Language：English   Publishing type：Research paper (scientific journal)   Publisher：Wiley  

DOI： 10.1002/asia.202101341

PubMed

Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/asia.202101341

Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry ({RSC})  

DOI： 10.1039/D2PY00423B

Publishing type：Research paper (scientific journal)   Publisher：Informa UK Limited  

DOI： 10.1080/21870764.2021.1995939

Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society ({ACS})  

DOI： 10.1021/acs.inorgchem.1c02233

PubMed

Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

DOI： 10.1021/acs.inorgchem.1c00476

Publishing type：Research paper (scientific journal)   Publisher：{IOP} Publishing  

DOI： 10.35848/1882-0786/abff9f

Other Link： https://iopscience.iop.org/article/10.35848/1882-0786/abff9f/pdf

Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media {LLC}  

DOI： 10.1007/s10971-021-05510-4

Scopus

Other Link： https://link.springer.com/article/10.1007/s10971-021-05510-4/fulltext.html

Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry ({RSC})  

<p>The catalytic performance and durability of Ni–Pt alloy nanoparticles synthesized using an alcohol reduction technique were enhanced by controlling the metallic Pt distribution.</p>

DOI： 10.1039/D1NJ01360B

Language：English   Publishing type：Research paper (scientific journal)   Publisher：{IOP} Publishing  

DOI： 10.1088/2399-6528/abee31

Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

DOI： 10.1021/acs.inorgchem.0c03266

Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society ({ACS})  

DOI： 10.1021/acs.jpcc.0c08648

Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society ({ACS})  

DOI： 10.1021/acsnano.0c02521

Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

DOI： 10.1021/acsanm.9b02040

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

DOI： 10.1007/s42452-018-0133-5

Other Link： http://link.springer.com/article/10.1007/s42452-018-0133-5/fulltext.html

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acs.jpcc.8b08012

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jphotochem.2018.01.043

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Nature Publishing Group  

Advanced optical applications of fluorescent carbon dots (C-dots) require highly integrated host-guest solid-state materials with a careful design of C-dots - matrix interface to control the optical response. We have developed a new synthesis based on the grafting of an organo-functional silane (3-glycidyloxypropyltrimethoxysilane, GPTMS) on amino-functionalized C-dots, which enables the fabrication of highly fluorescent organosilica-based hybrid organic-inorganic films through sol-gel process. The GPTMS grafting onto C-dots has been achieved via an epoxy-amine reaction under controlled conditions. Besides providing an efficient strategy to embed C-dots into a hybrid solid-state material, the modification of C-dots surface by GPTMS allows tuning their photoluminescence properties and gives rise to an additional, intense emission around 490 nm. Photoluminescence spectra reveal an interaction between C-dots surface and the polymeric chains which are locally formed by GPTMS polymerization. The present method is a step forward to the development of a surface modification technology aimed at controlling C-dots host-guest systems at the nanoscale.

DOI： 10.1038/s41598-017-05540-5

Scopus

PubMed

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Wiley-VCH Verlag  

DOI： 10.1002/admi.201500802

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：International Union of Crystallography  

The assembly of crystalline building units with specific shape-derived properties into aggregates is often required to broaden their practical applications because the properties of the building units can be fully integrated and used in the aggregates owing to their orientation. Herein, morphology-controlled BiFeO3 aggregates composed of oriented crystalline building units were fabricated via a hydrothermal process without any additives, and the effects of the supersaturation conditions on the aggregation state were investigated. The supersaturation condition, controlled by varying the KOH concentration, was found to affect the shape of the crystalline building units. For lower supersaturation conditions, the morphology of the aggregates was found to be closely related to the shape of the fundamental building units, and the results indicated that oriented attachment occurred between specific crystal faces of the building units. Under a high supersaturation condition, the morphology of the aggregate did not reflect the shape of the building units and a monodispersed spherical aggregate was obtained. Further, the internal microstructures of the aggregates changed from homogeneous and dense to sparse core and dense shell structures with an increasing supersaturation condition. The formation mechanism of these morphology-controlled aggregates is discussed using microstructure analyses. The present approach to control the morphology of aggregates using the shape of the building units and aggregation kinetics could also be applicable for other microcrystalline aggregated systems in addition to BiFeO3.

