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Research Output 1990 2019

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Article
2008

The fluorescence behavior from SAM of dendron with rhodamine B as a center

Naitoh, Y., Otomo, A., Miki, H., Aoki, I. & Yokoyama, S., Mar 3 2008, In : Thin Solid Films. 516, 9, p. 2371-2375 5 p.

Research output: Contribution to journalArticle

rhodamine B
Self assembled monolayers
rhodamine
Fluorescence
fluorescence
8 Citations (Scopus)

Theoretical study of molecular rectification in porphyrin dimer

Okuno, Y. & Yokoyama, S., Mar 3 2008, In : Thin Solid Films. 516, 9, p. 2630-2634 5 p.

Research output: Contribution to journalArticle

Porphyrins
rectification
porphyrins
Dimers
dimers
2007

Analysis of a molecular beam produced by the spray-jet technique with femtosecond laser mass spectroscopy

Yamada, T., Shinohara, H., Mashiko, S. & Yokoyama, S., Aug 20 2007, In : Molecular Crystals and Liquid Crystals. 472, 1, p. 171-179 9 p.

Research output: Contribution to journalArticle

Molecular beams
Ultrashort pulses
laser spectroscopy
molecular beams
sprayers
7 Citations (Scopus)

Development of an electric field sensor based on second harmonic generation with electro-optic materials

Vasa, N. J., Kawata, Y., Tanaka, R. & Yokoyama, S., Apr 30 2007, In : Journal of Materials Processing Technology. 185, 1-3, p. 173-177 5 p.

Research output: Contribution to journalArticle

Electrooptical effects
Harmonic generation
Electric field measurement
Electric fields
Sensors
30 Citations (Scopus)

Interstitial accommodation of C60 in a surface-supported supramolecular network

Nishiyama, F., Yokoyama, T., Kamikado, T., Yokoyama, S., Mashiko, S., Sakaguchi, K. & Kikuchi, K., Jan 8 2007, In : Advanced Materials. 19, 1, p. 117-120 4 p.

Research output: Contribution to journalArticle

Molecules
Nanopores
Porphyrins
Derivatives
Adsorption

Single-mode polymer DBR lasers with two-dimensional microcavity structures

Yokoyama, S., Jan 2007, In : IEICE Transactions on Electronics. E90-C, 1, p. 135-138 4 p.

Research output: Contribution to journalArticle

DBR lasers
Dendrimers
Dye lasers
Microcavities
Laser modes
25 Citations (Scopus)

Superfocusing modes of surface plasmon polaritons in conical geometry based on the quasi-separation of variables approach

Kurihara, K., Otomo, A., Syouji, A., Takahara, J., Suzuki, K. & Yokoyama, S., Oct 12 2007, In : Journal of Physics A: Mathematical and Theoretical. 40, 41, p. 12479-12503 25 p.

Research output: Contribution to journalArticle

Surface Plasmon Polariton
Separation of Variables
Wave equations
polaritons
wave equations
2006
66 Citations (Scopus)

Lasing from two-dimensional photonic crystals using anodic porous alumina

Masuda, H., Yamada, M., Matsumoto, F., Yokoyama, S., Mashiko, S., Nakao, M. & Nishio, K., Jan 19 2006, In : Advanced Materials. 18, 2, p. 213-216 4 p.

Research output: Contribution to journalArticle

Aluminum Oxide
Photonic crystals
Alumina
Wavelength
Periodic structures
23 Citations (Scopus)

Layer-by-layer growth of porphyrin supramolecular thin films

Nishiyama, F., Yokoyama, T., Kamikado, T., Yokoyama, S. & Mashiko, S., Jun 19 2006, In : Applied Physics Letters. 88, 25, 253113.

Research output: Contribution to journalArticle

porphyrins
wire
thin films
scanning tunneling microscopy
hydrogen
2005
13 Citations (Scopus)

Amplified spontaneous emission and laser emission from a high optical-gain medium of dye-doped dendrimer

Yokoyama, S., Nakahama, T. & Mashiko, S., Jan 1 2005, In : Journal of Luminescence. 111, 4 SPEC. ISS., p. 285-290 6 p.

