Near‐Infrared and Visible Absorption Spectroscopy of Nano‐Energetic Materials Containing Aluminum and Boron

Yang, Yanqiang; Wang, Shufeng; Sun, Zhaoyong; Dlott, Dana D.

doi:10.1002/prep.200500001

Cited by 39 publications

(21 citation statements)

References 17 publications

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“…The peak absorption cross section of single particles can be calculated from the following eq , by analyzing the UV–vis absorption spectra at a known particle concentration. where α is the absorption coefficient, A is the absorbance value, L is the optical path, ρ is nanoparticle number density (i.e., the number of particles per unit volume), ρ n is the mass concentration of PFO/CN-PPV Pdots, m is the mass of a single particle, d is the mean diameter of Pdots, and ρ H 2 O is the mass density of water.…”

Section: Methodsmentioning

confidence: 99%

Two-Photon Semiconducting Polymer Dots with Dual-Emission for Ratiometric Fluorescent Sensing and Bioimaging of Tyrosinase Activity

et al. 2016

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Semiconducting polymer dots (Pdots) with one-, two-photon excitation and dual-emission have been synthesized by coprecipitation of two conjugated polymers including poly(9,9-dioctylfluorenyl-2,7-diyl) (PFO) and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-(1-cyanovinylene-1,4-phenylene)] (CN-PPV) and have been further functionalized with l-tyrosine methyl ester (Tyr-OMe) via electrostatic assembly for ratiometric fluorescent sensing and bioimaging of tyrosinase activity. Tyrosinase-catalyzed oxidation of Tyr-OMe effectively modulate the dual-emission fluorescence of PFO/CN-PPV@Tyr-OMe Pdots from orange to blue through a selective photoinduced electron transfer (PET) process. A two-photon ratiometric sensor at almost zero-background interference and bioimaging of tyrosinase activity have been demonstrated, suggesting the potential biomedical applications of the prepared functionalized Pdots.

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Section: Methodsmentioning

confidence: 99%

Two-Photon Semiconducting Polymer Dots with Dual-Emission for Ratiometric Fluorescent Sensing and Bioimaging of Tyrosinase Activity

et al. 2016

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“…The efficiency of absorption of the near-infra red and visible spectra by nanoparticles of Al and B embedded in nitrocellulose or Teflon oxidizers was studied in Ref. [189]. It was found that absorption strength is greater for Al nanoparticles as compared to bulk Al.…”

Section: Temperature Kmentioning

confidence: 98%

Metal-based reactive nanomaterials

Dreizin

2009

Progress in Energy and Combustion Science

809

376

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“…A methodology for studying shock initiation of thin RM layers using a very short laser pulse was developed . A picosecond laser flash heating vaporized the surface of an RM target.…”

Section: Characterization Of Rsmsmentioning

confidence: 99%

Reactive Structural Materials: Preparation and Characterization

Hastings

Dreizin

2017

Adv Eng Mater

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Reactive structural materials, which can serve both as structural elements as well as a source of chemical energy released upon initiation have emerged as an important class of metal-based composites for use in various energetic systems. Such materials rely on a variety of exothermic reactions, from oxidation to formation of metal-metalloid and intermetallic phases. The rates of these reactions are as important as the energy that may be released, in order for them to occur at the time scales compatible with the requirements of applications. Therefore, chemical composition, scale at which reactive components are mixed, and the structure and morphology of materials are important and can be controlled by the method of preparation and compaction of the composite materials. Methods of preparation of the composite structures are briefly reviewed as well as methods of characterization of their mechanical and energetic properties. In addition to common thermo-analytical and static mechanical property measurements, dynamic tests of mechanical properties as well as ignition and combustion experiments are necessary to understand the fragmentation, initiation, and heat release expected for these materials when they are stimulated by an impact, shock, or rapid heating. Reaction mechanisms are studied presently for the thin layers and small samples of reactive materials initiated in carefully designed experiments. In other experiments, impact and explosive initiation are characterized for larger material compacts in the conditions imitating practical scenarios. Examples of results describing thermal, impact, and explosive initiation of some of the reactive materials are presented.

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Near‐Infrared and Visible Absorption Spectroscopy of Nano‐Energetic Materials Containing Aluminum and Boron

Cited by 39 publications

References 17 publications

Two-Photon Semiconducting Polymer Dots with Dual-Emission for Ratiometric Fluorescent Sensing and Bioimaging of Tyrosinase Activity

Two-Photon Semiconducting Polymer Dots with Dual-Emission for Ratiometric Fluorescent Sensing and Bioimaging of Tyrosinase Activity

Metal-based reactive nanomaterials

Reactive Structural Materials: Preparation and Characterization

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