In chemistry, mechanically-interlocked molecular architectures (MIMAs) are molecules that are connected as a consequence of their topology. This connection of molecules is analogous to keys on a keychain loop. The keys are not directly connected to the keychain loop but they cannot be separated without breaking the loop. On the molecular level, the interlocked molecules cannot be separated without the breaking of the covalent bonds that comprise the conjoined molecules; this is referred to as a mechanical bond. Examples of mechanically interlocked molecular architectures include catenanes, rotaxanes, molecular knots, and molecular Borromean rings. Work in this area was recognized with the 2016 Nobel Prize in Chemistry to Bernard L. Feringa, Jean-Pierre Sauvage, and J. Fraser Stoddart. The synthesis of such entangled architectures has been made efficient by combining supramolecular chemistry with traditional covalent synthesis, however mechanically interlocked molecular architectures have properties that differ from both "supramolecular assemblies" and "covalently bonded molecules". The terminology "mechanical bond" has been coined to describe the connection between the components of mechanically interlocked molecular architectures. Although research into mechanically interlocked molecular architectures is primarily focused on artificial compounds, many examples have been found in biological systems including: cystine knots, cyclotides or lasso-peptides such as microcin J25 which are proteins, and a variety of peptides. (Wikipedia).
Chemistry - Molecular Structure (43 of 45) Molecular Orbital Theory (Bond Order) 2 - Li
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the molecular orbital theory of lithium.
From playlist CHEMISTRY 14 MOLECULAR STRUCTURE
Ceramic Crystal Structure Geometry
A description of how different bonding causes different geometries in ceramic crystal structures.
From playlist Atomic Structures and Bonding
What are Intermolecular Forces? || Chemical Bonds || Chemistry
Practice Tests available at http://bit.ly/CHEMTESTS - 50 questions + Complete Answer Key Chemistry students often confuse INTERmolecular Forces and INTRAmolecular Forces. What are Intermolecular Forces? These are the electrostatic attractions that draw different chemical species together.
From playlist Chemistry Lessons
Close Packing Crystal Structures
A description of the two types of crystal structures created from close-packed planes.
From playlist Atomic Structures and Bonding
Chemistry - Molecular Structure (36 of 45) Hybridization Summary
Visit http://ilectureonline.com for more math and science lectures! In this video I will summarize all the hybrid bonding.
From playlist CHEMISTRY 15 HYBRIDIZATION
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
RSA Conference USA 2010: There's No ""Point"" to Security Anymore 3/3
Clip 3/3 Speaker: David DeWalt, President & CEO, McAfee, Inc. The era of providing complete protection by installing multiple best-of-breed security products has passed. Today's world of sophisticated malware, targeted threats, and multi-stage attacks requires security that is smart,
From playlist RSA Conference USA 2010
Chemistry - Solutions (32 Uploading Error of 53) Colligative Properties
This video cuts-off prematurely. For the complete video click: http://www.youtube.com/watch?v=-I1MvN7mWJI
From playlist CHEMISTRY 19 SOLUTIONS
The 2016 Nobel Prizes: Chemistry and Physics!
This Nobel Prize season, dive into the world of the super small for physics and chemistry. It's where the nanocars roam and phase transitions get really weird. Learn more about this year's nobel prizes: https://www.youtube.com/watch?v=_takaZB1-vg Learn more about semiconductors: https://
From playlist Uploads
RSA Conference USA 2010: There's No ""Point"" to Security Anymore 2/3
Clip 2/3 Speaker: David DeWalt, President & CEO, McAfee, Inc. The era of providing complete protection by installing multiple best-of-breed security products has passed. Today's world of sophisticated malware, targeted threats, and multi-stage attacks requires security that is smart,
From playlist RSA Conference USA 2010
Sculpting tissues, building organs by Maithreyi Narasimha
Program ICTP - ICTS Winter School on Quantitative Systems Biology ORGANIZERS: Buzz Baum, Guillaume Salbreux, Stefano Di Talia and Vijaykumar Krishnamurthy DATE: 03 December 2019 to 20 December 2019 VENUE: Ramanujan Lecture Hall, ICTS Bangalore The development of an organism from a s
From playlist Winter School on Quantitative Systems Biology: Quantitative Approaches in Ecosystem Ecology 2020
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
Introduction to Solid State Physics, Lecture 7: Crystal Structure
Upper-level undergraduate course taught at the University of Pittsburgh in the Fall 2015 semester by Sergey Frolov. The course is based on Steven Simon's "Oxford Solid State Basics" textbook. Lectures recorded using Panopto, to see them in Panopto viewer follow this link: https://pitt.host
From playlist Introduction to Solid State Physics
Playing with Platonic and Archimedean Solids by Swati Sircar and Susy Varughese
SUMMER SCHOOL FOR WOMEN IN MATHEMATICS AND STATISTICS POPULAR TALKS (TITLE AND ABSTRACT) June 17, Friday, 15:45 - 16:45 hrs Swati Sircar (AzimPremji University, Bengaluru, India) Title: Playing with Platonic and Archimedean Solids Abstract: While the 5 Platonic solids are quite popular
From playlist Summer School for Women in Mathematics and Statistics - 2022
IB Chemistry Topic 4.2 Covalent bonding
IB Chemistry Topic 4.2 Covalent bonding How to determine if a compound is covalent or ionic (degree of covalent character), how polar the covalent bond is and if the molecule itself is polar. A look also into the strength of the covalent bond. PPTs and quizzes are available on http://www.
From playlist Topic 4/14 Chemical structure and bonding
Xavier Bresson - Graph MLP-Mixer for Molecular Analysis - IPAM at UCLA
Recorded 25 January 2023. Xavier Bresson of the National University of Singapore presents "Graph MLP-Mixer for Molecular Analysis" at IPAM's Learning and Emergence in Molecular Systems Workshop. Abstract: Graph Neural Networks (GNNs) have shown great potential in the field of graph represe
From playlist 2023 Learning and Emergence in Molecular Systems
Alexandre Tkatchenko: "Towards a Unified Machine Learning Model of Molecular Chemical Space"
Machine Learning for Physics and the Physics of Learning 2019 Workshop I: From Passive to Active: Generative and Reinforcement Learning with Physics "Towards a Unified Machine Learning Model of Molecular Chemical Space" Alexandre Tkatchenko, University of Luxembourg Institute for Pure an
From playlist Machine Learning for Physics and the Physics of Learning 2019
Catchbond mediated oscillations in motor-microtubule complex by Sudipto Muhuri
DISCUSSION MEETING: 7TH INDIAN STATISTICAL PHYSICS COMMUNITY MEETING ORGANIZERS : Ranjini Bandyopadhyay, Abhishek Dhar, Kavita Jain, Rahul Pandit, Sanjib Sabhapandit, Samriddhi Sankar Ray and Prerna Sharma DATE: 19 February 2020 to 21 February 2020 VENUE: Ramanujan Lecture Hall, ICTS Ba
From playlist 7th Indian Statistical Physics Community Meeting 2020
Chemistry - Liquids and Solids (2 of 59) InTERmolecular and InTRAmolecular Forces
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the difference between inTERmolecular and inTRAmolecular forces.
From playlist CHEMISTRY 16 LIQUIDS AND SOLIDS
Black Hat USA 2010: Understanding Fragmentation Heap: From Allocation to Exploitation 1/4
Speaker: Chris Valasek Over the years, heap exploitation has continued to increase in difficulty, along with the complexity of heap algorithms and data structures. Due to anti-exploitation counter measures and lack of comprehensive heap knowledge, reliable exploitation has severely declin
From playlist Black Hat USA 2010