Current Physical Chemistry - Volume 1, Issue 2, 2011

In order to examine new spectroscopic properties about intermolecular interactions, we prepared four Pd(II) complexes, trans-[Pd(phent)2(R-phenea)2] (1), trans-[Pd(phent)2(R-phenea)(S-phenea)] (2), trans-[Pd(succim)2 (12diphenea)2] (3), and trans-[Pd(succim)2(CH3NH2)2] (4), and we detected intensity and shift of absorption and fluorescence spectra with some photochromic dyes, azobenzene (AZ), stilbene (ST), 4-[eth Read More

A series of organic/inorganic hybrid materials containing two kinds of chiral Schiff base Mn(II) complexes, 1 and 2, with the photochromic compounds stilbene (ST) or 1,3,3-trimethylindolino-6'-nitrobenzopyrylospiran (SP) cast into polymethyl methacrylate (PMMA) films were prepared. To understand the efficiency of increasing optical anisotropy of ST or SP resulting from polarized UV light irradiation, we investigated the Read More

The importance of nonfouling (bioadhesion-resistant) coatings of solid surfaces has been emerging in various fields ranging from biomedicine to shipbuilding. Although a large number of approaches to endow the solid surfaces with bioinertness have been reported, a thorough understanding of the mechanism underlying the bioinertness of surfaces at a molecular level has not been achieved. Self-assembled monolayers (SAM Read More

The role of lateral terminal (X2 and X3) and terminal (X1) positions of aryl ring on the second-order nonlinear optical (NLO) properties of arylimido derivatives of hexamolybdates have been examined by using time-dependent density functional response theory (TD-DFT). This group of organic-inorganic hybrid compounds holds considerable large molecular second-order NLO response, especially [Mo6O18 (NC6H2 (NH2)3)]2- (sy Read More

A micro static-bomb combustion calorimeter has been developed in our laboratory designing one small cell to obtain combustion heats, which requires only a smaller sample quantity. The energy equivalent of the combustion system has been provided with a new micro-bomb. In the best conditions of operation, the energy equivalent of this calorimetric arrangement is just ε(calor)= (1,1679 ± 0,0004) kJK-1, which means a Read More

Five levels for emphasizing the electronegativity and chemical hardness quantum chemical differences were reviewed: the analysis of their quantum definitions in Fock space, their reliability in providing atomic patterns of periodicity within density functional softness as well as the semiclassical quantum propagator/Green function based theories as compared to the traditional finite difference methods based on ioni Read More

First derivative fluorescence spectroscopy was used to monitor the kinetics of SN38 hydrolysis in the presence and absence of serum albumins at physiological pH. In plain phosphate-buffered saline (PBS) pH 7.4, it was found that SN38-lactone hydrolysis exhibited a positive Enthalpy (12.08 ± 3.8 kJ · mol-1) and Entropy (54.40 ± 12.8 J · K-1 · mol-1) indicating that SN38-lactone hydrolysis is endothermic and entropically driven. H Read More

In 1998 the American Chemical Society and the Indian Association for the Cultivation of Science, Kolkata (India) designated the discovery of the Raman effect as an International Historic Chemical Landmark. Today it is well-known that Raman spectroscopy and Infrared spectroscopy are supplementary so far the chemical-structure analysis based on vibration of the atoms and molecules is concerned. In the present comm Read More

A transmission line model was employed to interpret the impedance response of pol(o-aminophenol) (POAP) film electrodes in contact with sulfate and benzenesulfonate (BS) solutions. These two different anions were chosen due to their different characteristics of size and electron distribution, which assures a different interaction with the redox centers of the polymer. Electron (De) and ion (Di) diffusion coefficient values were s Read More