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Data: 22/11/2021 - 16:00 17:00 |
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3D printing in analytical chemistry: from sample preparation to detection
Manuel Miró Lladó
(Universitat de les Illes Balears, Espanha)
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Colour, Stability and Sustainability of Perovskite Photovoltaics
Matthew Lloyd Davies
(Swansea University)
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Colour, Stability and Sustainability of Perovskite Photovoltaics
Matthew L. Davies, Emmanuel V. Péan, Alex Doolin, Rodrigo García-Rodríguez and Rhys Charles
Applied Photochemistry Group, SPECIFIC IKC, Materials Research Centre, Faculty of Science and Engineering, Swansea University, UK
m.l.davies@swansea.ac.uk
Abstract:
The remarkable evolution of perovskite-based solar cells (PSCs) during the last few years, reaching certified power conversion efficiencies over 25%1 makes them an extremely strong candidate to develop a low cost, low embodied energy, performance-competitive PV technology. However, sustainability, stability and lifetime issues, and a detailed understanding of the fundamental workings of perovskite absorbers are yet to be fully understood. We will present an interesting approach to tune to the colour and properties of PSCs through co-sensitisation with organic dyes.2 We will also discuss our progress with understanding the stability of mesoporous carbon perovskite solar cells (m-CPSC) through measuring superoxide formation in these devices.3 m-CPSCs infiltrated with CH3NH3PbI3 perovskite, have presented excellent lifetimes of more than 10,000 h and are among the frontrunners to commercialisation of perovskite PV. The prospect of industrial manufacture for PSC is in part hampered by concerns regarding the safety and sustainability of the solvents used in lab scale manufacture. We will discuss a methodology for green solvent selection informed by EHS considerations from the CHEM-21 solvent guide for successful methylammonium lead triiodide (MAPbI3) precursor dissolution and alternative solvents for the manufacture of m-CPSCs.4,5
Additionally, although viewed as 'green' technologies due to their ability to generate renewable solar energy, emerging photovoltaic technologies, including perovskites, have environmental impacts associated with their production and will contain hazardous components. Widespread deployment will require a continued supply of critical materials and full lifecycle optimization is necessary at this early stage in development to make these technologies truly sustainable. Here we will discuss the work of The Applied Photochemistry Group at the SPECIFIC Innovation and Knowledge Centre, Swansea University, which aims to develop an understanding of the photo-stability and photochemistry of materials and devices to advance sustainable photovoltaics from lab-scale to production scale manufacture.
References:
1. National Renewable Energy Laboratory. Best Research-Cell Efficiencies. (2021). Available at: https://www.nrel.gov/pv/assets/pdfs/best-research-cell-efficiencies.20190923.pdf
2. Tamara D. McFarlane, Catherine S. De Castro, Peter J. Holliman, Matthew L. Davies. Chemical Communications. 2018; 55(1).
3. E.V. Péan, C.S. De Castro, S. Dimitrov, F. De Rossi, S. Meroni, J. Baker, T.M. Watson, M.L. Davies. Adv. Funct. Mater. 2020, 30, 1909839.
4. A. J. Doolin, R. G. Charles, C. S. P. De Castro, R. G. Rodriguez, E. V. Péan, R. Patidar, T. Dunlop, C. Charbonneau, T. Watson, and M. L. Davies. Green Chem., 2021, 23, 24712486.
5. Worsley, C., Raptis, D., Meroni, S., Doolin, A., Garcia-Rodriguez, R., Davies, M. and Watson, T. Energy Technol., 2021, 9: 2100312.
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Ciência Aberta e Acesso Aberto
Dante Cid
(Elsevier)
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Data: 23/11/2021 - 09:00
Conferência empresa |
Tendências em Preparo de Amostra para Cromatografia
Mariana Baptistão
(Agilent Technologies)
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Data: 23/11/2021 - 11:00 12:00 |
Sustainability and the Chemistry Enterprise
H. N. Cheng
(2021 President, American Chemical Society)
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Abstract:
With increasing public awareness of climate change, environmental pollution, and earth's declining resources, sustainability and green chemistry have become hot topics these days. In 2015, the United Nations adopted 17 sustainable development goals (SDGs) to be achieved in 2030. Chemistry can play a key role in meeting these goals, and the American Chemical Society (ACS) is committed to supporting its members and working with partners to address these SDG's. Several of the SDG's involve innovation, responsible consumption and production, and the food-water-energy nexus. One of the methods to achieve these goals is to use agro-based materials, not only for food and energy but also for product development, such as bioplastics, specialty chemicals, industrial products, and specific materials for different applications. In this talk, the speaker will provide an overview of the sustainability initiatives at ACS and his platform as ACS President in 2021. The speaker will also highlight selected research and development (R&D) areas that are related to green polymer chemistry and agro-based materials, as examples of the ongoing R&D work in sustainability.
