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Ken Albrecht

Associate Professor

  • 730 Citations
  • 12 h-Index
20062019
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Research Output 2006 2019

  • 730 Citations
  • 12 h-Index
  • 31 Article
  • 2 Paper
  • 2 Review article
  • 1 Comment/debate
2019

Dendrimer-templated synthesis and characterization of tin oxide quantum dots deposited on a silica glass substrate

Inomata, Y., Albrecht, K., Haruta, N. & Yamamoto, K., Oct 22 2019, In : Chemistry of Materials. 31, 20, p. 8373-8382 10 p.

Research output: Contribution to journal › Article

Dendrimers
Fused silica
Tin oxides
Semiconductor quantum dots
Substrates

Inkjet printing of thermally activated delayed fluorescence (TADF) dendrimer for OLEDs applications

C, A., Luszczynska, B., Szymanski, M. Z., Ulanski, J., Albrecht, K. & Yamamoto, K., Nov 2019, In : Organic Electronics. 74, p. 218-227 10 p.

Research output: Contribution to journal › Article

Dendrimers
dendrimers
Organic light emitting diodes (OLED)
printing
Printing

Nanosphere formation of π-conjugated dendrimers by simple precipitation method

Albrecht, K., Minagawa, K., Nakajima, S., Kushida, S., Yamamoto, Y., Kuzume, A. & Yamamoto, K., Jan 1 2019, In : Chemistry Letters. 48, 10, p. 1240-1243 4 p.

Research output: Contribution to journal › Article

Dendrimers
Nanospheres
Whispering gallery modes
Photoluminescence
Casting
2018
13 Citations (Scopus)

A dendrimer emitter doped in a dendrimer host: Efficient thermally activated delayed fluorescence OLEDs with fully-solution processed organic-layers

Albrecht, K., Matsuoka, K., Fujita, K. & Yamamoto, K., Jan 1 2018, In : Materials Chemistry Frontiers. 2, 6, p. 1097-1103 7 p.

Research output: Contribution to journal › Article

Dendrimers
Organic light emitting diodes (OLED)
Fluorescence
Ethanol
Doping (additives)
7 Citations (Scopus)

A fluorescent microporous crystalline dendrimer discriminates vapour molecules

Nakajima, S., Albrecht, K., Kushida, S., Nishibori, E., Kitao, T., Uemura, T., Yamamoto, K., Bunz, U. H. F. & Yamamoto, Y., Jan 1 2018, In : Chemical Communications. 54, 20, p. 2534-2537 4 p.

Research output: Contribution to journal › Article

Open Access
Dendrimers
Vapors
Crystalline materials
Molecules
Photoluminescence
6 Citations (Scopus)

Anisotropic convergence of dendritic macromolecules facilitated by a heteroleptic metal-organic polyhedron scaffold

Omoto, K., Hosono, N., Gochomori, M., Albrecht, K., Yamamoto, K. & Kitagawa, S., Jan 1 2018, In : Chemical Communications. 54, 41, p. 5209-5212 4 p.

Research output: Contribution to journal › Article

Dendrimers
Macromolecules
Scaffolds
Metals
X ray analysis
11 Citations (Scopus)

Highly Efficient Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes with Fully Solution-Processed Organic Multilayered Architecture: Impact of Terminal Substitution on Carbazole-Benzophenone Dendrimer and Interfacial Engineering

Matsuoka, K., Albrecht, K., Nakayama, A., Yamamoto, K. & Fujita, K., Oct 3 2018, In : ACS Applied Materials and Interfaces. 10, 39, p. 33343-33352 10 p.

Research output: Contribution to journal › Article

Dendrimers
Organic light emitting diodes (OLED)
Substitution reactions
Fluorescence
Electrons
2 Citations (Scopus)

Single-molecule rectifiers based on voltage-dependent deformation of molecular orbitals in carbazole oligomers

Yamada, R., Albrecht, K., Ohto, T., Minode, K., Yamamoto, K. & Tada, H., Nov 14 2018, In : Nanoscale. 10, 42, p. 19818-19824 7 p.

