ChemInform Abstract: ELECTRON TRANSFER IN THE QUENCHING OF TRIPLET METHYLENE BLUE BY COMPLEXES OF IRON(II)

1980 ◽  
Vol 11 (40) ◽  
Author(s):  
T. OHNO ◽  
N. N. LICHTIN
Keyword(s):  
Methylene Blue ◽  
Electron Transfer

scholarly journals A carbon membrane-mediated CdSe and TiO2 nanofiber film for enhanced photoelectrochemical degradation of methylene blue

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 11872-11881
Author(s):  
Xinye Zhang ◽  
Xueyue Zhang ◽  
Keting Feng ◽  
Xiaoyun Hu ◽  
Jun Fan ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Electron Transfer ◽  
Carbon Membrane ◽  
Carrier Transfer ◽  
Tio2 Nanofiber ◽  
Transfer Channel ◽  
Nanofiber Film ◽  
Degradation Ability

A CdSe/C/TiO2 nanofiber film was prepared for enhanced photoelectrochemical degradation ability, and carbon membrane as a carrier-transfer-channel could promote electron transfer.

Methylene Blue Sensitized Degradation of Sodium Hyaluronate through Photoinduced Electron Transfer

2000 ◽  
Vol 29 (4) ◽  
pp. 354-355
Author(s):  
Masanobu Kojima ◽  
Tomoko Takagi ◽  
Chie Matsubara ◽  
Kimitoshi Nakamura
Keyword(s):  
Methylene Blue ◽  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Sodium Hyaluronate

Ultrafast electron transfer between methylene blue and liquid anilines

1998 ◽  
Vol 293 (5-6) ◽  
pp. 343-351 ◽  
Author(s):  
D.P. Andrews ◽  
G.G. McFadyen ◽  
G.S. Beddard
Keyword(s):  
Methylene Blue ◽  
Electron Transfer ◽  
Ultrafast Electron Transfer

Photochemical Electron Transfer in the System Polypyrrole-Methylene Blue

1994 ◽  
Vol 47 (6) ◽  
pp. 1163 ◽  
Author(s):  
D Matthews ◽  
A Altus ◽  
A Hope
Keyword(s):  
Methylene Blue ◽  
Electron Transfer ◽  
Absorption Spectrum ◽  
Absorption Spectra ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Vitamin K1 ◽  
Photochemical Reduction ◽  
Long Chain

Methylene Blue incorporated into colloidal oxidized polypyrrole was investigated by absorption spectroscopy and laser flash photolysis. The absorption spectra of Methylene Blue and polypyrrole were unaffected by incorporation. Flash photolysis transients of Methylene Blue and triplet Methylene Blue in ethanol were affected by 1,4-benzoquinone and 1,4-benzoquinol but not by the long-chain naphthoquinone Vitamin K1. Incorporation of Methylene Blue in polypyrrole produced distinct changes in the flash photolysis transients of Methylene Blue and triplet Methylene Blue. Very long-lived transients, with lifetimes of the order of 10 ms, were observed. These effects were accompanied by long-lived changes in the absorption spectrum of Methylene Blue. The transients were modified by the addition of 1,4-benzoquinone but not 1,4-benzoquinol. The results indicate photochemical reduction of oxidized polypyrrole by triplet Methylene Blue with the production of stable long-lived species capable of reducing 1,4-benzoquinone.

Semiconducting Polymer Dot-Based Ratiometric Fluorescence Nanoprobe for DNA Detection

2021 ◽  
Vol 21 (11) ◽  
pp. 5776-5783
Author(s):  
Zhen-Hu Gong ◽  
Zong-Nan Wei ◽  
Yi-Zhang Liu ◽  
Lu-Fei Xiao
Keyword(s):  
Methylene Blue ◽  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Deoxyribonucleic Acid ◽  
Experimental Conditions ◽  
Semiconducting Polymer ◽  
Electron Transfer Mechanism ◽  
Fluorescence Nanoprobe ◽  
Polymer Dots ◽  
Semiconducting Polymer Dots

A ratiometric fluorescent deoxyribonucleic acid probe was synthesized using the photoinduced electron transfer mechanism, involving the interactions between different fluorescent components and electron acceptors. Double-emission carboxyl functionalized semiconducting polymer dots were synthesized using the nanoprecipitation method and applied as the flurophore, while methylene blue was used as the electron acceptor. Photoinduced electron transfer between different polymer dots components and methylene blue can achieve ratiometric modulation of the overall fluorescence in the system. The addition of deoxyribonucleic acid restores the fluorescence intensity, because the stronger interactions between deoxyribonucleic acid and methylene blue results in methylene blue being separated from the polymer dots. Under the optimized experimental conditions, system fluorescence was restored to its maximum when the concentration of deoxyribonucleic acid reached 200 nM, the linear range was 0.006-200 nM (R2 = 0.995). This probe was reasonably free from interference, showing a good response to deoxyribonucleic acid, with strong application data from actual samples.

A thin CdSe shell boosts the electron transfer from CdTe quantum dots to methylene blue

Nanoscale ◽  
2018 ◽  
Vol 10 (4) ◽  
pp. 2162-2169 ◽  
Author(s):  
L. Dworak ◽  
S. Roth ◽  
M. P. Scheffer ◽  
A. S. Frangakis ◽  
J. Wachtveitl
Keyword(s):  
Methylene Blue ◽  
Quantum Dots ◽  
Electron Transfer ◽  
Charge Transfer ◽  
Cdte Quantum Dots ◽  
Type Ii ◽  
Cdte Nanocrystals ◽  
Transfer Properties

The CdSe coating of CdTe nanocrystals produces quasi type-II quantum dots with improved charge transfer properties.

Sign in / Sign up

Export Citation Format

Share Document