Rudolph Arthur Marcus (born July 21, 1923) is a Canadian-born American chemist who received the 1992

Nobel Prize in Chemistry The Nobel Prize in Chemistry () is awarded annually by the Royal Swedish Academy of Sciences to scientists in the various fields of chemistry. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895, awarded for outst ...

Rudolph A. Marcus: The Nobel Prize in Chemistry 1992
/ref> "for his contributions to the theory of

electron transfer Electron transfer (ET) occurs when an electron relocates from an atom, ion, or molecule, to another such chemical entity. ET describes the mechanism by which electrons are transferred in redox reactions. Electrochemical processes are ET reactio ...

reactions in chemical systems". Marcus theory, named after him, provides a

thermodynamic Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of th ...

and kinetic framework for describing one electron outer-sphere electron transfer. He is a professor at

Caltech The California Institute of Technology (branded as Caltech) is a private university, private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small g ...

Nanyang Technological University Nanyang Technological University (NTU) is a public research university in Singapore. Founded in 1981, it is also the second oldest autonomous university in the country. The university is organised across numerous colleges and schools, includi ...

Singapore Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...

and a member of the

International Academy of Quantum Molecular Science The International Academy of Quantum Molecular Science (IAQMS) is an international scientific learned society covering all applications of quantum theory to chemistry and chemical physics. It was created in Menton in 1967. The founding members we ...

Education and early life

Marcus was born in

Montreal Montreal is the List of towns in Quebec, largest city in the Provinces and territories of Canada, province of Quebec, the List of the largest municipalities in Canada by population, second-largest in Canada, and the List of North American cit ...

Quebec Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...

, the son of Esther (born Cohen) and Myer Marcus. His father was born in

New York New York most commonly refers to: * New York (state), a state in the northeastern United States * New York City, the most populous city in the United States, located in the state of New York New York may also refer to: Places United Kingdom * ...

and his mother was born in

England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...

. His family background is from

Ukmergė Ukmergė (; previously ''Vilkmergė''; ) is a city in Vilnius County, Lithuania, located northwest of Vilnius. It is the administrative center of the Ukmergė District Municipality. Ukmergė (Vilkmergė) was mentioned for the first time as a ...

(

Lithuania Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea, bordered by Latvia to the north, Belarus to the east and south, P ...

).Marcus, Rudolph A. Interview by Shirley K. Cohen. Pasadena, California, December 1, 7, and 14, 1993. Oral History Project, California Institute of Technology Archives. Retrieved 2020 from the World Wide Web: http://resolver.caltech.edu/CaltechOH:OH_Marcus_R He is

Jewish Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...

and grew up mostly in a Jewish neighborhood in Montreal but also spent some of his childhood in

Detroit Detroit ( , ) is the List of municipalities in Michigan, most populous city in the U.S. state of Michigan. It is situated on the bank of the Detroit River across from Windsor, Ontario. It had a population of 639,111 at the 2020 United State ...

, United States. His interest in the sciences began at a young age. He excelled at mathematics at

Baron Byng High School Baron Byng High School was an English language, English-language State school, public high school on Saint Urbain Street in Montreal, Quebec, opened by Governor General of Canada Julian Byng, 1st Viscount Byng of Vimy in 1921. The school was atte ...

. He then studied at

McGill University McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...

under Carl A. Winkler, who had studied under

Cyril Hinshelwood Sir Cyril Norman Hinshelwood (19 June 1897 – 9 October 1967) was a British physical chemist and expert in chemical kinetics. His work in reaction mechanisms earned the 1956 Nobel Prize in chemistry. Education Born in London, his parents w ...

at the

University of Oxford The University of Oxford is a collegiate university, collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the List of oldest un ...

