Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/physreva.36.105 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Liquid-crystal-imprinted synthesis of chiral polypyrroles without a chiral centre using a two-step method of spark-discharge oligomerisation-electrochemical polymerisation.
Nanoscale
January 2025
Department of Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan.
Pyrrole in a cholesteric liquid crystal was discharged using a Tesla coil to generate pyrrole radicals, affording linear-shaped nano-ordered pyrrole oligomers. Subsequently, the electrochemical polymerisation of a pre-oriented pyrrole oligomer having good affinity for liquid crystals was performed to achieve polypyrrole-imprinted asymmetry from the cholesteric liquid crystal structure. The resultant polymers were analysed using polarising optical microscopy observations, scanning electron microscopy, electrochemistry, optical spectroscopy, and electron spin resonance.
View Article and Find Full Text PDFSynthesis and characterization of allomelanin model from 1,8-dihydroxynaphthalene autooxidation.
Sci Rep
January 2025
Faculty of Biochemistry, Biophysics and Biotechnology, Department of Plant Physiology and Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland.
In this work a novel method for synthesis of 1,8-dihydroxynaphthalene melanin was presented, as well as the physicochemical properties, molecular structure, and characteristics of the pigment. The proposed synthesis protocol is simple and cost-effective with no enzymes or catalysts needed. The final product is not adsorbed on any surface, since the pigment is the result of autooxidation of 1,8-dihydroxynaphthalene.
View Article and Find Full Text PDFMagic-NOVEL: Suppressing electron-electron coupling effects in pulsed DNP.
J Chem Phys
January 2025
Center for Quantum and Topological Systems, New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates.
Pulsed dynamic nuclear polarization (DNP) enhances the nuclear magnetic resonance sensitivity by coherently transferring electron spin polarization to dipolar coupled nuclear spins. Recently, many new pulsed DNP techniques such as NOVEL, TOP, XiX, TPPM, and BEAM have been introduced. Despite significant progress, numerous challenges remain unsolved.
View Article and Find Full Text PDFRoom-Temperature Optical Spin Polarization of an Electron Spin Qudit in a Vanadyl-Free Base Porphyrin Dimer.
J Am Chem Soc
December 2024
Department of Chemistry "U. Schiff", University of Florence & UdR INSTM Firenze, 50019 Sesto Fiorentino, Italy.
Photoexcited organic chromophores appended to molecular qubits can serve as a source of spin initialization or multilevel qudit generation for quantum information applications. So far, this approach has been primarily investigated in chromophore-stable radical systems. Here, we extend this concept to a linked oxovanadium(IV) porphyrin-free-base porphyrin dimer.
View Article and Find Full Text PDFTime-resolved transient optical and electron paramagnetic resonance spectroscopic studies of electron donor-acceptor thermally activated delayed fluorescence emitters based on naphthalimide-phenothiazine dyads.
Phys Chem Chem Phys
January 2025
College of Chemistry Beijing Normal University, Beijing 100875, P. R. China.
The photophysics of naphthalimide (NI)-phenothiazine (PTZ) dyads were investigated as electron donor-acceptor (D-A) thermally activated delayed fluorescence (TADF) emitters. Femtosecond transient absorption (fs-TA) spectra show that the photophysical processes in non-polar solvents are in singlet localized state (LE, = 0.8 ps) → Franck-Condon singlet charge separation state (CS, = 7.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!