Special Issue "Advances in Materials Derived from Polyhedral Boron Clusters"
Deadline for manuscript submissions: 31 July 2020.
Interests: carboranes; stable radicals; liquid crystals; magnetism; photophysics; photovoltaics; electro-optics; fundamental chemistry of boron clusters and radicals
Molecules is pleased to announce a Special Issue dedicated to materials chemistry of boron clusters. Owing their unique steric and electronic properties, polyhedral boranes are attractive structural elements for functional materials such as polymers, dendrimers, ionic liquids, liquid crystals that exhibit luminescent, nonlinear optical, electro-optical and redox properties, among the others. Interest in such specifically designed materials is rapidly increasing, as evident from recent literature reports, reviews and books.
This Special Issue of Molecules is dedicated to recent advances in synthesis, characterization and application of molecular and polymeric materials containing polyhedral boron clusters.
Prof. Dr. Piotr Kaszyński
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- polyhedral borane clusters
- crystal engineering
- ionic liquids
- liquid crystals
- photophysics including nonlinear optics
- fundamental chemistry of materials
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Author: Hye Jin Bae 1, Kang Mun Lee 2, Myung Hwan Park 3
1. Samsung Advanced Institute of Technology, Suwon, Gyeoggi 16678, Republic of Korea.
2.Department of Chemistry, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea.
3.Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
Tentative title: Intriguing Photophysical Properties of N,C-Chelate Four-Coordinated Organoboron Complexes Possesing o-Carborane Cages
Abstract: Four-coordinate organoboron compounds have attracted great attention due to their potential application in organic light-emitting diodes (OLEDs), sensory and photo-responsive materials. In an effort to design a novel moiety of four-coordinate organoboron compounds, we have been interested in 1,2-closo-C2B10H12, so called o-carborane as a substituent since it possesses the unique photophysical properties such as a highly polarizable σ-aromatic achracter, electron-deficient nature, and good thermal and electrochemical stability. Consequently, we introduced the o-carborane cages to the 4- or 5-position of the pyridine ring of the btp (2,6-bis(1,2,3-triazol-4-yl)pyridine) and ppy (2-phenylpyridine) ligands which are the ligand for four-coordinate organoboron compounds. These complexes were synthesized in moderated yield and investigated the photophysical, thermal, and electrochemical characters
Author: Alan J. Welch
Institute of Chemical Sciences, School of Engineering & Physical Sciences, Heriot-Watt University,UK
Tentative Title: Exploiting the Electronic Tuneability of Carboranes as Supports for Frustrated Lewis Pairs
Tentative abstract: It is well-known that carboranes can function as either electron-donating or electron-releasing units depending on whether they are substituted at boron or carbon, respectively. Thus carborane supports can be used modify the strength of Lewis acids and/or Lewis bases which are appended to them. This has the potential to be of great value in Frustrated Lewis Pair (FLP) chemistry since the ability of an FLP to catalyse a particular reaction is critically dependent on the acid and/or base strength.
In this paper we report the first examples of both acid and base FLP components bound to carborane supports and their applications in catalysis. We also report synthetic and spectroscopic studies of derivatives of the Lewis base components which allow us to rank order their Lewis base strengths. The rank order thus established agrees well with the relative catalytic performance of the Lewis base components.
Authors: Zengyong Chu, Zhenhua Jiang
Title: Polymethylsilane modified with ortho-carborane for high-yield Si-C-B ceramics
Abstract: Polymethylsilane (PMS) has a backbone composed entirely of silicon atoms and the Si/C ratio is 1:1. It is regarded as the ideal precursor material to prepare high performance SiC ceramics. However, the pure PMS polymer is faced with poor thermal stability, low ceramic yield, and limited density ceramic density and so on. In view of the above problems, this paper tried to modify PMS with carborane. In this process, carborane is not only the crosslinking agent, but also plays a role in introducing the sintering additives of boron. IR, TG, 1H-NMR, XPS, UV/Vis, fluorescence spectra were used to study the chemical composition, molecular structure, thermal stability and fluorescent properties of the compound. The results show that, compared with pure PMS, ceramic yield of the PMS modified by carborane demonstrate various degree of increase , and the three stages of the thermal behaviors are different. The modified PMS has a strong UV absorption and fluorescence properties ,and it is mainly dominated by the carborane. The modification achieve a better results using the Si-Cl bond in the side-chain. The branched cross-linking method can effectively increase the ceramic yield up to 80wt%. The ceramic materials are mostly composed of Si, C, B, and the atomic ratio close to 1:1:1, laid the foundation for further preparation of high temperature and dense SiC ceramics.