In biological systems, life process is led by the unique behavior of macromolecules such as proteins and DNA. Molecular recognition by macromolecules plays an important role, for example, in substrate specificity of enzymes and antigen-antibody reactions in human life. Selective molecular recognition among macromolecules is achieved through a large number of weak interactions. We have focused our attention on the special behavior of antibodies, especially monoclonal antibodies, because they can recognize a larger and more complicated compound with high specificity than that can synthetic host molecules or enzymes.
In this laboratory, we develop novel materials through hybridization of bio-related macromolecules such as monoclonal antibodies with artificial/synthetic small molecules. We construct functionalized catalytic and energy conversion systems based on specific molecular recognition of biomacromolecules and selective assembly of bio/synthetic molecules.

MoreNews & Topics

31th Oct, 2025
Dr. Xiao's paper "Reversible Mechanical Interlocking via Stimuli-Triggered Nonhomeomorphic Topology Transformation Enables Highly Efficient Rotaxane Synthesis" has been published in Angewandte Chemie International Edition ( Publications (Papers) have been updated.).
28th Oct, 2025
Li (D2) received the Excellent Poster Prize for his presentation titled "Preparation of Tough Elastomers via Sequentially Activated Multi-Pathway Energy Dissipation" at the 3rd Stoddart Molecular-cum-Supramolecular Science Symposium 2025 (M3S 2025).

23rd Oct, 2025
Fujiwara (M1) received the Excellent Poster Award for his presentation titled "Synthesis, Mechanical Properties, and Degradability Evaluation of Polyurethanes Using Sulfur-Containing Diol Monomers" at the 74th SPSJ Annual Polymer Symposium.

20th Oct, 2025
Dr. Kobayashi received the Young Scientist Award in the "SEKISUI Chemical: Learning from Nature" research program (also featured on the Graduate School of Science website).
18th Oct, 2025
Dr. Kobayashi's sulfur polymer project will participate in the ILS2024 networking event. Please feel free to contact us if you are interested.
17th Oct, 2025
At the 74th Network Polymer Discussion Meeting, Matsuda (M2) ("Development of Functional Composite Materials Using Sulfur-Containing Polymers") and Fujiwara (M1) ("Synthesis and Structure?Property Relationship of Sulfur-Containing Polyurethanes Using Diol Monomers with Different Sulfur Contents") received the Best Poster Award (also featured on the Graduate School of Science website).


16th Oct, 2025
Publications (Conference Presentations) have been updated.
16th Oct, 2025
Dr. Kobayashi received the Japan Thermosetting Plastics Industry Association (JTPA) Academic Encouragement Award (also featured on the Graduate School of Science website).

16th Oct, 2025
Ms. Fujita Yoko joined our group as a Technical Assistant.

9th Oct, 2025
Our review paper authored by Dr. Yoshida and Dr. Kobayashi, titled "Synthesis and Properties of Supramolecular Sulfur-Containing Polymers," has been accepted for publication in Chemistry Letters (Publications).
1st Oct, 2025
Dr. Xiao Chunlin joined the group as a Specially Appointed Researcher.
26th Sep, 2025
Dr. Kobayashi's PRESTO project "Creation of Functional Sulfur Polymer Materials from Waste Sulfur" has been selected for the Science Impact Lab 2025 (SIL2025).

25th Sep, 2025
Dr. Kobayashi received the Grand Prize and Mipox Prize at the Ecotech Grand Prix 2025 (also featured on the Graduate School of Science website).


19th Sep, 2025
Xiao's (D3) paper "Reversible Mechanical Interlocking via Stimuli-Triggered Nonhomeomorphic Topology Transformation Enables Highly Efficient Rotaxane Synthesis" has been published in Angewandte Chemie International Edition (view article).
26th Aug, 2025
Dr. Kobayashi was selected as a finalist for the Ecotech Grand Prix 2025.


