You might be interested in
Photographic Sensitivity:
Theory and Mechanisms by Tadaaki Tani of Fuji. It's one of the more recent published works. I have a copy back in the UK, if there's any specific info you'd like.
A lot of the standard texts such as
The Theory of the Photographic Process edited by James (latest is 4th edition, pub '72, I think, earlier ones were by 3rd ed by James and Mees and 1st & 2nd eds by Mees. phew) include good overviews of the whole emulsion chemistry thing. I don't understand a word of them, of course, but the diagrams make pretty embroidery patterns.
Later edit: There's a condensed version of the above book, by James and Higgins:
Fundamentals of Photographic Theory.
Best,
Helen