Details of a Researcher - Banno, Taisuke

Banno, Taisuke

写真a

Affiliation: Faculty of Science and Technology, Department of Applied Chemistry (Yagami)

Position: Associate Professor

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Career 【 Display / hide 】

2009.04

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2011.03

日本学術振興会, 特別研究員(DC2)
2009.04

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2011.03

日本学術振興会特別研究員(DC2)
2011.04

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2015.03

東京大学大学院, 総合文化研究科, 助教
2011.04

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2015.03

Graduate School of Arts and Sciences, The University of Tokyo, Assistant Professor
2012.11

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2013.01

マンチェスター大学, 化学科, 訪問研究員

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Academic Background 【 Display / hide 】

2002.04

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2006.03

Keio University, 理工学部, 応用化学科

University, Graduated
2002.04

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2006.03

Keio University, Faculty of Science and Technology, Department of Applied Chemistry
2006.04

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2008.03

Keio University, 理工学研究科, 基礎理工学専攻

Graduate School, Completed, Master's course
2006.04

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2008.03

Keio University, 理工学研究科, 基礎理工学専攻（前期博士課程）
2008.04

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2011.03

Keio University, 理工学研究科, 基礎理工学専攻

Graduate School, Completed, Doctoral course

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Academic Degrees 【 Display / hide 】

博士（工学）, Keio University, Coursework, 2011.03

カーボネート結合を有する新規グリーンサーファクタントの創成

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Research Areas 【 Display / hide 】

Nanotechnology/Materials / Nanometer-scale chemistry
Nanotechnology/Materials / Nanostructural physics
Nanotechnology/Materials / Nano/micro-systems
Nanotechnology/Materials / Functional solid state chemistry
Nanotechnology/Materials / Green sustainable chemistry and environmental chemistry

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Research Keywords 【 Display / hide 】

Colloid and Interface Chemistry
protocell
self-assembly
organic chemistry
surface chemistry

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Books 【 Display / hide 】

Self-organized Motion: Physicochemical Design based on Nonlinear Dynamics

Banno Taisuke, Royal Society of Chemistry, 2019.01

Scope: Synthetic Approaches to Control Self-propelled Motion of Micrometre-sized Oil Droplets in Aqueous Solution
Properties and Uses of Microemulsions

T. Banno, T. Toyota, K. Asakura, InTech, 2017

Scope: Self-Propelled Motion of Micrometer-Sized Oil Droplets in Aqueous Solution of Surfactant
エマルションの特性評価と新製品開発，品質管理への応用

伴野太祐, 豊田太郎, 技術情報協会, 2014

Scope: 界面活性剤水溶液中での油滴の遊走現象計測
Biodegradation Life Science

Taisuke Banno, Taro Toyota, Shuichi Matsumura, InTech, 2013

Scope: Creation of Novel Green Surfactants Containing Carbonate Linkages

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Papers 【 Display / hide 】

Machine learning prediction of self-assembly and analysis of molecular structure dependence on the critical packing parameter

Y Ishiwatari, T Yokoyama, T Kojima, T Banno, N Arai

Molecular Systems Design & Engineering 9 (1), 20-28 (Molecular Systems Design and Engineering) 9 ( 1 ) 20 - 28 2024

Lead author, Last author, Corresponding author, Accepted, ISSN 2058-9689

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Amphiphilic molecules spontaneously form self-assembly structures depending on physical conditions such as the molecular structure, concentration, and temperature. These structures exhibit various functionalities according to their morphology. The critical packing parameter (CPP) is used to correlate self-organized structures with the chemical composition. However, accurately calculating it requires information about both the molecular shape and molecular aggregates, making it challenging to apply directly in molecular design. We aimed to predict the self-assembled structure of a molecule directly from its chemical structure and to analyze the factors influencing it using machine learning. Dissipative particle dynamics simulations were used to reproduce many self-assembly structures comprising various chemical structures, and their CPPs were calculated. Machine learning models were built using the chemical structures as input data and the CPPs as output data. As a result, both random forest and the gated recurrent unit showed high prediction accuracy. Feature importance analysis and sample size dependence revealed that the amphiphilic nature of molecules significantly influences the self-assembly structures. Additionally, selecting an appropriate molecular structure representation for each algorithm is crucial. The study results should contribute to product development in the fields of materials science, materials chemistry, and medical materials.
- Access to Document (DOI)
Bifurcation and Transposition of the Wicking Front of Binary Solutions Infiltrating into Chromatography Paper Associated with Their Evaporation