Biography
H. N. Cheng is the ACS President in 2021. He has been active at ACS for many years and has served in many leadership roles at local, division, and national levels. He obtained his B.S. from UCLA and his Ph.D. from the University of Illinois at Urbana-Champaign. He currently works at USDA Southern Regional Research Center in New Orleans. Over the years, he has been involved with the use of agro-based materials, biocatalysis, green processing, and green methodology. He has also contributed to polymerization theory and polymer NMR. He has authored or co-authored 290 papers and 26 patent publications. He has organized 45 symposia at national meetings since 2000 and edited 23 books.
He was the recipient of the ACS Volunteer Service Award (2016) and was twice awarded Outstanding Scientist of the Year at USDA Southern Regional Research Center (2014 and 2019). He was selected as a Fellow of the ACS (2009), a Fellow of the ACS Polymer Chemistry Division (2010), and a Fellow of the ACS Agricultural and Food Chemistry Division (2018), among other recognition and awards.
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Data: 23/11/2021 - 16:00 17:00 |
Eletrificando reações químicas. Fundamentos e aplicação industrial
Amanda Garcia
(University of Amsterdam)
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One and two electron chemistry of 2-azaallyl anions
Patrick J. Walsh
(University of Pennsylvania)
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Abstract:
Our team has been interested in the fascinating chemistry of 2-azaallyl anions, which involves both SET reactions and two electron processes. We have found that 2-azaallyl anion undergo cross-coupling with aryl halides and hindered alkyl iodides via SET reactions followed by radical-radical coupling in the absence of transition metal catalysts. This mode of reactivity has been used to prepare valuable heterocycles. Cross dehydrogenative coupling reactions in the absence of transition metals can also be performed, as can a variety of transition metal catalyzed coupling processes.
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The Development of Hsp90 Isoform-selective Inhibitors for the treatment of Cancer, Glaucoma, and other Diseases
Brian Blagg
(University of Notre Dame)
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Abstract
The major goals of Professor Blagg Research Team are to design, synthesize, and evaluate novel inhibitors of the Hsp90 protein folding process. To achieve these goals, they use computer modeling to design new molecules that bind these ATP-binding sites, they develop new organic reactions that allow access to the desired compounds in a highly efficient manner, and finally they develop assays that are suitable for determining the biological effects of their rationally designed Hsp90 inhibitors. Hsp90 has emerged as a promising target for the development of anti-cancer, Alzheimer's, Parkinson's, diabetic peripheral neuropathy, and Multiple Sclerosis agents.
Biography
2018-Present - Member of Editorial Board, International Journal of Molecular Sciences
2017-Present - Director, Warren Family Research Center for Drug Discovery and Development, University of Notre Dame
2017-Present - Charles Huisking Professor of Chemistry and Biochemistry, University of Notre Dame
2014-2017 - Lester and Betty Mitscher Professor, University of Kansas
2010-2017 - Professor of Medicinal Chemistry, University of Kansas
2007-2010 - Associate Professor of Medicinal Chemistry, University of Kansas
2002-2007 - Assistant Professor of Medicinal Chemistry, University of Kansas
1999-2002 - NIH Postdoctoral Fellow, The Scripps Research Institute
1999 - Ph.D. in Organic Chemistry, University of Utah
1994 - B.A. in Chemistry and Environmental Studies, Sonoma State University
Selected Awards
2015 - Baxendale Innovation Award, University of Kansas
2013 - Leading Light Award, University of Kansas
2012 - Kentucky Colonel
2011 - University of Kansas Scholarly Achievement Award
2009 - American Chemical Society David W. Robertson Award in Medicinal Chemistry
2006 - American Cancer Society Research Scholar Award
2006 - Faculty of 1000, Biology
2005 - University of Kansas Outstanding Teacher
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Data: 25/11/2021 - 16:00 17:00 |
New Opportunities for Science at Nanoscale Using Advanced Synchrotron Light Techniques at The Sirius/LNLS
Helio Cesar Nogueira Tolentino
(LNLS)
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Olefin Metathesis Macrocyclization at High Concentration and Other "Missions Impossible"
Karol Leslaw Grela
(University of Warsaw)
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How to Publish in High Quality Journals and RSC Open Access Policy
Elizabeth Magalhães
(RSC Brazil and invited Editorial Board Members TBC)
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| Neil Hammond
(RSC UK)
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