Silicon-Based Polymers: From Synthesis to Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 314

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University College, Yonsei University, Incheon 21983, Republic of Korea
Interests: silicon chemistry; semiconductor manufacturing material
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Special Issue Information

Dear Colleagues,

Some scientists and engineers refer to the current era as the "Silicon Age”. This suggests that silicon-based polymers have emerged as essential materials in modern science and engineering, characterized by their unique properties and versatility. The bond enthalpy of Si–O is much larger than that of the C–O bond, rendering the thermal stability of Si-O polymers, and its larger bond angle and longer bond length provide bond flexibility. In addition, uncondensed OH groups (silanol) of siloxane polymers facilitate effective bonding with other materials, such as organic compounds, metal oxides, and metals. Moreover, the Si-Si bond exhibits very different characteristics from the C-C bond in terms of the HOMO-LUMO gap and bond strength.

This Special Issue explores the synthesis, properties, and various applications of silicon-based polymers. Due to their unique properties, silicon-based polymers demonstrate excellent performance on their own and also offer an interesting alternative to traditional organic polymers. Investigations on their applications in sensors, semiconductors, displays, photoactive materials, filters, anodes in lithium-ion batteries, drug delivery systems, catalysts, and biocompatible materials have been conducted. By understanding the intricacies of silicon-based polymer synthesis and their practical applications, we can unlock new potential for advancements in chemistry and materials science, paving the way for cutting-edge innovations in various sectors.

This Special Issue will cover, but will not be limited to, the following aspects of silicon-based polymer chemistry and technology: novel preparation methods for polymers containing Si-O, Si-C, and/or Si-C bonds; the mechanism of the formation of silicon-based polymers; novel chemical and physical properties of silicon-based polymers; and applications of silicon-based polymers.

Prof. Dr. Hyeon Mo Cho
Guest Editor

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Keywords

  • silicon-based polymers
  • polysiloxane
  • polysilane
  • polycarbosilane
  • synthetic method

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Published Papers (1 paper)

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Research

18 pages, 9524 KiB  
Article
Synthesis, Characterization, and Application Prospects of Novel Soluble Polysilsesquioxane Bearing Glutarimide Side-Chain Groups
by Yuliya I. Bolgova, Artem I. Emel’yanov, Olga M. Trofimova, Anastasiya A. Ivanova, Alexander I. Albanov, Nadezhda P. Kuznetsova, Tatyana A. Semenova and Alexander S. Pozdnyakov
Polymers 2024, 16(23), 3235; https://doi.org/10.3390/polym16233235 - 21 Nov 2024
Viewed by 168
Abstract
The requirement for the development of advanced technologies is the need to create new functional thermostable soluble polysilsesquioxanes. Combining the potential of organosilicon chemistry and the chemistry of heterocyclic compounds is a promising direction for the formation of novel organosilicon polymer systems with [...] Read more.
The requirement for the development of advanced technologies is the need to create new functional thermostable soluble polysilsesquioxanes. Combining the potential of organosilicon chemistry and the chemistry of heterocyclic compounds is a promising direction for the formation of novel organosilicon polymer systems with new properties and new possibilities for their practical application. Using the classical method of hydrolysis and polycondensation of previously unknown trifunctional (trimethoxysilylpropyl)glutarimide in the presence or absence of an acid or base catalyst, a universal approach to the formation of new thermostable soluble polysilsesquioxanes with glutarimide side-chain groups is proposed, which forms the basis for the synthesis of polysilsesquioxane polymers with different functionality. The weight average molecular weight of silsesquioxanes, determined by gel permeation chromatography, is practically independent of the reaction conditions and is 10–12 kDa; at the same time, the molecular weight distribution remains low and amounts to 1.38–1.47. According to thermogravimetric analysis, the resulting polysiloxanes have high thermal stability up to 335 °C. By the dynamic light scattering method, it was established that in an aqueous solution, silsesquioxane macromolecules are in an associated state, forming supramolecular structures due to the intermolecular interaction of individual macromolecules. The average hydrodynamic diameter of the particles was 46 nm. X-ray diffraction analysis showed the amorphous nature of the polymer. Polymer film coatings based on synthesized silsesquioxanes are characterized by 98% transmission in the visible spectrum and resistance to ultraviolet radiation, which is promising for the creation of functional transparent film coatings. Full article
(This article belongs to the Special Issue Silicon-Based Polymers: From Synthesis to Applications)
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