The AC S Symposium Series was first published in 1974 to pro￾vide a mechanism for publishing symposia quickly in book form. The
purpose of the series is to publish timely, comprehensive books de￾veloped from AC S sponsored symposia based on current scientific
research. Occasion-ally, books are developed from symposia sponsored
by other organizations when the topic is of keen interest to the chem￾istry audience.
Before agreeing to publish a book, the proposed table of con￾tents is reviewed for appropriate and comprehensive coverage and for
interest to the audience. Some papers may be excluded to better focus
the book; others may be added to provide comprehensiveness. When
appropriate, overview or introductory chapters are added. Drafts of
chapters are peer-reviewed prior to final acceptance or rejection, and
manuscripts are prepared in camera-ready format.
A s a rule, only original research papers and original review
papers are included in the volumes. Verbatim reproductions of previ￾ously published papers are not accepted