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Albrecht K, Taguchi M, Tsukamoto T, Moriai T, Yoshida N, Yamamoto K. Poly-phenylene jacketed tailor-made dendritic phenylazomethine ligand for nanoparticle synthesis. Chem Sci 2022; 13:5813-5817. [PMID: 35685784 PMCID: PMC9132029 DOI: 10.1039/d1sc05661a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 03/05/2022] [Indexed: 11/21/2022] Open
Abstract
Synthesizing metal clusters with a specific number of atoms on a preparative scale for studying advanced properties is still a challenge. The dendrimer templated method is powerful for synthesizing size or atomicity controlled nanoparticles. However, not all atomicity is accessible with conventional dendrimers. A new tailor-made phenylazomethine dendrimer (DPA) with a limited number of coordination sites (n = 16) and a non-coordinating large poly-phenylene shell was designed to tackle this problem. The asymmetric dendron and adamantane core four substituted dendrimer (PPDPA16) were successfully synthesized. The coordination behavior confirmed the accumulation of 16 metal Lewis acids (RhCl3, RuCl3, and SnBr2) to PPDPA16. After the reduction of the complex, low valent metal nanoparticles with controlled size were obtained. The tailor-made dendrimer is a promising approach to synthesize a variety of metal clusters with desired atomicity.
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Affiliation(s)
- Ken Albrecht
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology Yokohama 226-8503 Japan .,JST-ERATO, Yamamoto Atom Hybrid Project, Institute of Innovative Research (IIR), Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan.,Institute for Materials Chemistry, Engineering Kyushu University 6-1 Kasuga-Koen Kasuga-shi 816-8580 Fukuoka Japan
| | - Maki Taguchi
- JST-ERATO, Yamamoto Atom Hybrid Project, Institute of Innovative Research (IIR), Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Takamasa Tsukamoto
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology Yokohama 226-8503 Japan .,JST-ERATO, Yamamoto Atom Hybrid Project, Institute of Innovative Research (IIR), Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Tatsuya Moriai
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology Yokohama 226-8503 Japan
| | - Nozomi Yoshida
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology Yokohama 226-8503 Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology Yokohama 226-8503 Japan .,JST-ERATO, Yamamoto Atom Hybrid Project, Institute of Innovative Research (IIR), Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
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Wang Y, Zhou Q, He X, Zhang Y, Tan H, Xu J, Wang C, Wang W, Luo X, Chen J, Xu L. Dithienylethene metallodendrimers with high photochromic efficiency. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.09.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Tsukamoto T, Tomozawa K, Moriai T, Yoshida N, Kambe T, Yamamoto K. Highly Accurate Synthesis of Quasi‐sub‐nanoparticles by Dendron‐assembled Supramolecular Templates. Angew Chem Int Ed Engl 2022; 61:e202114353. [DOI: 10.1002/anie.202114353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Indexed: 11/05/2022]
Affiliation(s)
- Takamasa Tsukamoto
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
- PRESTO, JST Kawaguchi Saitama 332-0012 Japan
- ERATO, JST Kawaguchi Saitama 332-0012 Japan
| | - Kosuke Tomozawa
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
- Present address: Department of Chemistry School of Sciences The University of Tokyo Tokyo 153-8902 Japan
| | - Tatsuya Moriai
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Nozomi Yoshida
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Tetsuya Kambe
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
- ERATO, JST Kawaguchi Saitama 332-0012 Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
- ERATO, JST Kawaguchi Saitama 332-0012 Japan
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Yamamoto K, Tsukamoto T, Tomozawa K, Moriai T, Yoshida N, Kambe T. Highly Accurate Synthesis of Quasi‐sub‐nanoparticles by Dendron‐assembled Supramolecular Templates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kimihisa Yamamoto
- Tokyo Institute of Technology Chemical Resourses Laboratory 4259 Nagatsuta 226-8503 Yokohama JAPAN
| | | | - Kosuke Tomozawa
- Tokyo Institute of Technology: Tokyo Kogyo Daigaku IIR-CLS JAPAN
| | | | - Nozomi Yoshida
- Tokyo Institute of Technology: Tokyo Kogyo Daigaku IIR-CLS JAPAN
| | - Tetsuya Kambe
- Tokyo Institute of Technology: Tokyo Kogyo Daigaku IIR-CLS JAPAN
