Fluorescence quenching and electron transfer in poly(methacrylic acid) with covalently bound anthracenes

1989 ◽  
Vol 93 (5) ◽  
pp. 1928-1934 ◽  
Author(s):  
Rodney D. Stramel ◽  
S. E. Webber ◽  
M. A. J. Rodgers
Keyword(s):  
Electron Transfer ◽  
Fluorescence Quenching ◽  
Methacrylic Acid ◽  
Covalently Bound

The photo-initiation of the polymerization of vinyl compounds by means of cerous ions

1963 ◽  
Vol 275 (1361) ◽  
pp. 161-174 ◽  
Keyword(s):  
Electron Transfer ◽  
Fluorescence Quenching ◽  
Methacrylic Acid ◽  
Polymerization Reaction ◽  
Hydrogen Ions ◽  
Transfer Processes ◽  
Flash Technique ◽  
Electron Transfer Processes ◽  
Kinetics Of

The kinetics of the polymerization of acrylonitrile and methacrylic acid photosensitized by cerous ions have been studied. Cerous salts have been photolyzed in different media by means of the flash technique and ceric ions were produced, accompanied by fluorescence. Quenching of the fluorescence of the excited ceric species has been investigated with and without the presence of monomer and it has been demonstrated that hydrogen ions are necessary for the polymerization reaction to proceed. The results are consistent with the following electron transfer processes: Ce 3+ . HOH + hv ^+ (Ce 4+ . HOH - )*, Ce 4+ . HOH - )* hv ^+ Ce 3+ . HOH+ hv ", Ce 4+ . HOH - )* +H + ->Ce 4+ . H 2 O+H', Ce 4+ . HOH - )* +H + + M ->Ce 4+ +H 2 M H', where M = monomer.

Triplet-state electron transfer in poly(methacrylic acid) with covalently bound phenanthrene and naphthalene

1991 ◽  
Vol 95 (2) ◽  
pp. 960-965 ◽  
Author(s):  
Prabir K. Chatterjee ◽  
Keiko Kamioka ◽  
James D. Batteas ◽  
S. E. Webber
Keyword(s):  
Electron Transfer ◽  
Triplet State ◽  
Methacrylic Acid ◽  
State Electron ◽  
Covalently Bound

Formation of CT complexes and electron transfer from excited molecules of anthracene derivatives to methylviologen in aqueous and micellar media

1987 ◽  
Vol 52 (7) ◽  
pp. 1658-1665
Author(s):  
Viktor Řehák ◽  
Jana Boledovičová
Keyword(s):  
Electron Transfer ◽  
Complex Formation ◽  
Fluorescence Quenching ◽  
Rate Constant ◽  
Formation Constants ◽  
Dynamic Quenching ◽  
Micellar Media ◽  
Complex Formation Constants ◽  
Anthracene Derivatives ◽  
Ct Complexes

Disodium 1,5- and 1,8-anthracenedisulphonate (ADS) and 9-acetylanthracene form coloured CT complexes with methylviologen (MV2+) in aqueous and micellar media. The complex formation constants and molar absorptivities were determined by the Benesi-Hildebrandt method. In the fluorescence quenching, its static component plays the major role. The dynamic quenching component is determined by the rate constant of electron transfer from the S1 state of ADS to MV2+.

Fluoreszenzlöschung alternierender und nicht-alternierender polycyclischer aromatischer Kohlenwasserstoffe durch Nitroverbindungen / Fluorescence Quenching of Alternant and Non-alternant Polycyclic Hydrocarbons by Nitro Compounds

1977 ◽  
Vol 32 (12) ◽  
pp. 1561-1563 ◽  
Author(s):  
M. Zander
Keyword(s):  
Electron Transfer ◽  
Fluorescence Quenching ◽  
Excitation Energy ◽  
Reduction Potential ◽  
Nitro Compounds ◽  
Polycyclic Hydrocarbons ◽  
Electron Transfer Mechanism ◽  
Diffusion Controlled ◽  
Polycyclic Aromatic ◽  
Alternant Hydrocarbons

Abstract Fluorescence Quenching of Alternant and Non-alternant Polycyclic Hydrocarbons by Nitro Compounds Fluorescence quenching of polycyclic aromatic hydro­ carbons by nitromethane or nitrobenzene in fluid solutions is due to an electron transfer mechanism. The non diffusion controlled rate constant of quenching is very much greater for alternant than for non-alternant hydrocarbons with equal singlet excitation energy. This is explained by the known more positive reduction potential of non-alternant compared to alternant hydrocarbons.

Fluorescence quenching of aromatic molecules by SCN− in acetonitrile: effect of molecular size on electron transfer fluorescence quenching

1997 ◽  
Vol 276 (3-4) ◽  
pp. 210-216 ◽  
Author(s):  
Chika Sato ◽  
Koichi Kikuchi ◽  
Hiromi Ishikawa ◽  
Makio Iwahashi ◽  
Hiroshi Ikeda ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Fluorescence Quenching ◽  
Molecular Size ◽  
Aromatic Molecules

Photoinduced electron transfer between quantum dots and pralidoxime: an efficient sensing strategy

2017 ◽  
Vol 41 (19) ◽  
pp. 10828-10834 ◽  
Author(s):  
A. R. Jose ◽  
A. E. Vikraman ◽  
K. Girish Kumar
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Fluorescence Quenching ◽  
Photoinduced Electron Transfer ◽  
Cds Quantum Dots

Photoinduced electron transfer (PET)-mediated fluorescence quenching of CdTe/CdS quantum dots by pralidoxime (PAM).

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