. At McGill, Marcus took more math courses than an average chemistry student, which would later aid him in creating his theory on electron transfer. Marcus earned a

B.Sc. A Bachelor of Science (BS, BSc, B.S., B.Sc., SB, or ScB; from the Latin ') is a bachelor's degree that is awarded for programs that generally last three to five years. The first university to admit a student to the degree of Bachelor of Scienc ...

in 1943 and a Ph.D. in 1946, both from McGill University. In 1958, he became a

naturalized citizen Naturalization (or naturalisation) is the legal act or process by which a non-national of a country acquires the nationality of that country after birth. The definition of naturalization by the International Organization for Migration of the ...

of the United States.

Career and research

After graduating, in 1946, he took postdoctoral positions first at the

National Research Council (Canada) The National Research Council Canada (NRC; ) is the primary national agency of the Government of Canada dedicated to science and technology research and development. It is the largest federal research and development organization in Canada. Th ...

, followed by the

University of North Carolina The University of North Carolina is the Public university, public university system for the state of North Carolina. Overseeing the state's 16 public universities and the North Carolina School of Science and Mathematics, it is commonly referre ...

. He received his first faculty appointment at the

Polytechnic Institute of Brooklyn The New York University Tandon School of Engineering (commonly referred to as Tandon) is the engineering and applied sciences school of New York University. Tandon is the second oldest private engineering and technology school in the United St ...

. In 1952, at the

, he developed Rice–Ramsperger–Kassel–Marcus (RRKM) theory by combining the former RRK theory with the

transition state theory In chemistry, transition state theory (TST) explains the reaction rates of elementary chemical reactions. The theory assumes a special type of chemical equilibrium (quasi-equilibrium) between reactants and activated transition state complexes. ...

. In 1964, he taught at the

University of Illinois The University of Illinois Urbana-Champaign (UIUC, U of I, Illinois, or University of Illinois) is a public university, public land-grant university, land-grant research university in the Champaign–Urbana metropolitan area, Illinois, United ...

. His approach to solving a problem is to "go full tilt." Marcus moved to the

California Institute of Technology The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes ...

in 1978.

Marcus theory of electron transfer

Electron transfer Electron transfer (ET) occurs when an electron relocates from an atom, ion, or molecule, to another such chemical entity. ET describes the mechanism by which electrons are transferred in redox reactions. Electrochemical processes are ET reactio ...

is one of the simplest forms of a chemical reaction. It consists of one

outer-sphere electron transfer Outer sphere refers to an electron transfer (ET) event that occurs between chemical species that remain separate and intact before, during, and after the ET event. In contrast, for inner sphere electron transfer the participating redox sites under ...

between substances of the same atomic structure likewise to Marcus’s studies between divalent and trivalent iron ions. Electron transfer may be one of the most basic forms of chemical reaction but without it life cannot exist. Electron transfer is used in all

respiratory The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies gr ...

functions as well as

photosynthesis Photosynthesis ( ) is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their metabo ...

. In the process of

oxidizing Redox ( , , reduction–oxidation or oxidation–reduction) is a type of chemical reaction in which the oxidation states of the reactants change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is ...

food molecules, two hydrogen ions, two electrons, and half an oxygen molecule react to make an

exothermic reaction In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change Δ''H''⚬ is negative." Exothermic reactions usually release heat. The term is often confused with exergonic reaction, which IUPAC define ...

as well as a water molecule: : 2 H⁺ + 2 e⁻ + ½ O₂ → H₂O + heat Because electron transfer is such a broad, common, and essential reaction within nature, Marcus's theory has become vital within the field of chemistry and

biochemistry Biochemistry, or biological chemistry, is the study of chemical processes within and relating to living organisms. A sub-discipline of both chemistry and biology, biochemistry may be divided into three fields: structural biology, enzymology, a ...

. A type of chemical reaction linked to his many studies of electron transfer would be the transfer of an electron between metal ions in different states of oxidation. An example of this type of chemical reaction would be one between a divalent and a trivalent iron ion in an aqueous solution. In Marcus's time chemists were astonished at the slow rate in which this specific reaction took place. This attracted many chemists in the 1950s and is also what began Marcus's interests in electron transfer. Marcus made many studies based on the principles that were found within this chemical reaction, and through his studies was able to elaborate his electron transfer theory. His approach gave way to new experimental programs that contributed to all branches within chemistry and biochemistry. As of his 100th birthday, he is still active doing research.

