Podcasts about chemical science

Gugs Mhlungu speak to Lecture in Chemical Science at UJ, Dr. Mathapelo Seopela on the results of their recent study which found high concentrations of polycyclic aromatic hydrocarbons in the river, a crucial water source in Gauteng, which poses a significant threat to aquatic life, livestock, and human health.See omnystudio.com/listener for privacy information.

Researchers to explore the use of gel electrolyte materials to improve lithium-ion batteries to help build greener batteries The batteries are the most commonly used in electric vehicles and electronics Will use non-harmful, non-flammable and renewably sourced materials for next generation battery technologies. Aston University researchers are to explore the use of gel electrolyte materials to make lithium-ion batteries - the most commonly used for electric vehicles and electronics - safer and less environmentally damaging. Working to have greener batteries The University has received a grant of £443,058 from the Engineering and Physical Sciences Research Council to develop safe, reliable, sustainable and commercially relevant gel electrolyte materials. Currently batteries and other energy storage devices are assembled via multiple laborious processing steps and typically use flammable solvents and fossil fuel-derived materials with poor thermal and chemical stability. The researchers will develop renewable ionogels which conduct electrically charged ions. Gel electrolyte materials in the lab The gel electrolyte materials will replace current harmful, flammable components and will help prevent batteries from leaking. The Aston University team is led by Dr Matt Derry, a lecturer in chemistry, who is based in the University's College of Engineering and Physical Sciences He said: "There is a need to identify new solutions for sustainable energy storage but one of the biggest barriers to the uptake of renewable energy is the lack of scalable methods of storing electrical energy. "We will create recyclable gel electrolytes using non-harmful, non-flammable and renewably sourced materials for next generation battery technologies." In addition to the research grant to start on 1 March 2024, Dr Derry and his team have just had a paper published in Chemical Science, the Royal Society of Chemistry's flagship open access journal: "Block copolymer synthesis in ionic liquid via polymerisation-induced self-assembly: a convenient route to gel electrolytes", which showcases the generation of ionogels via their new approach. He said: "This transformative research programme will deliver new sustainable, responsive ionogel materials which are easier to manufacture. "The ionogels developed in this project will help to address the significant shortcomings in the underutilisation of renewable energy in the coming years and will contribute to the UK's drive to achieve net zero greenhouse gas emissions by 2050. "Given the desperate need for sustainable energy storage solutions, as recognised by the UN with Sustainable Development Goal 7 on affordable and clean energy, the proposed research is timely and impactful." As a result of the ongoing research, PhD student Georgia Maitland who contributed to the scientific paper will be employed as a post-doctoral researcher at Aston University. The research project will end in February 2027. Block copolymer synthesis in ionic liquid via polymerisation induced self-assembly: a convenient route to gel electrolytes is published in Chemical Science https://doi.org/10.1039/ D3SC06717C Georgia L. Maitland, Mingyu Liu, Thomas J. Neal, James Hammerton, Yisong Han, Stephen D. Worrall, Paul D. Topham and Matthew J. Derry Author affiliations Aston Advanced Materials Research Centre, Aston University, Birmingham, UK EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, UK Department of Physics, University of Warwick, Coventry, UK For more details of the project view https://gtr.ukri.org/projects? ref=EP%2FY005309%2F1 See more breaking stories here.

