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ARL Spectral Fitting as an Application to Augment Spectral Data via Franck-Condon Lineshape Analysis and Color Analysis
Published on: August 19, 2021
Dual phosphorescent emissions from conformers of iridium complex rotors
Yu-Ting Hsu1, Chandni Bhagani1, Juan A Aguilar1
1Department of Chemistry, Durham University, South Rd, Durham, DH1 3LE, UK. ross.davidson@durham.ac.uk.
Abstract:
The chiral iridium rotors Ir(ppy)2(pyX)Cl (X = CC-SiR3, R = alkyl) remarkably contain two distinct rotational conformers in the ground (S0) and excited (T1) states that can be detected by NMR and emission measurements respectively at variable temperatures. The observed phosphorescent emissions, vibronic (involving L = ppy) and broad (L = pyX), arise from different triplet ligand to metal charge transfers from the two rotational conformers at distinct 3MLCT excited states. Both conformers exist in these Ir(ppy)2(pyX)Cl rotors due to the electron-withdrawing, conjugated substituent X.
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