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Jeremy Keith Morris Sanders
Jeremy Keith Morris Sanders (born 3 May 1948) is a British chemist and Emeritus Professor in the Department of Chemistry at the University of Cambridge. He is also Editor-in-Chief of Royal Society Open Science. He is known for his contributions to many fields including NMR spectroscopy and supramolecular chemistry. He served as the Pro-Vice-Chancellor for Institutional Affairs at the University of Cambridge, 2011–2015. Education Educated in London at Southmead Primary School and Wandsworth Comprehensive School, he then studied chemistry at Imperial College London where he graduated with a Bachelor of Science degree in 1969 and was awarded the Edmund White Prize. During 1969–72 he carried out his PhD research on lanthanide shift reagents, especially Eu(DPM), the original reagent developed before Eu(FOD) at Churchill College, Cambridge, supervised by Dudley Williams. Career and Research Elected a fellow of Christ's College, Cambridge, in 1972, he spent a postdoct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial College London
Imperial College London (legally Imperial College of Science, Technology and Medicine) is a public research university in London, United Kingdom. Its history began with Prince Albert, consort of Queen Victoria, who developed his vision for a cultural area that included the Royal Albert Hall, Victoria & Albert Museum, Natural History Museum and royal colleges. In 1907, Imperial College was established by a royal charter, which unified the Royal College of Science, Royal School of Mines, and City and Guilds of London Institute. In 1988, the Imperial College School of Medicine was formed by merging with St Mary's Hospital Medical School. In 2004, Queen Elizabeth II opened the Imperial College Business School. Imperial focuses exclusively on science, technology, medicine, and business. The main campus is located in South Kensington, and there is an innovation campus in White City. Facilities also include teaching hospitals throughout London, and with Imperial College Healthcare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doctor Of Philosophy
A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common Academic degree, degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is an earned research degree, those studying for a PhD are required to produce original research that expands the boundaries of knowledge, normally in the form of a Thesis, dissertation, and defend their work before a panel of other experts in the field. The completion of a PhD is often a requirement for employment as a university professor, researcher, or scientist in many fields. Individuals who have earned a Doctor of Philosophy degree may, in many jurisdictions, use the title ''Doctor (title), Doctor'' (often abbreviated "Dr" or "Dr.") with their name, although the proper etiquette associated with this usage may also be subject to the professional ethics of their own scholarly field, culture, or society. Those who teach at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrocycle
Macrocycles are often described as molecules and ions containing a ring of twelve or more atoms. Classical examples include the crown ethers, calixarenes, porphyrins, and cyclodextrins. Macrocycles describe a large, mature area of chemistry. Synthesis The formation of macrocycles by ring-closure is called macrocylization. Pioneering work was reported for studies on terpenoid macrocycles. The central challenge to macrocyclization is that ring-closing reactions do not favor the formation of large rings. Instead, small rings or polymers tend to form. This kinetic problem can be addressed by using high-dilution reactions, whereby intramolecular processes are favored relative to polymerizations. Some macrocyclizations are favored using template reactions. Templates are ions, molecules, surfaces etc. that bind and pre-organize compounds, guiding them toward formation of a particular ring size. The crown ethers are often generated in the presence of an alkali metal cation, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catenane
In macromolecular chemistry, a catenane () is a mechanically interlocked molecular architecture consisting of two or more interlocked macrocycles, i.e. a molecule containing two or more intertwined rings. The interlocked rings cannot be separated without breaking the covalent bonds of the macrocycles. They are conceptually related to other mechanically interlocked molecular architectures, such as rotaxanes, molecular knots or molecular Borromean rings. Recently the terminology "mechanical bond" has been coined that describes the connection between the macrocycles of a catenane. Catenanes have been synthesised in two different ways: statistical synthesis and template-directed synthesis. Synthesis There are two primary approaches to the organic synthesis of catenanes. The first is to simply perform a ring-closing reaction with the hope that some of the rings will form around other rings giving the desired catenane product. This so-called "statistical approach" led to the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamic Combinatorial Chemistry
Dynamic combinatorial chemistry (DCC); also known as constitutional dynamic chemistry (CDC) is a method to the generation of new molecules formed by reversible reaction of simple building blocks under thermodynamic control.Schaufelberger, F.; Timmer, B. J. J.; Ramström, O. Principles of Dynamic Covalent Chemistry. In ''Dynamic Covalent Chemistry: Principles, Reactions, and Applications''; Zhang, W.; Jin, Y., Eds.; John Wiley & Sons: Chichester, 2018; Chapter 1, pp 1–30. The library of these reversibly interconverting building blocks is called a dynamic combinatorial library (DCL).Komáromy, D.; Nowak, P.; Otto, S. Dynamic Combinatorial Libraries. In ''Dynamic Covalent Chemistry: Principles, Reactions, and Applications''; Zhang, W.; Jin, Y., Eds.; John Wiley & Sons: Chichester, 2018; Chapter 2, pp 31–119.Lehn, J.-M.; Ramström, O. Generation and screening of a dynamic combinatorial library. PCT. Int. Appl. WO 20010164605, 2001. All constituents in a DCL are in equilibrium, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamic Covalent Chemistry
Dynamic covalent chemistry (DCvC) is a synthetic strategy employed by chemists to make complex supramolecular assemblies from discrete molecular building blocks. DCvC has allowed access to complex assemblies such as covalent organic frameworks, molecular knots, polymers, and novel macrocycles. Not to be confused with dynamic combinatorial chemistry, DCvC concerns only covalent bonding interactions. As such, it only encompasses a subset of supramolecular chemistries. The underlying idea is that rapid equilibration allows the coexistence of a variety of different species among which molecules can be selected with desired chemical, pharmaceutical and biological properties. For instance, the addition of a proper template will shift the equilibrium toward the component that forms the complex of higher stability (''thermodynamic template effect''). After the new equilibrium is established, the reaction conditions are modified to stop equilibration. The optimal binder for the templ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Marie Lehn
