Release of the monomer Powderof polyesterSoaked in aqueous NH3100 nm34サイズW3cm×H2.65cm配置位置横0.5cm、縦7.42cminprofessorresearcher’StarOutlook for researchOutlook for students after graduationDepartment ofChemistry and MaterialsDepartment ofChemistry and MaterialsUsing acetyl salicylic acid (aspirin), we have developed a new plastic for easy chemical recycling, a resource circulation through the decomposition to the raw materials and resyntheses. This is a first example of vinyl polymers (polymers consisting of carbon backbone) designed for chemical recycling.Polyesters decomposition in aqueous ammonia. The decomposition changes the solution color yellow by releasing the monomer.Prof. Kohsaka received his Ph. D.from The Tokyo Tech. in 2011. Hestarted his academic carrier as anassistantOsakaUniversity and moved to ShinshuUniversity in 2015. He was selectedin JSPS PRESTO program in 2022. In2023, he is received the title of‘RisingfromShinshu University and ‘the MEXTYoung Scientists' Prize from MEXT.Associate ProfessorTatsuya KameyamaAfter working at JX Nippon Mining & Metals Co., in 2011, he became an Assistant Professor at Nagoya University in 2012, and an Associate Professor at the same institution in 2021. He assumed his current position in April 2025.Associate ProfessorKOHSAKA YasuhiroThese quantum dots are capable of much more than justemitting light. They can convert light energy into electricity(in solar cells) or chemical energy (in photocatalysts), andthey can also be used for light detection (in photodetectors).These extremely small particles have the potentialtorevolutionise energy conversion and sensing technologies.These nanotechnological marvels aim to shed new light onour daily lives, industries and the global environment.Our lab is newly established and has no graduates yet.However, nanomaterials chemistry is widely applied ineveryday life, and we aim to develop talent who will driveinnovation in fieldssuch as electronics, batteries,semiconductors, automotive, and biomedical industries.Transmission electron microscopy (TEM) images of quantum dots. Controlling crystal growth also changes their shape.Photoluminescence of a quantum dot colloidal solution. When exposed to ultraviolet light, it emits a bright visible light.semiconductor and metallicWe are researching the synthesis ofnanoparticles, precisely controlling theirshape, and chemicalsize,composition. Semiconductor particles, grown to just a few nanometers, arecalled "quantum dots" and emit bright light by excitation of electrons. Thesematerials have recently been applied in display technologies, and we aim tosynthesize them using environmentally friendly elements. The light intensityand color of quantum dots depend on their size and shape, so precisecontrol is crucial. Even a 1-nanometer difference can significantly changetheir properties, requiring meticulous attention to detail.Outlook for researchSince polymer chemistry supports chemical industry,we have a chance to discover a new material forpractical application. We always enjoy experiments inpure chemistry, while our group has manycollaborations with inter-/intra-national companiesand research institutes. We innovate a variety ofnovel materials from plastics for a sustainable societywith intelligent materials.Outlook for students after graduationAll students continue their research and studies inmaster program of our graduate school in order tobecome researchers/engineers in polymer andorganic chemistry. Many students then go tocompanies in the chemical industry , while somestudents learn more in our doctoral program.Although polymer materials, e.g. fibers, plastics and rubbers areessential in our daily life, their waste causes social problem such asmarine pollution and depletion of petroleum resources. Prof.Kohsaka investigates the developments of new polymer materialsredesigned from the starting molecules in order to solve theseproblems. For example, he developed a new polymer materialdegradable in aqueous media to environment-friendly chemicals,while a sustainable plastic that regenerates the starting materialswas created. He also innovated a novel method to preparepolyesters with low energy consumption.A Great Chance to Save the World with ‘Epochal Plastic’ through Molecular DesignNano-creation: Synthesis of ultra-small inorganic nanocrystals
元のページ ../index.html#36