In chemistry, a molecular knot is a mechanically interlocked molecular architecture that is analogous to a macroscopic knot. Naturally-forming molecular knots are found in organic molecules like DNA, RNA, and proteins. It is not certain that naturally occurring knots are evolutionarily advantageous to nucleic acids or proteins, though knotting is thought to play a role in the structure, stability, and function of knotted biological molecules. The mechanism by which knots naturally form in molecules, and the mechanism by which a molecule is stabilized or improved by knotting, is ambiguous. The study of molecular knots involves the formation and applications of both naturally occurring and chemically synthesized molecular knots. Applying chemical topology and knot theory to molecular knots allows biologists to better understand the structures and synthesis of knotted organic molecules. The term knotane was coined by Vögtle et al. in 2000 to describe molecular knots by analogy with rotaxanes and catenanes, which are other mechanically interlocked molecular architectures. The term has not been broadly adopted by chemists and has not been adopted by IUPAC. (Wikipedia).
Scientists tie tightest knot ever
New molecular knots like this one could mean stronger, more flexible polymers. Learn more: http://scim.ag/2jvPqz5
From playlist Materials and technology
Untangling the beautiful math of KNOTS
Visit ► https://brilliant.org/TreforBazett/ to help you learn STEM topics for free, and the first 200 people will get 20% off an annual premium subscription. Check out my MATH MERCH line in collaboration with Beautiful Equations ►https://www.beautifulequation.com/pages/trefor Suppose yo
From playlist Cool Math Series
Algebraic topology: Fundamental group of a knot
This lecture is part of an online course on algebraic topology. We calculate the fundamental group of (the complement of) a knot, and give a couple of examples. For the other lectures in the course see https://www.youtube.com/playlist?list=PL8yHsr3EFj52yxQGxQoxwOtjIEtxE2BWx
From playlist Algebraic topology
What is a Coordinate Covalent Bond?
This chemistry video tutorial provides a basic introduction into coordinate covalent bond. Line any covalent bond, electrons are shared. However, in a coordinate covalent bond, one atom donates both electrons that contribute to the formation of the bond. A lewis acid lewis base reaction
From playlist New AP & General Chemistry Video Playlist
Chemistry - Molecular Structure (1 of 45) Basic Shapes - Linear
Visit http://ilectureonline.com for more math and science lectures! Next video can be found at: https://youtu.be/VBrSu-9pBls In this video I will introduce the basic linear shapes of the molecular structure.
From playlist CHEMISTRY 14 MOLECULAR STRUCTURE
Chemistry - Molecular Structure (44 of 45) Molecular Orbital Theory (Bond Order) 3 - H to Ne
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the the molecular orbital theory of H, He, Li, Be, B, C, N, O, F, Ne.
From playlist CHEMISTRY 14 MOLECULAR STRUCTURE
Erica Flapan (9/18/18): Topological and geometric symmetries of molecular structures
How does a chemist know that a molecule that he or she has synthesized has the desired form? Most non-biological molecules are too small to see in a microscope or even with the help of an electron micrograph. So chemists need to collect experimental data as evidence that a synthetic mole
From playlist AATRN 2018
What Are Covalent Bonds | Properties of Matter | Chemistry | FuseSchool
What Are Covalent Bonds | Properties of Matter | Chemistry | FuseSchool Learn the basics about covalent bonds, when learning about properties of matter. When similar atoms react, like non-metals combining with other non-metals, they share electrons. This is covalent bonding. Non-metals
From playlist CHEMISTRY
Regulation of motor traffic and control of noisy gene expression by Debashish Chowdhury
Collective Dynamics of-, on- and around Filaments in Living Cells: Motors, MAPs, TIPs and Tracks DATE: 28 October 2017 to 02 November 2017 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Our knowledge of cytoskeletal filaments, nucleic acid filaments (DNA and RNA) as well as their associat
From playlist Collective Dynamics of-, on- and around Filaments in Living Cells: Motors, MAPs, TIPs and Tracks
Topological methods for characterizing the relationship between polymer entang... - Eleni Panagiotou
Workshop on Topology: Identifying Order in Complex Systems Topic: Topological methods for characterizing the relationship between polymer entanglement and viscoelasticity Speaker: Eleni Panagiotou Affiliation: University of Tennessee, Chattanooga Date: November 20, 2020 For more video pl
From playlist Mathematics
Chemistry - Molecular Structure (16 of 35) Dipole Moment - Basics
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the basics of the dipole moment.
From playlist CHEMISTRY 14 MOLECULAR STRUCTURE
Circumgalacitc medium-a laboratory for astrophysical fluid dynamics by Prakriti Pal choudhury
DISCUSSION MEETING FLUIDS DAY ORGANIZERS: Rama Govindarajan, Samriddhi Sankar Ray and Gaurav Tomar DATE : 20 January 2020 VENUE: Ramanujan Lecture Hall, ICTS Bangalore The fluid mechanics community in Bangalore has expanded enormously with different physics and engineering departments
From playlist Fluids Day 2020
Symposium on Computational Geometry 2014 plenary talk: "Design of 3D printed mathematical art"
Slides: https://www.math.okstate.edu/~segerman/talks/design_of_3d_printed_math_art.pdf
From playlist 3D printing
EAS Steps Forward: Mechanics of Robotic Matter - Chiara Daraio
EAS Steps Forward showcases the community and the research within the Division of Engineering and Applied Science at Caltech. For more information about Professor Daraio's research: http://www.daraio.caltech.edu/ ©2021 California Institute of Technology
From playlist EAS Steps Forward
Chemistry - Molecular Structure (42 of 45) Molecular Orbital Theory (Bond Order) - H and He
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the molecular orbital theory or hydrogen and helium (bond order).
From playlist CHEMISTRY 14 MOLECULAR STRUCTURE
From playlist Courses and Series
Polygons in three dimensions might seem simple, but their geometry connects many areas of math and has surprising applications to chemistry and signal processing. In this video, I give a brief introduction to the moduli space of polygons in Euclidean space. This is a submission for the Sum
From playlist Summer of Math Exposition 2 videos
HEDS | Wide Ranging Ionic Transport Coefficients for High-Energy Density Applications
HEDS Seminar Series – Luke Stanek – May 27th, 2021 LLNL-VIDEO- 825018
From playlist High Energy Density Science Seminar Series
Three Knot-Theoretic Perspectives on Algebra - Zsuzsanna Dancso
Zsuzsanna Dancso University of Toronto; Institute for Advanced Study September 21, 2011 For more videos, visit http://video.ias.edu
From playlist Mathematics