Amiko Aizawa, Taisuke Banno, Kouichi Asakura

Langmuir (American Chemical Society (ACS)) 39 ( 47 ) 16731 - 16739 2023.11

Lead author, Last author, Corresponding author, Accepted, ISSN 0743-7463
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Photoinduced phase transition between vesicles and coacervates using low-molecular-weight catanionic amphiphiles

Tomoya Kojima, Koichi Terasaka, Kouichi Asakura, Taisuke Banno

Colloids and Surfaces A: Physicochemical and Engineering Aspects (Colloids and Surfaces A: Physicochemical and Engineering Aspects) 669 2023.07

Lead author, Last author, Corresponding author, Accepted, ISSN 0927-7757

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Amphiphiles form various molecular self-assemblies in the aqueous phase, such as vesicles and coacervates, depending on molecular properties. Recently, phase transitions between vesicles and coacervates have drawn much attention because the switching between “closed” and “open” compartments could achieve the controllability of molecular sequestrations. We expect that the photoinduced drastic change in the molecular structure of catanionic amphiphiles comprising azobenzene-containing cationic amphiphiles (Azo) and anionic sodium dodecyl sulfate causes the transition. Self-assemblies prepared by a thin-film hydration method were observed using microscopy under UV and subsequent visible-light illumination. Additionally, investigation of selectivity for molecular sequestration and assay of enzymatic reactions in the self-assemblies were conducted. Photoinduced reversible phase transitions between vesicles and coacervates occurred owing to the photoisomerization of Azo. The formed coacervates had selectivity for molecular sequestration. Additionally, the transition achieved fusion of different vesicles via coacervates. Although coacervates are generally known to facilitate enzymatic reactions, the reactions were inhibited in the presence of the formed self-assemblies due to the deactivation of enzymes. Our results represent rapid and non-invasive systems of reversible vesicle–coacervate transitions. Furthermore, the findings provide a new aspect of coacervates in which catanionic low-molecular-weight amphiphiles could act as suppressors of chemical reactions.
- Access to Document (DOI)
Factors to control the alignment of surface-treated titanium dioxide powders to maximize performance of sunscreens.

Shoji Takekawa, Miwa Ohara, Taisuke Banno, Kouichi Asakura

International journal of cosmetic science (International Journal of Cosmetic Science) 45 ( 1 ) 38 - 49 2023.02

