Does the Sum-Frequency Generation Signal of Aromatic C–H Vibrations Reflect Molecular Orientation?

Fumiki Matsumura, Chun-Chieh Yu, Xiaoqing Yu, Kuo-Yang Chiang, Takakazu Seki, Mischa Bonn, Yuki Nagata

The Journal of Physical Chemistry B   127 ( 23 )   5288 - 5294   2023.6

Ions Speciation at the Water–Air Interface

Takakazu Seki, Chun-Chieh Yu, Kuo-Yang Chiang, Alessandro Greco, Xiaoqing Yu, Fumiki Matsumura, Mischa Bonn, Yuki Nagata

Journal of the American Chemical Society   145 ( 19 )   10622 - 10630   2023.5

Self-assembled GA-Repeated Peptides as a Biomolecular Scaffold for Biosensing with MoS2 Electrochemical Transistors

Hironaga Noguchi, Yoshiki Nakamura, Sayaka Tezuka, Takakazu Seki, Kazuki Yatsu, Takuma Narimatsu, Yasuaki Nakata, Yuhei Hayamizu

ACS Applied Materials & Interfaces   15 ( 11 )   14058 - 14066   2023.3

Chemistry governs water organization at a graphene electrode

Yongkang Wang, Takakazu Seki, Xiaoqing Yu, Chun-Chieh Yu, Kuo-Yang Chiang, Katrin F. Domke, Johannes Hunger, Yunfei Chen, Yuki Nagata, Mischa Bonn

Nature   2023.3

Direct Probe of Electrochemical Pseudocapacitive pH Jump at a Graphene Electrode**

Yongkang Wang, Takakazu Seki, Xuan Liu, Xiaoqing Yu, Chun‐Chieh Yu, Katrin F. Domke, Johannes Hunger, Marc T. M. Koper, Yunfei Chen, Yuki Nagata, Mischa Bonn

Angewandte Chemie International Edition   62 ( 10 )   2023.3

Nature of Cations Critically Affects Water at the Negatively Charged Silica Interface

Johannes Hunger, Jan Schaefer, Patrick Ober, Takakazu Seki, Yongkang Wang, Leon Prädel, Yuki Nagata, Mischa Bonn, Douwe Jan Bonthuis, Ellen H. G. Backus

Journal of the American Chemical Society   2022.11

The dielectric function profile across the water interface through surface-specific vibrational spectroscopy and simulations

Kuo-Yang Chiang, Takakazu Seki, Chun-Chieh Yu, Tatsuhiko Ohto, Johannes Hunger, Mischa Bonn, Yuki Nagata

Proceedings of the National Academy of Sciences   2022.9

Tuning Ice Nucleation by Mussel-Adhesive Inspired Polyelectrolytes: The Role of Hydrogen Bonding

Jing Chen, Yongkang Wang, Benjamin Leibauer, Takakazu Seki, Konrad Meister, Yuki Nagata, Mischa Bonn

CCS Chemistry   4 ( 9 )   2890 - 2990   2022.9

Polarization-Dependent Heterodyne-Detected Sum-Frequency Generation Spectroscopy as a Tool to Explore Surface Molecular Orientation and Ångström-Scale Depth Profiling

Chun-Chieh Yu, Takakazu Seki, Kuo-Yang Chiang, Fujie Tang, Shumei Sun, Mischa Bonn, Yuki Nagata

The Journal of Physical Chemistry B   2022.8

Polarization-Dependent Sum-Frequency Generation Spectroscopy for Ångstrom-Scale Depth Profiling of Molecules at Interfaces

Chun-Chieh Yu, Takakazu Seki, Yongkang Wang, Mischa Bonn, Yuki Nagata

Physical Review Letters   128 ( 22 )   2022.6

Accurate molecular orientation at interfaces determined by multimode polarization-dependent heterodyne-detected sum-frequency generation spectroscopy via multidimensional orientational distribution function

Chun-Chieh Yu, Sho Imoto, Takakazu Seki, Kuo-Yang Chiang, Shumei Sun, Mischa Bonn, Yuki Nagata

