Time Resolved ESR Study on the Photochemical Reactions of Pyrene and Nitroxide Radical System in Micelle; Formation of Spin-Correlated Pyrene Cation–Nitroxide Pairs

AbstractLight is a form of energy that can be converted to electric and chemical energies. Thus, organic photovoltaics (OPVs), perovskite solar cells (PSCs), photocatalysts, and photodetectors have evolved as scientific and commercial enterprises. However, the complex photochemical reactions and multicomponent materials involved in these systems have hampered rapid progress in their fundamental understanding and material design. This review showcases the evaluation-oriented exploration of photo energy conversion materials by using electrodeless time-resolved microwave conductivity (TRMC) and materials informatics (MI). TRMC with its unique options (excitation sources, environmental control, frequency modulation, etc.) provides not only accelerated experimental screening of OPV and PSC materials but also a versatile route toward shedding light on their charge carrier dynamics. Furthermore, MI powered by machine learning is shown to allow extremely high-throughput exploration in the large molecular space, which is compatible with experimental screening and combinatorial synthesis.

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Excited quartet and doublet states in the complex of tetraphenylporphine zinc (II) and a nitroxide radical in solution: X- and W-band time-resolved EPR studies

Applied Magnetic Resonance ◽

10.1007/bf03162422 ◽

2001 ◽

Vol 21 (3-4) ◽

pp. 483-493 ◽

Cited By ~ 33

Author(s):

J. Fujisawa ◽

Y. Iwasaki ◽

Y. Ohba ◽

S. Yamauchi ◽

N. Koga ◽

...

Keyword(s):

Nitroxide Radical ◽

Time Resolved ◽

W Band

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C60 Derivative Covalently Linked to a Nitroxide Radical: Time-Resolved EPR Evidence of Electron Spin Polarization by Intramolecular Radical-Triplet Pair Interaction

Journal of the American Chemical Society ◽

10.1021/ja00139a022 ◽

1995 ◽

Vol 117 (34) ◽

pp. 8857-8858 ◽

Cited By ~ 118

Author(s):

Carlo Corvaja ◽

Michele Maggini ◽

Maurizio Prato ◽

Gianfranco Scorrano ◽

Maria Venzin

Keyword(s):

Spin Polarization ◽

Electron Spin ◽

Nitroxide Radical ◽

Pair Interaction ◽

Electron Spin Polarization ◽

Time Resolved ◽

Triplet Pair ◽

Covalently Linked

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Polymorphism and structure–property relations

Polymorphism in Molecular Crystals ◽

10.1093/oso/9780199655441.003.0006 ◽

2020 ◽

pp. 273-341

Author(s):

Joel Bernstein

Keyword(s):

Second Harmonic ◽

Three Dimensional ◽

Spectroscopic Studies ◽

Photochemical Reactions ◽

Structure Property ◽

Time Resolved ◽

Property Relations ◽

High Pressure Studies ◽

Organic Magnetic Materials ◽

The One

Chapter 6 deals with the connection between the structure and properties of solids as revealed and studied in polymorphic systems. The subject is divided into properties that depend on the one hand on the bulk—that is, the three-dimensional arrangement of the molecules and the interactions among them—and on the other hand the consideration of the crystal as an “oriented gas” serving to act as a matrix for the molecules to permit the study of molecular properties. Among the properties described in the former category are electrical conductivity, organic magnetic materials, photovoltaicity and photoconductivity, second harmonic generation, chromoisomerism, photochromism, thermochromism and mechanochromism, and the mechanosalient effect. The latter category includes a discussion of spectroscopic studies (infrared, Raman, and ultraviolet/visible), excimer phenomena, time-resolved studies of excited states, photochemical reactions and thermal and gas reactions, along with a variety of emission phenomena. The chapter closes with a brief survey of rapidly emerging and developing high pressure studies

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