Anion binding and ion-pairing of organoplatinum(II) complexes with countercations increases solid-state phosphorescence 75 times Enhancing Solid-State Phosphorescence in Pi Electronic Molecules Pi Electronic molecules are luminescent materials with applications in photonics. However, they lose their luminosity in the solid state due to self-association. To address this issue, researchers from Ritsumeikan University, Japan introduced chloride ions and cations to dipyrrolyldiketone PtII complexes, creating a charge-by-charge arrangement. This innovative approach prevents self-association of Pi-electronic molecules, maintaining luminescent properties in the solid state. The study opens avenues for new emissive materials with potential applications in organic electronics and flexible displays. Photoluminescent molecules, capable of absorbing and re-emitting light, play an important role in the development of technologies such as light-emitting diodes, sensors, and displays. Among them, ordered arrangements of Pi-electronic molecules such as crystals of organoplatinum(II) complexes, where a platinum(II) ion is coordinated by organic ligands in a square-planar arrangement, stand out for their applications in energy-efficient flexible displays. However, their luminescence in the solid state is short-lived due to the interaction between excitons (bound electron-hole pairs) of neighboring molecules. To address this issue, bulky foreign molecules are introduced into the molecular structure to prevent or minimize the electronic interactions between molecules. Using this strategy, a research team led by Professor Hiromitsu Maeda from Ritsumeikan University, Japan, recently enhanced the solid-state phosphorescence in multiple organoplatinum(II) complexes, increasing the phosphorescence by upto 75 times. "Spatially and electronically isolated ordered arrangement of emissive ?-electronic molecules is a principal point for the preparation of emissive solid-state materials. This concept can be used in materials for organic electronics, particularly organic light-emitting diodes for flexible displays," explains Prof. Maeda. In their study published in Chemical Science on December 5, 2023, the research team synthesized dipyrrolyldiketone PtII complexes consisting of four different C^N ligands. These molecules display strong phosphorescence in solution but show extremely weak phosphorescence in the solid state due to self-association. To enhance their luminosity in the solid state, the team introduced ion pairs consisting of a chloride anion and tetraalkylammonium countercations: TPA+ (tetrapropylammonium), TBA+ (tetrabutylammonium), and TPeA+ (tetrapentylammonium). This resulted in ion-pairing assemblies consisting of chloride ion-binding PtII complexes and countercations. The chloride ions bind to the PtII complex via hydrogen bonds, while the cations form layers between the ?-electronic molecules. X-ray analysis confirmed the complex's rigid structure, where PtII complexes are separated by cations in charge-by-charge arrangements. By isolating the electronic molecules from each other, the researchers enhanced the luminescent properties of the organoplatinum(II) complexes in the solid state. Compared to the original anion-free states where the complex is not bonded to the chloride ion, the relative intensity of phosphorescence in Cl-binding PtII complexes with cations showed improvements ranging from 1% to 7.5%, a 75-fold increase over the original molecule. The luminescence also lasts significantly longer, with certain ion-pairing assemblies achieving an emission lifetime nearly 200 times longer than the monomeric PtII complex. Theoretical studies using DFT calculations revealed that the charge-by-charge packing structure prevents the delocalization of the electron wavefunction over PtII complexes. "To the best of our knowledge, such a room-temperature phosphorescence enhancement by anion binding and ion-pairing assembly has not been demons...

Die Themen in den Wissensnachrichten: +++ Viele Türen für Coronaviren +++ Junge und weibliche Geflüchtete werden eher aufgenommen +++ Klimawandel: Erdmännchen sterben früher +++**********Weiterführende Quellen zu dieser Folge:The ACE2 receptor accelerates but is not biochemically required for SARS-CoV-2 membrane fusion, Chemical Science, 07.07.2023Europeans' support for refugees of varying background is stable over time, Nature, 09.08.2023The microbiota of Mozzarella di Bufala Campana PDO cheese: a study across the manufacturing process, Frontiers In Microbiology, 15.08.2023Leaky-Integrate-and-Fire Neuron-Like Long-Short-Term-Memory Units as Model System in Computational Biology, IEEE Xplore, 02.08.2023Flushing away the future: The effects of wastewater treatment plants on aquatic invertebrates, Water Research, 28.07.2023Climate change drives loss of bacterial gut mutualists at the expense of host survival in wild meerkats, Global Change Biology, 24.07.2023**********Ihr könnt uns auch auf diesen Kanälen folgen: Tiktok und Instagram.**********Weitere Wissensnachrichten zum Nachlesen: https://www.deutschlandfunknova.de/nachrichten

