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Molecules Webinar | Polyhedral Oligomeric Silsesquioxanes (POSS) — Synthesis, Functionalization, Applications

20 Sep 2021, 13:00 (CEST)

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Welcome from the Chair

18th Molecules Webinar

Polyhedral Oligomeric Silsesquioxanes (POSS) — Synthesis, Functionalization, Applications

Polyhedral oligomeric silsesquioxanes (POSS) combine the features of inorganic and organic matter as they are composed of an inorganic -Si-O- core cage, and various organic groups that can be attached to the Si atoms. Notably, with an appropriate functionalization of the vertex groups, POSS can be applied as precursors in the synthesis of new nanomaterials or be incorporated in the organic polymer matrix as a reactive or inert filler. In that respect, functionalized POSS may serve as unique nanobuilding blocks in the synthesis of novel hybrid materials with improved characteristics over the traditional composites.
In recent years, functionalizations of POSS molecules and their incorporation into polymeric matrices have paved new ways for reinforced engineering composites, flame-retardant fillers or tissue engineering scaffolds and drug delivery systems. During this Webinar, POSS synthesis and functionalisation routes will be presented, and there will be a discussion on the glass transition in POSS containing polymers and on the effects of silsesquioxane structure on the polymeric matrix.
The related Special Issue titled "Polyhedral Oligomeric Silsesquioxanes (POSS) — Synthesis, Functionalization, Applications" in Molecules is open for submissions! More details can be found here.

Date: 20 September 2021

Time: 1:00pm CEST | 7:00am EDT | 7:00pm CST Asia

Webinar ID: 873 4795 8050

Webinar Secretariat: molecules.webinar@mdpi.com

Chair

Department of Chemistry and Technology of Polymers, Cracow University of Technology, Poland

DETAILS
Bio
Professor Krzysztof Pielichowski, head of Department of Chemistry and Technology of Polymers, Cracow University of Technology, is an expert in polymer (nano)technology and chemistry, particularly in the areas of polymer nanocomposites with engineering polymers, and hybrid organic–inorganic materials with POSS, displaying various architectures. He is currently performing a research program in the area of synthesis and evaluation of properties of polyurethane / silsequioxane hybrids with improved thermal and mechanical properties, in which POSS moieties are covalently linked or physically mixed. One of the main aims of the performed research works is to find the crucial structure–property relationships. He is a co-author or editor of eight books and over 140 papers with impact factors, and was supervisor of eleven Ph.D. theses (completed).

Invited Speakers

Department of Science and Innovation Technology (DiSIT), University of Eastern Piedmont, Italy

DETAILS
Bio
Enrico Boccaleri is Associated Professor at the University of Eastern Piedmont, at the Department of Science and Innovation Technology (DiSIT). His main research activities are related to the synthesis and characterisation of inorganic and hybrid materials with one to three nanoscaled dimensions. He investigated the role of nanomaterials as functional additives for challenging features as modifying properties of common polymers, improving the thermal and mechanical behaviour as well as functional properties. His current research context is focused on matching interactions at the nanometric level with macroscopic features, with the scope of designing efficient materials for sustainable performances. He is co-author of more than 70 papers on international journals and of five national and international patents.

Department of Chemistry and Technology of Polymers, Cracow University of Technology, Poland

DETAILS
Bio
Dr Konstantinos (Kostas) Raftopoulos is an assistant professor at the Department of Chemistry and Technology of Polymers of Cracow University of Technology. He is a Physicist with a PhD from the National Technical University of Athens. He has worked as a postdoc at the CUT and the Technical University of Munich. Over the last decade, he has studied the calorimetric and dynamic glass transition of polyurethane–POSS hybrid materials. For this purpose, he employs Differential Scanning Calorimetry, as well as Dielectric Relaxation Spectroscopy, and Dynamic Mechanical Analysis. Except for polyurethane, POSS, and glass transition, his interests include stimuli responsive behaviour and hydration of polymers. He is a coauthor of 41 peer-reviewed articles, including a review published in “Progress in Polymer Science” on the glass transition of polymer-POSS systems.

