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Exploding Nanodroplets: Applications to Studies of Ion Solvation, Cluster Phase Chemistry, and Frontier Studies in Proteomics

등록일
2005년 8월 29일 14시 27분 42초
접수번호
1023
발표코드
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발표시간
금 14시 : 30분
발표형식
심포지엄
발표분야
물리화학 - 외계의 화학종 (Chemical Species in Outer Space)
저자 및
공동저자
J. L. Beauchamp
California Institute of Technology, Division of Chemistry and Chemical Engineering and Beckman Institute, U.S.A.,
We have studied the life history of a charged droplet, from formation at the ESI tip to the completely desolvated ions that are eventually formed. These studies have led to the development of a new method for the controlled extraction of desolvated ions from neutral droplets in a process called field induced droplet ionization (FIDI). This “soft sampling” methodology facilitates observation of molecular clusters and non-covalent complexes. Of particular interest are clusters that have unique stability, such as the homochiral serine octamer, and the controlled covalent coupling within molecular clusters, the formation of ATP from anionic salt clusters of AMP, the selective phosphorylation of serine in peptides, and the processing of organic atmospheric aerosols being examples. For applications in proteomics, we have identified reagents which can recognize and bind to specific amino acids in peptides and proteins, that has led to the development of novel biomimetic reagents.

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