Research output: Contribution to journalArticle

Dendrimers
Optical gain
Spontaneous emission
dendrimers
spontaneous emission
8 Citations (Scopus)

Photonic crystal templates for organic solid-state lasers

Yokoyama, S., Nakahama, T., Mashiko, S., Nakao, M., Yamada, M., Nishio, K. & Masuda, H., Nov 7 2005, In : Applied Physics Letters. 87, 19, p. 1-3 3 p., 191101.

Research output: Contribution to journalArticle

organic lasers
organic solids
solid state lasers
templates
photonics
2004
16 Citations (Scopus)

Adsorption-induced conformational changes of porphyrin derivatives and formation of twin superstructures on a copper surface

Sekiguchi, T., Wakayama, Y., Yokoyama, S., Kamikado, T. & Mashiko, S., Oct 1 2004, In : Thin Solid Films. 464-465, p. 393-397 5 p.

Research output: Contribution to journalArticle

Porphyrins
Scanning tunneling microscopy
porphyrins
scanning tunneling microscopy
Copper
81 Citations (Scopus)

Conformation selective assembly of carboxyphenyl substituted porphyrins on Au (111)

Yokoyama, T., Kamikado, T., Yokoyama, S. & Mashiko, S., Dec 15 2004, In : Journal of Chemical Physics. 121, 23, p. 11993-11997 5 p., 5.

Research output: Contribution to journalArticle

Porphyrins
porphyrins
Conformations
Hydrogen
assembly

Fabrication and characterization of nanometer-size structures consisting of organic molecules

Suzuki, H., Terui, T., Tanaka, S., Miki, H., Kamikado, T., Yokoyama, T., Okuno, Y., Yokoyama, S. & Mashiko, S., Sep 1 2004, In : Journal of the National Institute of Information and Communications Technology. 51, 3-4, p. 119-127 9 p.

Research output: Contribution to journalArticle

Fabrication
Molecules
Microscopes
Scanning
Binding sites
17 Citations (Scopus)

Nanoscale organic electroluminescence from tunnel junctions

Guo, X. L., Dong, Z. C., Trifonov, A. S., Miki, K., Wakayama, Y., Fujita, D., Kimura, K., Yokoyama, S. & Mashiko, S., Dec 1 2004, In : Physical Review B - Condensed Matter and Materials Physics. 70, 23, p. 1-4 4 p.

Research output: Contribution to journalArticle

Tunnel junctions
Electroluminescence
tunnel junctions
electroluminescence
Porphyrins
130 Citations (Scopus)

Phototunable photonic bandgap in a chiral liquid crystal laser device

Furumi, S., Yokoyama, S., Otomo, A. & Mashiko, S., Apr 5 2004, In : Applied Physics Letters. 84, 14, p. 2491-2493 3 p.

Research output: Contribution to journalArticle

liquid crystals
photonics
lasers
dyes
oscillations
22 Citations (Scopus)

Tunneling-electron-induced molecular luminescence from a nanoscale layer of organic molecules on metal substrates

Guo, X. L., Dong, Z. C., Trifonov, A. S., Yokoyama, S., Mashiko, S. & Okamoto, T., Feb 9 2004, In : Applied Physics Letters. 84, 6, p. 969-971 3 p.

Research output: Contribution to journalArticle

electron tunneling
luminescence
metals
molecules
decoupling
158 Citations (Scopus)

Vibrationally Resolved Fluorescence from Organic Molecules near Metal Surfaces in a Scanning Tunneling Microscope

Dong, Z. C., Guo, X. L., Trifonov, A. S., Dorozhkin, P. S., Miki, K., Kimura, K., Yokoyama, S. & Mashiko, S., Jan 1 2004, In : Physical Review Letters. 92, 8

Research output: Contribution to journalArticle

metal surfaces
microscopes
fluorescence
scanning
molecules
2003

Dendrimer for Molecular Photonics Application

Yokoyama, S., Jan 1 2003, In : kobunshi. 52, 10, p. 758-762 5 p.

Research output: Contribution to journalArticle

Dendrimers
Photonics
3 Citations (Scopus)

Determining the conformation of a phenylene-linked porphyrin dimer by NMR spectroscopy and quantum chemical calculations

Okuno, Y., Kamikado, T., Yokoyama, S. & Mashiko, S., Aug 1 2003, In : Journal of Molecular Structure: THEOCHEM. 631, 1-3, p. 13-20 8 p.

