Access seems to be restored for ACS Journals as of Tue: 1/14/14, 4pm.
ACS (American Chemical Society) journals are down as of 1/14/14 1pm. ACS knows about it and is working to fix the problem.
The journal web pages appear fine, but when you try to get an article by clicking on the PDF, you are told:
“Your current credentials do not allow retrieval of the full text.”