoate derivative-protein interactions in relation to supramolecular solvation dynamics, the time-dependent fluorescence Stokes’ shifts, represented by the normalized spectral response function c(t), was studied. Our studies reveal that the solvation dynamics that occurs in subpicosecond time scale in neat solvents of different polarities is slowed down significantly when the organic molecule is transferred to BSA cavity.
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Botti, Valentina, Salvatore Cannistraro et Anna Rita Bizzarri. « Interaction of miR-155 with Human Serum Albumin : An Atomic Force Spectroscopy, Fluorescence, FRET, and Computational Modelling Evidence ». International Journal of Molecular Sciences 23, no 18 (14 septembre 2022) : 10728. http://dx.doi.org/10.3390/ijms231810728.

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This study investigated the interaction between Human Serum Albumin (HSA) and microRNA 155 (miR-155) through spectroscopic, nanoscopic and computational methods. Atomic force spectroscopy together with static and time-resolved fluorescence demonstrated the formation of an HSA/miR-155 complex characterized by a moderate affinity constant (KA in the order of 104 M−1). Förster Resonance Energy Transfer (FRET) experiments allowed us to measure a distance of (3.9 ± 0.2) nm between the lone HSA Trp214 and an acceptor dye bound to miR-155 within such a complex. This structural parameter, combined with computational docking and binding free energy calculations, led us to identify two possible models for the structure of the complex, both characterized by a topography in which miR-155 is located within two positively charged pockets of HSA. These results align with the interaction found for HSA and miR-4749, reinforcing the thesis that native HSA is a suitable miRNA carrier under physiological conditions for delivering to appropriate targets.
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Chaves, Otavio Augusto, Margareth Rose de Lima Santos, Aurea Echevarria, Carlos Mauricio R. Sant'Anna, Aurélio Baird Buarque Ferreira et José Carlos Netto-Ferreira. « Interaction between HSA and a thiosemicarbazide derivative : Analysis of the effect of a methyl group in the binding ability ». Mediterranean Journal of Chemistry 7, no 1 (12 mars 2018) : 8–17. http://dx.doi.org/10.13171/mjc71/01803120918-ferreira.

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The interaction between the methyl thiosemicarbazide derivative ETS2 and Human Serum Albumin (HSA) - the main vehicle of biodistribution of small molecules in the human bloodstream - was evaluated by multiple spectroscopic techniques (circular dichroism, steady state, time-resolved, synchronous and 3D fluorescence) under physiological conditions, combined with theoretical calculations (molecular docking). The interaction HSA:ETS2 is spontaneous, moderate and is already present in the ground state (static association). Increasing the temperature leads to an increase in binding and the association is entropically driven. The secondary structure of the protein does not suffer significant perturbation upon ligand binding, however, there is a perturbation on the microenvironment around the Trp-214 residue. Sudlow’s site I is the main binding site and molecular docking results suggest hydrogen bonding and hydrophobic interactions as the main binding forces. Overall, the presence of the methyl group in the ligand structure does not change significantly the protein structure, however, the presence of this group changed the thermodynamic profile, which strongly suggests that the methyl group decreases the binding ability of the thiosemicarbazide towards serum albumin.
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Mariño-Ocampo, Nory, Diego F. Rodríguez, Daniel Guerra Díaz, Daniel Zúñiga-Núñez, Yorley Duarte, Denis Fuentealba et Flavia C. Zacconi. « Direct Oral FXa Inhibitors Binding to Human Serum Albumin : Spectroscopic, Calorimetric, and Computational Studies ». International Journal of Molecular Sciences 24, no 5 (3 mars 2023) : 4900. http://dx.doi.org/10.3390/ijms24054900.

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Direct FXa inhibitors are an important class of bioactive molecules (rivaroxaban, apixaban, edoxaban, and betrixaban) applied for thromboprophylaxis in diverse cardiovascular pathologies. The interaction of active compounds with human serum albumin (HSA), the most abundant protein in blood plasma, is a key research area and provides crucial information about drugs’ pharmacokinetics and pharmacodynamic properties. This research focuses on the study of the interactions between HSA and four commercially available direct oral FXa inhibitors, applying methodologies including steady-state and time-resolved fluorescence, isothermal titration calorimetry (ITC), and molecular dynamics. The HSA complexation of FXa inhibitors was found to occur via static quenching, and the complex formation in the ground states affects the fluorescence of HSA, with a moderate binding constant of 104 M−1. However, the ITC studies reported significantly different binding constants (103 M−1) compared with the results obtained through spectrophotometric methods. The suspected binding mode is supported by molecular dynamics simulations, where the predominant interactions were hydrogen bonds and hydrophobic interactions (mainly π–π stacking interactions between the phenyl ring of FXa inhibitors and the indole moiety of Trp214). Finally, the possible implications of the obtained results regarding pathologies such as hypoalbuminemia are briefly discussed.
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De, Avijit K., et Tapan Ganguly. « Investigations on nonradiative transitions in different environments using excited (or ground state) 1,2,3,4-tetrahydroquinoline (THQ) as donor and ground state (or excited) 9-fluorenone (9FL) or 2-nitro-9-fluorenone (2N9FL) as acceptors ». Canadian Journal of Chemistry 78, no 1 (15 janvier 2000) : 139–50. http://dx.doi.org/10.1139/v99-224.

