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Correction to "A Luminescent and Biocompatible PhotoCORM".

The photoCORM fac-[Re(bpy)(CO)3(thp)](CF3SO3) (1, bpy = 2,2’-bipyridine, thp = tris(hydroxymethyl)phosphine) was prepared as originally described. NMR and elemental analysis were performed on 1 to provide complete characterization, and these data have been added to the attached revised Supporting Information. The photoluminescence (PL) from photoproduct 2 was not reproducible. Thus, statements in the Abstract and elsewhere that photoproduct 2 is luminescent are not correct. The residual PL upon photolysis of 1 apparent in Fig. 6 (bottom) was likely due an impurity produced during synthesis/purification, a probable candidate being fac-[Re(CO)3(bpy)(OH2)](OTf) (A), formed from fac-[Re(CO)3(bpy)(THF)](OTf), the starting material for 1. A was independently prepared and characterized (evidenced by HNMR, IR and crystal structure). and shown to have an absorption spectrum close to that of 1 and to exhibit weak luminescence at ~580 nm as initially reported for 2. A revised Fig. 4 showing the PL from 1 only is shown here, and Fig. S-1 has been replaced in the revised Supporting Information to show the excitation spectrum of 1 only. These corrections do not change the conclusion of the published communication that photoCORM 1 serves as a biocompatible, imageable reporter using PL to indicate the location of CO delivery in cellular media.