Põhako-Esko, KaijaChou, Hou-HsiuSääsk, VernerTartu Ülikool. Loodus- ja täppisteaduste valdkondTartu Ülikool. Keemia instituut2023-10-162023-10-162023https://hdl.handle.net/10062/93522This study reports on the successful preparation of eight novel luminescent manganese(II) complexes, for which melting and degradation onset temperatures, X-ray diffraction patterns, luminescence spectra, emission lifetimes, and quantum yields were measured. Based on the results, [BnMIm]2[MnBr4] (BnMIm = 1-benzyl-3-methylimidazolium ion) was chosen for the preparation of organic light-emitting diodes, due to its remarkable quantum yield (Ф = 0.59) and high crystallinity. Next, to demonstrate applicability of complexes with [BnMIm]+ cation as emitter materials, thin luminescent films were prepared out of them. Finally, optical band gap of [BnMIm]2[MnBr4] was estimated from its absorption spectrum.engembargoedAccessAttribution-NonCommercial-NoDerivatives 4.0 Internationalorganic light-emitting diodeoptoelectronicsquantum yieldlead-free perovskitesmanganese halidestransition-metal complexesinorganic chemistrymagistritöödThesis