1
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Sonoda K, Tohnai N, Kaneko Y. Stereoselective synthesis of different cyclic tetrasiloxane isomers depending on the superacid catalyst employed. Dalton Trans 2024; 53:8709-8715. [PMID: 38700509 DOI: 10.1039/d4dt00062e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
In this study, we investigated the hydrolytic condensation of 3-aminopropyldiethoxymethylsilane over different superacid catalysts. We found that cyclic tetrasiloxanes with different stereostructures (Am-CyTS-NNf2 and Am-CyTS-NHf2) could be selectively prepared in high yields (>95%) depending on the superacid catalyst employed (bis(nonafluorobutanesulfonyl)imide or cyclohexafluoropropane-1,3-bis(sulfonyl)imide). The single-crystal X-ray structural analyses of compounds in which amino groups of Am-CyTS-NNf2 and Am-CyTS-NHf2 were protected by the tert-butoxycarbonyl group revealed the formation of all-cis and cis-trans-cis cyclic tetrasiloxanes, respectively.
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Affiliation(s)
- Kanako Sonoda
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan.
| | - Norimitsu Tohnai
- Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshiro Kaneko
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40, Korimoto, Kagoshima 890-0065, Japan.
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2
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Liu H, Zhou H, Chen X, Xu J. N-Heterocyclic Carbene-Catalyzed Desymmetrization of Siladials To Access Silicon-Stereogenic Organosilanes. J Org Chem 2022; 87:16127-16137. [DOI: 10.1021/acs.joc.2c02184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Hao Liu
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Hongwei Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Xingkuan Chen
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Department of Chemistry, Jinan University, Guangzhou 510632, P. R. China
| | - Jianfeng Xu
- Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
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3
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Thiolated Janus Silsesquioxane Tetrapod: New Precursors for Functional Materials. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227680. [PMID: 36431781 PMCID: PMC9696078 DOI: 10.3390/molecules27227680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/01/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022]
Abstract
Herein, we report synthetic strategies for the development of a bifunctional Janus T4 tetrapod (Janus ring), in which the orthogonal silsesquioxane and organic faces are independently functionalized. An all-cis T4 tetrasilanolate was functionalized to introduce thiol moieties on the silsesquioxane face and naphthyl groups on the organic face to introduce luminescent and self-organization properties. The stepwise synthesis conditions required to prepare such perfectly defined oligomers via a suite of well-defined intermediates and to avoid polymerization or reactions over all eight positions of the tetrapod are explored via 29Si, 13C and 1H NMR, FTIR and TOF-ESI mass spectroscopy. To the best of our knowledge, this is one of the few reports of Janus T4 tetrapods, with different functional groups located on both faces of the molecule, thus expanding the potential range of applications for these versatile precursors.
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4
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Goncharova IK, Kutumov SP, Novikov RA, Shiryaeva TY, Volodin AD, Korlyukov AA, Arzumanyan AV. The selective synthesis of di- and cyclosiloxanes bearing several hidden p-tolyl-functionalities. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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5
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Liu Y, Chaiprasert T, Ouali A, Unno M. Well-defined cyclic silanol derivatives. Dalton Trans 2022; 51:4227-4245. [PMID: 35191910 DOI: 10.1039/d1dt04270j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Cyclic silanol derivatives (CSDs), possessing siloxane rings consisting of T-unit silicon and oxygen atoms, are considered efficient precursors for the preparation of versatile well-defined building blocks of hybrid materials such as cyclic, cage- or ladder-type SQs. This review provides an outline of the main synthetic routes to numerous stereoregular CSDs with different sizes of siloxane rings since the first example of CSDs reported by Brown et al. in 1965. The typical reaction conditions and chemical shifts of 29Si NMR of all mentioned CSDs in this review are summarized in tables and schemes to recapitulate the state of the art. The synthesis of all-cis-cyclotetrasiloxanes (T4), the most investigated CSDs, and their functionalization by different organic reactions to access various all-cis-T4 with functional groups are methodically presented. Moreover, the potential of CSDs in multiple application fields is discussed to show the possible research directions of this family of compounds in the future.
