Wichita State University

About: Wichita State University is a education organization based out in Wichita, Kansas, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 4988 authors who have published 9563 publications receiving 253824 citations. The organization is also known as: WSU & Fairmount College.

Design and studies on supramolecular ferrocene-porphyrin-fullerene constructs for generating long-lived charge separated states.

Abstract: Supramolecular ferrocene-porphyrin-fullerene constructs, in which covalently linked ferrocene-porphyrin-crown ether compounds were self-assembled with alkylammonium cation functionalized fullerenes, have been designed to achieve stepwise electron transfer and hole shift to generate long-lived charge separated states. The adopted crown ether-alkylammonium cation binding strategy resulted in stable conjugates as revealed by computational studies performed by the DFT B3LYP/3-21G(*) method in addition to the binding constants obtained from fluorescence quenching studies. The free-energy changes for charge-separation and charge-recombination were varied by the choice of different metal ions in the porphyrin cavity. Free-energy calculations suggested that the light-induced electron-transfer processes from the singlet excited state of porphyrins to be exothermic in all of the investigated supramolecular dyads and triads. Photoinduced charge-separation and charge-recombination processes have been confirmed by the combination of the time-resolved fluorescence and nanosecond transient absorption spectral measurements. In case of the triads, the charge-recombination processes of the radical anion of the fullerene moiety take place in two steps, viz., a direct charge recombination from the porphyrin cation radical and a slower step involving distant charge recombination from the ferrocene cation moiety. The rates of charge recombination for the second route were found to be an order of magnitude slower than the former route, thus fulfilling the condition for charge migration to generate long-lived charge-separated states in supramolecular systems.

The Motivational Properties of Tangible Incentives

Abstract: Employers who spend considerable sums on noncash tangible incentives need to document their effectiveness and investigate the best means of delivery.

Building customer relationships: an inventory of service providers’ objectives and practices

Abstract: A study of 205 US commercial service providers, representing 31 two‐digit SIC codes, identified companies’ customer relationship‐building objectives and practices. Of 42 possible relationship‐building objectives, the four rated as top priorities were: encouraging customers to think of the firm first when considering a purchase; providing better service; encouraging customers to speak favorably about the firm; and encouraging customers to trust the firm. Answers to open‐ended, exploratory questions revealed 18 categories of relationship‐building initiatives. The findings suggest that “customer relationship‐building” means different things to different people and that practices to build such relationships vary considerably. By inventorying the range of relationship‐building objectives, quantifying their priority levels, and identifying specific practices used to build customer relationships, a greater understanding of current practices was achieved. Thus, the findings promise to benefit researchers, practit...

Social class and adolescents' self-esteem: another look*

Abstract: Using nontraditional measures of parental social class (father's unemployment status, neighborhood unemployment, family welfare status, and neighborhood evaluation), we replicate and extend Rosenberg and Pearlin's study of social class and self-esteem among children and adults. Nontraditional class measures are expected to show stronger effects on adolescents' global self-esteem than do traditional class measures because a greater social stigma is attached to them. We also explore the effects of more proximate school and social experiences and their ability to moderate effects of parental social class on self-esteem. We find the following: 1) father's education has a small effect on adolescents' self-esteem, as in Rosenberg and Pearlin's results; 2) nontraditional class measures have moderate effects on self-esteem, withl one exception (neighborhood unemployment strongly affects adolescents' self-esteem); and 3) direct support exists for a self-perception interpretation of the relative effects of parental and adolescent variables on adolescents' self-esteem: adolescent variables have somewhat stronger effects than parental class variables and mediate the impact of parental social status on self-esteem. Rosenberg and Pearlin's (1978) nowclassic study of social class and the selfesteem of children, adolescents, and adults remains a valuable model for researchers intrigued with the problem of relating personality to social structure. In that study, Rosenberg and Pearlin bring theoretical order to the literature on social class and self