scholarly journals Change In Total Angular Momentum Within The Z3F0 Titanium Excited State Induced By Collisions With Hydrogen And Nitrogen Molecules

1989 ◽  
Vol 10 (2) ◽  
pp. 93-107 ◽  
Author(s):  
V. Quichaud ◽  
D. Dézert ◽  
J. Aubreton ◽  
D. Degout ◽  
A. Catherinot
Keyword(s):  
Angular Momentum ◽  
Excited State ◽  
Cross Sections ◽  
Total Angular Momentum ◽  
Diatomic Molecules ◽  
Noble Gas ◽  
Excited Level ◽  
Time Resolved ◽  
Time Resolved Spectroscopy

Collisions that produce a change in the total angular-momentum and quenching processes involving the triplet Z3F0 titanium excited level and diatomic molecules have been studied by laser perturbation and time-resolved spectroscopy. The thermally averaged total angular-momentum changing cross sections (z3Fi0→z3Fj0) in units of 10−16cm2 are: σ¯42=3.2±1, 1.4±0.5; σ¯43=13.3±2, 6.8±1; σ¯32 =19.0±2, 7.2±1 , respectively, for nitrogen and hydrogen colliding partners.Large quenching cross sections are obtained, as σ−QN2=53±7, and σ−QH2=38±4 in units of 10-16 cm2. These results are discussed in relation with previous measurements dealing with titanium-noble-gas collisions, and with available published results.

scholarly journals Time-Resolved Spectroscopy of the Metal-to-Metal Charge Transfer Excited State in Dinuclear Cyano-Bridged Mixed-Valence Complexes

2005 ◽  
Vol 44 (15) ◽  
pp. 5530-5536 ◽  
Author(s):  
Brendan P. Macpherson ◽  
Paul V. Bernhardt ◽  
Andreas Hauser ◽  
Stéphane Pagès ◽  
Eric Vauthey
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Mixed Valence ◽  
Time Resolved ◽  
Metal Charge ◽  
Time Resolved Spectroscopy ◽  
Metal Charge Transfer

The dynamics of the Br + HgBr (v = 0, j = 0) → Br2 + Hg reaction based on quasi-classical trajectory calculations

2018 ◽  
Vol 96 (8) ◽  
pp. 926-932 ◽  
Author(s):  
Guan-Qing Ren ◽  
Ai-Ping Fu ◽  
Shu-Ping Yuan ◽  
Tian-Shu Chu
Keyword(s):  
Angular Momentum ◽  
Cross Sections ◽  
Relative Velocity ◽  
Total Angular Momentum ◽  
Collision Energy ◽  
Energy Surface ◽  
Classical Trajectory ◽  
Title Reaction ◽  
Trajectory Calculations ◽  
Angular Momentum Quantum Number

To investigate the dynamics mechanism of the Br + HgBr → Br2 + Hg reaction, the quasi-classical trajectory calculations are performed on Balabanov’s potential energy surface (PES) of ground electronic state. Both the scalar and vector properties are investigated to recognize the dynamics of the title reaction. Reaction probability for the total angular momentum quantum number J = 0 is determined at the collision energies (denoted as Ec) in a range of 1–25 kcal/mol, and the product vibrational distributions are given and compared between Ec = 20 and 40 kcal/mol. Other calculation values characterizing product polarizations including polarization-dependent differential cross sections (PDDCSs), distributions of P(θr), P([Formula: see text]), and P(θr, [Formula: see text]), are all discussed and compared between the two different collision energies in detail to analyze the alignment and orientation characteristics. It is revealed that the products prefer forward scattering and the PDDCSs are anisotropic in the whole range of the scattering angle. The product rotational angular momentum j′ shows a tendency to align perpendicular to the reagent relative velocity k. In fact, the product polarization of the title reaction is weak at both collision energies. In terms of horizontal comparison, the alignment is slightly stronger but the orientation is even less remarkable at higher collision energy.