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By using steady state and time resolved spectroscopic techniques, investigations were made on the nature and mechanisms of different nonradiative processes involved within the excited donor (or acceptor) and ground state acceptor (or donor) in nonpolar n-heptane (NH), polar protic ethanol (EtOH), and polar aprotic acetonitrile (ACN) solvents at the ambient temperature as well as in EtOH rigid glassy matrix at 77 K. The bicyclic molecule 1,2,3,4-tetrahydroquinoline (THQ) was used as a donor (D) in the present investigation whereas 9-fluorenone (9FL) and 2-nitro-9-fluorenone (2N9FL) were chosen as electron acceptors (A). When the donor chromophore was excited in presence of an acceptor, highly exothermic electron transfer (ET) reactions seemed to occur from observed large negative driving energy (deltaG0) values, measured by electrochemical techniques, Förster's type energy transfer, static quenching, etc. An attempt was made to estimate separately the contributions of static and dynamic quenching modes in the overall quenching mechanism of donor fluorescence by using a model of modified Stern-Volmer (SV) relation. From this relation it seemingly indicated that the major contribution in quenching originated from the static mode. When excited acceptors react with the ground state donor THQ it is primarily ET reactions that seem to occur. Observations of the transient absorption spectra, by laser flash photolysis techniques, of contact ion-pairs of the present D-A systems along with the triplet absorption spectra of the monomeric acceptor (9FL and 2N9Fl) corroborate our views regarding the occurrence of photoinduced ET reactions within the present reacting systems. At 77 K the combined effect of Förster type energy transfer and static quenching seems to be responsible for observed lowering of donor fluorescence emission intensity in presence of acceptors (9FL or 2N9FL). However, the phosphorescence lifetime measurements reveal that the triplet donor might be involved in photoinduced ET reaction with the unexcited acceptor in rigid glassy matrix at 77 K and this possibly causes the reduction in the phosphorescence band intensity of the donor THQ in presence of the latter one. Key words: electron transfer, static quenching, fluorescence quenching, phosphorescence, energy transfer.
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Povinelli, Ana Paula Ribeiro, Gabriel Zazeri, Alan M. Jones et Marinnio Lopes Cornélio. « Unravelling the Interaction of Piperlongumine with the Nucleotide-Binding Domain of HSP70 : A Spectroscopic and In Silico Study ». Pharmaceuticals 14, no 12 (13 décembre 2021) : 1298. http://dx.doi.org/10.3390/ph14121298.

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Piperlongumine (PPL) is an alkaloid extracted from several pepper species that exhibits anti-inflammatory and anti-carcinogenic properties. Nevertheless, the molecular mode of action of PPL that confers such powerful pharmacological properties remains unknown. From this perspective, spectroscopic methods aided by computational modeling were employed to characterize the interaction between PPL and nucleotide-binding domain of heat shock protein 70 (NBD/HSP70), which is involved in the pathogenesis of several diseases. Steady-state fluorescence spectroscopy along with time-resolved fluorescence revealed the complex formation based on a static quenching mechanism. Van’t Hoff analyses showed that the binding of PPL toward NBD is driven by equivalent contributions of entropic and enthalpic factors. Furthermore, IDF and Scatchard methods applied to fluorescence intensities determined two cooperative binding sites with Kb of (6.3 ± 0.2) × 104 M−1. Circular dichroism determined the thermal stability of the NBD domain and showed that PPL caused minor changes in the protein secondary structure. Computational simulations elucidated the microenvironment of these interactions, showing that the binding sites are composed mainly of polar amino acids and the predominant interaction of PPL with NBD is Van der Waals in nature.
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Blanchard, G. J. « Time-Resolved and Short-Pulse Laser Spectroscopies ». Applied Spectroscopy 55, no 3 (mars 2001) : 110A—118A. http://dx.doi.org/10.1366/0003702011951830.