Research output: Contribution to journal › Article

Molecular orbitals
Oligomers
Electrodes
Molecules
Electric potential
8 Citations (Scopus)

Size-Dependent Oxidation State and CO Oxidation Activity of Tin Oxide Clusters

Inomata, Y., Albrecht, K. & Yamamoto, K., Jan 5 2018, In : ACS Catalysis. 8, 1, p. 451-456 6 p.

Research output: Contribution to journal › Article

Carbon Monoxide
Tin oxides
Thermodynamic properties
Oxidation
Dendrimers
2017
20 Citations (Scopus)

An Ionic Liquid That Dissolves Semiconducting Polymers: A Promising Electrolyte for Bright, Efficient, and Stable Light-Emitting Electrochemical Cells

Sakanoue, T., Yonekawa, F., Albrecht, K., Yamamoto, K. & Takenobu, T., Jul 25 2017, In : Chemistry of Materials. 29, 14, p. 6122-6129 8 p.

Research output: Contribution to journal › Article

Semiconducting polymers
Ionic Liquids
Electrochemical cells
Ionic liquids
Electrolytes
8 Citations (Scopus)

A Polyaromatic Molecular Clip That Enables the Binding of Planar, Tubular, and Dendritic Compounds

Jono, K., Suzuki, A., Akita, M., Albrecht, K., Yamamoto, K. & Yoshizawa, M., Jan 1 2017, In : Angewandte Chemie - International Edition. 56, 13, p. 3570-3574 5 p.

Research output: Contribution to journal › Article

Bearings (structural)
Perylene
Dendrimers
Amphiphiles
Anthracene

Designing intramolecular potential structure by utilizing dendrimers

Albrecht, K. & Kimihisa, Y., Nov 1 2017, In : kobunshi. 66, 11, p. 604-606 3 p.

Research output: Contribution to journal › Review article

Dendrimers
Macromolecules
Luminescence
Proteins
Molecules
1 Citation (Scopus)

Fabrication of sub-1 nm gap electrodes using metal-mask patterning and conductivity measurements of molecules in nanoscale spaces

Naitoh, Y., Albrecht, K., Wei, Q., Yamamoto, K., Shima, H. & Ishida, T., Jan 1 2017, In : RSC Advances. 7, 84, p. 53503-53508 6 p.

Research output: Contribution to journal › Article

Open Access
Masks
Metals
Fabrication
Electrodes
Molecules
38 Citations (Scopus)

Mulifunctional dendritic emitter: Aggregation-induced emission enhanced, thermally activated delayed fluorescent material for solution-processed multilayered organic light-emitting diodes

Matsuoka, K., Albrecht, K., Yamamoto, K. & Fujita, K., Jan 31 2017, In : Scientific reports. 7, 41780.

Research output: Contribution to journal › Article

Organic light emitting diodes (OLED)
Agglomeration
Fluorescence
Dendrimers
Quantum efficiency
41 Citations (Scopus)

Thermally activated delayed fluorescence OLEDs with fully solution processed organic layers exhibiting nearly 10% external quantum efficiency

Albrecht, K., Matsuoka, K., Yokoyama, D., Sakai, Y., Nakayama, A., Fujita, K. & Yamamoto, K., 2017, In : Chemical Communications. 53, 16, p. 2439-2442 4 p.

Research output: Contribution to journal › Article

Dendrimers
Triazines
Organic light emitting diodes (OLED)
Quantum efficiency
Fluorescence
2016
2 Citations (Scopus)

Mono-Substituted carbazole dendrimers as solution processable host materials for phosphorescent organic light-emitting diodes

Matsuoka, K., Albrecht, K., Yamamoto, K. & Fujita, K., Jan 1 2016, In : Journal of Photopolymer Science and Technology. 29, 2, p. 323-326 4 p.

Research output: Contribution to journal › Comment/debate

Dendrimers
Phosphorescence
Organic light emitting diodes (OLED)
carbazole
6 Citations (Scopus)

Polymerization of a divalent/tetravalent metal-storing atom-mimicking dendrimer

Albrecht, K., Hirabayashi, Y., Otake, M., Mendori, S., Tobari, Y., Azuma, Y., Majima, Y. & Yamamoto, K., Dec 2016, In : Science Advances. 2, 12, 1601414.

