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Sustainable rosin acid ester as internal electron donors in Ziegler-Natta catalysts for synthesis of isotactic polypropylene with high melt flow rate
Bio-derived rosin acid esters internal electron donors Ziegler-Natta catalyst polypropylene polymerization
2023/12/11
In this contribution, novel bio-derived rosin acid ester compounds have been developed and used as internal electron donors to prepare MgCl2?supported titanium catalysts for propylene polymerization. ...
Electron Compensation Effect Suppressed Silver Ion Release and Contributed Safety of Au@Ag Core-Shell Nanoparticles
Au@Ag core-shell electron compensation safety biomedical application
2023/6/21
Silver nanoparticles (Ag NPs) have promising plasmonic properties, however, they are rarely used in biomedical applications because of their potent toxicity. Herein, an electron compensation effect fr...
Is an electron a charge cloud?A reexamination of Schrodinger's charge density hypothesis
Schrö dinger electron cloud charge cloud charge density hypothesis protective measurement ergodic motion particles
2016/6/13
This article re-examines Schrödinger's charge density hypothesis, according to which the charge of an electron is distributed in the whole space, and the charge density in each position is propor...
Is the electron's charge 2e?A problem of the de Broglie-Bohm theory
de Broglie-Bohm theory protective measurement wave function Bohmian particles charge density
2016/5/30
It is shown that the de Broglie-Bohm theory has a potential problem concerning the charge distribution of a quantum system such as an electron. According to the guidance equation of the theory, the el...
Photochemistry of a Bacterial Photosynthetic Reaction Center Missing the Initial Bacteriochlorophyll Electron Acceptor
Carbon nanotubes Composite Terahertz properties
2016/5/25
A novel chromophore composition of the bacterial photosynthetic reaction center (RC) has been discovered: RCs lacking the L-side monomeric bacteriochlorophyll chromophore result from mutation of the n...
Temperature Dependence of Electron Transfer to the M-Side Bacteriopheophytin in Rhodobacter capsulatus Reaction Centers
hydrogenation fatty acids stereoselectivity kinetics
2016/5/25
Subpicosecond time-resolved absorption measurements at 77 K on two reaction center (RC) mutants of Rhodobacter capsulatus are reported. In the D(LL) mutant the D helix of the M subunit has been substi...
High Yield of M-Side Electron Transfer in Mutants of Rhodobacter Capsulatus Reaction Centers Lacking the L-Side Bacteriopheophytin
Rhodobacter capsulatus Pheophytins Detergents Spectrum Analysis Oxidation-Reduction Mutation Plasmids Amino Acid Sequence Molecular Sequence Data Histidine
2016/5/24
We present studies on a series of photosynthetic reaction center (RC) mutants created in the background of the Rhodobacter capsulatus D(LL) mutant, in which the D helix of the M subunit has been subst...
Probing Excited-State Electron Transfer by Resonance Stark Spectroscopy:4.Mutations near BL in Photosynthetic Reaction Centers Perturb Multiple Factors that Affect BL/fBL+HL
Excited-State Electron Transfer Resonance Stark Spectroscopy Mutations near BL Photosynthetic Reaction Centers Perturb Multiple Factors BL/fBL+HL
2016/5/24
Stark spectra have been obtained in the region of absorption by the accessory bacteriochlorophylls (the B-band region around 800 nm) in Rhodobacter sphaeroides reaction centers. The Stark spectra in t...
Probing Excited-State Electron Transfer by Resonance Stark Spectroscopy:3.Theoretical Foundations and Practical Applications
contracted basis Lanczos algorithm methane vibrational spectroscopy
2016/5/24
Resonance Stark effects are nonclassical Stark effects associated with excited-state charge-transfer processes. The theory of resonance Stark effects developed in Part 2 of this series is generalized ...
Probing Excited State Electron Transfer by Resonance Stark Spectroscopy.II.Theory and Application
Excited State Electron Resonance Stark Spectroscopy Theory Application
2016/5/23
A theory of the resonance Stark effect data reported in part 1 (preceding paper in this issue) is developed. The model used involves a weak charge resonance interaction between the excited state of an...
Probing Excited State Electron Transfer by Resonance Stark Spectroscopy.I.Experimental Results for Photosynthetic Reaction Centers
adatoms bismuth photoelectron diffraction silicon
2016/5/23
Higher order Stark spectroscopy has recently been introduced and applied to characterize the electrooptic properties of chromophores in bacterial photosynthetic reaction centers.1 In the course of the...
Temperature Dependece of the Qy Resonance Raman Spectra of Bacteriochlorophylls,the Primary Electron Donor,and Bacteriopheophytins in the Bacterial Photosynthetic Reaction Center
Bacteriochlorophylls chemistry Electron Transport Infrared Rays Light-Harvesting Protein Complexes Pheophytins chemistry Photosynthetic Reaction Center Complex Proteins chemistry Research Support, U.S. Gov't, Non-P.H.S. Research Support,U.S. Gov't,P.H.S. Rhodobacter sphaeroides chemistry Spectrophotometry
2016/5/23
Qy-excited resonance Raman spectra of the accessory bacteriochlorophylls (B), the bacteriopheophytins (H), and the primary electron donor (P) in the bacterial photosynthetic reaction center (RC) of Rh...
Effects of Applied Electric Fields on the Quantum Yields for the Initial Electron Transfer Steps in Bacterial Photosynthesis:II.Dynamic Stark Effect
Applied Electric Fields Quantum Yields Initial Electron Transfer Steps Bacterial Photosynthesis Dynamic Stark Effect
2016/5/23
The quantum yield of the initial charge separation steps in bacterial photosynthetic reaction centers has been shown to be reduced in an applied electric field [Part I, Lao et al., J. Phys. Chem. 97 (...
Effects of Applied Electric Fields on the Quantum Yields of the Initial Electron-Transfer Steps in Bacterial Photosynthesis.1.Quantum Yield Failure
Applied Electric Fields Quantum Yields Initial Electron-Transfer Steps Bacterial Photosynthesis.1.Quantum
2016/5/23
The effect of an applied electric field has been measured for the quantum yield of formation of the P[sup +]H[sup [minus]], P[sup +]Q[sub A][sup [minus]], and [sup 3]P states of nonoriented Rb. sphaer...
Temperature Dependence of the Electric Field Modulation of Electron-Transfer Rates:Charge Recombination in Photosynthetic Reaction Centers
solar energy inorganic, organic, physical and analytical chemistry photosynthesis reaction kinetics electric fields electron transfer entropy experimental data free energy mathematical models
2016/5/23
The rates of electron-transfer reactions can be systematically varied by application of external electric fields. The electric field effect on the charge recombination rate constant of the state P[sup...