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Tsukamoto T, Imaoka T, Yamamoto K. Unique Functions and Applications of Rigid Dendrimers Featuring Radial Aromatic Chains. Acc Chem Res 2021; 54:4486-4497. [PMID: 34859668 DOI: 10.1021/acs.accounts.1c00530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dendrimers, which are highly branched polymers and regarded as huge single molecules, are interesting substances from the aspect of not only polymer chemistry but also molecular chemistry. Various applications in materials science and life science have been investigated by taking advantage of the radially layered structures and intramolecular nanospaces of dendrimers. Most dendrimers have flexible structures that originate from their organic chains which contain many sp3-type atoms, while relatively rigid dendrimers composed only of sp2-type atoms have rarely been reported. It has been recently clarified that such rigid dendrimers exhibit a specific aromatic property not found in other materials. Dendritic phenylazomethines (DPAs), as one of the rigid dendrimers, have only sp2-type C and N atoms and possess a radially branched π-conjugation system in their own macromolecular chains. Such geometric and electronic structures heighten the electron density at the core of the dendrimer and induce an intramolecular potential gradient, which affords unique reactivities that lead to extraordinary functions. This unique property of the rigid dendrimers can be regarded as a new atypical electronic state based on radial aromatic chains not found in conventional aromatic compounds containing spherical aromaticity, Möbius aromaticity, metal aromaticity, and conductive polymers. Therefore, this as-yet-unknown characteristic is expected to contribute to the further development of fundamental and materials chemistry.In this Account, we highlight the rigid DPA dendrimers and their peculiar atomically precise and selective assembly behaviors that originate from the radial aromatic chains. One of the most noteworthy attainments based on the radial aromatic chains is the precise synthesis of a multimetallic multinuclear complex of a dendrimer containing a total of 13 elements. Next, we describe the electrochemical and catalytic functionalization of such multinuclear dendrimer complexes and the construction of supramolecular nanoarchitectures by the polymerization of DPAs. These complexes exhibit encapsulation-release switching of guests and additive-free catalytic ability similar to proteins and enzymes. Such selective and accurate control of the intramolecular assembly of guests and the intermolecular arrangement of hosts realized by the radial aromatic chains of dendrimers will enable supramolecular chemistry and biochemistry to be linked from a new aspect. In addition, the multimetallic multinuclear complexes of dendrimers afford a novel approach to precisely synthesize sub-nanoparticles with ultrasmall particle sizes (1 nm) that have been technically difficult to obtain by conventional nanotechnology. We discuss the method for the synthesis of these sub-nanoparticles with well-controlled atomicity and composition using DPA complexes as a template and recent advances to reveal their specific physical and chemical properties. These results suggest that the unique electronic states induced in such radial aromatics could play an important role in the development of next-generation chemistry.
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Affiliation(s)
- Takamasa Tsukamoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503 Japan
- PRESTO, JST, Kawaguchi, Saitama 332-0012 Japan
- ERATO, JST, Kawaguchi, Saitama 332-0012 Japan
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503 Japan
- ERATO, JST, Kawaguchi, Saitama 332-0012 Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503 Japan
- ERATO, JST, Kawaguchi, Saitama 332-0012 Japan
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Jiao Y, Chu L, Zhu M, Wei Y, Wang W, Wang H, Wang H. UV-curable hyperbranched polyester sealant with tunable mechanical properties. J Biomater Appl 2021; 36:731-739. [PMID: 33940972 DOI: 10.1177/08853282211000527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Different types of wounds have different requirements of a wound sealant. One of the requirements of concern is the adaptability of the mechanical properties of biomaterials to native tissues. However, the mechanical properties of current sealant are untunable or adjustable in a small range normally. Therefore, the scope of application of these sealant is limited. In this study, we developed hyperbranched polyester (HBP)-based UV-curable sealant with tunable mechanical properties. This sealant was cured under UV-light for 2 minutes and exhibited strong adhesion with tissues. The shear adhesive strength of it to the porcine skin ranged between 20-30 kPa, which was higher than the fibrin glue (∼10 kPa). Moreover, the elastic modulus of the sealant in a tensile test ranged between 27-54 MPa, depending on the degree of acrylation of the HBPs. Additionally, we assessed the biocompatibility of the sealant by co-culturing it with mouse mesenchymal stem cells (mMSCs) for 7 days and discovered that the cell viability was unaffected. This sealant with a tunable elastic modulus might be a promising candidate for treating wounds with different elastic moduli.