Research output: Contribution to journal › Article

Open Access
Dendrimers
Polymerization
Metals
Polymers
Electrons
2015
151 Citations (Scopus)

Carbazole dendrimers as solution-processable thermally activated delayed-fluorescence materials

Albrecht, K., Matsuoka, K., Fujita, K. & Yamamoto, K., May 4 2015, In : Angewandte Chemie - International Edition. 54, 19, p. 5677-5682 6 p.

Research output: Contribution to journal › Article

Dendrimers
Fluorescence
Organic light emitting diodes (OLED)
Triazines
Quantum efficiency

Effect of the Core Structure on the Sequential Coordination of Phenylazomethine Dendrimer

Albrecht, K., Sakane, N., Inomata, Y. & Yamamoto, K., Jan 1 2015, In : Journal of Inorganic and Organometallic Polymers and Materials. 25, 1, p. 133-139 7 p.

Research output: Contribution to journal › Article

Dendrimers
Complexation
Lewis Acids
Titration
Ligands
2014
8 Citations (Scopus)

Stepwise radial complexation from the outer layer to the inner layer of a dendritic ligand: A phenylazomethine dendrimer with an inverted coordination sequence

Albrecht, K., Sakane, N. & Yamamoto, K., Oct 18 2014, In : Chemical Communications. 50, 81, p. 12177-12180 4 p.

Research output: Contribution to journal › Article

Open Access
Dendrimers
Complexation
Substitution reactions
Ligands
Lewis Acids
2 Citations (Scopus)

Synthesis and properties of nitrogen-introduced phenylazomethine dendrimer

Albrecht, K., Higashimura, H. & Yamamoto, K., Aug 3 2014, In : Synthetic Communications. 44, 15, p. 2239-2247 9 p.

Research output: Contribution to journal › Article

Dendrimers
Molecular orbitals
Nitrogen
Palladium
Titanium
2013
17 Citations (Scopus)

A fourth-generation carbazole-phenylazomethine dendrimer as a size-selective host for fullerenes

Albrecht, K., Kasai, Y., Kuramoto, Y. & Yamamoto, K., Jan 30 2013, In : Chemical Communications. 49, 9, p. 865-867 3 p.

Research output: Contribution to journal › Article

Fullerenes
Dendrimers
Porphyrins
Encapsulation
carbazole
5 Citations (Scopus)

Dynamic control of dendrimer-fullerene association by axial coordination to the core

Albrecht, K., Kasai, Y., Kuramoto, Y. & Yamamoto, K., Aug 7 2013, In : Chemical Communications. 49, 61, p. 6861-6863 3 p.

Research output: Contribution to journal › Article

Fullerenes
Dendrimers
Pyridine
Derivatives
Porphyrins
95 Citations (Scopus)

Magic number Pt13 and misshapen Pt12 clusters: Which one is the better catalyst?

Imaoka, T., Kitazawa, H., Chun, W. J., Omura, S., Albrecht, K. & Yamamoto, K., Sep 4 2013, In : Journal of the American Chemical Society. 135, 35, p. 13089-13095 7 p.

Research output: Contribution to journal › Article

Catalyst activity
Metals
Dendrimers
Atoms
Catalysts
2012
1 Citation (Scopus)

Dendrimers and electronics

Albrecht, K. & Yamamoto, K., Jun 1 2012, In : KOBUNSHI RONBUNSHU. 69, 6, p. 251-259 9 p.

Research output: Contribution to journal › Review article

Open Access
Dendrimers
Electronic equipment
Laminating
Chromophores
Molecular structure
18 Citations (Scopus)

Patterning carbazole-phenylazomethine dendrimer films

Albrecht, K., Pernites, R., Felipe, M. J., Advincula, R. C. & Yamamoto, K., Feb 14 2012, In : Macromolecules. 45, 3, p. 1288-1295 8 p.