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Katayama, Tetsuo. « Ultrafast time-resolved X-ray spectroscopies at SACLA ». Acta Crystallographica Section A Foundations and Advances 73, a2 (1 décembre 2017) : C1048. http://dx.doi.org/10.1107/s2053273317085266.

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Hashimoto, Hideki, Mitsuru Sugisaki et Masayuki Yoshizawa. « Ultrafast time-resolved vibrational spectroscopies of carotenoids in photosynthesis ». Biochimica et Biophysica Acta (BBA) - Bioenergetics 1847, no 1 (janvier 2015) : 69–78. http://dx.doi.org/10.1016/j.bbabio.2014.09.001.

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Vöhringer, Peter. « Vibrations tell the tale. A time-resolved mid-infrared perspective of the photochemistry of iron complexes ». Dalton Transactions 49, no 2 (2020) : 256–66. http://dx.doi.org/10.1039/c9dt04165f.

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Bordiga, Silvia, Carlo Lamberti, Francesca Bonino, Arnaud Travert et Frédéric Thibault-Starzyk. « Probing zeolites by vibrational spectroscopies ». Chemical Society Reviews 44, no 20 (2015) : 7262–341. http://dx.doi.org/10.1039/c5cs00396b.

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This review addresses the most relevant aspects of vibrational spectroscopies (IR, Raman and INS) applied to zeolites and zeotype materials: acidity, basicity and site accessibility investigated by probes molecules; precise determination of the IR absorption coefficients; thermodynamic aspects of molecular adsorption; space and time resolved experiments.
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Hiyoshi, R., H. Hiura, Y. Sakamoto, M. Mizuno, M. Sakai et H. Takahashi. « Time-resolved absorption and time-resolved Raman spectroscopies of the photochemistry of carbazole and N-ethylcarbazole ». Journal of Molecular Structure 661-662 (décembre 2003) : 481–89. http://dx.doi.org/10.1016/j.molstruc.2003.08.033.

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Sotome, Hikaru, Daichi Kitagawa, Tatsumoto Nakahama, Syoji Ito, Seiya Kobatake, Masahiro Irie et Hiroshi Miyasaka. « Cyclization reaction dynamics of an inverse type diarylethene derivative as revealed by time-resolved absorption and fluorescence spectroscopies ». Physical Chemistry Chemical Physics 21, no 17 (2019) : 8623–32. http://dx.doi.org/10.1039/c8cp07393g.

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Chergui, Majed. « Time-resolved X-ray spectroscopies of chemical systems : New perspectives ». Structural Dynamics 3, no 3 (mai 2016) : 031001. http://dx.doi.org/10.1063/1.4953104.

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Kano, Hideaki, et Takayoshi Kobayashi. « Time-resolved fluorescence and absorption spectroscopies of porphyrin J-aggregates ». Journal of Chemical Physics 116, no 1 (2002) : 184. http://dx.doi.org/10.1063/1.1421073.

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Atabek, O. « Time-resolved photodissociation dynamics studied by absorption and emission spectroscopies ». Journal de Chimie Physique 87 (1990) : 775–817. http://dx.doi.org/10.1051/jcp/1990870775.

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Galle Kankanamge, Susith R., et Daniel G. Kuroda. « Molecular structure and ultrafast dynamics of sodium thiocyanate ion pairs formed in glymes of different lengths ». Physical Chemistry Chemical Physics 21, no 2 (2019) : 833–41. http://dx.doi.org/10.1039/c8cp06869k.

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Yu, Man, Shuai Yuan, Hao-Yi Wang, Jia-Shang Zhao, Yujun Qin, Li-Min Fu, Jian-Ping Zhang et Xi-Cheng Ai. « Characterization of the influences of morphology on the intrinsic properties of perovskite films by temperature-dependent and time-resolved spectroscopies ». Physical Chemistry Chemical Physics 20, no 9 (2018) : 6575–81. http://dx.doi.org/10.1039/c7cp08402a.

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Johnson, Philip J. M., Alexei Halpin, Takefumi Morizumi, Leonid S. Brown, Valentyn I. Prokhorenko, Oliver P. Ernst et R. J. Dwayne Miller. « The photocycle and ultrafast vibrational dynamics of bacteriorhodopsin in lipid nanodiscs ». Phys. Chem. Chem. Phys. 16, no 39 (2014) : 21310–20. http://dx.doi.org/10.1039/c4cp01826e.

