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Polarization-Dependent Photoluminescence of a Highly (100)-Oriented Perovskite Film.
Chemphyschem
February 2020
Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea.
Lead halide perovskite is one of the attractive functional materials owing to its outstanding opto-electronic properties, which have been addressed in numerous studies. This study aims to clarify the link between the growth pattern and the charge carrier related properties for the highly oriented perovskite film along the [100] direction. For this purpose, a CH NH PbI thin film mainly grown along the [100] direction was fabricated and subjected to spectroscopic analysis to understand the basic optoelectronic features of the oriented film.
View Article and Find Full Text PDFHydrogen Abstraction from the C15 Position of the Cholesterol Skeleton.
J Org Chem
December 2019
Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Camino de Vera s/n , 46022 Valencia , Spain.
Cholesterol () is an integral part of cell membrane, where it is prone to oxidation. In humans, oxidation of is commonly linked to various pathologies like Alzheimer's disease, atherosclerosis, and even cancer, which proceed via mechanisms involving enzymatic and free radical pathways. The latter begin with hydrogen abstraction (HA) from by a reactive free radical.
View Article and Find Full Text PDFProduct pair correlation in CH3OH photodissociation at 157 nm: the OH + CH3 channel.
Phys Chem Chem Phys
February 2011
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China.
The OH + CH(3) product channel for the photodissociation of CH(3)OH at 157 nm was investigated using the velocity map imaging technique with the detection of CH(3) radical products via (2+1) resonance-enhanced multiphoton ionization (REMPI). Images were measured for the CH(3) formed in the ground and excited states (v(2) = 0, 1, 2, and 3) of the umbrella vibrational mode and correlated OH vibrational state distributions were also determined. We find that the vibrational distribution of the OH fragment in the OH + CH(3) channel is clearly inverted.
View Article and Find Full Text PDFDistributions of angular anisotropy and kinetic energy of products from the photodissociation of methanol at 157 nm.
J Chem Phys
December 2004
National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30077, Taiwan.
We investigated distributions of angular-anisotropy parameter beta and kinetic energy of fragments after photodissociation of methanol using time-of-flight (TOF) mass spectrometry. Fragments, in particular CH(3)O and CO, were successfully detected using tunable radiation from a synchrotron for photoionization. Following O-H bond fission, a CH(3)O fragment with internal energy greater than 104 kJ mol(-1) dissociates to CH(2)O+H.
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