Research output: Contribution to journalArticle

Porphyrins
porphyrins
Dimers
Nuclear magnetic resonance spectroscopy
Conformations
157 Citations (Scopus)

Electrical control of the structure and lasing in chiral photonic band-gap liquid crystals

Furumi, S., Yokoyama, S., Otomo, A. & Mashiko, S., Jan 6 2003, In : Applied Physics Letters. 82, 1, p. 16-18 3 p.

Research output: Contribution to journalArticle

lasing
liquid crystals
photonics
photoexcitation
doped crystals
2 Citations (Scopus)

Electrical response of the supramolecular helical structure and laser action in chiral photonic bandgap liquid crystals

Furumi, S., Yokoyama, S., Otomo, A. & Mashiko, S., Oct 2003, In : KOBUNSHI RONBUNSHU. 60, 10, p. 555-560 6 p.

Research output: Contribution to journalArticle

Cholesteric liquid crystals
Liquid Crystals
Liquid crystals
Photonics
Energy gap
17 Citations (Scopus)

Identifying subphthalocyanine molecule isomers by using a scanning tunneling microscope

Suzuki, H., Miki, H., Yokoyama, S. & Mashiko, S., Apr 17 2003, In : Journal of Physical Chemistry B. 107, 15, p. 3659-3662 4 p.

Research output: Contribution to journalArticle

Isomers
Microscopes
isomers
microscopes
Scanning
13 Citations (Scopus)

Light Emission from Organic Molecules on Metal Substrates Induced by Tunneling Currents

Guo, X. L., Dong, Z. C., Trifonov, A. S., Yokoyama, S., Mashiko, S. & Okamoto, T., Nov 2003, In : Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes. 42, 11, p. 6937-6940 4 p.

Research output: Contribution to journalArticle

Light emission
light emission
Molecules
Monolayers
Substrates
26 Citations (Scopus)

Two-photon-induced polymerization in a laser gain medium for optical microstructure

Yokoyama, S., Nakahama, T., Miki, H. & Mashiko, S., May 12 2003, In : Applied Physics Letters. 82, 19, p. 3221-3223 3 p.

Research output: Contribution to journalArticle

dye lasers
polymerization
microstructure
dendrimers
photons
2002
59 Citations (Scopus)

Laser emission from high-gain media of dye-doped dendrimer

Yokoyama, S., Otomo, A. & Mashiko, S., Jan 7 2002, In : Applied Physics Letters. 80, 1, p. 7-9 3 p.

Research output: Contribution to journalArticle

dendrimers
high gain
dye lasers
dyes
lasing
19 Citations (Scopus)

Light emission from porphyrin molecules induced by a scanning tunneling microscope

Dong, Z. C., Kar, A., Zou, Z. Q., Ohgi, T., Dorozhkin, P., Fujita, D., Yokoyama, S., Terui, T., Yamada, T., Kamikado, T., Zhou, M., Mashiko, S. & Okamoto, T., Jul 1 2002, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 41, 7 B, p. 4898-4902 5 p.

Research output: Contribution to journalArticle

Light emission
Porphyrins
porphyrins
light emission
Microscopes
38 Citations (Scopus)

Molecularly Resolved Dynamics for Two-Dimensional Nucleation of Supramolecular Assembly

Yanagi, H., Mukai, H., Ikuta, K., Shibutani, T., Kamikado, T., Yokoyama, S. & Mashiko, S., Jun 1 2002, In : Nano Letters. 2, 6, p. 601-604 4 p.

Research output: Contribution to journalArticle

Nucleation
assembly
nucleation
Molecules
nuclei
10 Citations (Scopus)

Novel rigid-rod 2,6-diphenylbenzo[1,2-d:4,5-d′]bisthiazole (DPBBT) derivatives for second-order nonlinear optical chromophores

Lee, S. H., Otomo, A., Nakahama, T., Yamada, T., Kamikado, T., Yokoyama, S. & Mashiko, S., Jan 1 2002, In : Journal of Materials Chemistry. 12, 8, p. 2187-2188 2 p.