22nd Aug, 2025
On September 18th, Kobayashi will present a pitch titled "Creation of Environmentally Harmonious Sulfur Polymer Materials from Surplus Sulfur" at the KSAC DEMODAY 2025. Participation is free for those interested.


8th Aug, 2025
At the Joint Symposium of the 12th Polymer Society of Japan Green Chemistry Division and the 26th Plastic Recycling Chemistry Meeting, Kamioka ("Synthesis and Recycling Properties of Novel Sulfur-Containing Polymers Derived from Elemental Sulfur") and Matsuda ("Investigation of Property Changes through Blending of Sulfur-Containing Polymers") received the Excellent Presentation Award (also featured on the Graduate School of Science website).


1st Aug, 2025
Dr. Yamawaki joined our group as a Specially Appointed Researcher.
16th Jul, 2025
At the 14th JACI/GSC Symposium, Dr. Yoshida received the GSC Poster Award for his presentation "Development of Polymer Materials from Waste Sulfur" (also featured on the Graduate School of Science website).


11th Jul, 2025
On September 19th, Dr. Kobayashi will introduce "Creation of Functional Materials from Waste Sulfur" at the JST Strategic Basic Research Promotion Program: New Technology Presentation.


9th Jun, 2025
An interview article featuring Dr. Kobayashi's research, which won the Grand Prize at the Thinky Science Grant 2023, has been published: "Contributing to Environmental Sustainability through Sulfur Polymers ? What Awatori Rentaro Can Do."


26th May, 2025
At the 33rd Polymer Materials Forum, Kamioka (M2) ("Effect of Sulfur Content on the Properties and Recycling of Sulfur-Containing Polymers") received the Excellent Presentation Award (also featured on the Graduate School of Science website).


21st May, 2025
At the 2025 Annual Meeting of the Society of Rubber Industry, Kamioka (M2) ("Synthesis and Property Evaluation of Sulfur-Containing Polymers Derived from Sulfur and Dihalogen Monomers") received the Young Researcher Excellent Presentation Award, and Toda (M1) ("Ultrafast Synthesis of Sulfur-Containing Polymers from Elemental Sulfur and Epihalohydrin") received the Poster Excellent Presentation Award (also featured on the Graduate School of Science website).


28th Apr, 2025
Dr. Kobayashi received the Innovation Co-Creation Lecture Award at the 105th Annual Meeting of the Chemical Society of Japan (also featured on the Graduate School of Science website).


1st Apr, 2025
New members for FY2025: one new M1 student and four undergraduate students joined the group (Members updated).
1st Apr, 2025
Dr. Yoshida Takumi joined the group as a Specially Appointed Researcher.
21st Mar, 2025
Dr. Kobayashi received the 65th Leave a Nest Research Grant - Real Tech Fund Award (also featured on the Graduate School of Science website).


6th Jan, 2025
Our paper on "Self-assembled Supramolecular Materials for Substrate Transport by External Stimuli" was published in Macromol. Mater. Eng. (publications updated).
17th Dec, 2024
Kamioka (M1) won won the Poster Award the 35th Elastomer Symposium "Synthesis of polysulfide polymers from monomers having linear sulfur and halogen groups and their characterization".


13th Dec, 2024
publications updated.
12th Dec, 2024
The research project "Creation of polythioesters using waste sulfur as a raw material for building a sustainable society" by Hashimoto (M2), Kamioka (M1), and Assistant Professor Kobayashi was selected forthe 8th "General Research Grant" of the Sasakura Foundation for 2024.


9th Dec, 2024
Hashimoto (M2) won the Poster Award at the 2nd Polymer Bonding Control Symposium "Synthesis of sulfur-containing epoxy cured materials by step-growth polymerization and its applications".


26th Nov, 2024
publications (Conference)updated.
25th Nov, 2024
Kamioka (M1) won the Poster Award the 33rd Polymer Materials Forum "Effect of the number of sulfurs in sulfur-containing polymers on their physical properties and recycling characteristics".(also featured on the Graduate School of Science website).