Lead author, Last author, Corresponding author, Accepted, ISSN 0142-5463

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OBJECTIVE: Titanium dioxide powders are contained in a large class of colour cosmetics and sunscreen formulas. When they are used, the formation of a uniform functional powder layer on the skin is an important factor to show their functionality, such as aesthetic and UV protection. Attempts were made to extract the factors that affect the UV shielding ability of the deposited powder layer. METHODS: Seven kinds of surface treatments were conducted on nano-sized titanium dioxide powder to modify the surface characteristics. Dispersion samples were prepared by mixing these powders with liquids, such as mixed solutions of cyclopentasiloxane, isododecane, coconuts alkane and dimethicone using a disperser and a bead mill. The dispersions were applied using an applicator on cellulose triacetate film, polycarbonate film and polymethyl pentene film. Laser microscope observation and micro-gloss glossmeter analysis were carried out to assess the flatness of the deposited powder layers, and the UV shielding ability was evaluated using SPF analyser. RESULTS: Factors whose influences on the structure and UV shielding ability of the deposited powder layer being analysed were pseudo-HLB of the powders, liquids for preparing the dispersions and material of the substrates. Higher UV shielding ability was attained when powders having pseudo-HLB at around 6 were employed independent from the kinds of liquids and substrates. Flatness of the deposited layer was found to enhance the UV shielding ability of the UV-B region, while that of the UV-A region was scarcely influenced by the flatness. Employing lower surface tension liquids for preparing the dispersions and materials exhibiting lower polar components of surface free energy as substrates tended to enhance the UV shielding ability. CONCLUSION: Surface treatments conducted on the powders in this study were found to change UV shielding ability, especially UV-B shielding ability, and the relation between pseudo-HLB and UV shielding ability was scarcely influenced by the kinds of liquids. Both surface tension of liquids and the polar component of surface free energy of substrates affected the UV shielding ability. It was suggested that pseudo-HLB calculated based on chemical structure becomes useful information to choose optimum surface treatment to make uniform powder alignment independent from the surrounding environment.
- Access to Document (DOI)
Photoinduced collective motion of oil droplets and concurrent pattern formation in surfactant solution

Tomoya Kojima, Hiroyuki Kitahata, Kouichi Asakura, Taisuke Banno

Cell Reports Physical Science (Elsevier BV) 4 ( 1 ) 101222 - 101222 2023.01

Lead author, Last author, Corresponding author, Accepted, ISSN 2666-3864

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Collective motions are the spontaneous emergence of the ordered movement in living systems. Various constructive approaches have been attempted toward understanding the mechanism. However, few studies have been on the motion induced by biomimetic artificial systems based on molecular conversions. In this study, we report an artificial system of oil droplets in surfactant solutions, wherein collective motion and pattern formation occur concurrently, using the conversion of photoresponsive surfactants. Assembly/dispersion of multiple oil droplets and appearance/disappearance of circular patterns around them occur under UV/visible light illumination, respectively. Moreover, whether the assembled droplets move laterally or not depends on the number of droplets, which is considered analogous to biological organisms in response to population density. These phenomena occur because the photoisomerization of surfactants induces the gradient of interfacial tension, generating specific flow fields around droplets. Our results could be useful for understanding the mechanism of life motion in terms of physicochemical aspects.
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Papers, etc., Registered in KOARA 【 Display / hide 】

Molecular species-dependent motion modes of droplets in surfactant solution

Banno, Taisuke

学事振興資金研究成果実績報告書 (慶應義塾大学) 2022
Transformation of self-propelled droplets induced by molecular conversions

Banno, Taisuke

科学研究費補助金研究成果報告書 2020
Development of highly functional on-demand vesicles by synthetic approaches

Banno, Taisuke

学事振興資金研究成果実績報告書 (慶應義塾大学) 2018
Development of highly functional on-demand vesicles by synthetic approaches

Banno, Taisuke

学事振興資金研究成果実績報告書 (慶應義塾大学) 2017
Construction of chemical transport systems using self-propelled oil droplets

Banno, Taisuke

科学研究費補助金研究成果報告書 2017

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Presentations 【 Display / hide 】

ペプチド被膜型紫外線吸収剤油滴が分散したO/Wエマルションの希釈安定性

田中三代子、伴野太祐、朝倉浩一、村井将紀、脇田和晃、井村知弘

日本化学会第98春季年会,

2018.03
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Oral presentation (general)
Dynamics of Self-Propelled Oil Droplets Induced by the Generation of Surfactants

Taisuke Banno, Yui Kasuo, Yuki Koyano, Masahiro Takinoue, Hiroyuki Kitahata, Kouichi Asakura

日本化学会第98春季年会,

2018.03
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Oral presentation (general)
界面活性剤の物理化学的性質により誘起される油滴の運動モード

廣野綾菜、豊田太郎、朝倉浩一、伴野太祐

第27回非線形反応と協同現象研究会,

2017.12
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Poster presentation
Soai反応系におけるランダムな挙動に対する生成物沈殿化の影響の解析