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Affiliation(s)
- Yujia Liu
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan.
| | - Thanawat Chaiprasert
- Department of Chemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road Pathum Wan Wang Mai, Bangkok 10330, Thailand
| | - Armelle Ouali
- ICGM, Univ Montpellier, CNRS, ENSCM, 1919 route de Mende, Montpellier 34293 Cedex 5, France
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan.
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6
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Shimojima A, Kuroda K. Alkoxy- and Silanol-Functionalized Cage-Type Oligosiloxanes as Molecular Building Blocks to Construct Nanoporous Materials. Molecules 2020; 25:molecules25030524. [PMID: 31991787 PMCID: PMC7038179 DOI: 10.3390/molecules25030524] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 01/22/2020] [Accepted: 01/23/2020] [Indexed: 01/21/2023] Open
Abstract
Siloxane-based materials have a wide range of applications. Cage-type oligosiloxanes have attracted significant attention as molecular building blocks to construct novel siloxane-based nanoporous materials with promising applications such as in catalysis and adsorption. This paper reviews recent progress in the preparation of siloxane-based nanoporous materials using alkoxy- and silanol-functionalized cage siloxanes. The arrangement of cage siloxanes units is controlled by various methods, including amphiphilic self-assembly, hydrogen bonding of silanol groups, and regioselective functionalization, toward the preparation of ordered nanoporous siloxane-based materials.
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Affiliation(s)
- Atsushi Shimojima
- Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
- Correspondence: (A.S.); (K.K.)
| | - Kazuyuki Kuroda
- Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
- Correspondence: (A.S.); (K.K.)
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7
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Rey N, Carenco S, Carcel C, Ouali A, Portehault D, Wong Chi Man M, Sanchez C. Dumbbell‐Shaped T
8
‐POSS with Functional Organic Linkers. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nadège Rey
- ICGM, CNRS, ENSCM Univ. Montpellier Montpellier France
- Collège de France PSL University Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
| | - Sophie Carenco
- Collège de France PSL University Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
| | - Carole Carcel
- ICGM, CNRS, ENSCM Univ. Montpellier Montpellier France
| | - Armelle Ouali
- ICGM, CNRS, ENSCM Univ. Montpellier Montpellier France
| | - David Portehault
- Collège de France PSL University Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
| | | | - Clément Sanchez
- Collège de France PSL University Sorbonne Université, CNRS 4 place Jussieu 75005 Paris France
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8
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Li Y, Cui C. Cesium Carbonate-Catalyzed Oxidation of Substituted Phenylsilanes for the Efficient Synthesis of Polyhedral Oligomeric Silsesquioxanes. Inorg Chem 2018; 57:13477-13485. [DOI: 10.1021/acs.inorgchem.8b02107] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yuefeng Li
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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9
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Vysochinskaya YS, Anisimov AA, Milenin SA, Korlyukov AA, Dolgushin FM, Kononova EG, Peregudov AS, Buzin MI, Shchegolikhina OI, Muzafarov AM. New all-cis-tetra(p-tolyl)cyclotetrasiloxanetetraol and its functionalization. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.07.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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11
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Endo H, Takeda N, Unno M. Stereoisomerization of Cyclic Silanols. Chem Asian J 2017; 12:1224-1233. [PMID: 28224762 DOI: 10.1002/asia.201700125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Indexed: 11/11/2022]
Abstract
Stereoisomerization of readily available all-cis-1,3,5,7-tetrahydroxy-1,3,5,7-tetraisobutylcyclotetrasiloxane (1 a) was carried out under acidic conditions to afford cis-trans-cis (1 b), all-trans (1 c), and cis-cis-trans (1 d) isomers. The compounds in the reaction mixture could be easily separated into 1 a and a mixture of 1 b, 1 c, and 1 d by the treatment with chloroform. Compounds 1 b, 1 c, and 1 d were further separated and isolated, and each structure was identified. The experimental results indicated that the most plausible mechanism is a substitution reaction at the silicon center via a pentacoordinate intermediate without a cyclic siloxane bond cleavage reaction. The obtained isomer 1 a or 1 b further reacted with dichlorodiphenylsilane in the presence of triethylamine to give syn-type laddersiloxane (2 a) or anti-type laddersiloxane (2 b), respectively.