Honors and awards

Marcus was awarded honorary degrees from the

University of Chicago The University of Chicago (UChicago, Chicago, or UChi) is a Private university, private research university in Chicago, Illinois, United States. Its main campus is in the Hyde Park, Chicago, Hyde Park neighborhood on Chicago's South Side, Chic ...

in 1983, the

University of Gothenburg The University of Gothenburg () is a List of universities in Sweden, university in Sweden's second largest city, Gothenburg. Founded in 1891, the university is the third-oldest of the current List of universities in Sweden#Public universities, S ...

in 1986, the

in 1987,

in 1988, Queen's University in 1993, the

University of New Brunswick The University of New Brunswick (UNB) is a public university with two primary campuses in Fredericton and Saint John, New Brunswick. It is the oldest English language, English-language university in Canada, and among the oldest public universiti ...

in 1993, the

in 1995, the

University of North Carolina at Chapel Hill The University of North Carolina at Chapel Hill (UNC, UNC–Chapel Hill, or simply Carolina) is a public university, public research university in Chapel Hill, North Carolina, United States. Chartered in 1789, the university first began enrolli ...

in 1996, the

Yokohama National University , abbreviated to , or YNU, is a national university located in Yokohama, Kanagawa Prefecture, Japan. Founded in 1876, it became a national university in 1949, and currently comprises five graduate schools and four undergraduate faculties. The ...

in 1996, the

University of Illinois at Urbana–Champaign The University of Illinois Urbana-Champaign (UIUC, U of I, Illinois, or University of Illinois) is a public land-grant research university in the Champaign–Urbana metropolitan area, Illinois, United States. Established in 1867, it is the f ...

in 1997, the

Technion – Israel Institute of Technology The Technion – Israel Institute of Technology is a public university, public research university located in Haifa, Israel. Established in 1912 by Jews under the dominion of the Ottoman Empire, the Technion is the oldest university in the coun ...

in 1998, the

Technical University of Valencia The Polytechnic University of Valencia (; , ), shortened to UPV, is a Spanish university located in Valencia, with a focus on science, technology, and arts. It was founded in 1968 as the Higher Polytechnic School of Valencia and became a univers ...

in 1999,

Northwestern University Northwestern University (NU) is a Private university, private research university in Evanston, Illinois, United States. Established in 1851 to serve the historic Northwest Territory, it is the oldest University charter, chartered university in ...

in 2000, the

University of Waterloo The University of Waterloo (UWaterloo, UW, or Waterloo) is a Public university, public research university located in Waterloo, Ontario, Canada. The main campus is on of land adjacent to uptown Waterloo and Waterloo Park. The university also op ...

in 2002, the

in 2010, the Tumkur University in 2012, the

University of Hyderabad The University of Hyderabad (UoH) is a prestigious public central research university located in Gachibowli, Hyderabad, Telangana, India. Established in 1974, this mostly residential campus has more than 5,000 students and 400 faculty, from ...

in 2012, and the

University of Calgary {{Infobox university , name = University of Calgary , image = University of Calgary coat of arms without motto scroll.svg , image_size = 150px , caption = Coat of arms , former ...

in 2013. In addition, he was awarded an honorary doctorate from the

University of Santiago, Chile The University of Santiago, Chile (Usach) () is one of the oldest public universities in Chile. The institution was born as ''Escuela de Artes y Oficios'' (Spanish: ''School of Arts and Careers'') in 1849 by Ignacy Domeyko, under the government ...

in 2018. Among the awards he received before the

in 1992, Marcus received the Irving Langmuir Prize in Chemical Physics in 1978, the Robinson Award of the

Faraday Michael Faraday (; 22 September 1791 – 25 August 1867) was an English chemist and physicist who contributed to the study of electrochemistry and electromagnetism. His main discoveries include the principles underlying electromagnetic inducti ...

