Unprecedented Strong Panchromic Absorption from Proton‐Switchable Iridium(III) Azoimidazolate Complexes
作者:Adam F. Henwood、Yue Hu、Muhammad T. Sajjad、Gopala K. V. V. Thalluri、Sanjay S. Ghosh、David B. Cordes、Alexandra M. Z. Slawin、Ifor D. W. Samuel、Neil Robertson、Eli Zysman‐Colman
DOI:10.1002/chem.201503546
日期:2015.12.21
parameters of the two complexes. The strongly absorbing nature of the free diazoimidazole ligand is enhanced in these iridiumcomplexes, with the protonated cationic complex demonstrating extraordinarily strong panchromic absorption up to 700 nm. The absorption profile of the deprotonated neutral complex is blueshifted by about 100 nm and thus the interconversion between the two complexes as a function of
Ruthenium Dyes with Azo Ligands: Light Harvesting, Excited‐State Properties and Relevance to Dye‐Sensitised Solar Cells
作者:Yue Hu、Irene Sanchez‐Molina、Saif A. Haque、Neil Robertson
DOI:10.1002/ejic.201501071
日期:2015.12
synthesised, with different azoligands as additional chromophore. The dyes are all intensely colored due to MLCT and ILCT transitions in the visible region. The photophysical study of the dyes, carried out by UV/Vis absorption and emission spectroscopy, showed unusual features such as intense solvatochromism and solvent-dependent extinction coefficients. The energies of these excited states have been tuned