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Affiliation(s)
- Hisayuki Endo
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, 376-8515, Japan
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, 376-8515, Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, 376-8515, Japan
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12
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Oguri N, Egawa Y, Kawakami Y, Kobuna C, Takeda N, Unno M. Unusual Reactions of Cyclic Fluorosiloxanes. ChemistrySelect 2017. [DOI: 10.1002/slct.201700306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Naoki Oguri
- Department of Chemistry and Chemical Biology; Graduate School of Science and Technology, Gunma University
| | - Yasunobu Egawa
- Department of Chemistry and Chemical Biology; Graduate School of Science and Technology, Gunma University
| | - Yoshiteru Kawakami
- Department of Chemistry and Chemical Biology; Graduate School of Science and Technology, Gunma University
| | - Chika Kobuna
- Department of Chemistry and Chemical Biology; Graduate School of Science and Technology, Gunma University
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical Biology; Graduate School of Science and Technology, Gunma University
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology; Graduate School of Science and Technology, Gunma University
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13
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Sato T, Kawakami Y, Tanaka K, Suzuno K, Takaya Y, Kabe Y. Silanol-modified Calix[4]arene Conformers: Syntheses, Structures, and Properties. CHEM LETT 2017. [DOI: 10.1246/cl.160981] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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14
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Nowacka M, Fischer C, Kowalewska A, Hebda M, Hodor K. Thermally induced phenomena leading to degradation of poly(silsesquioxane) materials. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.11.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Oguri N, Egawa Y, Takeda N, Unno M. Janus-Cube Octasilsesquioxane: Facile Synthesis and Structure Elucidation. Angew Chem Int Ed Engl 2016; 55:9336-9. [PMID: 27225052 DOI: 10.1002/anie.201602413] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Indexed: 11/07/2022]
Abstract
A perfect "Janus-cube" octasilsesquioxane, a nanometer-scale Janus particle with two different types of substituents, was synthesized through the cross-coupling of a "half-cube" cyclic sodium siloxanolate with another half-cube cyclic fluorosiloxane. The structure was confirmed by X-ray crystallography to be a Janus cube. The overall synthesis is simple and does not require drastic separation methods compared with previous methods. The synthesis of the Janus cube demonstrates a novel siloxane bond-forming reaction involving the coupling a silanol salt and fluorosilane. The reaction is mild, does not result in acid generation, and could be applied to the construction of other novel siloxane compounds.
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Affiliation(s)
- Naoki Oguri
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, 376-8515, Gunma, Japan
| | - Yasunobu Egawa
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, 376-8515, Gunma, Japan
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, 376-8515, Gunma, Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, 376-8515, Gunma, Japan.
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16
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Oguri N, Egawa Y, Takeda N, Unno M. Janus‐Cube Octasilsesquioxane: Facile Synthesis and Structure Elucidation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602413] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoki Oguri
- Department of Chemistry and Chemical BiologyGraduate School of Science and TechnologyGunma University, Kiryu 376-8515 Gunma Japan
| | - Yasunobu Egawa
- Department of Chemistry and Chemical BiologyGraduate School of Science and TechnologyGunma University, Kiryu 376-8515 Gunma Japan
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical BiologyGraduate School of Science and TechnologyGunma University, Kiryu 376-8515 Gunma Japan
| | - Masafumi Unno
- Department of Chemistry and Chemical BiologyGraduate School of Science and TechnologyGunma University, Kiryu 376-8515 Gunma Japan
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17
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Deshmukh MS, Vijayakanth T, Boomishankar R. Stereochemically Distinct Cyclotetrasiloxanes Containing 3-Pyridyl Moieties and Their Functional Coordination Polymers. Inorg Chem 2016; 55:3098-104. [PMID: 26958986 DOI: 10.1021/acs.inorgchem.6b00001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthesis of new cyclotetrasiloxane scaffolds containing peripherally functionalized 3-pyridyl moieties, [MeSiO(CH═CH(3)Py)]4 (L(1)) and [MeSiO(CH2CH2(3)Py)]4 (L(2)), and their reactivity studies with certain d(10) metal ions are reported. The ligand L(1) is obtained by the Heck-coupling reaction of tetramethyl tetravinyl tetrasiloxane (D4(vi)) and 3-bromopyridine in the presence of the Pd(0) catalysts. The as-synthesized ligand L(1) shows the presence of three stereoisomers, cis-trans-cis (L(1A)), cis-cis-trans (L(1B)), and all-trans (L(1C)), which are quantitatively separated by column chromatography. Subsequent reduction of L(1A), L(1B), and L(1C) with triethylsilane in the presence of catalytic amounts of Pd/C leads to the formation of the ligands L(2A), L(2B), and L(2C) with retention of stereochemistry due to the precursor moieties. Treatment of ZnI2 with L(1A) gives a one-dimensional coordination framework [(L(1A))4(ZnI2)2]∞, 1. These 1D-chains are further connected by π-π stacking interactions between the pyridyl groups of the adjacent chains leading to the formation of a three-dimensional network with the topology of a PtS net. The reaction of silver nitrate with ligand L(1B) gives a chain like one-dimensional cationic coordination polymer {[(L(1B))4Ag2]·2NO3·H2O·CH3OH }∞, 2, consisting of two different kinds of 32-membered macrocycles. Treatment of the all-trans ligand L(2C) with copper(I) iodide salt results in the formation of a cubane-type Cu4I4 cluster MOF [(L(2C))4Cu4I4]∞, 3, in a two-dimensional 4-connected uninodal sql/Shubnikov tetragonal plane net topology represented by the Schläfli symbol {4(4).6(2)}. This MOF displays a thermochromic luminescence behavior due to Cu4I4 clusters showing an orange emission at 298 K and a blue emission at 77 K.
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Affiliation(s)
- Mahesh S Deshmukh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Pune, Dr. Homi Bhabha Road, Pune 411008, India
| | - Thangavel Vijayakanth
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Pune, Dr. Homi Bhabha Road, Pune 411008, India
| | - Ramamoorthy Boomishankar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Pune, Dr. Homi Bhabha Road, Pune 411008, India
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18
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Murakami S, Egawa Y, Kuramochi C, Takeda N, Unno M. Cyclic Silanols with Long Alkyl Chains. CHEM LETT 2016. [DOI: 10.1246/cl.151143] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shinji Murakami
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University
| | - Yasunobu Egawa
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University
| | - Chika Kuramochi
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Faculty of Science and Technology, Gunma University
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19
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Nowacka M, Kowalewska A, Makowski T. Structural studies on ladder phenylsilsesquioxane oligomers formed by polycondensation of cyclotetrasiloxanetetraols. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Sakuragi A, Igarashi Y, Kajihara K, Kanamura K. Synthesis of silanol-rich long-life polysilsesquioxane liquids by cosolvent-free hydrolytic polycondensation of organotrimethoxysilanes followed by aging. Dalton Trans 2016; 45:3151-7. [DOI: 10.1039/c5dt04611d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silanol-rich polysilsesquioxane liquids with long-term viscosity stability are formed in a facile manner from organotrimethoxysilane–water binary systems via aging.
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Affiliation(s)
- Arata Sakuragi
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Yuta Igarashi
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Koichi Kajihara
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Kiyoshi Kanamura
- Department of Applied Chemistry
- Graduate School of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
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21
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22
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Affiliation(s)
- Naoki Oguri
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University
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23
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Ahmad SU, Szilvási T, Irran E, Inoue S. An NHC-Stabilized Silicon Analogue of Acylium Ion: Synthesis, Structure, Reactivity, and Theoretical Studies. J Am Chem Soc 2015; 137:5828-36. [DOI: 10.1021/jacs.5b01853] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Syed Usman Ahmad
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, Sekr. C2, D-10623 Berlin, Germany
| | - Tibor Szilvási
- Department
of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, 1111 Budapest, Hungary
| | - Elisabeth Irran
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, Sekr. C2, D-10623 Berlin, Germany
| | - Shigeyoshi Inoue
- Institut
für Chemie, Technische Universität Berlin, Straße des
17. Juni 135, Sekr. C2, D-10623 Berlin, Germany
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24
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Kinoshita S, Watase S, Matsukawa K, Kaneko Y. Selective Synthesis of cis–trans–cis Cyclic Tetrasiloxanes and the Formation of Their Two-Dimensional Layered Aggregates. J Am Chem Soc 2015; 137:5061-5. [DOI: 10.1021/jacs.5b00319] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shota Kinoshita
- Graduate
School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | - Seiji Watase
- Electronic
Materials Research Division, Osaka Municipal Technical Research Institute, Osaka 536-8553, Japan
| | - Kimihiro Matsukawa
- Electronic
Materials Research Division, Osaka Municipal Technical Research Institute, Osaka 536-8553, Japan
| | - Yoshiro Kaneko
- Graduate
School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
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25
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Fukawa M, Sato T, Kabe Y. A hydrogen bonded molecular capsule versus a 3D network of tripodal organopolysilanols. Chem Commun (Camb) 2015; 51:14746-9. [DOI: 10.1039/c5cc04515k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
1,3,5-Triethylbenzene based tripodal trisilanols were synthesized. X-ray, NMR and ESI-mass spectra disclosed the first example of an organotrisilanol molecular capsule based on a 1,3,5-triethylbenzene scaffold which showed encapsulation of H2O or halogen anions in both the crystalline and solution states.
