• Journal of Integrative Natural Science
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• v.3 no.4
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• pp.197-201
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• 2010

Dihydrotetraphenylgermole has been synthesized from the reduction of dichlorotetraphenylgermole with lithiumaluminiumhydride. UV-Vis absorption and photoluminescence was measured by using UV-Vis and fluorescence spectroscopy. Nanoparticles of dihydrotetraphenylsilole were synthesized from the mixture solution of water and THF. Photoluminescence behavior of organogermanium nanoparticle was investigated at various water fractions. Critical fraction of water to form organogermanium nanoparticles was 60%. Photoluminescence intensity of organogermanium nanoparticle was increased as the concentration of organogermanium nanocolloids increased. Photoluminescence efficiency of organogermanium nanoparticle at 90% water fraction increased about 100 times compared to that of molecular state.

• Bulletin of the Korean Chemical Society
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• v.30 no.12
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• pp.2890-2894
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• 2009

The larch-fruit-like acetylferrocene micro-nanomaterials and beltlike acetylferrocene micro-nanomaterials have been cross-correspondingly prepared in bidirection by the top-down and bottom-up approach, respectively, and characterized by scanning electron microscope, transmission electron microscope and X-ray diffractometer. UV-Vis absorption spectra show that the redshift was found in the acetylferrocene micro-nanomaterials compared to that in solution. The formation mechanism of the acetylferrocene micro-nanomaterials is also proposed. This work provides a new strategy for the material synthesis and preparation and may realize the reuse of organometallic materials.

• Macromolecular Research
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• v.13 no.4
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• pp.334-338
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• 2005

A three-layered poly(benzyl ether) dendrimer having a bis-ethynylbenzene core was synthesized and characterized with $^{1}H$ NMR and MALDI-TOF-MS spectroscopy. The dendrimer was reacted with platinum complexes to obtain platinum-acetylide based organometallic polymers. When the dendrimer was reacted with trans-[$PtCl_{2}(PEt_{3})_{2}$], a high molecular weight polymeric compound was formed, whereas, with cis-[$PtCl_{2}dppp$], a uniform molecular weight compound was formed, which was found to be a dimeric metallacycle by $^{1}H\;NMR,\;^{31}P\;NMR$ and ESI-TOF-MS spectroscopy. Both these complexes exhibited relatively a strong emission around 440 nm, indicating that they could be potential candidates for blue emitting polymer LEDs.

• Bulletin of the Korean Chemical Society
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• v.19 no.12
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• pp.1314-1319
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• 1998

Electronic structures and properties of the organometallic precursors [Me2AlNHR]2 (R =Me, iPr, and tBu) have been calculated by the semiempirical (ASED-MO, MNDO, AM1 and PM3) methods. Optimized structures obtained from the MNDO, AM1, and PM3 calculations indicate that the N-C bond lengths are considerably affected by the change of the R groups bonded to nitrogen, but the bond lengths of the Al-N and Al-C bonds are little affected. This result is useful in explaining the experimental results for the elimination of the R groups bonded to nitrogen, and could serve as a guide in designing an optimum precursor for the AlN thin film formation.

• Proceedings of the Korean Vacuum Society Conference
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• 2001.02a
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• pp.68-69
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• 2001

• Journal of the Korean Chemical Society
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• v.26 no.1
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• pp.58-60
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• 1982

• Proceedings of the Materials Research Society of Korea Conference
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• 1994.05a
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• pp.153-153
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• 1994

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.70.2-70
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• 1998

• Proceedings of the Materials Research Society of Korea Conference
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• 2002.11a
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• pp.109-109
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• 2002

• Bulletin of the Korean Chemical Society
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• v.15 no.11
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• pp.1013-1016
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• 1994