Research output: Contribution to journalArticle

Chromophores
Transparency
Derivatives
20 Citations (Scopus)

Photochemical stability of encapsulated laser dyes in dendritic nanoboxes against singlet oxygen

Otomo, A., Otomo, S., Yokoyama, S. & Mashiko, S., Jun 1 2002, In : Optics Letters. 27, 11, p. 891-893 3 p.

Research output: Contribution to journalArticle

dye lasers
oxygen
dyes
bleaching
attachment
25 Citations (Scopus)

STM-induced photon emission from self-assembled porphyrin molecules on a Cu(100) surface

Deng, W., Fujita, D., Ohgi, T., Yokoyama, S., Kamikado, K. & Mashiko, S., Sep 8 2002, In : Journal of Chemical Physics. 117, 10, p. 4995-5000 6 p.

Research output: Contribution to journalArticle

Porphyrins
Scanning tunneling microscopy
porphyrins
scanning tunneling microscopy
Photons
35 Citations (Scopus)
Dimers
Density functional theory
Zinc
zinc
Monomers
4 Citations (Scopus)

Superfluorescence action from rhodamine-cored dendrimer

Yokoyama, S., Nakahama, T., Otomo, A. & Mashiko, S., Feb 18 2002, In : Colloids and Surfaces A: Physicochemical and Engineering Aspects. 198-200, p. 433-438 6 p.

Research output: Contribution to journalArticle

Superradiance
Dendrimers
Rhodamines
dendrimers
rhodamine
25 Citations (Scopus)

Theoretical study of aryl-ring rotation in arylporphyrins

Okuno, Y., Kamikado, T., Yokoyama, S. & Mashiko, S., Oct 11 2002, In : Journal of Molecular Structure: THEOCHEM. 594, 1-2, p. 55-60 6 p.

Research output: Contribution to journalArticle

Energy barriers
Porphyrins
Potential energy
Theoretical Models
rings
46 Citations (Scopus)

Theoretical study of benzonitrile clusters in the gas phase and their adsorption onto a Au(111) surface

Okuno, Y., Yokoyama, T., Yokoyama, S., Kamikado, T. & Mashiko, S., Jun 19 2002, In : Journal of the American Chemical Society. 124, 24, p. 7218-7225 8 p.

Research output: Contribution to journalArticle

Adsorption
Porphyrins
Theoretical Models
Gases
Adsorbates
11 Citations (Scopus)

Theoretical study of solvent effects of first-order hyperpolarizabilities of nitro-azobenzene dendrimers

Yamaguchi, Y., Yokomichi, Y., Yokoyama, S. & Mashiko, S., Feb 14 2002, In : Journal of Molecular Structure: THEOCHEM. 578, 1-3, p. 35-45 11 p.

Research output: Contribution to journalArticle

Dendrimers
dendrimers
Theoretical Models
Molecular Dynamics Simulation
acetonitrile
1 Citation (Scopus)

Time-resolved spectral measurement of dendrimer molecular films with rhodamine B core

Zhou, M., Otomo, A., Yokoyama, S. & Mashiko, S., Jan 1 2002, In : Materials Research Society Symposium - Proceedings. 708, p. 63-69 7 p.

Research output: Contribution to journalArticle

rhodamine B
Dendrimers
pump
Molecules
Pumps

Two-photon polymerization for three-dimensional sub-microfabrication by dendrimers

Yokoyama, S. & Mashiko, S., Jan 1 2002, In : KOBUNSHI RONBUNSHU. 59, 10, p. 642-645 4 p.

Research output: Contribution to journalArticle

Dendrimers
Microfabrication
polymerization
Photons
Polymerization
2001
10 Citations (Scopus)

Estimation of organic molecular film structures using surface-plasmon resonance spectroscopy

Zhou, M., Otomo, A., Yokoyama, S. & Mashiko, S., Aug 1 2001, In : Thin Solid Films. 393, 1-2, p. 114-118 5 p.