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Affiliation(s)
- Marina Fukawa
- Department of Chemistry
- Faculty of Science
- Kanagawa University 2946
- Tsuchiya Hiratsuka 259-1293
- Japan
| | - Takayuki Sato
- Department of Chemistry
- Faculty of Science
- Kanagawa University 2946
- Tsuchiya Hiratsuka 259-1293
- Japan
| | - Yoshio Kabe
- Department of Chemistry
- Faculty of Science
- Kanagawa University 2946
- Tsuchiya Hiratsuka 259-1293
- Japan
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Unno M, Endo H, Takeda N. Synthesis and Structures of Extended Cyclic Siloxanes. HETEROATOM CHEMISTRY 2014. [DOI: 10.1002/hc.21198] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Masafumi Unno
- Department of Chemistry and Chemical Biology and International Education and Research Center for Silicon Science; Faculty of Science and Technology, Gunma University; Kiryu Gunma 376-8515 Japan
| | - Hisayuki Endo
- Department of Chemistry and Chemical Biology and International Education and Research Center for Silicon Science; Faculty of Science and Technology, Gunma University; Kiryu Gunma 376-8515 Japan
| | - Nobuhiro Takeda
- Department of Chemistry and Chemical Biology and International Education and Research Center for Silicon Science; Faculty of Science and Technology, Gunma University; Kiryu Gunma 376-8515 Japan
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27
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Yoshikawa M, Wakabayashi R, Tamai M, Kuroda K. Synthesis of a multifunctional alkoxysiloxane oligomer. NEW J CHEM 2014. [DOI: 10.1039/c4nj00204k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The siloxane bonds of oligomer 1 were not cleaved by hydrolysis, indicating the suitability of 1 for controlled hybrid preparation.
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Affiliation(s)
- Masashi Yoshikawa
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo, Japan
| | - Ryutaro Wakabayashi
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo, Japan
- Kagami Memorial Research Institute for Materials Science and Technology
| | - Misa Tamai
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo, Japan
- Kagami Memorial Research Institute for Materials Science and Technology
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28
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Unno M, Suto A, Matsumoto T. Laddersiloxanes — silsesquioxanes with defined ladder structure. RUSSIAN CHEMICAL REVIEWS 2013. [DOI: 10.1070/rc2013v082n04abeh004360] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Panisch R, Bassindale AR, Korlyukov AA, Pitak MB, Coles SJ, Taylor PG. Selective Derivatization and Characterization of Bifunctional “Janus-Type” Cyclotetrasiloxanes. Organometallics 2013. [DOI: 10.1021/om301158w] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robin Panisch
- The Open University, Walton Hall, Milton Keynes, MK7 6AA, U.K
| | | | - Alexander A. Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, 119991, Moscow, Russia
| | - Mateusz B. Pitak
- UK National Crystallography Service,
School of Chemistry, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, U.K
| | - Simon J. Coles
- UK National Crystallography Service,
School of Chemistry, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, U.K
| | - Peter G. Taylor
- The Open University, Walton Hall, Milton Keynes, MK7 6AA, U.K
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Shankar R, Chaudhary M, Molloy KC, Kociok-Köhn G. New cyclotetrasiloxanes bearing sila-alkyl substituted side chains and their applications as templates for gold nanowires. Dalton Trans 2013; 42:7768-74. [DOI: 10.1039/c3dt50284h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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31
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Lee HS, Choi SS, Baek KY, Hong SM, Lee EC, Lee JC, Hwang SS. Synthesis and structure characterization of ladder-like polymethylsilsesquioxane (PMSQ) by isolation of stereoisomer. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.03.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Nonacyclic Ladder Silsesquioxanes and Spectral Features of Ladder Polysilsesquioxanes. INT J POLYM SCI 2012. [DOI: 10.1155/2012/723892] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Laddersiloxanes, that is, ladder silsesquioxanes with defined structures, could be obtained by stepwise synthesis starting from cyclic silanols. These compounds were shown to have high thermal stability. As an extension of the previous work, the first nonacyclic ladder silsesquioxanes were synthesized by the reaction of bicyclic silanol with tricyclic tetrachloride, which were obtained from cyclic silanols. The structure was confirmed by spectral measurements, and the spectral features of a series of ladder polysilsesquioxanes with determined structures were analyzed.
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33
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Andrés R, Jesús ED, Fierro JLG, Terreros P. Bifunctional carbosilane dendrons for the immobilization of zirconocene catalysts on silica. NEW J CHEM 2011. [DOI: 10.1039/c1nj20272c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Unno M. New Chemistry Created by Silanols: From Supramolecular Aggregates to Next-Generation Materials with Highly Regulated Structures. J SYN ORG CHEM JPN 2011. [DOI: 10.5059/yukigoseikyokaishi.69.413] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Abstract
Hexaarylcyclotrisiloxanes were selectively prepared by solvent-free synthesis from diarylsilanediol. These well-known stable compounds were found to undergo palladium-catalyzed cross-coupling reaction with aryl halides in good yields. All of attached aryl groups on silicon atom could be utilized. Furthermore, base-sensitive functionality such as acetyl and nitro groups survived the reaction.
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36
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Polyhedral Oligomeric Silsesquioxanes with Controlled Structure: Formation and Application in New Si-Based Polymer Systems. ADVANCES IN POLYMER SCIENCE 2010. [DOI: 10.1007/12_2010_55] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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37
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Chang S, Matsumoto T, Matsumoto H, Unno M. Synthesis and characterization of heptacyclic laddersiloxanes and ladder polysilsesquioxane. Appl Organomet Chem 2010. [DOI: 10.1002/aoc.1607] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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Pozdnyakova YA, Korlyukov AA, Kononova EG, Lyssenko KA, Peregudov AS, Shchegolikhina OI. Cyclotetrasiloxanetetrols with Methyl Groups at Silicon: Isomers all-cis- and cis-trans-cis-[MeSi(O)OH]4. Inorg Chem 2009; 49:572-7. [DOI: 10.1021/ic9017079] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yulia A. Pozdnyakova
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova 28, 119991 Moscow, Russia
| | - Alexander A. Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova 28, 119991 Moscow, Russia
| | - Elena G. Kononova
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova 28, 119991 Moscow, Russia
| | - Konstantin A. Lyssenko
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova 28, 119991 Moscow, Russia
| | - Alexander S. Peregudov
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova 28, 119991 Moscow, Russia
| | - Olga I. Shchegolikhina
- A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova 28, 119991 Moscow, Russia
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Vilcnik A, Jerman I, Surca Vuk A, Kozelj M, Orel B, Tomsic B, Simoncic B, Kovac J. Structural properties and antibacterial effects of hydrophobic and oleophobic sol-gel coatings for cotton fabrics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:5869-80. [PMID: 19432495 DOI: 10.1021/la803742c] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In a continuation of previous studies, the wetting properties of the hydrophobic diureapropyltriethoxysilane [bis(aminopropyl)-terminated polydimethylsiloxane (1000)] (PDMSU) sol-gel hybrid, which forms washing-resistant water-repellent finishes on cotton fabrics, were further investigated. The addition of 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) to PDMSU resulted in a highly apolar low-energy surface on aluminum with gammaStotal equal to 14.5 mJ/m2 and a DetlaGiwi value of -82 mJ/m2. Mixed PFOTES-PDMSU finishes applied on cotton fabrics increased the water contact angles (thetaw) from approximately 130 degrees (PDMSU) to 147 degrees, also imparting oleophobicity (thetadiiodomethane=130 degrees, thetan-hexadecane=120 degrees) to the finished cotton fabrics. Washing caused breakage of the coating's integrity as established from SEM, which was attributed to the partial removal of PFOTES from the composite films, also shown by subtractive IR attenuated total reflectance (ATR) and XPS spectral measurements made on washed and unwashed fabrics. The antibacterial properties of the PFOTES-PDMSU-finished fabrics were assessed with the transfer method (EN ISO 20743:2007), revealing that the reduction of Escherichia coli bacteria on unwashed cotton fabrics was nearly 100%. Moreover, for washed (10 times) cotton fabrics a much higher bacterial reduction was noted for the PFOTES-PDMSU