Charles J. Pedersen
Encyclopedia
Charles John Pedersen was an American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 organic chemist
Organic chemistry
Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation of carbon-based compounds, hydrocarbons, and their derivatives...

 best known for describing methods of synthesizing crown ether
Crown ether
Crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ethers are oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e., -CH2CH2O-. Important members of this series are the tetramer , the pentamer , and the hexamer...

s. He shared the Nobel Prize in Chemistry
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 outstanding contributions in chemistry, physics, literature,...

 in 1987 with Donald J. Cram
Donald J. Cram
Donald James Cram was an American chemist who shared the 1987 Nobel Prize in Chemistry with Jean-Marie Lehn and Charles J...

 and Jean-Marie Lehn
Jean-Marie Lehn
Jean-Marie Lehn is a French chemist. He received the Nobel Prize together with Donald Cram and Charles Pedersen in 1987 for his work in Chemistry, particularly his synthesis of the cryptands...

. His Japanese
Japanese name
in modern times usually consist of a family name , followed by a given name. "Middle names" are not generally used.Japanese names are usually written in kanji, which are characters of usually Chinese origin in Japanese pronunciation...

 first name was .

Pedersen was born in Busan
Busan
Busan , formerly spelled Pusan is South Korea's second largest metropolis after Seoul, with a population of around 3.6 million. The Metropolitan area population is 4,399,515 as of 2010. It is the largest port city in South Korea and the fifth largest port in the world...

, on the coast of south-eastern Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

, then under the rule of Japan, to a Norwegian father and a Japanese
Japanese people
The are an ethnic group originating in the Japanese archipelago and are the predominant ethnic group of Japan. Worldwide, approximately 130 million people are of Japanese descent; of these, approximately 127 million are residents of Japan. People of Japanese ancestry who live in other countries...

 mother, in 1904. He moved to Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 with his family at an early age and went to an international school
International school
An International school is loosely defined as a school that promotes international education, in an international environment, either by adopting an international curriculum such as that of the International Baccalaureate or Cambridge International Examinations, or by following a national...

, called Saint Joseph College
Saint Joseph College, Yokohama
was a Catholic international school, located in Naka-ku, Yokohama, Japan. It was established in 1901 and closed in June 2000. It served kindergarten, elementary education and secondary education primarily to the expatriate community in Yokohama.-Alumni:...

 in Yokohama
Yokohama
is the capital city of Kanagawa Prefecture and the second largest city in Japan by population after Tokyo and most populous municipality of Japan. It lies on Tokyo Bay, south of Tokyo, in the Kantō region of the main island of Honshu...

, Japan. He came to the United States in 1922 to study chemical engineering
Chemical engineering
Chemical engineering is the branch of engineering that deals with physical science , and life sciences with mathematics and economics, to the process of converting raw materials or chemicals into more useful or valuable forms...

 at the University of Dayton
University of Dayton
The University of Dayton is a private Roman Catholic university operated by the Society of Mary located in Dayton, Ohio...

 in Ohio
Ohio
Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

. After receiving a bachelor's degree
Bachelor's degree
A bachelor's degree is usually an academic degree awarded for an undergraduate course or major that generally lasts for three or four years, but can range anywhere from two to six years depending on the region of the world...

, he went to the Massachusetts Institute of Technology
Massachusetts Institute of Technology
The Massachusetts Institute of Technology is a private research university located in Cambridge, Massachusetts. MIT has five schools and one college, containing a total of 32 academic departments, with a strong emphasis on scientific and technological education and research.Founded in 1861 in...

 where he received a master's degree
Master's degree
A master's is an academic degree granted to individuals who have undergone study demonstrating a mastery or high-order overview of a specific field of study or area of professional practice...

 in organic chemistry. Although his professors encouraged him to pursue a Ph.D.
Doctor of Philosophy
Doctor of Philosophy, abbreviated as Ph.D., PhD, D.Phil., or DPhil , in English-speaking countries, is a postgraduate academic degree awarded by universities...

 at MIT, Pedersen decided to start his career instead, partially because he no longer wanted to be supported by his father. He is one of the few people to win a Nobel prize in the sciences without having a Ph.D.

In 1927, Pedersen began working for DuPont
DuPont
E. I. du Pont de Nemours and Company , commonly referred to as DuPont, is an American chemical company that was founded in July 1802 as a gunpowder mill by Eleuthère Irénée du Pont. DuPont was the world's third largest chemical company based on market capitalization and ninth based on revenue in 2009...

 where he would remain for the next 42 years, retiring at the age of 65. At DuPont, his work resulted in 25 papers and 65 patents. In 1967 he published two works that are now considered classics; they describe the methods of synthesizing crown ether
Crown ether
Crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ethers are oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e., -CH2CH2O-. Important members of this series are the tetramer , the pentamer , and the hexamer...

s (cyclic polyethers). The donut-shaped molecules were the first in a series of extraordinary compounds that form stable structures with alkali metal
Alkali metal
The alkali metals are a series of chemical elements in the periodic table. In the modern IUPAC nomenclature, the alkali metals comprise the group 1 elements, along with hydrogen. The alkali metals are lithium , sodium , potassium , rubidium , caesium , and francium...

 ion
Ion
An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass between electrodes in a...

s. In 1987 he shared the Nobel Prize in Chemistry with Donald Cram and Jean-Marie Lehn
Jean-Marie Lehn
Jean-Marie Lehn is a French chemist. He received the Nobel Prize together with Donald Cram and Charles Pedersen in 1987 for his work in Chemistry, particularly his synthesis of the cryptands...

 for his work in this area; Cram and Lehn expanded upon his original discoveries.

Pedersen was diagnosed with myeloma in 1983, and though he was becoming increasingly frail, he traveled to Stockholm
Stockholm
Stockholm is the capital and the largest city of Sweden and constitutes the most populated urban area in Scandinavia. Stockholm is the most populous city in Sweden, with a population of 851,155 in the municipality , 1.37 million in the urban area , and around 2.1 million in the metropolitan area...

 to accept the Nobel Prize in late 1987. Shortly thereafter, he was awarded a medal for excellence by the du Pont Research Fellows. He died on 26 October 1989 in Salem, New Jersey
Salem, New Jersey
Salem is a city in Salem County, New Jersey, United States. As of the United States 2010 Census, the city population was 5,146. It is the county seat of Salem County, the most rural county in the state of New Jersey. The name Salem is related to the Hebrew word shalom, meaning "peace".The town and...

.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK