Supramolecular ordering through axial interactions in mono and mixed valent metellomesogenic systems of platinum(II) and platinum(IV)

MX chain interactions lead to formation of anisotropic materials with possible optical, semiconducting, and device miniaturization applications. These interactions are explored in a variety of PtII/PtIV systems. Platinum N-R-salicylaldimine complexes, Pt(sal- R)2, are candidates for formation of MX chain materials based on their structural and electronic properties, as determined by density functionl theory (DFT) calculations. The trans geometry of Pt(sal-n-Bu)2Cl2, determined by single-crystal X-ray diffraction (XRD), is compatible with MX chain formation. Electrochemical analysis of M(sal-R)2 complexes results in electro-oxidative polymerization. The mechanism for polymerization is discussed. Pt(sal-R)2 (R = n-Bu, n-Dec, Ph) complexes are determined to oxidize at less positive potentials than Ni(sal-Ph)2 (0.66, 0.65, 0.61, and 0.59 V, respectively). DFT calculations of Pt(sal-Me)2 and Ni(sal-Me)2 determine a dpi* and pi*(ligand) HOMO composition consistent with the observed oxidation potentials. Platinum dialkyl-2,2'-bipyridine-4,4'-dicarboxylates (Ln, n = number of carbon atoms in the alkyl chain) are analyzed for their potential to form liquid crystalline MX chain interactions. Crystal structures of PtL1Cl2, PtL2Cl2, and PtL16Cl2 are presented. The new PtLnCl4 complexes (n = 10, 12, 16, 20) display smectic mesophases (30-194 degree C overall). Mesophase ordering is believed to occur through pi-pi interactions of adjacent bipyridine moieties. Re(CO)3LnBr and CdLnCl2 complexes (n = 12, 18) were prepared to study the tolerance of the mesophase to different metal geometries. Through optical microscopic and differential scanning calorimetry (DSC) analyses, Re(CO)3L18Br is determined to be mesogenic, while the Cd complexes are not. The PtL16Cl2/PtL16Cl4 molecular alloy forms a ColH mesophase. This is the first binary liquid crystalline system to include a PtIV component. DSC analyses of the enthalpy change associated with mesophase formation and XRD analyses suggest a 1:1 PtL16Cl2/PtL16Cl4 alloy consistent with formation of the first MX interactions in a liquid crystalline phase. Solid-state PtL16Cl2 and PtL16Cl4 complexes were characterized by luminescence spectroscopy, and both complexes demonstrates evidence of a CT lowest energy excited state consistent with DFT calculations of PtL1Cl2 and PtL1Cl4 orbitial energies. The longer-lived emission from mixtures of PtL16Cl2 and PtL16Cl4 is enhanced in intensity compared to emission from the individual species. Samples that have self-assembled into the PtL16Cl2/PtL16Cl4 alloy do not luminesce

Passion in the Workplace: Empirical Insights from Team Sport Organisations

Although sport management scholars have focused on a fairly wide number of psychologically-related constructs in the workplace, passion has not been part of this research agenda. The present study is the first attempt to fill this gap by exploring employees’ passion in the workplace setting of sport organisations. It does so by applying for the first time the dualistic model of passion developed by Vallerand et al. (2003), which measures two distinct types of passion: harmonious and obsessive. Online survey data were gathered from administrative employees in the United Kingdom’s football industry, responsible for either business-related functions or the clubs’ social agenda (N=236) in order to measure the passion experienced by individuals guided by different institutional logics. The particular instrument has two components: harmonious and obsessive passion towards the job. Besides the passion scales, the survey contained measures related to demographic variables (e.g., age, gender and education), to employment position in the organisation and to previous job experience. Data were statistically analysed in Confirmatory Factor Analysis (CFA) and analysis of variance, using SPSS and Amos 18.0. To determine the effect of contextual variables on the passion for the job, t-test and ANOVA were also used. Both groups of employees are passionate about their job. They remain harmoniously passionate throughout their career and show low level of obsessive passion. The type of work activities influences both levels of harmonious and obsessive passion experienced by personnel within sport organisations with employees responsible for the social agenda being slightly more harmoniously and obsessively passionate compared to those responsible for the business agenda. Vallerand et al.’s (2003) dualistic model of passion has been adapted to measure passion at workplace within sport organisations. The particular working environment that forms these organisations attracts and/or facilitates employees to experience a positive work–life balance

Chocolate for a mother's heart. : Kumpulan kisah penuh inspirasi tentang kasih ibu.

Jakarta265 p.; 21 cm

CHOCOLATE FOR A TEEN'S HEART

273 hlm;14 x 21 c

Chocolate for a woman's soul: Kisah nyata yang menghangatkan hati dan menjadi santapan bagi jiwa

Jakarta349 p.; 21 c

THE DISTRIBUTION OF PINACEAE IN AND NEAR NORTHERN NEVADA

Volume: 20Start Page: 12End Page: 2