Particle size dependence of chemical compositions of metal-containing ultrafine particles synthesized from a gaseous mixture of iron pentacarbonyl and carbon disulfide

Morita, Hiroshi; Takeyasu, Youjirou; Šubrt, Ján

doi:10.1016/j.jphotochem.2007.12.008

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…Due to these characteristics inherent in the sedimentary particles, the particles can be utilized as building blocks of nanodevices, and in particular, metal containing aerosol particles are suitable for fabricating nanopatterns in nanolithography (Morita 1999). Using the photochemical method mentioned above, metal containing aerosol particles were synthesized from a gaseous mixture containing iron pentacarbonyl (Fe(CO) 5 ), cobalt tricarbonyl nitrosyl (Co(CO) 3 NO), and/or 2-propenyltrimethylsilane (allyltrimethylsilane) (ATMeSi) (Abe and Morita 2006;Morita et al 2006bMorita et al , 2008Morita et al , 2009. Because ATMeSi can ligate to metal atoms through π -coordination of allyl group and can incorporate into the nucleation reactions during aerosol particle formation, the addition of ATMeSi improved the efficiency of nucleation reactions (Morita and Ishikura 2005;Morita el al.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field Effect on Chemical Compositions of Magnetic Aerosol Particles Synthesized Photochemically from a Gaseous Mixture of Iron Pentacarbonyl and Trimethylsilyl Azide

Morita

Okano

Šubrt

2013

Aerosol Science and Technology

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Under intense UV light irradiation with an Nd:YAG laser at 355 nm, a gaseous mixture of iron pentacarbonyl (Fe(CO) 5 ) and trimethylsilyl azide (TMSAz) produced aerosol magnetic particles with diameters of 50-100 nm. Two photon absorption of TMSAz and Fe(CO) 5 took place efficiently to produce trimethylsilyl nitrene and iron carbonyls (Fe(CO) n n = 1-4). In cases where a partial pressure of TMSAz was high, nucleation reactions of aerosol particles proceeded via chemical reactions between trimethylsilyl nitrene and two iron carbonyls, resulting in bridging between two iron carbonyls by silyl nitrene. In cases where a partial pressure of TMSAz was low, the nucleation reactions proceeded via chemical reactions between two iron carbonyls, resulting in the formation of di-iron carbonyls with bridging >C O group. Both of these nucleation reactions took place concurrently during aerosol particle formation. From FT-IR spectral change of sedimentary particles produced under an external magnetic field of up to 5 T, it was found that application of an external magnetic field accelerated the latter chemical reaction to result in the appearance of bridging ν(>C O) band in FT-IR spectrum of the magnetic particles.

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Section: Introductionmentioning

confidence: 99%

Magnetic Field Effect on Chemical Compositions of Magnetic Aerosol Particles Synthesized Photochemically from a Gaseous Mixture of Iron Pentacarbonyl and Trimethylsilyl Azide

Morita

Okano

Šubrt

2013

Aerosol Science and Technology

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“…Using photochemical reactions of organometal compounds, metal containing fine particles were successfully synthesized from a gaseous mixture containing iron pentacarbonyl (Fe(CO) 5 ) and cobalt tricarbonyl nitrosyl (Co(CO) 3 NO) [1][2][3][4]. The particles thus synthesized can be utilized as building blocks of nano-devices and are suitable for fabricating nano-patterns in nano-lithography [5].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of Magnetic Ultrafine Particles Synthesized from a Gaseous Mixture of Iron Pentacarbonyl and Trimethylsilyl Azide

Morita

Okano

Udagawa

et al. 2013

J. Photopol. Sci. Technol.

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Under UV light irradiation with a mercury lamp at 313 nm, a gaseous mixture of iron pentacarbonyl (Fe(CO) 5) and trimethylsilyl azide (TMSAz) produced spherical aerosol particles with a mean diameter of 0.25 m. In the gas phase, production of hexamethyldisiloxane was identified to support for the photochemical reactions between TMSAz and Fe(CO) 4 taking place efficiently. During propagation process in aerosol particle formation, it was suggested that isocyanate (R-N=C=O) and Si-H chemical structures were produced to modify the chemical structures of aerosol particles. Under intense laser light irradiation at 355 nm with a Nd:YAG laser, a gaseous mixture of Fe(CO) 5 and TMSAz produced magnetic ultrafine particles. Magnetization of the deposited ultrafine particles was measured with a SQUID magnetometer, showing that super-paramagnetic ultrafine particles were produced in addition to ferromagnetic particles under a magnetic field of 1 ~ 4.5 T. Based on the nucleation reactions induced by trimethylsilyl nitrene and iron carbonyls (Fe(CO) n n=1~4) which were formed efficiently by two photon absorption of laser light, it was strongly suggested that ferromagnetic particles were produced via chemical reactions between trimethylsilyl nitrene and two iron carbonyls and super-paramagnetic particles, via chemical reactions between two iron carbonyls.

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Magnetic field effect on chemical compositions of spherical Fe/Co fine particles synthesized from a gaseous mixture of iron pentacarbonyl and cobalt tricarbonyl nitrosyl

Morita

Kasai

Šubrt

et al. 2009

Journal of Photochemistry and Photobiology A: Chemistry

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Particle size dependence of chemical compositions of metal-containing ultrafine particles synthesized from a gaseous mixture of iron pentacarbonyl and carbon disulfide

Cited by 6 publications

References 33 publications

Magnetic Field Effect on Chemical Compositions of Magnetic Aerosol Particles Synthesized Photochemically from a Gaseous Mixture of Iron Pentacarbonyl and Trimethylsilyl Azide

Magnetic Field Effect on Chemical Compositions of Magnetic Aerosol Particles Synthesized Photochemically from a Gaseous Mixture of Iron Pentacarbonyl and Trimethylsilyl Azide

Magnetic Properties of Magnetic Ultrafine Particles Synthesized from a Gaseous Mixture of Iron Pentacarbonyl and Trimethylsilyl Azide

Magnetic field effect on chemical compositions of spherical Fe/Co fine particles synthesized from a gaseous mixture of iron pentacarbonyl and cobalt tricarbonyl nitrosyl

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