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Mrzygłód A, Rzonsowska M, Dudziec B. Exploring Polyol-Functionalized Dendrimers with Silsesquioxane Cores. Inorg Chem 2023; 62:21343-21352. [PMID: 38055955 DOI: 10.1021/acs.inorgchem.3c03427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Silsesquioxane dendrimers offer versatile structural potential, prompting our innovative synthesis of G1 and G2 polyol dendritic systems with diverse silsesquioxane cores, ranging from mono-T8 to difunctional and tetrafunctional double-decker silsesquioxanes. Through a strategic combination of hydrosilylation and O-silylation reactions, we have formed an extensive compound library. A major focus was directed toward investigating the reaction conditions of G1.5 dendrimers, as well as evaluating the stability and reactivity of the novel -O-Me2Si-H group. Notably, we unveiled solubility trends of these synthesized dendritic systems in basic organic solvents, offering vital information for potential applications. Our work advances dendrimer research by unraveling intricate synthesis, reactivity, and properties. We contribute to the broader understanding of these organic-inorganic complex interactions and envisage diverse applications in multiple domains.
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Affiliation(s)
- Aleksandra Mrzygłód
- Faculty of Chemistry and Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8 and 10, 61-614 Poznan, Poland
| | - Monika Rzonsowska
- Faculty of Chemistry and Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8 and 10, 61-614 Poznan, Poland
| | - Beata Dudziec
- Faculty of Chemistry and Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8 and 10, 61-614 Poznan, Poland
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Mrzygłód A, García Armada MP, Rzonsowska M, Dudziec B, Nowicki M. Metallodendrimers Unveiled: Investigating the Formation and Features of Double-Decker Silsesquioxane-Based Silylferrocene Dendrimers. Inorg Chem 2023; 62:16932-16942. [PMID: 37774086 PMCID: PMC10583206 DOI: 10.1021/acs.inorgchem.3c02628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Indexed: 10/01/2023]
Abstract
Dendrimers exhibiting reversible redox properties have attracted extensive attention for their potential as electron transfer mediators, catalysts, and molecular sensors. In this study, we introduce intriguing G1 and G2 dendrimers featuring double-decker silsesquioxane cores and silylferrocene moieties. Through a carefully orchestrated sequence of condensation, reduction, and hydrosilylation reactions, these compounds were synthesized and comprehensively characterized spectroscopically and spectrometrically. Our investigation also encompassed the examination of their properties, including thermal stability, solubility in common organic solvents, and electrochemical behavior. We determined that these dendrimers possess the capability to form monolayers on platinum electrodes, which we conclusively demonstrated through the probing of cyclic voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy imaging. Notably, this study marks the first-ever example of modifying double-decker silsesquioxane cores with ferrocene groups while simultaneously representing one of the scarce instances of dendrimers exhibiting an open double-decker silsesquioxane core.
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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
| | - M. Pilar García Armada
- Departamento
de Ingeniería Química y Medio Ambiente, Escuela Técnica
Superior de Ingenieros Industriales, Universidad
Politécnica de Madrid, José Gutierrez Abascal 2, 28006 Madrid, Spain
| | - Monika Rzonsowska
- 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
| | - 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
| | - Marek Nowicki
- Centre
for Advanced Technologies, Adam Mickiewicz
University in Poznan, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland
- Institute
of Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
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Zhao X, Wang Q, Kunthom R, Liu H. Sulfonic Acid-Grafted Hybrid Porous Polymer Based on Double-Decker Silsesquioxane as Highly Efficient Acidic Heterogeneous Catalysts for the Alcoholysis of Styrene Oxide. ACS APPLIED MATERIALS & INTERFACES 2023; 15:6657-6665. [PMID: 36588472 DOI: 10.1021/acsami.2c17732] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
β-Alkoxyalcohols generated from epoxide ring-opening reactions are significant due to their enormous value as pharmaceutical intermediates and fine chemicals. Using a phenyl-substituted double-decker-type silsesquioxane as the precursor, a hybrid porous material (PCS-DDSQ) was synthesized through a Scholl coupling reaction with an AlCl3 catalyst. Then, novel excellent Brønsted acid-derived silsesquioxane solid catalysts (PCS-DDSQ-SO3H-x) were successfully obtained through an electrophilic aromatic substitution reaction of chlorosulfonic acid on phenyl rings of PCS-DDSQ, fully characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, powder X-ray diffraction, temperature-programmed desorption, water contact angle, Brunauer-Emmett-Teller model, thermogravimetric analysis, and solid-state 13C and 29Si nuclear magnetic resonance techniques. The catalytic behavior of the PCS-DDSQ-SO3H-x with different SO3H loadings for the methanolysis of styrene oxide was compared and evaluated. The presence of SO3H groups endows them with excellent catalytic abilities, achieving the highest values from PCS-DDSQ-SO3H-1 (the acid site of its catalyst is 1.84 mmol/g) as 99% conversion and 100% selectivity for the methanolysis of styrene oxide in 30 min, which shows superior catalytic properties of low dosage and high efficiency. Furthermore, the PCS-DDSQ-SO3H-1 catalyst can maintain high activity and selectivity after three cycles. This study provides a feasible method for the preparation of Brønsted solid acid catalysts with different acid loadings by introducing the sulfonic group into PCS-DDSQ.
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Affiliation(s)
- Xiaohan Zhao
- International Center for Interdisciplinary Research and Innovation of Silsesquioxane Science, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Qingzheng Wang
- International Center for Interdisciplinary Research and Innovation of Silsesquioxane Science, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, P. R. China
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Rungthip Kunthom
- International Center for Interdisciplinary Research and Innovation of Silsesquioxane Science, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Hongzhi Liu
- International Center for Interdisciplinary Research and Innovation of Silsesquioxane Science, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, P. R. China
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Władyczyn A, Gągor A, Ślepokura K, John Ł. Hydroxyalkyl-substituted double-decker silsesquioxanes: effective separation of cis and trans isomers. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00577h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A procedure to sequentially crystallize the two isomers of hydroxyalkyl-substituted double-decker silsesquioxanes from one another, which may result in the preparation of new materials and polymers with well-defined properties, is reported.
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Affiliation(s)
- Anna Władyczyn
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Anna Gągor
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 2 Okólna, 50-422 Wrocław, Poland
| | - Katarzyna Ślepokura
- 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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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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