Research output: Contribution to journalArticle

Surface plasmon resonance
surface plasmon resonance
Spectroscopy
Substrates
spectroscopy
37 Citations (Scopus)
Dendrimers
Azobenzene
dendrimers
Dimers
dimers
10 Citations (Scopus)

Land use classification with textural analysis and the aggregation technique using multi-temporal JERS-1 L-band SAR images

Kurosu, T., Yokoyama, S., Fujita, M. & Chiba, K., Jan 1 2001, In : International Journal of Remote Sensing. 22, 4, p. 595-613 19 p.

Research output: Contribution to journalArticle

synthetic aperture radar
texture
analysis
JERS
land use classification

Laser applications of dendrimers

Mashiko, S., Yokoyama, S., Nakahama, T. & Otomo, A., Dec 1 2001, In : Shinku/Journal of the Vacuum Society of Japan. 44, 11, p. 963-968 6 p.

Research output: Contribution to journalArticle

Dendrimers
Laser applications
laser applications
dendrimers
Superradiance
126 Citations (Scopus)

Nonplanar adsorption and orientational ordering of porphyrin molecules on Au(111)

Yokoyama, T., Yokoyama, S., Kamikado, T. & Mashiko, S., Aug 22 2001, In : Journal of Chemical Physics. 115, 8, p. 3814-3818 5 p.

Research output: Contribution to journalArticle

Porphyrins
porphyrins
Adsorption
Molecules
adsorption
9 Citations (Scopus)

Photoisomerization of azobenzene dendrimer monolayer investigated by Maxwell displacement current technique

Shimura, D., Manaka, T., Nakamoto, M., Zhao, W., Majima, Y., Iwamoto, M., Yokoyama, S., Kubota, T. & Mashiko, S., Dec 1 2001, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 40, 12, p. 7085-7090 6 p.

Research output: Contribution to journalArticle

Photoisomerization
Azobenzene
Dendrimers
dendrimers
Isomerization
24 Citations (Scopus)

Photon emission induced by tunneling electrons from a Cu(1 0 0) surface covered with porphyrin molecules

Fujita, D., Ohgi, T., Deng, W. L., Ishige, K., Okamoto, T., Yokoyama, S., Kamikado, T. & Mashiko, S., Nov 1 2001, In : Surface Science. 493, 1-3, p. 702-707 6 p.

Research output: Contribution to journalArticle

Electron tunneling
Porphyrins
electron tunneling
porphyrins
Photons
1 Citation (Scopus)

Remarkable optical properties of dendrimers for laser applications

Otomo, A., Otomo, S., Yokoyama, S., Nakahama, T. & Mashiko, S., Dec 1 2001, In : Proceedings of SPIE - The International Society for Optical Engineering. 4461, p. 180-187 8 p.

Research output: Contribution to journalArticle

Dendrimers
Laser applications
laser applications
dendrimers
Optical Properties
723 Citations (Scopus)

Selective assembly on a surface of supramolecular aggregates with controlled size and shape

Yokoyama, T., Yokoyama, S., Kamikado, T., Okuno, Y. & Mashiko, S., Oct 11 2001, In : Nature. 413, 6856, p. 619-621 3 p.

Research output: Contribution to journalArticle

Porphyrins
Scanning Tunnelling Microscopy
Gold
Equipment and Supplies
Temperature
16 Citations (Scopus)

Theoretical predictions of first-order hyperpolarizabilities of azobenzene dendrimers

Yamaguchi, Y., Yokomichi, Y., Yokoyama, S. & Mashiko, S., Jul 9 2001, In : Journal of Molecular Structure: THEOCHEM. 545, 1-3, p. 187-196 10 p.

Research output: Contribution to journalArticle

Dendrimers
dendrimers
Langmuir Blodgett films
Molecular Dynamics Simulation
Langmuir-Blodgett films
13 Citations (Scopus)

Time-dependent density functional calculations of the Q-like bands of phenylene-linked free-base and zinc porphyrin dimers

Yamaguchi, Y., Yokomichi, Y., Yokoyama, S. & Mashiko, S., Aug 15 2001, In : International Journal of Quantum Chemistry. 84, 3, p. 338-347 10 p.

Research output: Contribution to journalArticle

porphyrins
Dimers
Density functional theory
zinc
dimers
2000
15 Citations (Scopus)
Hamiltonians
examination
Vibrational spectra
Angular momentum
harmonics