Laser Wavelength Specific Photodissociation of Biological Molecules in Supersonic Beams

在分析和表面化学支持的研究中， 在化学系的程序，教授卢布曼和他的 学生将学习离子的碎裂， 激光光激发 通过调整波长的 光，不同数量的能量将被赋予 分子，从而允许选定的键组断裂。 的 长期目标是开发方法， 相似生物分子的差异检测。 %%% 在分析和表面化学支持的研究中， 在化学部的计划，Lubman的小组将 研究气相离子的竞争动力学 近阈值光激发允许的碎片。 在 一个无碰撞的环境，内部重新分配 吸收的能量允许选定的键的子集断裂。 虽然不能以打破具体的债券为目标，但希望 在动力学上， 对于特定的激励条件。

In research supported by the Analytical and Surface Chemistry Program in the Chemistry Division, Professor Lubman and his students will study the fragmentation of ions subjected to laser photoexcitation. By adjusting the wavelength of the light, varying amounts of energy will be imparted to the molecules, thus allowing selected sets of bonds to break. The long term goal is to develop methods which will allow differential detection of similar biomolecules. %%% In research supported by the Analytical and Surface Chemistry Program in the Chemistry Division, Lubman's group will investigate the competitive kinetics of gas phase ion fragmentation permitted by near-threshold photoexcitation. In a collisionless environment, internal redistribution of absorbed energy allows selected subsets of bonds to break. While one cannot target breaking of specific bonds, it is hoped that characteristic sets of bonds can be kinetically preferred for particular excitation conditions.