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Mileham ML, Park CD, van de Burgt LJ, et al. Photothermal initiation of hybrid organic/inorganic metastable interstitial composites: synergistic effects on the dynamics of energy release. J Phys Chem A. 2008;112(49):12568-71doi: 10.1021/jp8064344.
Mileham, M. L., Park, C. D., van de Burgt, L. J., Kramer, M. P., & Stiegman, A. E. (2008). Photothermal initiation of hybrid organic/inorganic metastable interstitial composites: synergistic effects on the dynamics of energy release. The journal of physical chemistry. A, 112(49), 12568-71. https://doi.org/10.1021/jp8064344
Mileham, Melissa L, et al. "Photothermal initiation of hybrid organic/inorganic metastable interstitial composites: synergistic effects on the dynamics of energy release." The journal of physical chemistry. A vol. 112,49 (2008): 12568-71. doi: https://doi.org/10.1021/jp8064344
Mileham ML, Park CD, van de Burgt LJ, Kramer MP, Stiegman AE. Photothermal initiation of hybrid organic/inorganic metastable interstitial composites: synergistic effects on the dynamics of energy release. J Phys Chem A. 2008 Dec 11;112(49):12568-71. doi: 10.1021/jp8064344. PMID: 18942803.
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J Phys Chem A. 2008 Dec 11;112(49):12568-71. doi: 10.1021/jp8064344.

Photothermal initiation of hybrid organic/inorganic metastable interstitial composites: synergistic effects on the dynamics of energy release.

The journal of physical chemistry. A

Melissa L Mileham, Chi-Dong Park, Lambertus J van de Burgt, Michael P Kramer, A E Stiegman

Affiliations

  1. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA.

PMID: 18942803 DOI: 10.1021/jp8064344

Abstract

The organic high-energy material pentaerythritol tetranitrate (PETN) was incorporated at low concentrations into Al (100 nm)/Fe(2)O(3) metastable intersitital composites (MIC) to form a hybrid organic/inorganic high-energy material. Studies of the dynamics of energy release were carried out by initiating the reaction photothermally with a single 8 ns pulse of the 1064 nm fundamental of a Nd:YAG laser. The reaction dynamics were measured using time-resolved spectroscopy of the light emitted from the deflagrating material. Two parameters were measured: the time to initiation and the duration of the deflagration. The presence of small amounts of PETN (16 mg/g of MIC) results in a dramatic decrease in the initiation time. This is attributed to a contribution to the temperature of the reacting system from the combustion of the PETN that, at lower loadings, appears to follow an Arrhenius dependence. The presence of PETN was also found to reduce the energy density required for single-pulse photothermal initiation by an order of magnitude, suggesting that hybrid materials such as this may be engineered to optimize their use as an efficient photodetonation medium.

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