The Journal of Chemical Physics   2022.3

Real-time study of on-water chemistry: Surfactant monolayer-assisted growth of a crystalline quasi-2D polymer

Takakazu Seki, Xiaoqing Yu, Peng Zhang, Chun-Chieh Yu, Kejun Liu, Lucas Gunkel, Renhao Dong, Yuki Nagata, Xinliang Feng, Mischa Bonn

Chem   7 ( 10 )   2758 - 2770   2021.10

Interfacial Water Structure of Binary Liquid Mixtures Reflects Nonideal Behavior

Xiaoqing Yu, Takakazu Seki, Chun-Chieh Yu, Kai Zhong, Shumei Sun, Masanari Okuno, Ellen H. G. Backus, Johannes Hunger, Mischa Bonn, Yuki Nagata

The Journal of Physical Chemistry B   2021.9

Chiral Recognition of Self-Assembled Peptides on MoS2 via Lattice Matching

Linhao Sun, Peiying Li, Takakazu Seki, Shohei Tsuchiya, Kazuki Yatsu, Takuma Narimatsu, Mehmet Sarikaya, Yuhei Hayamizu

Langmuir   37 ( 29 )   8696 - 8704   2021.7

Disentangling Sum-Frequency Generation Spectra of the Water Bending Mode at Charged Aqueous Interfaces

Takakazu Seki, Chun-Chieh Yu, Kuo-Yang Chiang, Junjun Tan, Shumei Sun, Shuji Ye, Mischa Bonn, Yuki Nagata

The Journal of Physical Chemistry B   125 ( 25 )   7060 - 7067   2021.7

The Bending Mode of Water: A Powerful Probe for Hydrogen Bond Structure of Aqueous Systems

Takakazu Seki, Kuo-Yang Chiang, Chun-Chieh Yu, Xiaoqing Yu, Masanari Okuno, Johannes Hunger, Yuki Nagata, Mischa Bonn

The Journal of Physical Chemistry Letters   11 ( 19 )   8459 - 8469   2020.10

Vibrational Couplings and Energy Transfer Pathways of Water’s Bending Mode

Chun-Chieh Yu, Kuo-Yang Chiang, Masanari Okuno, Takakazu Seki, Tatsuhiko Ohto, XIaoqing Yu, Vitaly Korepanov, Hiro-o Hamaguchi, Mischa Bonn, Johannes Hunger, Yuki Nagata

Nature Communications   2020.7

Photoluminescence of CVD-grown MoS2 modified by pH under aqueous solutions toward potential biological sensing

Takakazu Seki, Toshiyuki Ihara, Yoshihiko Kanemitsu, Yuhei Hayamizu

2D Materials   2020.5

In situ bioimaging of Lactobacillus by photoluminescence of MoS2

Sayaka Tezuka, Takakazu Seki, Tomoko Ohnishi, Hironaga Noguchi, Masayoshi Tanaka, Mina Okochi, Yuhei Hayamizu

2D Materials   7 ( 2 )   024002 - 024002   2020.1

Decoding the molecular water structure at complex interfaces through surface-specific spectroscopy of the water bending mode

Takakazu Seki, Chun-Chieh Yu, Xiaoqing Yu, Tatsuhiko Ohto, Shumei Sun, Konrad Meister, Ellen H. G. Backus, Mischa Bonn, Yuki Nagata

Physical Chemistry Chemical Physics   22 ( 19 )   10934 - 10940   2020

Unveiling Heterogeneity of Interfacial Water through the Water Bending Mode

Takakazu Seki, Shumei Sun, Kai Zhong, Chun-Chieh Yu, Kevin Machel, Lisa B. Dreier, Ellen H. G. Backus, Mischa Bonn, Yuki Nagata

The Journal of Physical Chemistry Letters   10 ( 21 )   6936 - 6941   2019.10

Electrochemical Control of Peptide Self-Organization on Atomically Flat Solid Surfaces: A Case Study with Graphite

Takakazu Seki, Christopher R. So, Tamon R. Page, David Starkebaum, Yuhei Hayamizu, Mehmet Sarikaya

Langmuir   2017.11