Material properties effecting energetic materials behavior

The overall goal of experiments with energetic materials is to establish a correlation between the behaviors and the properties of the materials. Analysis of the extensive database on energetic materials has led to correlations between both combustion behaviors (i.e. bum rates and detonation velocities) and sensitivities and the properties of the materials. The material properties that have been or can be correlated with behaviors of energetic materials in order of more detailed effects are heat content... 

As the effects of more microscopic and specific features of the enei getic material on the behaviors are probed, a more hmdamental understanding of the material properties that effect the energetic material behavior will be achieved. 

In this chapter we report on properties of nanometer-sized semiconductor particles in solution and in thin films and thereby concentrate on the photochemical, photophysical, and photoelectrochemical behavior of these particles. We shall, very briefly, describe the energetic levels in semiconductors and the size quantization effect. The bottleneck in small-particle research is the preparation of well-defined samples. As many preparative aspects are already reviewed in several actual assays, we present here only the preparative highlights of the last two years. In Section IV we describe the fluorescence properties of the particles. We report on different models for the description of the very complex fluorescence mechanism and we show how fluorescence can be utilized as a tool to learn about surface chemistry. Moreover, we present complex nanostructures consisting of either linked particles or multiple shells of different nanosized materials. The other large paragraph describes experiments with particles that are deposited on conductive substrates. We show how the combination of photoelectrochemistry and optical spectroscopy provides important information on the electronic levels as well as on charge transport properties in quantized particle films. We report on efficient charge separation processes in nanostructured films and discuss the results with respect to possible applications as new materials for optoelectronics and photovoltaics. 

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