We describe the content and organization of a series of daylong field trips to a university for high school students that connect chemistry content to issues of sustainability. The seven laboratory activities are in the areas of environmental degradation, energy production, and green chemistry. The laboratory procedures have been modified from published procedures so that the length and scope would be appropriate for our format and audience (AP and college preparatory chemistry and environmental science students). While students spend the majority of their time at the university in the laboratory, connections between the chemistry content and sustainability are highlighted in the previsit reading assignments, prelab discussion, and postlab small group discussion. Results of formative assessment are presented, as are considerations for other institutions that may be interested in developing and maintaining a similar program.

A probabilistic approach to characterizing transit times for quantum particles is generalized to a system of more than two spatial regions and applied to the transport of charge in donor-bridge-acceptor systems. The approach is based on applying conditional probability analysis to a discrete representation of the time-dependent probability density as generated by numerical solution of the time-dependent Schrödinger equation for an initially localized electron. To carry out this analysis, it is first necessary to cast the conditional probability analysis approach in matrix form. The results afford a quantification of the electron transit time and may provide a tool to gain insight into the mechanism of charge transport.

No abstract

No abstract

No abstract