Research output: Contribution to journal › Article

Dendrimers
Lewis Acids
carbazole
phenylazomethine
Complexation
8 Citations (Scopus)

Synthesis of a dendrimer reactor for clusters with a magic number

Kitazawa, H., Albrecht, K. & Yamamoto, K., Aug 28 2012, In : Chemistry Letters. 41, 8, p. 828-830 3 p.

Research output: Contribution to journal › Article

Dendrimers
Metals
Complexation
tetraphenylmethane
phenylazomethine
2009
123 Citations (Scopus)

Dendritic structure having a potential gradient: New synthesis and properties of carbazole dendrimers

Albrecht, K. & Yamamoto, K., Feb 18 2009, In : Journal of the American Chemical Society. 131, 6, p. 2244-2251 8 p.

Research output: Contribution to journal › Article

Dendrimers
Derivatives
Electrons
Complexation
Crystal structure
28 Citations (Scopus)

The fluorescence and electroluminescence properties of the carbazole-phenylazomethine double layer-type dendrimer

Albrecht, K., Kasai, Y. & Yamamoto, K., Mar 1 2009, In : Journal of Inorganic and Organometallic Polymers and Materials. 19, 1, p. 118-123 6 p.

Research output: Contribution to journal › Article

Dendrimers
Electroluminescence
Fluorescence
Porphyrins
Organic light emitting diodes (OLED)
2008
55 Citations (Scopus)

Interface modification on TiO2 electrode using dendrimers in dye-sensitized solar cells

Nakashima, T., Satoh, N., Albrecht, K. & Yamamoto, K., Apr 8 2008, In : Chemistry of Materials. 20, 7, p. 2538-2543 6 p.

Research output: Contribution to journal › Article

Dendrimers
Electrodes
Complexation
Energy conversion
Conversion efficiency
4 Citations (Scopus)

Organic light-emitting diodes with hole-transporting material having metal collecting sites

Albrecht, K., Kimoto, A., Cho, J. S., Matsuura, Y. & Yamamoto, K., Aug 25 2008, In : Journal of Photopolymer Science and Technology. 21, 2, p. 181-182 2 p.

Research output: Contribution to journal › Article

Open Access
Dendrimers
Electroluminescence
Organic light emitting diodes (OLED)
Metals
phenylazomethine
41 Citations (Scopus)

The synthesis and properties of carbazole-phenylazomethine double layer-type dendrimers

Albrecht, K., Kasai, Y., Kimoto, A. & Yamamoto, K., Jun 10 2008, In : Macromolecules. 41, 11, p. 3793-3800 8 p.

Research output: Contribution to journal › Article

Dendrimers
Organic light emitting diodes (OLED)
Imines
Complexation
Dehydration
2006

Development of new OLED material using novel dendrimers

Albrecht, K. & Yamamoto, K., Oct 19 2006. 1 p.

Research output: Contribution to conference › Paper

Dendrimers
Organic light emitting diodes (OLED)
Porphyrins
Spin coating
Metal ions

Development of new OLED material using novel dendrimers

Albrecht, K. & Yamamoto, K., Dec 1 2006, p. 4692-4693. 2 p.

Research output: Contribution to conference › Paper

Dendrimers
Organic light emitting diodes (OLED)
Porphyrins
Spin coating
Metals
4 Citations (Scopus)

Dye-sensitized solar cell using π-conjugated dendrimer

Satoh, N., Nakashima, T., Albrecht, K. & Yamamoto, K., Aug 24 2006, In : Journal of Photopolymer Science and Technology. 19, 2, p. 141-142 2 p.

Research output: Contribution to journal › Article

Open Access
Dendrimers
Solar cells
Dye-sensitized solar cells
7 Citations (Scopus)

Organic light-emitting diodes with novel carbazole dendrimer as a photocrosslinking hole-transfer layer

Albrecht, K. & Yamamoto, K., Aug 24 2006, In : Journal of Photopolymer Science and Technology. 19, 2, p. 175-176 2 p.

Research output: Contribution to journal › Article

Open Access
Dendrimers
Electroluminescence
Organic light emitting diodes (OLED)