Contacts:
Supervisor(s):
Prof. Lorenzo Di Bari
Title of the PhD project:
Chiral lanthanide complexes with strong CPL activity for chiral OLEDs
Abstract of the PhD project:
Circularly polarised light (CPL) is paramount to many current and future technologies. Devices which emit such polarised light have great importance for emerging technologies such as, stereoscopic [3D] displays, enhanced bandwidth optical communication and in vivo imaging. Synthesis of novel luminescent Ln(III) complexes incorporating chiral ligands to introduce the desired circular polarisation will be explored, accompanied with computational studies in order to design the most suitable ligands. Above all, the chiroptical properties, such as electronic and vibrational circular dichroism (ECD, VCD) and most importantly circularly polarised luminescence (CPL) will be measured. The effectiveness of such complexes will be evaluated by the brightness, newly adapted for comparing CPL (BCPL). BCPL consists of the product of the emission quantum yield (φ), extinction coefficient (ελ) at the excitation wavelength (λ), and the dissymmetry factor (glum). The BCPL value will allow for quick and efficient comparison of the emissive complexes.
Publications:
• A. Guha, T. J. Kalkus, T. B. H. Schroeder, O. G. Willis, C. Rader, A. Ianiro and M. Mayer, Powering Electronic Devices from Salt Gradients in AA‐Battery‐Sized Stacks of Hydrogel‐Infused Paper, Advanced Materials, 2021, 33, 2101757.
• O. G. Willis, F. Zinna, G. Pescitelli, C. Micheletti and L. Di Bari, Remarkable near-infrared chiroptical properties of chiral Yb, Tm and Er complexes, Dalton Transactions, 2022, 51, 518–523.
• E. Cavalli, C. Nardon, O. G. Willis, F. Zinna, L. Di Bari, S. Mizzoni, S. Ruggieri, S. C. Gaglio, M. Perduca, C. Zaccone, A. Romeo and F. Piccinelli, Near Infared Circularly Polarized Luminescence From Water Stable Organic Nanoparticles Containing a Chiral Yb(III) Complex, Chemistry – A European Journal, 2022, 28, e202200574.
• O. G. Willis, F. Petri, G. Pescitelli, A. Pucci, E. Cavalli, A. Mandoli, F. Zinna and L. Di Bari, Efficient 1400–1600 nm Circularly Polarized Luminescence from a Tuned Chiral Erbium Complex, Angewandte Chemie International Edition, 2022, 61, e202208326.
Oral communications at conferences:
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Poster communications at conferences:
• O. G. Willis, F. Zinna, L. Di Bari. Structure based effects on near-infrared chiroptical properties of lanthanide complexes; CFF 2021 - Chemistry for the Future International Conference; Università di Pisa; Dipartimento di Chimica e Chimica Industriale, Via Giuseppe Moruzzi, 13 - Pisa (Italy), June 30 - July 2, 2021
• O. G. Willis, F.Petri, G.Pescitelli, C. Micheletti, A. Mandoli, F. Zinna, L. Di Bari. Remarkable near-Infrared chiroptical properties of chiral Yb, Tm and Er complexes; CS2FE 2022 - Chemistry Summer School on f-elements; Aussois (France), June 12 - June 17, 2022.
• O. G. Willis, F.Petri, G.Pescitelli, C. Micheletti, A. Mandoli, F. Zinna, L. Di Bari. Remarkable near-Infrared chiroptical properties of chiral Yb, Tm and Er complexes; CFF 2022 - Chemistry for the Future International Conference; Università di Pisa; Dipartimento di Chimica e Chimica Industriale, Via Giuseppe Moruzzi, 13 – Pisa (Italy), June 29 - July 1, 2022.
• O. G. Willis, F.Petri, G.Pescitelli, A. Pucci, E. Cavalli, A. Mandoli, F. Zinna, L. Di Bari. Efficient 1400– 1600 nm Circularly Polarized Luminescence from a Tuned Chiral Erbium Complex; CD2022 - 18th International Conference on Chiroptical Spectroscopy; New York (USA), July 24 - July 27, 2022.
• O. G. Willis, F.Petri, G.Pescitelli, A. Pucci, E. Cavalli, A. Mandoli, F. Zinna, L. Di Bari. Efficient 1400– 1600 nm Circularly Polarized Luminescence from a Tuned Chiral Erbium Complex; ChirItaly 2022 - 4th Italian Meeting on Molecular Chirality; Matera (Italy), September 19 - September 21, 2022.
Other achievements:
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