担当区分：筆頭著者   掲載種別：研究論文（学術雑誌）  

DOI： 10.1021/acs.jpcb.4c01821

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

<jats:title>Abstract</jats:title><jats:p>Alternative strategies to design sustainable‐element‐based electrocatalysts enhancing oxygen evolution reaction (OER) kinetics are demanded to develop affordable yet high‐performance water‐electrolyzers for green hydrogen production. Here, it is demonstrated that the spontaneous‐spin‐polarized 2D π‐d conjugated framework comprising abundant elements of nickel and iron with a ratio of Ni:Fe = 1:4 with benzenehexathiol linker (BHT) can improve OER kinetics by its unique electronic property. Among the bimetallic NiFe<jats:sub>x:y</jats:sub>‐BHTs with various ratios with Ni:Fe = x:y, the NiFe<jats:sub>1:4</jats:sub>‐BHT exhibits the highest OER activity. The NiFe<jats:sub>1:4</jats:sub>‐BHT shows a specific current density of 140 A g<jats:sup>−1</jats:sup> at the overpotential of 350 mV. This performance is one of the best activities among state‐of‐the‐art non‐precious OER electrocatalysts and even comparable to that of the platinum‐group‐metals of RuO<jats:sub>2</jats:sub> and IrO<jats:sub>2</jats:sub>. The density functional theory calculations uncover that introducing Ni into the homometallic Fe‐BHT (e.g., Ni:Fe = 0:1) can emerge a spontaneous‐spin‐polarized state. Thus, this material can achieve improved OER kinetics with spin‐polarization which previously required external magnetic fields. This work shows that a rational design of 2D π‐d conjugated frameworks can be a powerful strategy to synthesize promising electrocatalysts with abundant elements for a wide spectrum of next‐generation energy devices.</jats:p>

DOI： 10.1002/smll.202401987

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担当区分：筆頭著者   掲載種別：研究論文（学術雑誌）  

DOI： 10.1021/acs.chemmater.3c02969

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担当区分：筆頭著者   掲載種別：研究論文（学術雑誌）  

DOI： 10.1039/D2SM01604D

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担当区分：筆頭著者   掲載種別：研究論文（学術雑誌）  

DOI： 10.1039/D2MH01490D

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media {LLC}  

<jats:title>Abstract</jats:title><jats:p>In this study, we show the controlled self-oscillation behavior (i.e., the normalized amplitude, swelling rate, and deswelling rate) of self-oscillating gels by introducing grafted chains. The grafted chain was introduced to the base gel network by the “grafting from” method and atom-transfer radical polymerization (ATRP). We demonstrated that the properties of the grafted chain, including the monomer composition and length of the chain, can lead to notable self-oscillation behavior. The strategy in this study can pave the way for realizing the desirable operational functions of biomimetic actuators.</jats:p>

DOI： 10.1038/s41427-022-00360-0

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Royal Society of Chemistry ({RSC})  

<jats:p>Heartbeats with different ventricular contraction vary with heart regions, which can be described as anisotropy. Herein, we report self-oscillating gels which exhibit region-dependent anisotropic volumetric oscillation behavior similar to that...</jats:p>

DOI： 10.1039/d2tb01838a

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：{MDPI} {AG}  

<jats:p>Pathologic fibrosis around silicone implants is problematic, and thus, these implants have been coated with a mixture of a biocompatible polymer and antifibrotic drug for sustained drug release to prevent fibrosis. However, a coating applied over an entire surface would be subject to mechanical instability as the implant would be severely crumpled for implant insertion. Therefore, in this work, we proposed localized, patterned coating dots, each composed of poly(lactic-co-glycolic acid) (PLGA) and tranilast, to be applied on the surface of silicone implants. The drug loaded in the pattern-coated implant herein was well retained after a cyclic tensile test. Due to the presence of PLGA in each coating dot, the tranilast could be released in a sustained manner for more than 14 days. When implanted in a subcutaneous pocket in living rats for 12 weeks, compared with the intact implant, the pattern-coated implant showed a decreased capsule thickness and collagen density, as well as less transforming growth factor-β (TGF-β) expression and fewer fibroblasts; importantly, these changes were similar between the surfaces with and without the coating dots. Therefore, we conclude that the pattern-coating strategy proposed in this study can still effectively prevent fibrosis by maintaining the physical stability of the coatings.</jats:p>

DOI： 10.3390/polym11020223

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media {LLC}  

DOI： 10.1007/s13233-016-4064-y

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：{SAGE} Publications  

<jats:p> In this study, we proposed a potential method for the preparation of a magnesium-based medical device for local drug delivery and controlled corrosion. A magnesium surface was modified with 3-aminopropyltrimethoxy silane, and the resulting surface was then coated with drug-loaded nanoparticles made of poly (lactic-co-glycolic acid) via electrophoretic deposition. The drug-loaded nanoparticles (i.e., Tr_NP) exhibited a size of 250 ± 67 nm and a negative zeta potential of −20.9 ± 2.75 mV. The drug was released from the nanoparticles in a sustained manner for 21 days, and this did not change after their coating on the silane-modified magnesium. The silane-modified surface suppressed magnesium corrosion. When immersed in phosphate buffered saline at pH 7.4, the average rate of hydrogen gas generation was 0.41–0.45 ml/cm<jats:sup>2</jats:sup>/day, compared to 0.58–0.6 ml/cm<jats:sup>2</jats:sup>/day from a bare magnesium surface. This corrosion profile was not significantly changed after nanoparticle coating under the conditions employed in this work. The in vitro cell test revealed that the drug released from the coating was effective during the whole release period of 21 days, and both the silane-modified surface and carrier nanoparticles herein were not cytotoxic. </jats:p>

DOI： 10.1177/0885328215582110

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier {BV}  

DOI： 10.1016/j.jconrel.2015.10.027

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1118/1.4919445

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