scholarly journals Novel quinoxaline based chemosensors with selective dual mode of action: nucleophilic addition and host–guest type complex formation

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 64009-64018 ◽  
Author(s):  
Marium Ishtiaq ◽  
Iqra Munir ◽  
Mariya al-Rashida ◽  
Maria Maria ◽  
Khurshid Ayub ◽  
...  
Keyword(s):  
Complex Formation ◽  
Fluorescence Quenching ◽  
Mode Of Action ◽  
Nucleophilic Addition ◽  
Dual Mode ◽  
H Nmr ◽  
Naked Eye ◽  
Type Complex

New quinoxalinium salts1–5have been exploited as chemosensorsvianaked eye, UV-Vis absorption, fluorescence quenching and1H NMR experiments.

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+.

Equilibrium thermodynamic studies for the formation of 1:1 complexes of CO and ethene with a rhodium(II) porphyrin metallo-radical

2001 ◽  
Vol 79 (5-6) ◽  
pp. 854-856 ◽  
Author(s):  
Leah Basickes ◽  
Andrew G Bunn ◽  
Bradford B Wayland
Keyword(s):  
Carbon Monoxide ◽  
Complex Formation ◽  
Equilibrium Thermodynamic ◽  
Nmr Studies ◽  
Thermodynamic Studies ◽  
H Nmr ◽  
Porphyrin Ligand ◽  
The One ◽  
Paramagnetic Shifts

Tetra(2,4,6 triisopropropyl phenyl)porphyrinatorhodium(II) ((TTiPP)RhII·1) is a persistent metal-centered radical with the odd electron in the rhodium(II) dz2 orbital. (TTiPP)RhII· forms 1:1 complexes with CO and CH2CH2 where the porphyrin ligand steric properties inhibit further reactions of the one-electron activated substrates. 1H NMR paramagnetic shifts at a series of temperatures are used in evaluating the thermodynamics for CO complex formation with 1 to form [(TTiPP)RhII(CO)]·2 (ΔH° = -5.5 ± 0.5 kcal mol-1; ΔS° = -9 ± 1 cal K-1 mol-1). Related 1H NMR studies show that the bonding of 1 with ethene is less favorable than CO.Key words: rhodium porphyrin, carbon monoxide, ethene, thermodynamics, complex formation, metal-centered radical.

scholarly journals Dual mode of action of Bt proteins: protoxin efficacy against resistant insects

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Bruce E. Tabashnik ◽  
Min Zhang ◽  
Jeffrey A. Fabrick ◽  
Yidong Wu ◽  
Meijing Gao ◽  
...  
Keyword(s):  
Mode Of Action ◽  
Dual Mode

Dual function of coronatine as a bacterial virulence factor against plants: possible COI1–JAZ-independent role

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 19404-19412 ◽  
Author(s):  
Syusuke Egoshi ◽  
Yousuke Takaoka ◽  
Hiroaki Saito ◽  
Yuuki Nukadzuka ◽  
Kengo Hayashi ◽  
...  
Keyword(s):  
Virulence Factor ◽  
Mode Of Action ◽  
Bacterial Virulence ◽  
Dual Function ◽  
Dual Mode ◽  
Bacterial Virulence Factor

A phytotoxin coronatine has a dual mode of action, triggering stomatal reopening through COI1–JAZ-dependent and independent pathways.

scholarly journals Stereocontrolled Total Synthesis of Muraymycin D1 Having a Dual Mode of Action against Mycobacterium tuberculosis

2016 ◽  
Vol 138 (39) ◽  
pp. 12975-12980 ◽  
Author(s):  
Katsuhiko Mitachi ◽  
Bilal A. Aleiwi ◽  
Christopher M. Schneider ◽  
Shajila Siricilla ◽  
Michio Kurosu
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Total Synthesis ◽  
Mode Of Action ◽  
Dual Mode

196 TAPENTADOL, A NOVEL CENTRALLY ACTING ANALGESIC: PRECLINICAL EVIDENCE FOR A DUAL MODE OF ACTION UNDERLYING ITS BROAD EFFICACY PROFILE

2006 ◽  
Vol 10 (S1) ◽  
pp. S54-S54 ◽  
Author(s):  
T.M. Tzschentke ◽  
J. Vry ◽  
T. Christoph ◽  
B. Kögel ◽  
K. Schiene ◽  
...  
Keyword(s):  
Mode Of Action ◽  
Dual Mode ◽  
Efficacy Profile
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