Pedersen , Charles
(1904–1989) American chemist
The son of Norwegian parents, Pedersen was born in Pusan, Korea, and moved with his family to America in the 1920s. He became a naturalized American citizen in 1953. Pedersen was educated at the Massachusetts Institute of Technology and, for most of his career up to his retirement in 1969, he worked as a research chemist for DuPont.
While working on synthetic rubber, Pedersen noted that one of his materials had been contaminated. He investigated the impurity and found that it had a ring structure of 12 carbon and 6 oxygen atoms, with a pair of carbon atoms between each oxygen. Such structures are known as cyclic polyethers. Normally, organic solvents such as ether and benzene will not dissolve sodium hydroxide. Yet Pedersen found that caustic soda did dissolve in his new compound, with the sodium ions binding loosely to the oxygen atoms of the ether. To accomplish this the polyether formed a nonplanar ring with a crownlike structure, with the sodium ions sitting neatly in the center. For this reason, Pedersen named what turned out to be a new class of compounds ‘crown ethers’. Although he made his first observations in 1964, DuPont delayed publication until 1967.
The implications of Pedersen's work were varied and important. If one crown ether could coordinate sodium ions, it was likely that others of different ring size would be able to bind to other metal ions. Crown ethers could therefore be used as a simple means of gathering specific ions from aqueous solutions.
Other chemists were also quick to see the implications of Pedersen's work and it was with two of these, Jean Lehn and Donald Cram, that he shared the 1987 Nobel Prize for chemistry.

Scientists. . 2011.

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  • Pedersen, Charles J. — ▪ American chemist in full  Charles John Pedersen  born Oct. 3, 1904, Pusan, Korea died Oct. 26, 1989, Salem, N.J., U.S.       American chemist who, along with Jean Marie Lehn (Lehn, Jean Marie) and Donald J. Cram (Cram, Donald J.), was awarded… …   Universalium

  • Pedersen, Charles J. — ► (1904 89) Científico estadounidense. Fue premio Nobel de Química en 1987, compartido con D. J. Cram y Jean Marie Lehn, por sus trabajos de síntesis de moléculas …   Enciclopedia Universal

  • Pedersen — Charles …   Scientists

  • Charles John Pedersen — (* 3. Oktober 1904 in Busan, Korea; † 26. Oktober 1989 in Salem, New Jersey) war ein amerikanischer Chemiker bei DuPont. Er erhielt 1987 gemeinsam mit Donald J. Cram und Jean Marie Lehn den Nobelpreis für Chemie „für die Entwicklung und… …   Deutsch Wikipedia

  • Charles J. Pedersen — Charles Pedersen Pour les articles homonymes, voir Pedersen. Charles John Pedersen (3 octobre 1904 – 26 octobre 1989) était un chimiste organique américain renommé pour avoir décrit des méthodes de synthèse des éthers couronne. Il reçut le prix… …   Wikipédia en Français

  • Charles John Pedersen — Charles Pedersen Pour les articles homonymes, voir Pedersen. Charles John Pedersen (3 octobre 1904 – 26 octobre 1989) était un chimiste organique américain renommé pour avoir décrit des méthodes de synthèse des éthers couronne. Il reçut le prix… …   Wikipédia en Français

  • Pedersen — Pedersen, Charles J …   Enciclopedia Universal

  • Charles J. Pedersen — Crown ether coordinating a potassium ion Charles John Pedersen (October 3, 1904 – October 26, 1989) was an American organic chemist best known for describing methods of synthesizing crown ethers. He shared the Nobel Prize in Chemistry in 1987… …   Wikipedia

  • Charles Pedersen — Pour les articles homonymes, voir Pedersen. Charles John Pedersen (3 octobre 1904 – 26 octobre 1989) était un chimiste organique américain renommé pour avoir décrit des méthodes de synthèse des éthers couronne. Jean Marie Lehn, Donald J. Cram et… …   Wikipédia en Français

  • Charles Pedersen — Charles John Pedersen (* 3. Oktober 1904 in Busan, Korea; † 26. Oktober 1989 in Salem, New Jersey) war ein amerikanischer Chemiker bei DuPont. Er erhielt 1987 gemeinsam mit Donald J. Cram und Jean Marie Lehn den Nobelpreis für Chemie „für die… …   Deutsch Wikipedia

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