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Affiliation(s)
- Yan Jiao
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University-Guangzhou, China.,Medical Device Management Branch of Guangdong Primary Medicine Association, Guangzhou, China
| | - Lili Chu
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University-Guangzhou, China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Miaomiao Zhu
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University-Guangzhou, China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yingqi Wei
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Institute of Gastroenterology, Guangzhou, China
| | - Weicai Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Institute of Gastroenterology, Guangzhou, China
| | - Huaiming Wang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University-Guangzhou, China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hui Wang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University-Guangzhou, China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Yamamoto K, Imaoka T, Tanabe M, Kambe T. New Horizon of Nanoparticle and Cluster Catalysis with Dendrimers. Chem Rev 2019; 120:1397-1437. [DOI: 10.1021/acs.chemrev.9b00188] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
- PRESTO-JST, Kawaguchi 332-0012, Japan
| | - Makoto Tanabe
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - Tetsuya Kambe
- Laboratory for Chemistry and Life Science (CLS), Institute of Innovative Research (IIR), Tokyo Institute of Technology, Yokohama 226-8503, Japan
- ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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Kambe T, Hosono R, Imaoka T, Yamamoto K. Ultra-small Bismuth Particle in Dendrimer Protected by Polyvinylpyrrolidone. J PHOTOPOLYM SCI TEC 2018. [DOI: 10.2494/photopolymer.31.311] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tetsuya Kambe
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology
- JST-ERATO, Tokyo Institute of Technology
| | - Reina Hosono
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology
- JST-ERATO, Tokyo Institute of Technology
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology
- JST-ERATO, Tokyo Institute of Technology
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Imaoka T, Bukeo N, Yamamoto K. Epitaxially Grown Ultra-Flat Self-Assembling Monolayers with Dendrimers. Molecules 2018; 23:E485. [PMID: 29473849 PMCID: PMC6017922 DOI: 10.3390/molecules23020485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/13/2018] [Accepted: 02/14/2018] [Indexed: 11/30/2022] Open
Abstract
Mono-molecular films formed by physical adsorption and dendrimer self-assembly were prepared on various substrate surfaces. It was demonstrated that a uniform dendrimer-based monolayer on the subnanometer scale can be easily constructed via simple dip coating. Furthermore, it was shown that an epitaxially grown monolayer film reflecting the crystal structure of the substrate (highly ordered pyrolytic graphite (HOPG)) can also be formed by aligning specific conditions.
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Affiliation(s)
- Takane Imaoka
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 225-8503, Japan.
- ERATO, Japan Science and Technology Agency, Chiyoda 102-0076, Japan.
- PRESTO, Japan Science and Technology Agency, Chiyoda 102-8666, Japan.
| | - Noriko Bukeo
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 225-8503, Japan.
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 225-8503, Japan.
- ERATO, Japan Science and Technology Agency, Chiyoda 102-0076, Japan.
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Kambe T, Haruta N, Imaoka T, Yamamoto K. Solution-phase synthesis of Al 13- using a dendrimer template. Nat Commun 2017; 8:2046. [PMID: 29229924 PMCID: PMC5725416 DOI: 10.1038/s41467-017-02250-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 11/15/2017] [Indexed: 12/02/2022] Open
Abstract
Superatoms, clusters that mimic the properties of elements different to those of which they are composed, have the potential to serve as building blocks for unprecedented materials with tunable properties. The development of a method for the solution-phase synthesis of superatoms would be an indispensable achievement for the future progress of this research field. Here we report the fabrication of aluminum clusters in solution using a dendrimer template, producing Al13-, which is the most well-known superatom. The Al13- cluster is identified using mass spectrometry and scanning transmission electron microscopy, and X-ray photoelectron spectroscopy is used to measure the binding energies. The superatomic stability of Al13- is demonstrated by evaluating its tendency toward oxidation. In addition, the synthesis of Al13- in solution enables electrochemical measurements, the results of which suggest oxidation of Al13-. This solution-phase synthesis of Al13- superatoms has a significant role for the experimental development of cluster science.
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Affiliation(s)
- Tetsuya Kambe
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
- ERATO-JST, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Naoki Haruta
- ERATO-JST, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
- ERATO-JST, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
- PRESTO-JST, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan.
- ERATO-JST, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan.
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Kambe T, Imaoka T, Yamamoto K. Insight into the Effect of Dendrimer Structure on Photoluminescence from Assembled Bismuth Complexes. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0705-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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