Division of the

Royal Society of Chemistry The Royal Society of Chemistry (RSC) is a learned society and professional association in the United Kingdom with the goal of "advancing the chemistry, chemical sciences". It was formed in 1980 from the amalgamation of the Chemical Society, the ...

in 1982,

Columbia University Columbia University in the City of New York, commonly referred to as Columbia University, is a Private university, private Ivy League research university in New York City. Established in 1754 as King's College on the grounds of Trinity Churc ...

Chandler Award The Chandler Award is presented by the Australian Science Fiction Foundation for "Outstanding Achievement in Australian Science Fiction". It is named in recognition of the contribution that science fiction writer A. Bertram Chandler made to Austral ...

in 1983, the

Wolf Prize in Chemistry The Wolf Prize in Chemistry is awarded annually by the Wolf Foundation in Israel. It is one of the six Wolf Prizes established by the Foundation and awarded since 1978; the others are in Agriculture, Mathematics, Medicine, Physics and Arts. The Wo ...

in 1984-1985, the

Centenary Prize The Centenary Prize is an award granted annually by the United Kingdom-based Royal Society of Chemistry (RSC) to up to three "outstanding chemists, who are also exceptional communicators, from overseas". The prize, established in 1947, and fir ...

, the

Willard Gibbs Award The Willard Gibbs Award, presented by thChicago Sectionof the American Chemical Society, was established in 1910 by William A. Converse (1862–1940), a former Chairman and Secretary of the Chicago Section of the society and named for Professor Jo ...

and the

Peter Debye Award The Peter Debye Award in Physical Chemistry is awarded annually by the American Chemical Society "to encourage and reward outstanding research in physical chemistry". The award is named after Peter Debye and granted without regard to age or natio ...

in 1988, the

National Medal of Science The National Medal of Science is an honor bestowed by the President of the United States to individuals in science and engineering who have made important contributions to the advancement of knowledge in the fields of behavioral science, behavior ...

in 1989,

Ohio State The Ohio State University (Ohio State or OSU) is a public land-grant research university in Columbus, Ohio, United States. A member of the University System of Ohio, it was founded in 1870. It is one of the largest universities by enrollme ...

's William Lloyd Evans Award in 1990, the Theodore William Richards Award (NESACS) in 1990, the Pauling Medal, the Remsen Award and the Edgar Fahs Smith Lecturer in 1991, the Golden Plate Award of the

American Academy of Achievement The American Academy of Achievement, colloquially known as the Academy of Achievement, is a nonprofit educational organization that recognizes some of the highest-achieving people in diverse fields and gives them the opportunity to meet one ano ...

and the Hirschfelder Prize in Theoretical Chemistry in 1993. He also received a professorial fellowship at

University College, Oxford University College, formally The Master and Fellows of the College of the Great Hall of the University commonly called University College in the University of Oxford and colloquially referred to as "Univ", is a Colleges of the University of Oxf ...

, from 1975 to 1976. He was elected to the

National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the ...

in 1970, the

American Academy of Arts and Sciences The American Academy of Arts and Sciences (The Academy) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and other ...

in 1973, the

American Philosophical Society The American Philosophical Society (APS) is an American scholarly organization and learned society founded in 1743 in Philadelphia that promotes knowledge in the humanities and natural sciences through research, professional meetings, publicat ...

in 1990, received honorary membership in the

in 1991, and in the

Royal Society of Canada The Royal Society of Canada (RSC; , SRC), also known as the Academies of Arts, Humanities, and Sciences of Canada (French: ''Académies des arts, des lettres et des sciences du Canada''), is the senior national, bilingual council of distinguishe ...

in 1993. He was elected a Foreign Member of the Royal Society (ForMemRS) in 1987. In 2019, he was awarded with the Fray International Sustainability award at SIPS 2019 by FLOGEN Star Outreach.

References

External links

* *
Marcus Rudolph
Nobel Luminaries Project,

The Museum of the Jewish People at Beit Hatfutsot ''The'' is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The ...