1
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Yonezawa H, Naka K, Imoto H. Open and Closed Cage Silsesquioxane Dimers. Chempluschem 2024:e202400301. [PMID: 38967957 DOI: 10.1002/cplu.202400301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/18/2024] [Accepted: 07/05/2024] [Indexed: 07/06/2024]
Abstract
Polyhedral oligomeric silsesquioxane (POSS) is an organic-inorganic hybrid molecule with two structural variations, closed- and open-cage configurations, referred to as completely condensed POSS (CC-POSS) and corner-opened POSS (CO-POSS), respectively. In this study, we synthesized 12 dimers by combining CC- and CO-POSS variants decorated with isobutyl or phenyl substituents to explore their structure-property relationships. The choice of substituents, both at the cage vertices and open sites, significantly affected the thermal and optical properties of the materials. Modifying the substituents on CO- and CC-POSS, which are isomers, led to significant alterations in the material properties. Notably, isomer-bearing carbazole substituents exhibited a substantially higher quantum yield (0.32) than its counterpart isomer (0.13), underscoring the crucial role of structural nuances in determining material performance. These results offer valuable insights for the design of novel silsesquioxane-based materials.
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Affiliation(s)
- Honoka Yonezawa
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
- FOREST, Japan Science and Technology Corporation (JST), Honcho 4-1-8, Kawaguchi, Saitama, 332-0012, Japan
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2
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Fuchs K, Nizioł E, Ejfler J, Zierkiewicz W, Władyczyn A, John Ł. What do we know about bifunctional cage-like T 8 silsesquioxanes? Theory versus lab routine. Dalton Trans 2023; 52:16607-16615. [PMID: 37791497 DOI: 10.1039/d3dt02638h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
In this article, we explore theoretical validations of experimental findings pertaining to the classical corner-capping reactions of a commercially available heptaisobutyltrisilanol cage to mono-substituted phenylhepta(isobutyl)-POSS cages. Additionally, the process of opening a fully condensed cage is tracked to assess the possibility of isolating and separating the resulting isomers. The corner-capping reactions of potential silanotriols, both as monomers and dimers, and the impact of these structural motifs on their closing to bifunctional POSS cages are also investigated. Our studies highlight that analyzing experimental results alone, without incorporating complex theoretical investigations, does not offer a clear understanding of the reactions involving multiple simultaneously reacting substrates, which may also undergo further transformations, potentially complicating the conventional pathways of classic corner-opening/capping reactions.
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Affiliation(s)
- Kamila Fuchs
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Edyta Nizioł
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Jolanta Ejfler
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Wiktor Zierkiewicz
- Faculty of Chemistry, Wrocław University of Science and Technology, 27 Wybrzeże Wyspiańskiego, 50-370 Wrocław, Poland
| | - Anna Władyczyn
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Łukasz John
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
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3
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Various Approaches to Studying the Phase Transition in an Octamethylcyclotetrasiloxane Crystal: From X-ray Structural Analysis to Metadynamics. Int J Mol Sci 2022; 23:ijms23169073. [PMID: 36012340 PMCID: PMC9408834 DOI: 10.3390/ijms23169073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/05/2022] [Accepted: 08/10/2022] [Indexed: 11/29/2022] Open
Abstract
The structure, thermodynamic parameters, and the character of thermal motion in octamethylcyclotetrasiloxane (D4) were investigated using the combination of experimental (single-crystal X-ray diffraction, thermochemistry) and theoretical (density functional theory calculations, ab initio molecular dynamics and metadynamics) methods. Single crystals of D4 were grown in a glass capillary in situ and the structures of high- (238–270 K) and low-temperature (100–230 K) phases were studied in detail. In the temperature interval 230–238 K, a phase transition with rather low enthalpy (−1.04(7) kcal/mol) was detected. It was found that phase transition is accompanied by change of conformation of cyclosiloxane moiety from boat-saddle (cradle) to chair. According to PBE0/6-311G(d,p) calculation of isolated D4, such conformation changes are characterized by a low barrier (0.07 kcal/mol). The character of molecular thermal motion and the path of phase transition were established with combination of periodic DFT calculations, including molecular dynamics and metadynamics. The effect of crystal field led to an increase in the calculated phase transition barrier (4.27 kcal/mol from low- to high-temperature phase and 3.20 kcal/mol in opposite direction).