An Introduction to Chemical Science

Broadcast on radio from 1935 to 1953, Cavalcade of America was an anthology drama series that documented historical events, often through dramatization. In addition, it occasionally presented musicals, such as an adaptation of Show Boat, and condensed biographies of popular composers. It was later on television from 1952 to 1957. GSMC Classics presents some of the greatest classic radio broadcasts, classic novels, dramas, comedies, mysteries, and theatrical presentations from a bygone era. The GSMC Classics collection is the embodiment of the best of the golden age of radio. Let Golden State Media Concepts take you on a ride through the classic age of radio, with this compiled collection of episodes from a wide variety of old programs. ***PLEASE NOTE*** GSMC Podcast Network presents these shows as historical content and have brought them to you unedited. Remember that times have changed and some shows might not reflect the standards of today's politically correct society. The shows do not necessarily reflect the views, standards, or beliefs of Golden State Media Concepts or the GSMC Podcast Network. Our goal is to entertain, educate give you a glimpse into the past.

In Exploration Science Episode 7, two of the co-founders of Belyntic, Dominik Sarma and Oliver Reimann, discuss PEC technology. Listen in to learn about an alternative to the chromatographic status quo and how a college study group transformed into a groundbreaking technology company. Links and references: Animation Video: https://www.youtube.com/watch?v=W_GA_qp8Y2I Workshop with a general Introduction, and deep dive into Parallel Peptide Purification and Late-Stage Peptide Modification: https://www.youtube.com/watch?v=gtMoxsAfbjg Startup-Story (with Bachem): https://www.youtube.com/watch?v=jOnONSuCtRA Introduction to the new PEC-Linker RC+ (with Bachem): https://www.youtube.com/watch?v=5Q6WvKdDASw PEC for Peptide Modification (with Bachem): https://youtu.be/mJWs113nepk Papers can be found here: https://belyntic.com/publications R. Zitterbart, N. Berger, O. Reimann, G. Noble, S. Lüdtke, D. Sarma, O. Seitz, Traceless parallel peptide purification by a first-in-class reductively cleavable linker system featuring a safety-release, Chemical Science, 2021 https://www.chemistryworld.com/news/hplc-alternative-purifies-peptide-cocktails-in-record-time/4013253.article Blogs: https://belyntic.com/news https://belyntic.com/news-details?title=belyntic-flashback-2021 https://belyntic.com/news-details?title=orthogonal-peptide-purification

In Exploration Science Episode 7, two of the co-founders of Belyntic, Dominik Sarma and Oliver Reimann, discuss PEC technology. Listen in to learn about an alternative to the chromatographic status quo and how a college study group transformed into a groundbreaking technology company. Links and references: Animation Video: https://www.youtube.com/watch?v=W_GA_qp8Y2I Workshop with a general Introduction, and deep dive into Parallel Peptide Purification and Late-Stage Peptide Modification: https://www.youtube.com/watch?v=gtMoxsAfbjg Startup-Story (with Bachem): https://www.youtube.com/watch?v=jOnONSuCtRA Introduction to the new PEC-Linker RC+ (with Bachem): https://www.youtube.com/watch?v=5Q6WvKdDASw PEC for Peptide Modification (with Bachem): https://youtu.be/mJWs113nepk Papers can be found here: https://belyntic.com/publications R. Zitterbart, N. Berger, O. Reimann, G. Noble, S. Lüdtke, D. Sarma, O. Seitz, Traceless parallel peptide purification by a first-in-class reductively cleavable linker system featuring a safety-release, Chemical Science, 2021 https://www.chemistryworld.com/news/hplc-alternative-purifies-peptide-cocktails-in-record-time/4013253.article Blogs: https://belyntic.com/news https://belyntic.com/news-details?title=belyntic-flashback-2021 https://belyntic.com/news-details?title=orthogonal-peptide-purification

This Friday's special guest is my good friend @ronnieruyonga. Ronnie has a Ph.D in Pharmaceutical and Chemical Science, Organic Synthesis, Drug Design and Discovery. He pretty much works on formulating medicine and vaccines. Ronnie and I have been friends since highschool. He is currently based out of Santa Barbara, California. In this episode, we sit-down and virtually discuss about a variety of topics ranging from: his influences, what he does for a living. COVID -19 vaccine and much more. #LessonsLearnedATW #COVID19Vaccine #Medicine --- This episode is sponsored by · Anchor: The easiest way to make a podcast. https://anchor.fm/app Support this podcast: https://anchor.fm/lessonslearnedatw/support

