Results 251 to 260 of about 561,896 (299)

Formation of Ion Pairs and Complex Coacervates

2015
Over the past several decades, there have been important advances in the field of transdermal drug delivery. However, for most drugs, the successful transdermal delivery is still limited due to the barrier function of the skin. The skin, especially its outermost layer, the stratum corneum (SC), poses a formidable barrier to the penetration of exogenous
Liang Fang, Honglei Xi, Dongmei Cun
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Ion-Pair Interactions of Lanthanide(III) Complexes in Aqueous Solutions

Inorganic Chemistry, 2000
The formation of ion-pair adducts between the cationic complex La(THP)3+ (THP = 1,4,7,10-tetrakis(2-hydroxypropyl)-1,4,7,10-tetraazacyclododecane) and the anionic complexes Tm(DOTA)- (DOTA = 1,4,7,10-tetraazacyclododecane-N,N',N",N"'-tetraacetate), Tm(DTPA)2- (DTPA = diethylenetriamine-N,N,N',N",N"-pentaacetate), Tm(TTHA)3- (TTHA ...
D M, Corsi, H, van Bekkum, J A, Peters
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Primary radical ion pairs in photosystem II core complexes

Biochemistry (Moscow), 2014
Ultrafast absorption spectroscopy with 20-fs resolution was applied to study primary charge separation in spinach photosystem II (PSII) reaction center (RC) and PSII core complex (RC complex with integral antenna) upon excitation at maximum wavelength 700-710 nm at 278 K. It was found that the initial charge separation between P680* and ChlD1 (Chl-670)
V A, Nadtochenko, I V, Shelaev, M D, Mamedov, A Ya, Shkuropatov, A Yu, Semenov, V A, Shuvalov   +5 more
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Ion pair complexes and anion binding in the solution of a ditopic receptor

Dalton Transactions, 2016
A comprehensive solid-state and solution study of a ditopic benzo-15-crown-5 bis-urea receptor L toward alkali halides has been presented.
Rissanen Kari, Mäkelä Toni
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Ion-Selective Membrane Electrodes Based on Ion-Pair Complexes: Correlations Between Slope of Electrodes and Stability of Ion-Pair Complexes

Instrumentation Science & Technology, 1999
Abstract A theoretical function model and four correlation equations between slope of electrode, and parameters such as: logβs (where βs is the stability constant of ion-pair complex), dipole moment (μ), molecular refraction coefficient (n20d), plasticizer polarity (er), and partition coefficient of various ions between solution and membrane (k) are ...
Raluca-Ioana Stefan, Hassan Y. Aboul-enein   +1 more
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Ion-Pairing Assemblies of Oxacorrole Ag^III Complex

Organic Letters
In this study, ion pairs of 10-oxacorrole AgIII complex as an aromatic [17]oxaannulene were synthesized, leveraging its small inner cavity. The cation formed solid-state ion-pairing assemblies whose packing structures were governed by the stacking of π-planes along with dipole-dipole, hydrogen-bonding, and C-H···π interactions, depending on the ...
Rima Sengupta, Kohei Kawami, Yukihide Ishibashi, Tsuyoshi Asahi, Hiromitsu Maeda   +4 more
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Lanthanoid — Transition‐Metal Complexes: From Ion Pairs to Extended Arrays

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Christine E, Plecnik, Shengming, Liu, Sheldon G, Shore   +2 more
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Ion Pair Complex for Drug Delivery System

2008
Isan Journal ofPharmaceutical Sciences, 4, 2, 140 ...
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Size-exclusion chromatography of lignin as ion-pair complex

Journal of Chromatography A, 1997
Abstract A high-performance ion-pair size-exclusion chromatography method was developed for analysis of underivatised lignin samples using styrene–divinylbenzene gel columns with tetrahydrofuran as solvent. An extraction method using the quaternary amine methyltrioctylammonium chloride allowed quantitative extraction of kraft lignin, lignosulfonic ...
A Majcherczyk, A Hüttermann
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Formation of a Ferric-Perchlorate Ion-Pair Complex

Nature, 1952
IN the course of a spectrophotometric investigation of the hydrolysis of the ferric ion in solutions of ionic strength greater than unity, evidence was obtained that ferric ions entered into complex formation with perchlorate ions. Although it has hitherto been widely assumed that perchlorate anions form no complexes, such interaction might well be ...
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