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Research Output 1990 2019

1996
7 Citations (Scopus)

Surface observation of Langmuir-Blodgett films of polyamic acid alkylamine salts and polyimide by atomic force microscopy and friction force microscopy

Yokoyama, S., Kakimoto, M. & Imai, Y., Aug 15 1996, In : Synthetic Metals. 81, 2-3, p. 265-270 6 p.

Research output: Contribution to journalArticle

Langmuir Blodgett films
Langmuir-Blodgett films
polyimides
Polyimides
Atomic force microscopy
8 Citations (Scopus)

Surface structure and orientation of polyamic acid alkylamine salt Langmuir-Blodgett films having an azobenzene pendant unit

Yokoyama, S., Kakimoto, M. A., Imai, Y., Yamada, T., Kajikawa, K., Takezoe, H. & Fukuda, A., Jan 1 1996, In : Thin Solid Films. 273, 1-2, p. 254-257 4 p.

Research output: Contribution to journalArticle

Azobenzene
Langmuir Blodgett films
Langmuir-Blodgett films
Surface structure
Salts
1995
43 Citations (Scopus)

Azimuthal Photoregulation of a Liquid Crystal with an Azobenzene-Modified Polyimide Langmuir-Blodgett Monolayer

Akiyama, H., Kudo, K., Ichimura, K., Yokoyama, S., Kakimoto, M. A. & Imai, Y., Mar 1 1995, In : Langmuir. 11, 3, p. 1033-1037 5 p.

Research output: Contribution to journalArticle

Liquid Crystals
Azobenzene
polyimides
Polyimides
Liquid crystals
3 Citations (Scopus)

The structure of PMDA-PDA polyimide monolayers adsorbed on gold surfaces

Keil, M., Paggel, J. J., Schedel-Niedrig, T., Yokoyama, S., Sotobayashi, H. & Bradshaw, A. M., Nov 1995, In : Applied Surface Science. 90, 3, p. 377-381 5 p.

Research output: Contribution to journalArticle

Personal digital assistants
Polyimides
Gold
Monolayers
Scanning tunneling microscopy
1994
3 Citations (Scopus)

Displacement current generation across single monolayers of polyamic acids having pendant groups at the air-water interface

Naruse, H., Iwamoto, M., Yokoyama, S., Kakimoto, M. A. & Imai, Y., Apr 15 1994, In : Thin Solid Films. 242, 1-2, p. 220-222 3 p.

Research output: Contribution to journalArticle

Monolayers
surface water
acids
Acids
Water
22 Citations (Scopus)

Further investigation of the preparation process of poly(p-phenylenevinylene) Langmuir-Blodgett films

Wu, A., Yokoyama, S., Watanabe, S., Kakimoto, M. A., Imai, Y., Araki, T. & Iriyama, K., May 15 1994, In : Thin Solid Films. 244, 1-2, p. 750-753 4 p.

Research output: Contribution to journalArticle

Langmuir Blodgett films
Langmuir-Blodgett films
Heat treatment
preparation
Sulfides
14 Citations (Scopus)

Imidization Process in a Dye-Labeled Poly(amic acid) Langmuir-Blodgett Film Studied by Optical Second-Harmonic Generation

Yamada, T., Yokoyama, S., Kajikawa, K., Ishikawa, K., Takezoe, H., Fukuda, A., Kakimoto, M. A. & Imai, Y., Apr 1 1994, In : Langmuir. 10, 4, p. 1160-1163 4 p.

Research output: Contribution to journalArticle

Langmuir Blodgett films
Langmuir-Blodgett films
Harmonic generation
harmonic generations
Coloring Agents
9 Citations (Scopus)

Novel Orientation of Azobenzene Pendant Group in Hybrid Monolayers Composed of Polyimide Langmuir‒Blodgett Film and Alkyl Polysiloxane Self-Assembled Monolayer

Yokoyama, S., Yamada, T., Kajikawa, K., Kakimoto, M. A., Imai, Y., Takezoe, H. & Fukuda, A., Dec 1 1994, In : Langmuir. 10, 12, p. 4599-4605 7 p.

Research output: Contribution to journalArticle

Siloxanes
polysiloxanes
Azobenzene
Self assembled monolayers
polyimides
12 Citations (Scopus)

Observation of phase‐separated polymeric LB films using scanning probe microscopy

Yuba, T., Yokoyama, S., Kakimoto, MA. A. & Imai, Y., Nov 1994, In : Advanced Materials. 6, 11, p. 888-889 2 p.

Research output: Contribution to journalArticle

Scanning probe microscopy
Polymer films
Polyimides
Phase separation
Microscopic examination
19 Citations (Scopus)

Photochemically Inducible and Erasable Dichroism by Molecular Reorientation of an Azobenzene Pendant Unit in a Polyimide Langmuir‒Blodgett Film

Yokoyama, S., Kakimoto, M. A. & Imai, Y., Dec 1 1994, In : Langmuir. 10, 12, p. 4594-4598 5 p.

Research output: Contribution to journalArticle

Azobenzene
Dichroism
polyimides
Polyimides
dichroism
5 Citations (Scopus)

Photochemical memory system in polyimide Langmuir-Blodgett film with azobenzene pendant group

Yokoyama, S., Kakimoto, M. A. & Imai, Y., Apr 15 1994, In : Thin Solid Films. 242, 1-2, p. 183-186 4 p.

Research output: Contribution to journalArticle

Photoisomerization
Azobenzene
Langmuir Blodgett films
Langmuir-Blodgett films
polyimides
8 Citations (Scopus)

Various orientations of pendant dye attached to polyamic Langmuir and Langmuir-Blodgett films studied by an optical second-harmonic generation interferometry technique

Tamada, T., Yokoyama, S., Kajikawa, K., Ishikawa, K., Takezoe, H., Fukuda, A., Kakimoto, M. A. & Imai, Y., Jan 1 1994, In : Thin Solid Films. 244, 1 -2 pt 3, p. 754-757 4 p.

Research output: Contribution to journalConference article

Langmuir Blodgett films
Langmuir-Blodgett films
Harmonic generation
Interferometry
harmonic generations
1993
13 Citations (Scopus)
group dynamics
Optical anisotropy
Photoisomerization
Azobenzene
Langmuir Blodgett films
25 Citations (Scopus)

Preparation and In-Plane Anisotropic Photobleaching Properties of Polyimide Langmuir-Blodgett Films Having a Photoresponsive p-Nitroazobenzene Pendant Group

Yokoyama, S., Kakimoto, M. A. & Imai, Y., Jan 1 1993, In : Langmuir. 9, 4, p. 1086-1091 6 p.

Research output: Contribution to journalArticle

Photobleaching
Langmuir Blodgett films
Langmuir-Blodgett films
polyimides
Polyimides
1990
4 Citations (Scopus)

Synthesis of ultra‐thin films of aromatic polymers at air/water interface

Ueda, T., Yokoyama, S., Watanabe, M., Sanui, K. & Ogat, N., Nov 1990, In : Journal of Polymer Science Part A: Polymer Chemistry. 28, 12, p. 3221-3230 10 p.

Research output: Contribution to journalArticle

Aromatic polymers
Ultrathin films
Polymers
Water
Air