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4
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Single-component optically transparent film of a star-shaped cage silsesquioxane derivative and its phase change behavior. Polym J 2022. [DOI: 10.1038/s41428-022-00674-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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5
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Igarashi A, Imoto H, Naka K. Polymethacrylates containing cage-silsesquioxanes in the side chains: effects of cage and linker structures on film properties. Polym Chem 2022. [DOI: 10.1039/d1py01709h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Polymers in which cage-silsesquioxanes were tethered through urethane linkers, were newly synthesized. The free-standing films were supported by the hydrogen bonding networks. Their properties were dependent on the cage structure.
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Affiliation(s)
- Amato Igarashi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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6
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Mrzygłód A, Kubicki M, Dudziec B. Vinyl- and chloromethyl-substituted mono-T 8 and double-decker silsesquioxanes as specific cores to low generation dendritic systems. Dalton Trans 2021; 51:1144-1149. [PMID: 34939635 DOI: 10.1039/d1dt04012j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the series of G1 and G1.5 dendritic systems with mono-T8 SQs and DDSQ as specific types of dendron and dendrimer cores, respectively. The trivinyl- and tri(chloromethyl)-derivatives were obtained via hydrolytic condensation followed by the hydrosilylation reaction, optimized to yield selectively β-products. Their structures were confirmed by spectroscopic and XRD analyses. It is the first example of double-decker SQs used as cores for the construction of a low generation of dendrimer featuring specific dumbbell frameworks expanding in two or four directions.
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Affiliation(s)
- Aleksandra Mrzygłód
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland. .,Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland
| | - Maciej Kubicki
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland.
| | - Beata Dudziec
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland. .,Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland
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7
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Okamoto K, Igarashi A, Imoto H, Naka K. Reversible addition‐fragmentation chain transfer cyclopolymerization of dimethacryloyl open‐cage silsesquioxane. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Keigo Okamoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan
| | - Amato Igarashi
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Kyoto Japan
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8
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Soldatenko AS, Lazareva NF. Cyclic hybrid compounds based on 1,3- and 1,5-dichlorosiloxanes and 2,2′-dihydroxyazobenzene. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3071-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Adachi Y, Nabeya T, Kawakami K, Yamaji K, Jäkle F, Ohshita J. Optical Characteristics of Hybrid Macrocycles with Dithienogermole and Tricoordinate Boron Units. Chemistry 2021; 27:3306-3314. [PMID: 33314389 DOI: 10.1002/chem.202004643] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/30/2020] [Indexed: 01/31/2023]
Abstract
The introduction of unconventional elements into π-conjugated systems has been studied to manipulate the electronic states and properties of compounds. Herein, boron- and germanium-containing hybrid macrocycles, as a new class of element-hybrid conjugated systems, have been synthesized. The palladium-catalyzed Stille cross coupling of bis(bromothienyl)borane and bis(trimethylstannylthienyl)- or bis(trimethylstannylphenyl)-substituted dithienogermoles as the boron- and germanium-containing building blocks, respectively, produced a mixture of several macrocyclic compounds. Single-crystal X-ray analysis of the 2:2 coupling product revealed a planar structure with a cavity inside the macrocycle. The optical properties of the macrocyclic products indicated rather small electronic interactions between the building units. However, intramolecular photoenergy transfer from the dithienogermole unit to the boron unit was clearly observed with respect to the fluorescence spectra.
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Affiliation(s)
- Yohei Adachi
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan
| | - Taishi Nabeya
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan
| | - Keigo Kawakami
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan
| | - Kosuke Yamaji
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University-Newark, Newark, NJ, 07102, USA
| | - Joji Ohshita
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan.,Division of Materials Model-Based Research, Digital Monozukuri (Manufacturing) Education and Research Center, Hiroshima University, Higashi-Hiroshima, 739-0046, Japan
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10
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Igarashi A, Ueda Y, Katoh R, Imoto H, Naka K. Highly selective mono‐functionalization of open‐cage silsesquioxane toward film‐formable homopolymer. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Amato Igarashi
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Kyoto Japan
| | - Yukiho Ueda
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Kyoto Japan
| | - Ryoichi Katoh
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Kyoto Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Kyoto Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Kyoto Japan
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11
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Ueda Y, Imoto H, Okada A, Xu H, Yamane H, Naka K. Hybrid polyurethanes composed of isobutyl-substituted open-cage silsesquioxane in the main chains: synthesis, properties and surface segregation in a polymer matrix. Polym Chem 2021. [DOI: 10.1039/d1py00329a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The resulting polyurethanes exhibited excellent optical transparency and surface hydrophobicity and acted as effective surface modifiers in poly(methyl methacrylate) (PMMA) by surface segregation.