Jean-Marie Lehn (born 30 September 1939) is a French chemist. He received the Nobel Prize in Chemistry together with Donald Cram and Charles Pedersen in 1987 for his synthesis of cryptands. Lehn was an early innovator in the field of supramolecular chemistry, i.e., the chemistry of host–guest molecular assemblies created by intermolecular interactions, and continues to innovate in this field. his group has published 790 peer-reviewed articles in chemistry literature. Biography Early years Lehn was born in Rosheim, Alsace, France to Pierre and Marie Lehn. He is of Alsatian German descent. His father was a baker, but because of his interest in music, he later became the city organist. Lehn also studied music, saying that it became his major interest after science. He has continued to play the organ throughout his professional career as a scientist. His high school studies in Obernai, from 1950 to 1957, included Latin, Greek, German, and English languages, French literatur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Host Guest Complex Porphyrin Sanders AngewChemIntEdEngl 1995 1096
A host is a person responsible for guests at an event or for providing hospitality during it. Host may also refer to: Places * Host, Pennsylvania, a village in Berks County People *Jim Host (born 1937), American businessman * Michel Host (1942–2021), French writer *"Host", an author abbreviation in botany for Nicolaus Thomas Host Arts, entertainment, and media Fictional entities * Hosts (''World of Darkness''), fictional characters in game ''Werewolf: The Forsaken'' *Hosts, alien invaders and overlords in the TV series ''Colony'' * Armies and hosts of Middle-earth warfare, fictional entities in J.R.R. Tolkien's works * Avenging Host, a group of characters in Marvel Comics' ''Earth X'' series of comic books * Rutan Host, fictional aliens from ''Doctor Who'' Film * ''Host'' (film), a 2020 horror film directed by Rob Savage Literature *''Host'', the third novel in the Rogue Mage series by Faith Hunter *''Host'', a 1993 book by Peter James * ''Hosts'' (novel), a 2001 b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porphyrin
Porphyrins ( ) are a group of heterocyclic macrocycle organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH−). The parent of porphyrin is porphine, a rare chemical compound of exclusively theoretical interest. Substituted porphines are called porphyrins. With a total of 26 π-electrons, of which 18 π-electrons form a planar, continuous cycle, the porphyrin ring structure is often described as aromatic. One result of the large conjugated system is that porphyrins typically absorb strongly in the visible region of the electromagnetic spectrum, i.e. they are deeply colored. The name "porphyrin" derives from the Greek word πορφύρα (''porphyra''), meaning ''purple''. Complexes of porphyrins Concomitant with the displacement of two N-''H'' protons, porphyrins bind metal ions in the N4 "pocket". The metal ion usually has a charge of 2+ or 3+. A schematic equation for these syntheses is shown: :H2porp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Assessment Exercise
The Research Assessment Exercise (RAE) was an exercise undertaken approximately every five years on behalf of the four UK higher education funding councils ( HEFCE, SHEFC, HEFCW, DELNI) to evaluate the quality of research undertaken by British higher education institutions. RAE submissions from each subject area (or ''unit of assessment'') are given a rank by a subject specialist peer review panel. The rankings are used to inform the allocation of quality weighted research funding (QR) each higher education institution receives from their national funding council. Previous RAEs took place in 1986, 1989, 1992, 1996 and 2001. The most recent results were published in December 2008. It was replaced by the Research Excellence Framework (REF) in 2014. Various media have produced league tables of institutions and disciplines based on the 2008 RAE results. Different methodologies lead to similar but non-identical rankings. History The first exercise of assessing of research in higher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Postdoctoral Research
A postdoctoral fellow, postdoctoral researcher, or simply postdoc, is a person professionally conducting research after the completion of their doctoral studies (typically a PhD). The ultimate goal of a postdoctoral research position is to pursue additional research, training, or teaching in order to have better skills to pursue a career in academia, research, or any other field. Postdocs often, but not always, have a temporary academic appointment, sometimes in preparation for an academic faculty position. They continue their studies or carry out research and further increase expertise in a specialist subject, including integrating a team and acquiring novel skills and research methods. Postdoctoral research is often considered essential while advancing the scholarly mission of the host institution; it is expected to produce relevant publications in peer-reviewed academic journals or conferences. In some countries, postdoctoral research may lead to further formal qualificati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christ's College, Cambridge
Christ's College is a constituent college of the University of Cambridge. The college includes the Master, the Fellows of the College, and about 450 undergraduate and 170 graduate students. The college was founded by William Byngham in 1437 as God's House. In 1505, the college was granted a new royal charter, was given a substantial endowment by Lady Margaret Beaufort, and changed its name to Christ's College, becoming the twelfth of the Cambridge colleges to be founded in its current form. Alumni of the college include some of Cambridge University’s most famous members, including Charles Darwin and John Milton. Within Cambridge, Christ's has a reputation for high academic standards. It has averaged 1st place on the Tompkins Table from 1980 to 2006 and third place from 2006 to 2013, returning to first place in 2018, 2019 and 2022. Simon McDonald is the college's current Master. Robert Evans is the chaplain; he was ordained in the Church of England. History Christ's Colleg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