Department of Civil Engineering and Architecture and UdR-Catania Consorzio INSTM, University of Catania, Italy

DETAILS
Bio
Prof Blanco got his degree in industrial chemistry at the University of Catania and his PhD in “Polymeric materials for special uses” at the University of Catania. He is Assistant Professor at the Department of Physical and Chemical Methodologies for Engineering of the University of Catania in the scientific sector ING-IND 22 “Science and Technology of Materials” since 02/01/2004 and in the scientific sector CHIM/07 “Chemical Foundations of Technologies" since 08/08/2007. Since 02/01/2011, he has been Associate Professor of “Chemical Foundations of Technologies” and “Elements of Sustainable Green Chemistry” at the Department of Industrial Engineering of the University of Catania and Associate Professor at the Department of Civil Engineering and Architecture of the University of Catania in the scientific sector ING-IND 27 “Industrial and Technological Chemistry” since 02/01/2016. Since 21/12/2018, he has been Full Professor at the Department of Civil Engineering and Architecture of the University of Catania in the scientific sector “Chemical Foundations of Technologies” and he is also the coordinator of the degree course in Civil, Environmental and Management Engineering.

Webinar Content

On Monday 20 September 2021, MDPI and the Journal Molecules organized the 18th webinar, entitled " Polyhedral Oligomeric Silsesquioxanes (POSS) — Synthesis, Functionalization, Applications".

In the beginning, the Chair of the Webinar – Prof. Krzysztof Pielichowski from Cracow University of Technology, Poland, gave a short introduction on polyhedral oligomeric silsesquioxanes (POSS) which, after funtionalization, are useful building blocks in the synthesis of new materials with various applications, e.g. in reinforced polymer composites, as biomedical materials and in catalysis.

The first talk on "POSS synthesis and functionalization” by Prof. Enrico Boccaleri from University of Eastern Piedmont, Italy, focused on both well-established and new synthetic routes leading to POSS with different functional features. In the next presentation given by Dr. Konstantinos Raftopoulos from Cracow University of Technology, Poland, glass transition in POSS containing polymers, including the role of specific POSS incorporation ways, was discussed. In the third lecture, Prof. Ignazio Blanco from University of Catania, Italy, talked about the influence of POSS structure in polymeric matrix dispersion on the properties of hybrid materials, especially their thermal and thermo-oxidative stability.

The presentations were followed by a Q&A and a discussion, moderated by the Chair, in which two important aspects were highlighted, namely (i) the necessity of up-scaling POSS production in order to to develop new products at industrial scale, and (ii) the importance of interdisciplinary research on POSS with the participation of chemists, physicists, biologists, materials science experts, etc. that should considerably help to design new hybrid materials with tailor-made characteristics.

The webinar was offered via Zoom and required registration to attend. The full recording can be found here on Sciforum website. In order to stay updated on the next webinars on Molecules, be sure to sign up for our newsletter by clicking on “Subscribe” at the top of the page.

Registration

This is a FREE webinar. The number of participants to the live session is limited but the recording will be made available on Sciforum shortly afterwards. Registrations with academic institutional email addresses will be prioritized.

Program

Speaker/Presentation

Time in CEST

Prof. Dr. Krzysztof Pielichowski

Chair Introduction

1:00 - 1:05 pm

Dr. Enrico Boccaleri

POSS Synthesis and Functionalisation

1:05 - 1:35 pm

Dr. Konstantinos Raftopoulos

Glass Transition in POSS Containing Polymers

1:35 - 2:05 pm

Prof. Dr. Ignazio Blanco

The Influence of POSS’s Structure in Polymeric Matrix Dispersion

2:05 - 2:35 pm

Q&A

2:35 - 2:55 pm

Closing of Webinar
Prof. Dr. Krzysztof Pielichowski

2:55 - 3:00 pm

Relevant SI

Polyhedral Oligomeric Silsesquioxanes (POSS)—Synthesis, Functionalization, Applications
Guest Editors: Prof. Dr. Krzysztof Pielichowski, Dr. Edyta Hebda & Dr. Konstantinos N. Raftopoulos
Deadline for manuscript submissions: 30 September 2021

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