井村茉貴、伴野太祐、朝倉浩一

第27回非線形反応と協同現象研究会,

2017.12
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Poster presentation
Self-Propelled Motion of Droplets in O/W Emulsion Containing Amphiphilic Fumaric Acid Derivatives

M. Kaburagi, K. Asakura, T. Banno

The Asian Conference on Oleo Science 2017,

2017.09
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Oral presentation (general)

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

Spatiotemporally developed self-propelled objects

2020.04

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2024.03

Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), No Setting

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当該年度に実施した、非線形科学に立脚した自己駆動体の構築に関する研究成果は次のとおりである。
１．可逆的走化性の実験系の構築：これまでの無生物自己駆動体による走化性の研究報告のほとんどが、正または負の単指向走化性のみであった。ところが実際の生物では、採餌等走化性の目的を達したら、その場から立ち去ることができる可逆的走化性である。そこで本研究では、可逆的走化性を示す自己駆動体の構築を目的とした。具体的には、自己駆動体として6-メチルクマリン（6-MC）円板を使用し、塩基の化学刺激としてリン酸三ナトリウムを使用した。その結果、表面張力の高い化学刺激に対して表面張力の低い自己駆動体が正の走化性を示し、化学刺激上でトラップされる一方、塩基と6-MCとの化学反応が終わると、化学刺激上から脱出できる、可逆的走化性の構築に成功した。そして駆動力である表面張力測定、ｐH指示薬による時空間的ｐHの可視化、及び反応拡散方程式と運動方程式からなる数理モデルによる数値計算によって、可逆的走化性の機構を解明した。
２．酵素反応とカップリングした特徴的な運動様相を示す自己駆動体の構築：酵素反応系は、化学振動反応等、非線形性の高い化学反応と知られている。そこで本研究では、自己駆動体の自律性と非線形性を高めるため、酵素反応とカップリングした自己駆動体の構築を目的とする。具体的には、ウレアーゼの反応速度のｐH依存性（ベル型特性）を活用した。その結果、初期ｐHを弱酸性にすると、尿素発生によるｐH上昇が反応速度を高めるポジティブフィードバックが働き、振動運動を誘発することを明らかにした。その機構を明らかにするために、ｐH指示薬によるｐHと運動速度の同時測定を行った。
３．界面活性剤存在下における自己駆動体の深さ依存性：反応拡散系に基づき、ドデシル硫酸ナトリウム上で運動する樟脳円板と水層の深さ依存性について解明した。
Transformation of self-propelled droplets induced by molecular conversions

2018.04

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2021.03

MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Principal investigator
ヒステリシス性を有するジャイアントベシクルの開発

2018.04

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2019.03

公益財団法人池谷科学技術振興財団, 2018年度助成金, Principal investigator
有機化学的アプローチによる高機能性オンデマンド型ベシクルの開発

2017.04

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2018.03

Keio Gijuku Academic Development Funds, Other, Principal investigator
両性界面活性剤水溶液中でのpHによる微小油滴の運動制御

2017.04

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2018.03

一般財団法人　油脂工業会館, 研究助成, Other, Principal investigator

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Awards 【 Display / hide 】

Select Lectures Award

T. Banno, M. Kaburagi, S. Nakayama, K. Asakura, 2022.08, 2nd World Congress on Oleo Science 2022
2021オレオマテリアル賞

伴野太祐, 2021.09, 日本油化学会オレオマテリアル部会
Award for Best Paper of 2017

J. Čejková, T. Banno, M. M. Hanczyc, F. Štěpánek, 2018.07, International Society for Artificial Life
日本化学会第 92 春季年会(2012)優秀講演賞（学術）

伴野太祐, 2012.04, 公益社団法人日本化学会, ベンズアルデヒド誘導体および長鎖アルコールを混合した油滴の自己駆動と分裂のカップリング
2010 American Cleaning Institute (ACI) Award

Banno Taisuke, Kawada Kazuo, Matsumura Shuichi, 2011.05, American Oil Chemists’ Society