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Affiliation(s)
- Yukiho Ueda
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Arifumi Okada
- Faculty of Materials Science and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Huaizhong Xu
- Faculty of Fiber Science and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Hideki Yamane
- Faculty of Fiber Science and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto
- Japan
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12
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Ishida A, Fujii S, Sumida A, Kamitani T, Minami S, Urayama K, Imoto H, Naka K. Supramolecular organogel formation behaviors of beads-on-string shaped poly(azomethine)s dependent on POSS structures in the main chains. Polym Chem 2021. [DOI: 10.1039/d1py00346a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Organogel formation was observed for isobutyl-substituted cage octasilsesquioxane (T8) in the main-chain type polyazomethines, while precipitates instead of gel formation were observed for phenyl-substituted double-decker-shaped silsesquioxanes (DDSQ)-poly(azomethine)s.
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Affiliation(s)
- Ayano Ishida
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Shunichi Fujii
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Akifumi Sumida
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Tasuku Kamitani
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Saori Minami
- Faculty of Material Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Kenji Urayama
- Faculty of Material Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
- Materials Innovation Lab
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13
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Li L, Imoto H, Naka K. Soluble network polymers based on
trifluoropropyl‐substituted open‐cage
silsesquioxane: Synthesis, properties, and application for surface modifiers. J Appl Polym Sci 2020. [DOI: 10.1002/app.50167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Lina Li
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology Kyoto Institute of Technology Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Kyoto Japan
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14
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Characteristics of Thermosetting Polymer Nanocomposites: Siloxane-Imide-Containing Benzoxazine with Silsesquioxane Epoxy Resins. Polymers (Basel) 2020; 12:polym12112510. [PMID: 33126641 PMCID: PMC7692388 DOI: 10.3390/polym12112510] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/22/2020] [Accepted: 10/26/2020] [Indexed: 11/24/2022] Open
Abstract
A series of innovative thermosetting polymer nanocomposites comprising of polysiloxane-imide-containing benzoxazine (PSiBZ) as the matrix and double-decker silsesquioxane (DDSQ) epoxy or polyhedral oligomeric silsesquioxane (POSS) epoxy were prepared for improving thermosetting performance. Thermomechanical and dynamic mechanical characterizations indicated that both DDSQ and POSS could effectively lower the coefficient of thermal expansion by up to approximately 34% and considerably increase the storage modulus (up to 183%). Therefore, DDSQ and POSS are promising materials for low-stress encapsulation for electronic packaging applications.
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15
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Mituła K, Duszczak J, Rzonsowska M, Żak P, Dudziec B. Polysiloxanes Grafted with Mono(alkenyl)Silsesquioxanes-Particular Concept for Their Connection. MATERIALS 2020; 13:ma13214784. [PMID: 33114766 PMCID: PMC7662624 DOI: 10.3390/ma13214784] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 11/20/2022]
Abstract
Herein, a facile and efficient synthetic route to unique hybrid materials containing polysiloxanes and mono(alkyl)silsesquioxanes as their pendant modifiers (T8@PS) was demonstrated. The idea of this work was to apply the hydrosilylation reaction as a tool for the efficient and selective attachment of mono(alkenyl)substituted silsesquioxanes (differing in the alkenyl chain length, from -vinyl to -dec-9-enyl and types of inert groups iBu, Ph at the inorganic core) onto two polysiloxanes containing various amount of Si-H units. The synthetic protocol, determined and confirmed by FT-IR in situ and NMR analyses, was optimized to ensure complete Si-H consumption along with the avoidance of side-products. A series of 20 new compounds with high yields and complete β-addition selectivity was obtained and characterized by spectroscopic methods.
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Affiliation(s)
- Katarzyna Mituła
- Faculty of Chemistry, Department of Organometallic Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (J.D.); (M.R.); (P.Ż.)