DOI： 10.1107/S1600576715023845

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry  

Carbon-dots (C-dots) nanocomposites represent a new frontier for highly efficient light-emitting materials with tunable colors in a wide range of the visible spectral region. We have developed a C-dots-ZnO system and the emission is finely controlled through material processing. The C-dots, besides being fluorophores, become a tool for modulating the defects in a ZnO matrix through chemical interactions. Macroporous ZnO films have been prepared via a hard templating route using mesoporous silica spheres which allows full crystallization of the ZnO framework and post-impregnation of large amounts of C-dots within the porous matrix. The photoluminescence spectra are given by a combination of different contributions: C-dots, UV near-band and defect-related ZnO emissions. The reducing action of the C-dots in the ZnO porous matrix allows engineering of the defect-related ZnO emissions. The chromaticity of the nanocomposite, from orange to purple and white, is controlled by adjusting the amounts of C-dots through post-impregnation.

DOI： 10.1039/c6ra09479a

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society  

A one-pot approach making use of a zinc oxide sol precursor and carbon quantum dots, together with a partially fluorinated block copolymer as templating agent, has been used to synthesize a porous matrix characterized by interesting energy transfer properties. The choice of the fluorinated surfactant for inducing the porosity into the inorganic matrix has allowed an easy removal of the templating agent at low temperature, preserving at the same time the functional properties of the carbon quantum dots. The resulting nanocomposite films have been characterized by steady-state 3D mapping that has evidenced a complex behavior as a function of the carbon quantum dots concentration. In particular, the luminescence bands of the zinc oxide matrix appear to be modulated by the broad emission of the carbon quantum dots, which depends on their aggregation state. These results can be thus considered as a step further toward the fine-tuning of the luminescence properties provided by zinc oxide-based nanocomposites as a result of a doping effect due to the presence of carbon quantum dots.

DOI： 10.1021/jp510661d

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1063/1.4900470

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Kluwer Academic Publishers  

Micro-periodic structures exhibiting shape memory have been fabricated on organic-inorganic hybrid films. The microscale structures are obtained by forming wrinkles via buckling of the stiff surface layer. The surface-modified layers are obtained by surface photopolymerization or by oxidation of the hybrid films. The microscale structures are spontaneously formed by the shrinkage of the underlayer via gelation. The surface microstructures on titania- or silica-based films with hydrophilic swellable polymers exhibit a humidity response, i.e., a shape memory effect. This is observed when the surface microstructure disappears and is subsequently recovered with cyclic variation of the surrounding humidity. Micro-rolls are also fabricated by the selective swelling of surface-modified layers. © 2014 Springer Science+Business Media New York.

DOI： 10.1007/s10971-014-3301-0

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

Stimuli-response on hierarchically-structured surface wrinkles is required for advanced filtration, catalysis and sensing applications. Although conventional processes can form hierarchical surface wrinkles, incorporation of stimuli-responsive features has not been achieved, limiting the potential multi-scale functionality of wrinkles. Here, we demonstrate a novel process that can fabricate stimuli-responsive surface hierarchical structures on silica-polymer hybrid films through precisely controlled UV-polymerization and sol-gel condensation. Starting from uniform hybrid films, UV excitation of the film surface triggers the formation of micrometre-scale wrinkles with dual periodicity. Hierarchical nested wrinkle (NW) structures with controllable periodic lengths at discrete size scales of &lt
10 μm and &gt
23 μm show a shape-memory effect with changes in the surrounding humidity. Moreover, the individual responses of wrinkles with different periodicities can be controlled independently. As a proof-of-concept application, we demonstrate that the NW structures are an active size-selective adsorption/release surface for micrometre-sized particles.

DOI： 10.1038/srep00683

Scopus

PubMed

Event date： 2023.7

Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

Event date： 2023.6

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Event date： 2023.3

Language：Japanese   Presentation type：Oral presentation (invited, special)