Richard Socher, ex-Chief Scientist at Salesforce, joins us to talk about The AI Economist, NLP protein generation and biggest challenge in making ML work in the real world. Richard Socher was the Chief scientist (EVP) at Salesforce where he lead teams working on fundamental research(einstein.ai/), applied research, product incubation, CRM search, customer service automation and a cross-product AI platform for unstructured and structured data. Previously, he was an adjunct professor at Stanford’s computer science department and the founder and CEO/CTO of MetaMind(www.metamind.io/) which was acquired by Salesforce in 2016. In 2014, he got my PhD in the [CS Department](www.cs.stanford.edu/) at Stanford. He likes paramotoring and water adventures, traveling and photography. More info: - Forbes article: https://www.forbes.com/sites/gilpress/2017/05/01/emerging-artificial-intelligence-ai-leaders-richard-socher-salesforce/) with more info about Richard's bio. - CS224n - NLP with Deep Learning(http://cs224n.stanford.edu/) the class Richard used to teach. - TEDx talk(https://www.youtube.com/watch?v=8cmx7V4oIR8) about where AI is today and where it's going. Research: Google Scholar Link(https://scholar.google.com/citations?user=FaOcyfMAAAAJ&hl=en) The AI Economist: Improving Equality and Productivity with AI-Driven Tax Policies Arxiv link(https://arxiv.org/abs/2004.13332), blog(https://blog.einstein.ai/the-ai-economist/), short video(https://www.youtube.com/watch?v=4iQUcGyQhdA), Q&A(https://salesforce.com/company/news-press/stories/2020/4/salesforce-ai-economist/), Press: VentureBeat(https://venturebeat.com/2020/04/29/salesforces-ai-economist-taps-reinforcement-learning-to-generate-optimal-tax-policies/), TechCrunch(https://techcrunch.com/2020/04/29/salesforce-researchers-are-working-on-an-ai-economist-for-more-equitable-tax-policy/) ProGen: Language Modeling for Protein Generation: bioRxiv link(https://www.biorxiv.org/content/10.1101/2020.03.07.982272v2), [blog](https://blog.einstein.ai/progen/) ] Dye-sensitized solar cells under ambient light powering machine learning: towards autonomous smart sensors for the internet of things Issue11, (**Chemical Science 2020**). paper link(https://pubs.rsc.org/en/content/articlelanding/2020/sc/c9sc06145b#!divAbstract) CTRL: A Conditional Transformer Language Model for Controllable Generation: Arxiv link(https://arxiv.org/abs/1909.05858), code pre-trained and fine-tuning(https://github.com/salesforce/ctrl), blog(https://blog.einstein.ai/introducing-a-conditional-transformer-language-model-for-controllable-generation/) Genie: a generator of natural language semantic parsers for virtual assistant commands: PLDI 2019 pdf link(https://almond-static.stanford.edu/papers/genie-pldi19.pdf), https://almond.stanford.edu Topics Covered: 0:00 intro 0:42 the AI economist 7:08 the objective function and Gini Coefficient 12:13 on growing up in Eastern Germany and cultural differences 15:02 Language models for protein generation (ProGen) 27:53 CTRL: conditional transformer language model for controllable generation 37:52 Businesses vs Academia 40:00 What ML applications are important to salesforce 44:57 an underrated aspect of machine learning 48:13 Biggest challenge in making ML work in the real world Visit our podcasts homepage for transcripts and more episodes! www.wandb.com/podcast Get our podcast on Soundcloud, Apple, Spotify, and Google! Soundcloud: https://bit.ly/2YnGjIq Apple Podcasts: https://bit.ly/2WdrUvI Spotify: https://bit.ly/2SqtadF Google: http://tiny.cc/GD_Google Weights and Biases makes developer tools for deep learning. Join our bi-weekly virtual salon and listen to industry leaders and researchers in machine learning share their research: http://tiny.cc/wb-salon Join our community of ML practitioners: http://bit.ly/wb-slack Our gallery features curated machine learning reports by ML researchers. https://app.wandb.ai/gallery

MacDiarmid Institute Associate Investigator and Research Scientist at the Photon Factory in the School of Chemical Science at the University of Auckland, Michel Nieuwoudt gives us her take on Star Trek's Tricorder.

