نتایج جستجو برای: intramolecular proton transfer ipt

تعداد نتایج: 361252  

Journal: :Helvetica Chimica Acta 2022

We present the concept of combining circularly polarized luminescence (CPL) and excited-state intramolecular proton transfer (ESIPT) features into a single molecule as strategy to generate high-performance ESIPT-based CPL materials. For this purpose, [6]helicene bearing two ESIPT structural units was synthesized using double Suzuki–Miyaura reaction C(sp2)−H hydroxylation approach. The photophys...

2016
Chung-Chuan Hou Kuei-Yuan Chang Chunhua Liu

Abstract: This study presents an inductive power transfer (IPT) system for electric vehicles (EVs) based on EE-shaped ferrite cores. The issues of the IPT system such as efficiency, air gap, displacement, dislocation, and motion are discussed. Furthermore, finite element analysis software is utilized to simulate the IPT system operated under large air gap conditions. Simulation and measurement ...

Journal: :The Journal of biological chemistry 2002
Chingkuang Tu Minzhang Qian Haiqian An Nina R Wadhwa David Duda Craig Yoshioka Yashash Pathak Robert McKenna Philip J Laipis David N Silverman

We have prepared a site-specific mutant of human carbonic anhydrase (HCA) II with histidine residues at positions 7 and 64 in the active site cavity. Using a different isozyme, we have placed histidine residues in HCA III at positions 64 and 67 and in another mutant at positions 64 and 7. Each of these histidine residues can act as a proton transfer group in catalysis when it is the only nonlig...

Journal: :Journal of the American Chemical Society 2004
Baudouin Gerard Guilford Jones Ii John A Porco

A unified biomimetic approach to the aglain-forbaglin-rocaglamide classes of natural products is reported. The approach involves photogeneration of oxidopyryliums via excited-state intramolecular proton transfer (ESIPT) of 3-hydroxyflavones followed by [3+2] dipolar cycloaddition to the aglain core. An alpha-ketol (acyloin) rearrangement was employed to transform the aglain core to the rocaglam...

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