Azobenzene-Appended Bis-Cyclometalated Iridium(III) Bipyridyl Complexes
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https://figshare.com/articles/dataset/Azobenzene_Appended_Bis_Cyclometalated_Iridium_III_Bipyridyl_Complexes/2100010
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资源简介：
A new
synthetic route toward photochromic azobenzene-appended bipyridyl
ligands has been developed, and 20 new cationic iridium(III) bis-cyclometalated
complexes containing up to four azobenzene fragments on their structure
have been synthesized and characterized electronically and spectroscopically.
These compounds incorporate photochromic azobenzene units in their
neutral pyridyl ligands 1–5, and
in four of them azobenzenes have been also introduced a posteriori on their phenylpyridyl ligands by palladium-catalyzed cross-coupling.
UV–vis-monitored light-triggered trans-to-cis isomerization of the azobenzene-appended ligands revealed
a strong inhibition of this process upon coordination to the d6-metal ion. TD-DTF calculations revealed that this inhibition
could be a consequence of a metal to ligand charge transfer relaxation
process.
创建时间：
2016-02-12
