2020-2022 YAMAGATA UNIVERSITY Research Seeds Collection
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mm004~001 73Preparation of Monodisperse Composite Nano Particles by the MicroreactorProfessor Mitsumasa KimataMonodisperse composite nanoparticles were obtained by using the microreactor.Inner tube fluidOuter tube fluidSyringe pumpMicroreactorBatch reactorContent:Contentπ-Conjugatedmoleculesareafocusofgrowinginterestinawide π-Conjugated molecules are a focus of growing interest in rangeoffields,includingascomponentsinorganicelectronicsanda wide range of fields, including as components in organic fluorescentprobes.Molecularstructuresandhowtheyareassembledelectronics and fluorescent probes. Molecular structures and arecrucialtoapplicationperformance.Higher-orderself-assemblyishow they are assembled are crucial to application neededtoachieveoptimalperformanceinorganicsemiconductors;performance. Higher-order self-assembly is needed to non-assemblyunimolecularbehaviorisdesiredforhighemissionachieve optimal performance in organic semiconductors; efficiencyinfluorescentdyes.Longer-wavelengthspectraobtainednon-assembly unimolecular behavior is desired for high fromextendedπ-conjugatedorpush-pullsystemsarevastlyemission efficiency in fluorescent dyes. Longer-wavelength spectra obtained from extended π-conjugated or push-pull advantageousforvariousapplications.systems are vastly advantageous for various applications.Appealingpoint:Usingsyntheticandphysicalorganicchemistrytechniques,weSpecial objectivesdesignandsynthesizenovelπ-conjugatedmoleculescomprisingaromaticunitsasafundamentalframework.Further,byemploying Using synthetic and physical organic chemistry supramolecularchemistrytocontrolmolecularstructuresandfine-techniques, we design and synthesize novel π-conjugated tunetheuniquecharacteristicsofmolecularassemblies,wearemolecules comprising aromatic units as a fundamental developingnovelhigh-performancefunctionalmaterialswiththeframework. Further, by employing supramolecular chemistry potentialforapplicationinthefieldsoforganicelectronics,to control molecular structures and fine-tune the unique characteristics of molecular assemblies, we are developing fluorescentprobes,andchemicalsensors.novel high-performance functional materials with the potential for application in the fields of organic electronics, Yamagata University Graduate School of Organic Materials Sciencefluorescent probes, and chemical sensors.Research Interest: Synthetic Organic ChemistryPhysical Organic ChemistrySupramolecular ChemistryContent:ContentTheliquidphasesynthesissuchassol-gelmethodortheprecipitationmethodwasabletopreparemonodispersecomposite The liquid phase synthesis such as sol-gel method or the precipitation method was able to prepare monodisperse nanoparticleinthemulticomponentsystemrelativelyeasilybyusingcomposite nanoparticle in the multicomponent system aconcentrictubetypemicroreactor.Asthisdevicewasconcentricrelatively easily by using a concentric tube type multitubestructure,theadhesiontothewalloftheformedparticlesmicroreactor. As this device was concentric multi tube wascontrolled.Themicroreactorwasflowreactorhavingmicrostructure, the adhesion to the wall of the formed particles channelfromtensmicrontoseveralmillimeter.Therefore,particleswas controlled. The microreactor was flow reactor having weresynthesizedcontinuously,andupsizingofthedevicewouldbemicro channel from tens micron to several millimeter. possiblebytechniqueofthe"equalingup"andthe"numberingup".Therefore, particles were synthesized continuously, and Wecouldpreparethefunctionalnanoparticlesincludingvariousupsizing of the device would be possible by technique of the “equaling up” and the “numbering up”. We could prepare the kindsofelements,ifweusethismicroreactorwhichcouldcontrolafunctional nanoparticles including various kinds of elements, reactionprecisely.if we use this microreactor which could control a reaction precisely.Appealing point:ThenanoparticlecouldbepreparedbynotonlythesynthesisSpecial objectivesreactionbutalsothemechanochemicaleffectbythegrinding.Pleasecontactourlaboratoryifinterestedinnanoparticle.And,ifresearch The nanoparticle could be prepared by not only the synthesis reaction but also the mechanochemical effect by seedswereutilized,wewouldworkonuniversity-industryresearchthe grinding. Please contact our laboratory if interested in collaborationpositively.nanoparticle. And, if research seeds were utilized, we would work on university-industry research collaboration positively.Yamagata UniversityGraduate School of Science and Engineering Research Interest :Powder technologyYamagata University Graduate School of Science and Engineering E-mail :kimata@yz.yamagata-u.ac.jpResearch InterestTel :+81-238-26-3157Powder technologyFax:+81-238-26-3157E-mail ・ kimata@yz.yamagata-u.ac.jpTel ・ +81-238-26-3157Fax ・ +81-238-26-3157HP :http://acebe.yz.yamagata-u.ac.jp/laboratory/HP・http://acebe.yz.yamagata-u.ac.jp/laboratory/Yamagata University Graduate School of Organic Materials ScienceSynthetic Organic ChemistryResearch InterestPhysical Organic ChemistryE-mail:kgri7078@yz.yamagata-u.ac.jpSupramolecular ChemistryTel&Fax:+81-238-26-3743E-mail ・ kgri7078@yz.yamagata-u.ac.jpTel & Fax ・ +81-238-26-3743HP:http://katagiri.yz.yamagata-u.ac.jp/HP・http://katagiri.yz.yamagata-u.ac.jp/Fig.1 Concentric microreactorFig.3 SEM images of the productsnano size100nmMonodispersed Co-Li-O particleCu + Cu2O spherical particle1580µm200~1220µm3000µmsub micron100nm1μmMonodispersed silica particleFig.2 Batch reactormicron size1μmCu + Cu2O polyhedral particleDesign and Synthesis of π-Conjugated Organic Small MoleculesProfessor Hiroshi KatagiriDesign and Synthesis of π-Conjugated Organic Small MoleculesPreparation of Monodisperse Composite Nano Particles by the MicroreactorProfessor MitsumasaKimataProfessor Hiroshi Katagiri

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