Preparation of multilayers using chemical adsorption and electron-beam irradiation

Ogawa, Kazufumi; Tamura, H.; Mino, Norihisa; Hatada, Motoyoshi

doi:10.1016/0040-6090(89)90169-7

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…The highly hydrophobic perylene dyes 1, which exhibit remarkable properties, [1] become easily soluble in water if sulfonic groups are attached to R. [2] A completely different and very unusual behavior has been observed with the hydrophilizing crown ether substituent: the dye 1a thus obtained seemed to be soluble in water because a colored, long-term storable liquid has been obtained starting from a coarse, crystalline dye material and pure water. However, the dye could be removed from this liquid by simple filtration through a D4 glass filter, which proved that the dye was still a solid in the aqueous phase.…”

Section: Methodsmentioning

confidence: 99%

Self-Dispersion: Spontaneous Formation of Colloidal Dyes in Water

Langhals¹,

Jona²,

Einsiedl

et al. 1998

Adv. Mater.

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Communications ExperimentalThe synthesis and purification of bis(dimethylglyoximato)platinum(II) (Pt(dmg) 2 ) has been reported elsewhere [12]. The metal complex was deposited on a cleaved KBr(001) substrate under 4´10 ±7 mbar of residual gas using an organic molecular beam deposition apparatus [29]. The thickness of the evaporated films was controlled by regulating the distance between the substrates and the Knudsen cell in which the metal complex was held. The evaporation temperature was ca. 200 C, and the substrate was kept at room temperature during deposition. The topographic images from atomic force microscopy (AFM) of the evaporated films were measured in air by a Seiko SP-3700 in contact mode. The transmission electron diffraction was taken by a Zeiss CEM-902 with an accelerating voltage of 80 kV. The observed film was stripped from the KBr substrate by immersion in water after being reinforced with an amorphous carbon coating. XRD measurements of the evaporated film on a KBr substrate were performed on a Mac Science MXP-18 diffractometer with Cu Ka radiation source (1.5405 ). Reflections were recorded over a 2y range from 6 to 60.

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Section: Methodsmentioning

confidence: 99%

Self-Dispersion: Spontaneous Formation of Colloidal Dyes in Water

Langhals¹,

Jona²,

Einsiedl

et al. 1998

Adv. Mater.

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“…For example, an attempt was made to construct hetero-layered structures using the widely known selfassembled monolayers of alkanethiol derivatives to develop the organization methodology sufficiently for it to be used for the production of actual devices. [1,2] In addition to progress made with the structural organization of these popular materials, novel processes or new types of materials have also been explored to realize the three-dimensional design of molecular assemblies. [3,4] The structure resulting from the self-organization is governed by the molecular structure and the interaction between the molecular materials and the substrate; therefore, the new materials will show distinct three-dimensional assembled structures.…”

mentioning

confidence: 99%

“…Two sharp diffractions are visible at 27.46 and 56.66 in addition to the strong (002) and (004) peaks of the KBr substrate. It has been reported that single crystals of Pt(dmg) 2 have an orthorhombic space group with the metal chain parallel to the crystal c-axis. [21] Using the reported lattice constants of the bulk crystal of Pt(dmg) 2 , the two diffractions can be ascribed to the (002) and (004) diffractions of the bulk single crystal, in spite of the difference in the crystal morphology between the plate-like islands and the single crystal.…”

mentioning

confidence: 99%

Evaporated Crystalline Film of Platinum Dimethylglyoxime with Short One-Dimensional Metal Chains

Yamamoto¹,

Kamata

Yoshida

et al. 1998

Adv. Mater.

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CommunicationsTris(5-[5¢-butylthio-(2,2¢-dithienyl)])methyl Cation (3e): 1 H NMR: d = 0.90 ppm (t, 9H, J = 7 Hz, CH 2 ±CH 2 ±CH 2 ±CH 3 ), 1.42 ppm (m, 6H, CH 2 ± CH 2 ±CH 2 ±CH 3 ), 1.64 ppm (m, 6H, CH 2 ±CH 2 ±CH 2 ±CH 3 ), 2.89 ppm (t, 6H, J = 7 Hz, ±CH 2 ±CH 2 ±CH 2 ±CH 3 ), 6.99 ppm (d, 3H, J = 3.7 Hz, H 4 ), 7.15 ppm (d, 3H, J = 3.6 Hz, H 4¢ ), 7.21 ppm (d, 3H, J = 3.6 Hz, H 3 ), 7.24 ppm (d, 3H, J = 3.6 Hz, H 3¢ ). 13 C NMR: d = 13.5, 20.9, 30.9, 37.4, 123.7, 124.5, 126.8, 133.5, 134.1, 135.8, 139.0, 150.6 ppm. HRMS (m/z): M +. without counterion 770.Tris[5-(2,2¢:5¢,2²-terthienyl)]methyl Cation (3f): 1 H NMR: d = 7.25 ppm (d, 3H, J = 3.9 Hz, H 4 ), 7.29 ppm (dd, 6H, J = 3.7 Hz and J = 5 Hz, H 4² ), 7.42 ppm (d, 3H, J = 3.9 Hz, H 3 ), 7.53 ppm (s, 6H, H 3¢ and H 4¢ ), 7.58 ppm (dd, 3H, J = 0.7 Hz and J = 3.5 Hz, H 3² ), 7.79 ppm (dd, 3H, J = 0.7 Hz and J = 5 Hz, H 5² ). 13 C NMR: d = 123. 8, 124.4, 125.1, 125.9, 127.0, 128.7, 135.2, 135.6, 136.0, 150.6 ppm. HRMS (m/z): M +. without counterion 752.

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Vibrational Spectroscopy of Surface Adsorbates by Sum Frequency Generation (SFG)

Hirose

Watanabe

Yamamoto

et al. 1994

J Chinese Chemical Soc

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The vibrational spectroscopy by way of vibrational sum-frequency generation (VSFG) has been made of formic acid adsorbed on MgO(OOl) surface and of n-aIkyltrichlorosilanes chemisorbed on quartz plates. It was revealed that the species on the MgO surface was formate ion (HCOO+) with CH bonds standing vertical to the surface and that the different adsorption sites showed up on repeated cycles of adsorption-desorption processes. The results of chemisorbcd films indicated that the got and/or g-t-g' conformational sequences of n-alkyl chains occurred more frequently by the length of alkyl chain and that the surface hydroxyls, which are the sites of chemisorption, are ripped off by pre-exposure of substrate to oxygen plasma. 2?5

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Preparation of multilayers using chemical adsorption and electron-beam irradiation

Cited by 4 publications

References 11 publications

Self-Dispersion: Spontaneous Formation of Colloidal Dyes in Water

Self-Dispersion: Spontaneous Formation of Colloidal Dyes in Water

Evaporated Crystalline Film of Platinum Dimethylglyoxime with Short One-Dimensional Metal Chains

Vibrational Spectroscopy of Surface Adsorbates by Sum Frequency Generation (SFG)

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