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
- Correspondence: (K.M.); (B.D.); Tel.: +48-61-829-1878 (B.D.)
| | - Julia Duszczak
- Faculty of Chemistry, Department of Organometallic Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (J.D.); (M.R.); (P.Ż.)
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Monika Rzonsowska
- Faculty of Chemistry, Department of Organometallic Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (J.D.); (M.R.); (P.Ż.)
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
| | - Patrycja Żak
- Faculty of Chemistry, Department of Organometallic Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (J.D.); (M.R.); (P.Ż.)
| | - Beata Dudziec
- Faculty of Chemistry, Department of Organometallic Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (J.D.); (M.R.); (P.Ż.)
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland
- Correspondence: (K.M.); (B.D.); Tel.: +48-61-829-1878 (B.D.)
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16
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Li Z, Hu J, Yang L, Zhang X, Liu X, Wang Z, Li Y. Integrated POSS-dendrimer nanohybrid materials: current status and future perspective. NANOSCALE 2020; 12:11395-11415. [PMID: 32432308 DOI: 10.1039/d0nr02394a] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Polyhedral oligomeric silsesquioxane (POSS)-dendrimer hybrid materials have attracted great interest in the past ten years. The integration of inorganic POSS and organic dendrimer blocks in a single-phase material offers numerous possibilities to access desirable mechanical, optical, and biomedical properties for various applications. In this review article, we describe several kinds of POSS-dendrimer hybrid materials (POSS as the core, surface functionality, repeating unit of dendrimers and the POSS-dendron conjugates) with an emphasis on their synthetic strategies, tunable macroscopic properties, and potential applications. Moreover, the current trends, challenges and future directions of POSS-dendrimer hybrid materials are elaborated.
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Affiliation(s)
- Zhan Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Junfei Hu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Lei Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Xueqian Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Xianhu Liu
- National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Zhao Wang
- Pritzker School of Engineering, University of Chicago, Chicago, IL 60637, USA.
| | - Yiwen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
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17
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Sato Y, Imoto H, Naka K. Soluble and film‐formable homopolymer tethering side‐opened cage silsesquioxane pendants. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuri Sato
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology, Kyoto Institute of Technology Kyoto Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology, Kyoto Institute of Technology Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Kyoto Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology, Kyoto Institute of Technology Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Kyoto Japan
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18
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Ma Q, Liu X, Zhang Y, Chen L, Dang X, Ai Y, Chen H. Fe
3
O
4
nanoparticles coated with polyhedral oligomeric silsesquioxanes and β‐cyclodextrin for magnetic solid‐phase extraction of carbaryl and carbofuran. J Sep Sci 2020; 43:1514-1522. [DOI: 10.1002/jssc.201900896] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/09/2020] [Accepted: 01/09/2020] [Indexed: 01/17/2023]
Affiliation(s)
- Qiong Ma
- Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical EngineeringHubei University Wuhan P. R. China
| | - Xiaolan Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical EngineeringHubei University Wuhan P. R. China
| | - Yingying Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical EngineeringHubei University Wuhan P. R. China
| | - Ling Chen
- Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical EngineeringHubei University Wuhan P. R. China
| | - Xueping Dang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical EngineeringHubei University Wuhan P. R. China
| | - Youhong Ai
- Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical EngineeringHubei University Wuhan P. R. China
| | - Huaixia Chen
- Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical EngineeringHubei University Wuhan P. R. China
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19
