Intersystem crossing into a superposition of spin states? The system tetramethylpyrazine in durene

1976 ◽  
Vol 41 (3) ◽  
pp. 435-439 ◽  
Author(s):  
R.A. Schadee ◽  
J. Schmidt ◽  
J.H. Van der Waals
Keyword(s):  
Intersystem Crossing ◽  
Spin States

scholarly journals Intersystem crossing rates of single perylene molecules in ortho-dichlorobenzene

2016 ◽  
Vol 18 (26) ◽  
pp. 17655-17659 ◽  
Author(s):  
Nico R. Verhart ◽  
Pedro Navarro ◽  
Sanli Faez ◽  
Michel Orrit
Keyword(s):  
Optical Switching ◽  
Intersystem Crossing ◽  
Triplet States ◽  
Spin States ◽  
Molecular Fluorescence

Triplet states can be interesting for optical switching of molecular fluorescence as well as quantum experiments relying on the manipulation of spin states.

scholarly journals Theoretical Investigation of All Optical Switching by Intersystem Crossing

2019 ◽  
Vol 10 (1) ◽  
pp. 128
Author(s):  
Yuhao Zou ◽  
Haiwei Wang ◽  
Haozhe Huang ◽  
Zhihao Zeng ◽  
Kai Wang ◽  
...  
Keyword(s):  
Decay Rate ◽  
Optical Switching ◽  
Intersystem Crossing ◽  
Spin States ◽  
Magnetic Orientation ◽  
Incident Laser ◽  
Rabi Model ◽  
All Optical ◽  
Spin Flips ◽  
All Optical Switching

The dynamics of spin flips induced by the femtosecond laser are theoretically investigated in this article. The spin flips in this scenario are attributed to the intersystem crossing (ISC) described within the frame of the Rabi model. This new explanation is a step attempting to explain the mechanism of the all-optical magnetic orientation switching in the perspective of the conservation of the angular momentum and breaks of the selection rule, which is ignored in the Raman scattering related explanations. The final spin states discussed herein are closely related to the intensity of the incident laser and the ISC decay rate. The quantitative analysis of the relation between decay rate, temperature and the intensity of the laser is discussed.

Simultaneous Observation of Triplet and Singlet Cyclopentane-1,3-diyl Diradicals in the Intersystem Crossing Process

2015 ◽  
Vol 68 (11) ◽  
pp. 1700 ◽  
Author(s):  
Takemi Mizuno ◽  
Manabu Abe ◽  
Noriaki Ikeda
Keyword(s):  
Rate Constant ◽  
Chemical Process ◽  
Growth Process ◽  
Decay Process ◽  
Intersystem Crossing ◽  
Spin States ◽  
Simultaneous Observation ◽  
Important Chemical

Intersystem crossing is an important chemical process. In this study, the rate constant of intersystem crossing, kISC ~3 × 107 s–1, for cyclopentane-1,3-diyl diradicals was unequivocally determined by the simultaneous observation of the decay process of the triplet diradical (λobs = 320 nm) and the growth process of the corresponding singlet diradical (λobs = 560 nm). The two spin states were directly observed using a long-lived singlet 2,2-dimethoxy-1,3-diphenylcyclopentane-1,3-diyl diradical.

Intersystem crossing into a coherent superposition of spin states following flash excitation

1979 ◽  
Vol 60 (3) ◽  
pp. 353-357 ◽  
Author(s):  
C.J. Nonhof ◽  
F.L. Plantenga ◽  
J. Schmidt ◽  
C.A.G.O. Varma ◽  
J.H. van der Waals
Keyword(s):  
Intersystem Crossing ◽  
Spin States ◽  
Coherent Superposition

DESCRIPTION OF HIGH SPIN STATES

1980 ◽  
Vol 41 (C10) ◽  
pp. C10-143-C10-154 ◽  
Author(s):  
A. Faessler
Keyword(s):  
High Spin ◽  
Spin States ◽  
High Spin States

Spin-Forbidden Excitation Enables Infrared Photoredox Catalysis

2020 ◽  
Author(s):  
Tomislav Rovis ◽  
Benjamin D. Ravetz ◽  
Nicholas E. S. Tay ◽  
Candice Joe ◽  
Melda Sezen-Edmonds ◽  
...  
Keyword(s):  
Excited State ◽  
Ground State ◽  
Intersystem Crossing ◽  
Photoredox Catalysis ◽  
Infrared Irradiation ◽  
Triplet Excitation ◽  
New Family ◽  
Ir Light

We describe a new family of catalysts that undergo direct ground state singlet to excited state triplet excitation with IR light, leading to photoredox catalysis without the energy waste associated with intersystem crossing. The finding allows a mole scale reaction in batch using infrared irradiation.

CLB18: A New Structural Database with Unusual Carbon–Carbon Long Bonds

2020 ◽  
Author(s):  
Pierpaolo Morgante ◽  
Roberto Peverati
Keyword(s):  
Transition Metal Complexes ◽  
Low Cost ◽  
Geometry Optimization ◽  
Structure Calculation ◽  
Unique Property ◽  
Spin States ◽  
Calculation Methods ◽  
Large Molecules ◽  
Barrier Heights ◽  
Structural Database

<div><div><div><p>In this Letter, we introduce a new database called carbon long bond 18 (CLB18), composed of 18 structures with one long C–C bond. We use this new database to evaluate the performance of several low-cost methods commonly used for geometry optimization of medium and large molecules. We found that the long bonds in CLB18 are electronically different from those found in barrier heights databases. We also report the unexpected correlation between the results of CLB18 and those of the energetics of spin states in transition-metal complexes. Given this unique property, CLB18 can be a useful tool for assessing existing electronic structure calculation methods and developing new ones.</p></div></div></div>

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