Vincent is joined by Dr. Nancy Haegel, Center Director of the Materials Science Center in the Materials and Chemical Science and Technology Directorate at the National Renewable Energy Laboratory, Colorado. Taking Stock with Vincent Wall on Apple Podcasts, Google Podcasts and Spotify.      Download, listen and subscribe on the Newstalk App.     You can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.

Sophia Chen of MRS Bulletin interviews Tina Škorjanc, a PhD student at New York University in Abu Dhabi in the United Arab Emirates, and her professor Dinesh Shetty at Khalifa University, Abu Dhabi, about porphyrin–based covalent organic frameworks they developed that remove the toxic substance bromate from drinking water. Read the article in Chemical Science. TranscriptSOPHIA CHEN: Drinking water: Whether it’s out of the tap, the refrigerator, or a bottle, we expect it to be clean. Water treatment plants oblige, with a complicated sequence of filtration and purification processes. During a last purification step, the treatment plants add ozone to disinfect the water. The ozone removes odor, color, and taste, and it does this all quickly. But a potential dangerous side effect of the ozone turns harmless, naturally occurring bromine ions in the water into the toxic substance bromate. Tina Škorjanc, a PhD student at New York University in Abu Dhabi in the United Arab Emirates, is working on methods to remove bromate from drinking water.TINA ŠKORJANC: It has been linked to a whole series of health conditions in humans and has been linked to cancer, which is why we think it is important to remove it.SC: Škorjanc’s team has developed a new material that can remove bromate much faster than any other existing method. TS: We really outperformed other materials which were of different classes. This list included inorganic materials, activated carbons, metal organic frameworks, a couple of other polymers, our rates really surpassed the ones reported for these other materials. SC: Dinesh Shetty, Škorjanc’s colleague and a professor at Khalifa University, also in Abu Dhabi, says that their group is the first to create a covalent organic framework specifically for bromate removal. DINESH SHETTY: Compared to normal polymers, covalent organic frameworks are ordered structures. It has defined structure, you can study exactly what is happening within this framework, you know exactly where bromate is going, how it is interacting with this material. SC: Bromate likes to stick to this material, because the material is positively charged and electrostatically attracts the negatively charged bromate. DS: If you think about other covalent organic frameworks, you have to synthesize COF first and then introduce positive charges. We are reducing one step, synthetically, if you think about it. TS: We can do our bromate adsorption experiment, take that material which has bromate on its surface and in its pores, remove those molecules by simple treatment with sodium hydroxide followed by neutralization, and we can reuse that same batch for bromate adsorption again. What’s important in the second step is the efficiency doesn’t drop. We’re still able to remove the same amount of bromate that was removed in the first cycle. SC: It’s still unclear whether this material will be economically viable for adoption by existing water treatment plants. But their work opens the door to further development of covalent organic frameworks that remove bromate. And in the meantime, their team is working to figure out how to scale up their experiment and eventually test it in a water research center in Abu Dhabi. DS: We are dealing with something which can directly impact society. If our plan works, if it becomes water purification material for bromate removal, we are helping millions all around the world. That’s real motivation for us. SC: My name is Sophia Chen from the Materials Research Society. Follow us on twitter, @MRSBulletin. Don’t miss the next episode of MRS Bulletin Materials News – subscribe now. Thank you for listening.

The Drennan Lab originally developed this training on stereotype threat and unconscious bias for 5.111 Principles of Chemical Science and other Chemistry Department teaching assistants (TAs).

In this video, Catherine Drennan notes that 5.111 Principles of Chemical Science is a class in which students can discover their passion for chemistry, or plant the seeds for later understanding chemistry's central role in many fields.

In this video, Cathy Drennan discusses her interest in education and shares her unique path toward teaching 5.111 Principles of Chemical Science at MIT.