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Imoto H, Ueda Y, Sato Y, Nakamura M, Mitamura K, Watase S, Naka K. Corner‐ and Side‐Opened Cage Silsesquioxanes: Structural Effects on the Materials Properties. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901182] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Yukiho Ueda
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Yuri Sato
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
| | - Masashi Nakamura
- Morinomiya Center Osaka Research Institute of Industrial Science and Technology Morinomiya Center 1‐6–50 Morinomiya, Joto‐ku 536‐8553 Osaka Japan
| | - Koji Mitamura
- Morinomiya Center Osaka Research Institute of Industrial Science and Technology Morinomiya Center 1‐6–50 Morinomiya, Joto‐ku 536‐8553 Osaka Japan
| | - Seiji Watase
- Morinomiya Center Osaka Research Institute of Industrial Science and Technology Morinomiya Center 1‐6–50 Morinomiya, Joto‐ku 536‐8553 Osaka Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
- Materials Innovation Lab Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku 606‐8585 Kyoto Japan
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20
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Imoto H, Ishida A, Hashimoto M, Mizoue Y, Yusa SI, Naka K. Soluble Network Polymers Based on Trifunctional Open-cage Silsesquioxanes. CHEM LETT 2019. [DOI: 10.1246/cl.190536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Ayano Ishida
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Mari Hashimoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yoko Mizoue
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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21
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Wada S, Imoto H, Naka K. Palladium-Catalyzed Arylation of Open-Cage Silsesquioxanes toward Thermally Stable and Highly Dispersible Nanofillers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Satoshi Wada
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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22
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Imoto H, Wada S, Yumura T, Naka K. Transition‐Metal‐Catalyzed Direct Arylation of Caged Silsesquioxanes: Substrate Scope and Mechanistic Study. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku Kyoto 606‐8585 Japan
| | - Satoshi Wada
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku Kyoto 606‐8585 Japan
| | - Takashi Yumura
- Faculty of Material Science and Technology Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku Kyoto 606‐8585 Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering Graduate School of Science and Technology Kyoto Institute of Technology Goshokaido‐cho, Matsugasaki, Sakyo‐ku Kyoto 606‐8585 Japan
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23
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Żak P, Bołt M, Dudziec B, Kubicki M. Synthesis of (E)-1,4-disilsesquioxylsubstituted but-1-en-3-ynes via platinum-catalyzed dimerization of ethynylsiloxysilsesquioxanes. Dalton Trans 2019; 48:2657-2663. [PMID: 30702739 DOI: 10.1039/c8dt05142a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A new platinum complex bearing bulky N-heterocyclic carbene ligand of the general formula [Pt(IPr*Ph)(dvtms)] (where IPr*Ph = 1,3-bis{2,4,6-tris(diphenylmethyl)phenyl}imidazol-2-ylidene, dvtms = divinyltetramethyldisiloxane) exhibits a high catalytic activity towards E-selective dimerization of ethynyl substituted siloxysilsesquioxanes. This process leads to a novel class of functionalized silsesquioxane derivatives, resembling their dumbbell-shaped silsesquioxane analogues.
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Affiliation(s)
- Patrycja Żak
- Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89B, 61-614 Poznan, Poland.
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24
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Yuasa S, Sato Y, Imoto H, Naka K. Thermal Properties of Open-Cage Silsesquioxanes: The Effect of Substituents at the Corners and Opening Moieties. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180257] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Sota Yuasa
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yuri Sato
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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25
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Katoh R, Imoto H, Naka K. One-pot strategy for synthesis of open-cage silsesquioxane monomers. Polym Chem 2019. [DOI: 10.1039/c9py00036d] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel synthetic strategy to access POSS monomers has been proposed; one reaction site of an open-cage POSS was capped, and the remaining two silanol groups were functionalized for polymerization. Importantly, the monomer can be obtained by one-pot synthesis without any troublesome isolation process.
