Molecular Recognition Properties of a Charge-Transfer Host System Composed of 10,10′-Dihydroxy-9,9′-biphenanthryl and Viologen Derivatives

2008 ◽  
Vol 2008 (28) ◽  
pp. 4784-4789 ◽  
Author(s):  
Yoshitane Imai ◽  
Kensaku Kamon ◽  
Shingo Kido ◽  
Tomohiro Sato ◽  
Nobuo Tajima ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Molecular Recognition ◽  
Host System ◽  
A Charge

A Charge-Transfer Complex of 10,10‘-Dihydroxy-9,9‘-biphenanthryl and Methylviologen as a Visual Inclusion Host System

2007 ◽  
Vol 9 (24) ◽  
pp. 5047-5050 ◽  
Author(s):  
Yoshitane Imai ◽  
Shingo Kido ◽  
Kensaku Kamon ◽  
Takafumi Kinuta ◽  
Tomohiro Sato ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Host System ◽  
A Charge

A charge-transfer host system composed of a chiral 1,1′-bi-2-naphthol cluster and benzylviologen

Tetrahedron ◽  
2007 ◽  
Vol 63 (48) ◽  
pp. 11928-11932 ◽  
Author(s):  
Yoshitane Imai ◽  
Kensaku Kamon ◽  
Takafumi Kinuta ◽  
Nobuo Tajima ◽  
Tomohiro Sato ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Host System ◽  
A Charge

Multiple Molecular Recognition Host System using Charge-Transfer Complex of 3,3′-Disubstituted-1,1′-bi-2-naphthol and Methylviologen

2009 ◽  
Vol 9 (9) ◽  
pp. 4096-4101 ◽  
Author(s):  
Yoshitane Imai ◽  
Kensaku Kamon ◽  
Takafumi Kinuta ◽  
Nobuo Tajima ◽  
Tomohiro Sato ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Molecular Recognition ◽  
Charge Transfer Complex ◽  
Host System

Colored Supramolecular Host System Using a Charge-Transfer Complex Composed of 1,1′-Bi-2-naphthol and 2,5-Substituted 1,4-Benzoquinone

2009 ◽  
Vol 2009 (15) ◽  
pp. 2519-2525 ◽  
Author(s):  
Yoshitane Imai ◽  
Kensaku Kamon ◽  
Takafumi Kinuta ◽  
Tomohiro Sato ◽  
Nobuo Tajima ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Host System ◽  
A Charge

Determination of Epsilon Aminocaproic Acid Based on Charge Transfer Complexation with p-Nitrophenlol by Spectrophotometry

2020 ◽  
Vol 16 ◽  
Author(s):  
Sheng-Yun Li ◽  
Fang Tian
Keyword(s):  
Charge Transfer ◽  
Aminocaproic Acid ◽  
Concentration Limit ◽  
Official Method ◽  
Good Precision ◽  
Pharmaceutical Dosage Forms ◽  
Relative Standard ◽  
A Charge ◽  
Epsilon Aminocaproic Acid

: A spectrophotometry was investigated for the determination of epsilon aminocaproic acid (EACA) with p-nitrophenol (PNP). The method was based on a charge transfer (CT) complexation of this drug as n-electron donor with π-acceptor PNP. Experiment indicated that the CT complexation was carried out at room temperature for 10 minutes in dimethyl sulfoxide solvent. The spectrum obtained for EACA/PNP system showed the maximum absorption band at wavelength of 425 nm. The stoichiometry of the CT complex was found to be 1:1 ratio by Job’s method between the donor and the acceptor. Different variables affecting the complexation were carefully studied and optimized. At the optimum reaction conditions, Beer’s law was obeyed in a concentration limit of 1～6 µg mL-1. The relative standard deviation was less than 2.9%. The apparent molar absoptivity was determined to be 1.86×104 L mol-1cm-1 at 425 nm. The CT complexation was also confirmed by both FTIR and 1H NMR measurements. The thermodynamic properties and reaction mechanism of the CT complexation have been discussed. The developed method could be applied successfully for the determination of the studied compound in its pharmaceutical dosage forms with a good precision and accuracy compared to official method as revealed by t- and F-tests.

Fluorescence Quenching of Aminodiphenylamines with Chloromethanes

2002 ◽  
Vol 67 (8) ◽  
pp. 1154-1164 ◽  
Author(s):  
Nachiappan Radha ◽  
Meenakshisundaram Swaminathan
Keyword(s):  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Ground State ◽  
Rate Constants ◽  
Quenching Mechanism ◽  
Quenching Rate ◽  
Charge Transfer Interaction ◽  
Electronically Excited ◽  
A Charge

The fluorescence quenching of 2-aminodiphenylamine (2ADPA), 4-aminodiphenylamine (4ADPA) and 4,4'-diaminodiphenylamine (DADPA) with tetrachloromethane, chloroform and dichloromethane have been studied in hexane, dioxane, acetonitrile and methanol as solvents. The quenching rate constants for the process have also been obtained by measuring the lifetimes of the fluorophores. The quenching was found to be dynamic in all cases. For 2ADPA and 4ADPA, the quenching rate constants of CCl4 and CHCl3 depend on the viscosity, whereas in the case of CH2Cl2, kq depends on polarity. The quenching rate constants for DADPA with CCl4 are viscosity-dependent but the quenching with CHCl3 and CH2Cl2 depends on the polarity of the solvents. From the results, the quenching mechanism is explained by the formation of a non-emissive complex involving a charge-transfer interaction between the electronically excited fluorophores and ground-state chloromethanes.

Charge-transfer induced multifunctional BCP:Ag complexes for semi-transparent perovskite solar cells with a record fill factor of 80.1%

2021 ◽  
Author(s):  
Zhiqin Ying ◽  
Xi Yang ◽  
Jingming Zheng ◽  
Yudong Zhu ◽  
Jingwei Xiu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Buffer Layer ◽  
Fill Factor ◽  
Perovskite Solar Cells ◽  
A Charge

A charge-transfer induced BCP:Ag complex is employed as a multifunctional buffer layer for efficient inverted semi-transparent perovskite solar cells.

scholarly journals Multi-configurational Ehrenfest simulations of ultrafast nonadiabatic dynamics in a charge-transfer complex

2018 ◽  
Vol 149 (24) ◽  
pp. 244107 ◽  
Author(s):  
Tianji Ma ◽  
Matteo Bonfanti ◽  
Pierre Eisenbrandt ◽  
Rocco Martinazzo ◽  
Irene Burghardt
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Nonadiabatic Dynamics ◽  
A Charge
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