20th Nov, 2024 We went on a field trip to Suma with our lab. It was a lot of fun!
Thank you to organizer Takumi Hashimoto (M1) for planning this!


15th Oct, 2024 Kamioka (M1) won the Poster Award the 73rd Polymer Symposium "Room-temperature aqueous synthesis of polysulfide polymers and their recycling properties".(also featured on the Graduate School of Science website).


14th Oct, 2024
Kobayashi is accepted into KSAC-GAP Found Step1 PMF.
1st Oct, 2024
Three new technical staff members joined us.
17th Sep, 2024
Kobayashi is accepted into JST-PRESTO.
8th Sep, 2024
Kobayashi is accepted into NEDO project.
8th Aug, 2024
Kamioka (M1) won the Poster Award the 11th Polymer Society Green Chemistry Study Group Symposium and the 25th Plastic Recycling Chemistry Study Group Research Symposium "Room-temperature aqueous synthesis of polymers with different sulfur contents and their recycling characteristics".


6th Aug, 2024
Publications updated.
24th July, 2024
Okamoto is accepted into PQBA - Multidisciplinary PhD Program for Pioneering Quantum Beam Application.
21th July, 2024
Our paper on "Control of sulfur number in sulfur-containing compounds: The effect of base type, equivalent of the base, and reaction solvent in synthesizing linear sulfur" was published in Chem. Lett. (Publications updated. and Recent Work)

17th July, 2024
Our review on "Synthesis of sulfur-containing polymers using a supramolecular science approach" was published in Journal of Network Polymer(Publications updated.).
9th July, 2024
Members updated.
28th June, 2024
Li is accepted into Next Generation Researcher Development Project.
21th June, 2024
Kobayashi won "Excellent Poster Awards" at the Plastic Molding Processing Society 35th Annual Conference.
18th June, 2024
Our review on "Synthesis of supramolecular sulfur-containing polymers and their properties" was published in Journal of the Adhesion Society of Japan(Publications updated.).
17th June, 2024
Kobayashi, Nishimura, and Prof. Yamaguchi won 33th CERI Paper award.
12th June, 2024
Matsubayashi won "Excellent Poster Awards" at the 31th Polymer Material Forum.


17th May, 2024
Kobayaswhi won 15th Bridgestone Soft Material Frontier Award. (Also featured on the Graduate School of Science website).
17th Apr, 2024
Our paper on "Controlled Photoinduced Electron Transfer via Triplet in Polymer Matrix Using Electrostatic Interactions" was published in J. Photochem. Photobiol. A (Publications updated. and Recent Work)

12th Apr, 2024
Our review on "Synthesis of supramolecular sulfur-containing polymers" was published in Journal of The Society of Rubber Industry(Publications updated.).
25th Mar, 2024
Okamoto won Graduate School of Science Award.
22th Mar, 2024
Our paper "Supramolecular polysulfide polymers with metal-ligand interactions" won Top Downloaded Article in 2022.
12th March, 2024
Farewell party for graduate
Congrats graduates!
We wish you luck in all your future endeavors.

4th Mar, 2024
Kobayashi won RETSCH Scientific Challenge Silver Prize.
21th Feb, 2024
Our review on "Synthesis and properties of supramolecular sulfur-containing polymers" was accepted in Journal of the Adhesion Society of Japan (Publications updated.)
10th Feb, 2024
A video of Kobayashi's NEDO project has been released.
1th Feb, 2024
Kobayashi's research on supramolecular sulfur-containig polymers was introduced at the Division topics (Macromolecules) in CSJ.
13th Dec, 2023
Kobayashi's research on sulfur-containig polymers was introduced at the Co-Creation Bureau.
7th Dec, 2023
Kobayashi, Nishimura, Hashimoto, Horiguchi, and Prof. Yamaguchi won 31th CERI Paper award.


10th Nov, 2023
Kobayashi's NEDO project"Development of high-performance plastic creation technology using waste sulfur as raw material" was started. ŽáƒTƒ|