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Affiliation(s)
- Ryoichi Katoh
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
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26
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Morimoto S, Imoto H, Kanaori K, Naka K. Effect of Mono-Substituents in Heptaisobutyl-Substituted Polyhedral Octasilsesquioxanes on Orientationally Disordered Phase Transition. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180156] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Satoshi Morimoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kenji Kanaori
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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27
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Stefanowska K, Franczyk A, Szyling J, Pyziak M, Pawluć P, Walkowiak J. Selective Hydrosilylation of Alkynes with Octaspherosilicate (HSiMe 2 O) 8 Si 8 O 12. Chem Asian J 2018; 13:2101-2108. [PMID: 29874414 DOI: 10.1002/asia.201800726] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/02/2018] [Indexed: 01/09/2023]
Abstract
Comprehensive studies on platinum-catalyzed hydrosilylation of a wide range of terminal and internal alkynes with spherosilicate (HSiMe2 O)8 Si8 O12 (1 a) were performed. The influence of the reaction parameters and the types of reagents and catalysts on the efficiency of the process, which enabled the creation of a versatile and selective method to synthesize olefin octafunctionalized octaspherosilicates, was studied in detail. Within this work, twenty novel 1,2-(E)-disubstituted and 1,1,2-(E)-trisubstituted alkenyl-octaspherosilicates (3 a-m, 6 n-t) were selectively obtained with high yields, and fully characterized (1 H, 13 C, 29 Si NMR, FTIR, MALDI TOF or TOF MS ES+ analysis). Moreover, the molecular structure of the compound (Me3 Si(H)C=C(H)SiMe2 O)8 Si8 O12 (3 a) was determined by X-ray crystallography for the first time. The developed procedures are the first that allow selective hydrosilylation of terminal silyl, germyl, aryl, and alkyl alkynes with 1 a, as well as the direct introduction of sixteen functional groups into the 1 a structure by the hydrosilylation of internal alkynes. This method constituted a powerful tool for the synthesis of hyperbranched compounds with a Si-O based cubic core. The resulting products, owing to their unique structure and physicochemical properties, are considered novel, multifunctional, hybrid, and nanometric building blocks, intended for the synthesis of star-shaped molecules or macromolecules, as well as nanofillers and polymer modifiers. In the presented syntheses, commercially available reagents and catalysts were used, so these methods can be easily repeated, rapidly scaled up, and widely applied.
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Affiliation(s)
- Kinga Stefanowska
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89c, 61-614, Poznan, Poland
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, 61-614, Poznan, Poland
| | - Adrian Franczyk
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89c, 61-614, Poznan, Poland
| | - Jakub Szyling
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89c, 61-614, Poznan, Poland
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, 61-614, Poznan, Poland
| | - Mikołaj Pyziak
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, 61-614, Poznan, Poland
| | - Piotr Pawluć
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89c, 61-614, Poznan, Poland
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, 61-614, Poznan, Poland
| | - Jędrzej Walkowiak
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89c, 61-614, Poznan, Poland
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28
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Imoto H. Development of macromolecules and supramolecules based on silicon and arsenic chemistries. Polym J 2018. [DOI: 10.1038/s41428-018-0068-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Liu N, Yu J, Meng Y, Liu Y. Hyperbranched Polysiloxanes Based on Polyhedral Oligomeric Silsesquioxane Cages with Ultra-High Molecular Weight and Structural Tuneability. Polymers (Basel) 2018; 10:polym10050496. [PMID: 30966530 PMCID: PMC6415398 DOI: 10.3390/polym10050496] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 01/12/2023] Open
Abstract
Hyperbranched siloxane-based polymers with ultra-high molecular weight were synthesized by the Piers–Rubinsztajn reaction between octakis(dimethylsiloxy) octasilsesquioxane with different dialkoxysilanes, using tris(pentafluorophenyl) borane as the catalyst. The origin of the high molecular weight is explained by the high reactivity of the catalyst and strain energy of isolated small molecule in which all eight silane groups close into rings on the sides of a single cubic cage. The structural tuneability was further demonstrated by use of methyl(3-chloropropyl)diethoxysilane, which generates a polymer with similar ultra-high molecular weight. Introduction of phosphonate groups through the chloropropyl sites later leads to functionalized polymers which can encapsulate various transition metal nanoparticles.
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Affiliation(s)
- Ning Liu
- MOE Key Laboratory of Laser Life Science & Laboratory of Photonic Chinese Medicine, College of Biophotonics, South China Normal University, Guangdong 510631, China.
| | - Jianyi Yu
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China.
| | - Yaoyong Meng
- MOE Key Laboratory of Laser Life Science & Laboratory of Photonic Chinese Medicine, College of Biophotonics, South China Normal University, Guangdong 510631, China.
| | - Yuzhou Liu
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China.
- School of Chemistry, Beihang University, Beijing 100191, China.
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30
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Morimoto S, Imoto H, Naka K. POSS solid solutions exhibiting orientationally disordered phase transitions. Chem Commun (Camb) 2018; 53:9273-9276. [PMID: 28771257 DOI: 10.1039/c7cc04443g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Examples of solid solution behavior for molecular crystals are limited, due to difficulty in designing a crystalline mixture of different molecules. Here, we found that a mixture of two different monofunctionalized heptaisobutyl-substituted octasilsesquioxanes formed solid solutions showing a single phase-transition temperature, which exhibited orientationally disordered (OD) phases.