Spectral and Photoprototropic Characteristics of 4-Aminobiphenyl in β-Cyclodextrin

2004 ◽  
Vol 69 (4) ◽  
pp. 748-758 ◽  
Author(s):  
Israel V. Muthu Vijayan Enoch ◽  
Meenakshisundaram Swaminathan
Keyword(s):  
Excited State ◽  
Steady State ◽  
Fluorescence Spectroscopy ◽  
Inclusion Complex ◽  
Ground State ◽  
Time Resolved Fluorescence ◽  
Neutral Form ◽  
Time Resolved ◽  
Time Resolved Spectroscopy

The photophysical and photoprototropic behaviour of 4-aminobiphenyl (4ABP) in aqueous β-cyclodextrin (β-CDx) solution has been investigated using steady-state and time-resolved fluorescence spectroscopy. Fluorescence of the neutral form of 4ABP is enhanced due to the formation of a 1:1 complex with β-CDx. The formation of this complex has been confirmed by time-resolved spectroscopy. In the presence of β-CDx, no change was observed in the ground state pKa value but the excited state pKa value changed. Based on its photophysical and photoprototropic characteristics in β-CDx, the structure of the 1:1 inclusion complex is proposed.

Excited state dynamics of nanocrystalline VO 2 with white light continuum time resolved spectroscopy

2014 ◽  
Vol 333 ◽  
pp. 109-114 ◽  
Author(s):  
Ulaş Kürüm ◽  
H. Gul Yaglioglu ◽  
Betül Küçüköz ◽  
R. Mustafa Oksuzoglu ◽  
Mustafa Yıldırım ◽  
...  
Keyword(s):  
Excited State ◽  
White Light ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Excited State Dynamics ◽  
White Light Continuum

The Viscomagnetic Effect in Mixtures

1973 ◽  
Vol 28 (6) ◽  
pp. 849-861 ◽  
Author(s):  
A. L. J. Burgmans ◽  
P. G. van Ditzhuyzen ◽  
H. F. P. Knaap
Keyword(s):  
Cross Sections ◽  
Diatomic Molecules ◽  
Noble Gas ◽  
Simple Interaction

A study is presented of the viscomagnetic effect in binar mixtures consisting of diatomics and noble gas atoms. The following systems have been investigated: HD -He, HD -Ne, HD-Ar and N2 -He, N2-Ne, N2-Ar. The purpose of this research is to obtain effective cross sections for the relatively simple interaction between monatomic and diatomic molecules. Various effective cross sections are presented.

Step-Scan FTIR Time-Resolved Spectroscopy Study of Excited-State Dipole Orientation in Soluble Metallopolymers

2000 ◽  
Vol 39 (5) ◽  
pp. 893-898 ◽  
Author(s):  
Gregory D. Smith ◽  
Kimberly A. Maxwell ◽  
Joseph M. DeSimone ◽  
Thomas J. Meyer ◽  
Richard A. Palmer
Keyword(s):  
Excited State ◽  
Spectroscopy Study ◽  
Dipole Orientation ◽  
Time Resolved ◽  
Time Resolved Spectroscopy

Planar hexaphyrin-like macrocycles turning into bis-BODIPYs with box-shaped structures exhibiting excitonic coupling

2021 ◽  
Author(s):  
Arumugam Kalaiselvan ◽  
Shaina Dhamija ◽  
Chakrapani Aswathi ◽  
Arijit K. De ◽  
Sabapathi Gokulnath
Keyword(s):  
Electronic Structure ◽  
Excited State ◽  
Electronic Structure Calculations ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Excited State Dynamics ◽  
Structure Calculations ◽  
Excitonic Coupling

This present study reveals the synthesis and excited-state dynamics of carbazole embedded hexaphyrin-like macrocycles and their bis-BODIPY complexes. Time-resolved spectroscopy was performed to elucidate the excitonic coupling in conjunction with electronic structure calculations.

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