finishes (60.6+/-10.8%), surpassing PDMSU (30.4+/-6.1%) and commercial fluoroalkoxysilane (FAS) (21.9+/-5.7%) finishes. The structure of PFOTES-PDMSU gels, xerogels, and the corresponding coatings was investigated by analyzing the 29Si NMR and IR ATR spectra and comparing them with the spectra of PFOTES and octameric (T8) PFOTES based polyhedra. The results revealed the tendency of PFOTES to condense in octameric silsesquioxane polyhedra (T8), coexisting in the PDMSU sol-gel network with cyclic tetramers (T4(OH)4) and open cube-like species (T7(OH)3). The presence of -OH-functionalized PFOTES silsesquioxanes, established even in coatings heat-treated at 140 degrees C (15 min), also explained the excellent washing fastness of PFOTES finishes on cotton fabrics. The regenerative nature of the water- and oil-repellent properties of washed PFOTES-PDMSU-finished cotton fabrics was attributed to the surface mobility of the T8 PFOTES based polyhedra, ousted from the coating interior during consecutive washings.
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Affiliation(s)
- Aljaz Vilcnik
- National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
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Ito R, Kakihana Y, Kawakami Y. Cyclic Tetrasiloxanetetraols: Formation, Isolation, and Characterization. CHEM LETT 2009. [DOI: 10.1246/cl.2009.364] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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42
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Ganesan P, van Lagen B, Marcelis ATM, Sudhölter EJR, Zuilhof H. Siloxanes with Pendent Naphthalene Diimides: Synthesis and Fluorescence Quenching. Org Lett 2007; 9:2297-300. [PMID: 17500560 DOI: 10.1021/ol070562o] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclic siloxanes with pendent naphthalene diimide groups were synthesized via hydrosilylation to form amorphous electron-accepting compounds. Photophysical measurements and >99.9% fluorescence quenching of well-known p-type polymers by the siloxanes demonstrate that these siloxanes form a new class of highly efficient n-type materials that provide some control over intermolecular interactions.
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Affiliation(s)
- Palaniswamy Ganesan
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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43
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Synthesis and structural characterization of functionalized cyclotetrasiloxane rings [4-RC6H4Si(O)OR′]4 (R=Cl, Br, CHCH2, CH2Cl; R′=Na, SiMe3) as scaffolds for the synthesis of models of a silica bound monolayer of fluorescent or second order NLO active organic chromophores. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.09.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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45
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Abe Y, Suyama KI, Gunji T. Synthesis and Structure ofcis-trans-cis-1,3,5,7-Tetraisocyanato-1,3,5,7-tetramethylcyclotetrasiloxane. CHEM LETT 2006. [DOI: 10.1246/cl.2006.114] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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46
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Hirotsu M, Taruno S, Yoshimura T, Ueno K, Unno M, Matsumoto H. Synthesis and Structures of the First Titanium(IV) Complexes with Cyclic Tetrasiloxide Ligands: Incomplete and Complete Cage Titanosiloxanes. CHEM LETT 2005. [DOI: 10.1246/cl.2005.1542] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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47
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Kickelbick G. Die vielfältige Welt der Siliciumchemie. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200503350] [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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48
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Kickelbick G. The diverse world of silicon chemistry: 14th International Symposium on Organosilicon Chemistry (ISOS XIV) in conjunction with the 3rd European Organosilicon Day, Würzburg, Germany, 31st July to 5th August, 2005. Angew Chem Int Ed Engl 2005; 44:6804-6. [PMID: 16249990 DOI: 10.1002/anie.200503350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guido Kickelbick
- Vienna University of Technology, Institute of Materials Chemistry, Getreidemarkt 9-165, A1060 Vienna, Austria.
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