REVIEW ARTICLE: The temperature-jump technique for the study of fast reactions in solution

REVIEW ARTICLE: The temperature-jump technique for the study of fast reactions in solution
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评论文章:用于研究溶液中快速反应的温度跳跃技术

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发表时间:
1983
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通讯作者:
J. E. Crooks
J. E. Crooks
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文献类型:
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作者:
J. E. Crooks

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温度跳变技术是测量溶液中化学反应速率的最广泛的方法之一,这些化学反应非常快,以至于试剂一混合反应就完成了。反应混合物被允许达到平衡,然后平衡被焦耳、微波或激光加热产生的快速升温所扰动。系统适应新平衡的速率是通过观察吸收或发出荧光的光的强度或电导率来监测的。速率常数快到理论极限1010 dm3 mol-1 s-1是可测量的。本文考虑了跳温装置性能的局限性,并给出了所研究系统的实例。
The temperature-jump technique is one of the most widely used methods for measuring the rates of those chemical reactions in solution which are so fast that reaction is complete as soon as the reagents are mixed. The reaction mixture is allowed to come to equilibrium, and then the equilibrium is perturbed by a rapid temperature rise, produced by Joule, microwave or laser heating. The rate at which the system adjusts to the new equilibrium is monitored by observation of the intensity of light absorbed or fluoresced, or by the electrical conductivity. Rate constants as fast as the theoretical limit of 1010 dm3 mol-1 s-1 are measurable. The review considers the limitations on the performance of temperature-jump apparatus and gives examples of systems studied.