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Godin, Robert, Takashi Hisatomi, Kazunari Domen et James R. Durrant. « Understanding the visible-light photocatalytic activity of GaN:ZnO solid solution : the role of Rh2−yCryO3 cocatalyst and charge carrier lifetimes over tens of seconds ». Chemical Science 9, no 38 (2018) : 7546–55. http://dx.doi.org/10.1039/c8sc02348d.

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Niedzwiedzki, Dariusz M., et Laura Cranston. « Excited state lifetimes and energies of okenone and chlorobactene, exemplary keto and non-keto aryl carotenoids ». Physical Chemistry Chemical Physics 17, no 20 (2015) : 13245–56. http://dx.doi.org/10.1039/c5cp00836k.

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Yamamoto, Aishi, Yuko Taguchi, Yasuhiko Satake et Atsushi Ishizumi. « Multi-peak photoluminescence in ZnO nanocrystals studied by time-resolved and spatially-resolved photoluminescence spectroscopies ». Physics Procedia 13 (2011) : 78–81. http://dx.doi.org/10.1016/j.phpro.2011.02.019.

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Yamamoto, Susumu, et Iwao Matsuda. « Time-Resolved Photoelectron Spectroscopies Using Synchrotron Radiation : Past, Present, and Future ». Journal of the Physical Society of Japan 82, no 2 (15 février 2013) : 021003. http://dx.doi.org/10.7566/jpsj.82.021003.

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Dorfman, Konstantin E., Benjamin P. Fingerhut et Shaul Mukamel. « Time-resolved broadband Raman spectroscopies : A unified six-wave-mixing representation ». Journal of Chemical Physics 139, no 12 (28 septembre 2013) : 124113. http://dx.doi.org/10.1063/1.4821228.

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Lazić, Predrag, Damir Aumiler et Branko Gumhalter. « Nonadiabatic quasiparticle dynamics in time resolved electron spectroscopies of surface bands ». Surface Science 603, no 10-12 (juin 2009) : 1571–78. http://dx.doi.org/10.1016/j.susc.2008.09.061.

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Vasconcellos, Áurea R., M. J. S. P. Brasil, Roberto Luzzi, A. A. P. Silva et A. H. S. Leite. « Ambipolar diffusion and spatial and time-resolved spectroscopies in semiconductor heterostructures ». Journal of Applied Physics 106, no 4 (15 août 2009) : 043503. http://dx.doi.org/10.1063/1.3173176.

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Chen, Eefei, Robert A. Goldbeck et David S. Kliger. « Nanosecond time-resolved polarization spectroscopies : Tools for probing protein reaction mechanisms ». Methods 52, no 1 (septembre 2010) : 3–11. http://dx.doi.org/10.1016/j.ymeth.2010.04.015.

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Milne, C. J., T. J. Penfold et M. Chergui. « Recent experimental and theoretical developments in time-resolved X-ray spectroscopies ». Coordination Chemistry Reviews 277-278 (octobre 2014) : 44–68. http://dx.doi.org/10.1016/j.ccr.2014.02.013.

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Rakymzhan, A., T. Yakupov, Z. Yelemessova, R. Bukasov, V. V. Yakovlev et Z. N. Utegulov. « Time‐resolved assessment of drying plants by Brillouin and Raman spectroscopies ». Journal of Raman Spectroscopy 50, no 12 (15 septembre 2019) : 1881–89. http://dx.doi.org/10.1002/jrs.5742.

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Sato, Ryota, Hajime Okajima, Shinya Sugiura, Yohei Haketa, Yusuke Kinoshita, Hitoshi Tamiaki, Akira Sakamoto, Hiromitsu Maeda et Yoichi Kobayashi. « Excited-state dynamics of dipyrrolyldiketone difluoroboron complexes ». Physical Chemistry Chemical Physics 24, no 3 (2022) : 1685–91. http://dx.doi.org/10.1039/d1cp04804j.

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Boulanger, Sean A., Cheng Chen, Longteng Tang, Liangdong Zhu, Nadezhda S. Baleeva, Ivan N. Myasnyanko, Mikhail S. Baranov et Chong Fang. « Shedding light on ultrafast ring-twisting pathways of halogenated GFP chromophores from the excited to ground state ». Physical Chemistry Chemical Physics 23, no 27 (2021) : 14636–48. http://dx.doi.org/10.1039/d1cp02140k.