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Affiliation(s)
- Satoshi Morimoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
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31
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Self-association behavior of amphiphilic molecules based on incompletely condensed cage silsesquioxanes and poly(ethylene glycol)s. Polym J 2018. [DOI: 10.1038/s41428-017-0021-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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32
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Walczak M, Franczyk A, Marciniec B. Synthesis of Monofunctionalized Silsesquioxanes (RSiMe 2 O)(iBu) 7 Si 8 O 12 via Alkene Hydrosilylation. Chem Asian J 2018; 13:181-186. [PMID: 29194982 DOI: 10.1002/asia.201701569] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Indexed: 11/07/2022]
Abstract
The research presented in this work comprehensively describes hydrosilylation of a wide spectrum of alkenes which contain one or more reactive groups with (HSiMe2 O)(iBu)7 Si8 O12 , in the presence of different types of catalysts. Special attention is paid to the influence of alkene, catalyst, and reaction conditions on process effectiveness and selectivity by the precise monitoring of the experiments with in situ FTIR and NMR spectroscopies. More than twenty silsesquioxanes bearing reactive groups (OH, Br, NR2 , CO, COOR, NCO, epoxy, SiR3 ) commonly used in organic and polymer chemistry, were obtained, isolated and characterized by 1 H, 13 C, 29 Si NMR and MALDI TOF. Importantly, in the presented syntheses, commercially available reagents and catalysts were used, meaning that the presented methods could be easily repeated, rapidly scaled up, and widely applied.
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Affiliation(s)
- Marcin Walczak
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89B, 61-614, Poznan, Poland.,Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89C, 61-614, Poznan, Poland
| | - Adrian Franczyk
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89C, 61-614, Poznan, Poland
| | - Bogdan Marciniec
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89B, 61-614, Poznan, Poland.,Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Umultowska 89C, 61-614, Poznan, Poland
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33
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Imoto H, Katoh R, Naka K. Open-cage silsesquioxane necklace polymers having closed-cage silsesquioxane pendants. Polym Chem 2018. [DOI: 10.1039/c8py00758f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A novel POSS monomer design has been proposed; a closed-cage POSS was tethered to an open-cage POSS, and the remaining two functional groups were employed for polymerization. The thermal and optical properties of the obtained main-chain type POSS polymers can be widely tuned by the substituents at the corners of the POSSs.
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Affiliation(s)
- Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Ryoichi Katoh
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
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34
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Noda H, Tanaka K, Tanabe M, Osakada K. Cyclic Platina(borasiloxane)s and Platina(siloxane)s and Their Chemical Properties. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00690] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroki Noda
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kimiya Tanaka
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Makoto Tanabe
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kohtaro Osakada
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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35
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Yuasa S, Sato Y, Imoto H, Naka K. Fabrication of composite films with poly(methyl methacrylate) and incompletely condensed cage-silsesquioxane fillers. J Appl Polym Sci 2017. [DOI: 10.1002/app.46033] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Sota Yuasa
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology; Kyoto Institute of Technology; Sakyo-ku Kyoto 606-8585 Japan
| | - Yuri Sato
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology; Kyoto Institute of Technology; Sakyo-ku Kyoto 606-8585 Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology; Kyoto Institute of Technology; Sakyo-ku Kyoto 606-8585 Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology; Kyoto Institute of Technology; Sakyo-ku Kyoto 606-8585 Japan
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36
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Tran-Cong-Miyata Q. In Focus section: Polymer Research at Kyoto Institute of Technology (KIT), Japan. POLYM INT 2017. [DOI: 10.1002/pi.5248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qui Tran-Cong-Miyata
- Department of Macromolecular Science and Engineering; Kyoto Institute of Technology; Matsugasaki Kyoto 606-858 JAPAN
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37
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Imoto H, Wada S, Naka K. Rh-catalyzed direct arylation of a polyhedral oligomeric silsesquioxane. Dalton Trans 2017; 46:6168-6171. [DOI: 10.1039/c7dt01106g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conjugation of a polyhedral oligomeric silsesquioxane (POSS) with the π-electrons of functional organic units has recently attracted much attention. This is the first example of catalytic direct arylation of a POSS.
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Affiliation(s)
- Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Satoshi Wada
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
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