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Merga, Galaan, Maria Fernandez Lopez, Paul Fischer, Patrick Piwowarski, Żaneta Nogacz, Anastasia Kraskov, David Buhrke et al. « Light- and temperature-dependent dynamics of chromophore and protein structural changes in bathy phytochrome Agp2 ». Physical Chemistry Chemical Physics 23, no 33 (2021) : 18197–205. http://dx.doi.org/10.1039/d1cp02494a.

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Gomez, Eduardo, Mario Gutiérrez, Miquel Moreno, Ichiro Hisaki, Schoichi Nakagawa et Abderrazzak Douhal. « Spectroscopy and dynamics of dehydrobenzo[12]annulene derivatives possessing peripheral carboxyphenyl groups : theory and experiment ». Physical Chemistry Chemical Physics 20, no 11 (2018) : 7415–27. http://dx.doi.org/10.1039/c7cp06819k.

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Steady-state and pico-microsecond time-resolved spectroscopies of the indicated DBA derivatives in solutions show the involvement of singlet, triplet and H-bonded structures in their rich photodynamics.
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Kang, Hyun Suk, Samuel Peurifoy, Boyuan Zhang, Andrew J. Ferguson, Obadiah G. Reid, Colin Nuckolls et Jeffrey L. Blackburn. « Linking optical spectra to free charges in donor/acceptor heterojunctions : cross-correlation of transient microwave and optical spectroscopy ». Materials Horizons 8, no 5 (2021) : 1509–17. http://dx.doi.org/10.1039/d0mh01810d.

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Quantitative cross-correlation of time-resolved spectroscopies in the visible/near-IR and microwave regions provides deeper understanding of photoinduced charge separation across donor/acceptor heterojunctions than either technique alone.
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Kumar, Pushpendra, et Suman Kalyan Pal. « Ultrafast multiexponential electron injection dynamics at a dye and ZnO QD interface : a combined spectroscopic and first principles study ». Physical Chemistry Chemical Physics 18, no 42 (2016) : 29571–81. http://dx.doi.org/10.1039/c6cp04610j.

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Multiexponential electron injection across a dye and ZnO quantum dot (QD) interface has been demonstrated using a combination of steady-state, time-resolved fluorescence and femtosecond transient absorption (TA) spectroscopies.
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Baumberg, Jeremy, Michael Nielsen, Sergey Bozhevolnyi, Viktor Podolskiy, Thomas Ebbesen, Kaiqiang Lin, Alexei A. Kornyshev et al. « Surface plasmon enhanced spectroscopies and time and space resolved methods : general discussion ». Faraday Discussions 178 (2015) : 253–79. http://dx.doi.org/10.1039/c5fd90023a.

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Wilhelm, Michael J., Jonathan M. Smith et Hai-Lung Dai. « Spectral reconstruction analysis for enhancing signal-to-noise in time-resolved spectroscopies ». Journal of Chemical Physics 143, no 12 (28 septembre 2015) : 124204. http://dx.doi.org/10.1063/1.4931581.

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Julien, Olivier, Guoli Wang, Abel Jonckheer, Yves Engelborghs et Brian D. Sykes. « Tryptophan side chain conformers monitored by NMR and time-resolved fluorescence spectroscopies ». Proteins : Structure, Function, and Bioinformatics 80, no 1 (9 novembre 2011) : 239–45. http://dx.doi.org/10.1002/prot.23198.

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Zheng, Kaibo, Yani Chen, Yong Sun, Junsheng Chen, Pavel Chábera, Richard Schaller, Mohammed J. Al-Marri, Sophie E. Canton, Ziqi Liang et Tõnu Pullerits. « Inter-phase charge and energy transfer in Ruddlesden–Popper 2D perovskites : critical role of the spacing cations ». Journal of Materials Chemistry A 6, no 15 (2018) : 6244–50. http://dx.doi.org/10.1039/c8ta01518j.

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Photo-generated charge carrier dynamics in Ruddlesden–Popper 2D perovskites with linear (n-BA) and branched (iso-BA) butylamine as spacing cations have been studied by using transient absorption and time-resolved photoluminescence spectroscopies.
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Tümay, Süreyya Oğuz, Vildan Şanko, Ahmet Şenocak et Erhan Demirbas. « A hybrid nanosensor based on novel fluorescent iron oxide nanoparticles for highly selective determination of Hg2+ ions in environmental samples ». New Journal of Chemistry 45, no 32 (2021) : 14495–507. http://dx.doi.org/10.1039/d1nj02908h.

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Novel fluorescent iron oxide nanoparticles were prepared for the determination of Hg2+ in real samples. The fluorescence behaviors of the sensor were examined using absorption and fluorescence (steady-state, time-resolved, 3-D, EEM) spectroscopies.
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