New publication about surface modification of UCNPs

Check out a new publication about the surface modification and layer-by-layer assembly on upconverting nanoparticles.

Palo, E., Salomäki, M., and Lastusaari, M., ”Surface modification of upconverting nanoparticles by layer-by-layer assembled polyelectrolytes and metal ions”, J Colloid Interface Sci. 508 (2017) 137–144.
Read online:

New publications during the summer

Check out these new publications that have been published during summer. These concern coordination chemistry of metals, luminescent clay minerals and upconversion in glass materials and in hackmanites.

Norrbo, I., Hyppänen, I. and Lastusaari, M., “Up-conversion luminescence – A new property in tenebrescent and persistent luminescent hackmanites”, J. Lumin. 191 (2017) 28-34.
Read online:

Santos, H.S., Carvalho, J.M., Viinikanoja, A., Hyppänen, I., Laihinen, T., Romani, E.C., Larrudé, D.G., Tuominen, Marjukka, Laukkanen, P., Swart, H.C., Brito, H.F., Hölsä, J, and Lastusaari, M., “Glowing synthetic chlorohectorite: The luminescent features of a trioctahedral clay mineral”, J. Lumin. 192 (2017) 567-573.
Read online:

Seppälä, P., Sillanpää, R., and Lehtonen, A., “Structural diversity of copper(II) amino alcoholate complexes”, Coord. Chem. Rev. 347 (2017) 98-114.
Read online:

Nguyen, H., Tuomisto, M., Oksa, J., Salminen, T., Lastusaari, M., and Petit, L. “Upconversion in low rare-earth concentrated phosphate glasses using direct NaYF4:Er3+,Yb3+ nanoparticles doping”, Scripta Mater. 139 (2017) 130-133.
Read online:

Schachner, J.A., Mösch-Zanetti, N.C., Peuronen, A., and Lehtonen, A., “Dioxidomolybdenum(VI) and –tungsten(VI) complexes with tetradentate amino bisphenolates as catalysts for epoxidation”, Polyhedron 134 (2017) 73-78.
Read online:

Hossain, M.K., Schachner, J.A., Haukka, M., Lehtonen, A., Mösch-Zanetti, N.C., and Nordlander, E., “Dioxidomolybdenum(VI) and -tungsten(VI) complexes with tripodal amino bisphenolate ligands as epoxidation and oxo-transfer catalysts”, Polyhedron 134 (2017) 275-281.
Read online:

Publication about ALD in producing upconverting thin films

Check out our new publication about up-converting thin films and their properties by atomic layer deposition. The work is done in collaboration with Aalto university.

Tuomisto, M., Giedraityte, Z., Karppinen, M., and Lastusaari, M. “Photon up-converting (Yb,Er)2O3 thin films by atomic layer deposition”, Phys. Status Solidi-R 11 (2017) e201700076.
Read online:

New publication on molybdenum(VI) oxo transfer catalysts

Check out a new publication about molybdenum(VI) complexes and their catalytic activity.

Hossain, M.K., Haukka, M., Sillanpää, R., Hrovat, D.A., Richmond, M.G., Nordlander, E., and Lehtonen, A. “Syntheses and catalytic oxotransfer activities of oxo molybdenum(VI) complexes of a new aminoalcohol phenolate ligand”, Dalton Trans. 46 (2017) 7051-7060.
Read online: 10.1039/C7DT00846E

New publication about low-cost white persistent luminescence materials

Our latest publication enlightens an alternative route to prepare white emitting phophors by using Li-Hackmanites as a host material. Moreover, the long lasting persistent luminecence can be obtained without heavy metals.

Check out the publication in Advanced Functional Materials below and congratulations to Isabella, José and Mika for their hard work that really paid off!

Norrbo, I., Carvalho, J.M., Laukkanen, P., Mäkelä, J., Mamedov, F., Peurla, M., Helminen, H., Pihlasalo, S., Härmä, H., Sinkkonen, J., and Lastusaari, M. “Lanthanide and Heavy Metal Free Long White Persistent Luminescence from Ti Doped Li-Hackmanite: A Versatile, Low-Cost Material”, Adv. Funct. Mater. 27 (2017) 1606547.
Read online:

New publication about phosphate glasses

Check out a new collaboration publication about the structural properties of phosphate glasses.

Lopez-Iscoa, P., Salminen, T., Hakkarainen, T., Petit, L., Janner, D., Boetti, N.G., Lastusaari, M., Pugliese, D., Paturi, P., and Milanese, D. “Effect of Partial Crystallization on the Structural and Luminescence Properties of Er3+-Doped Phosphate Glasses”, Materials 10 (2017) 473.
Read online:

New publication about a new wide-range beamline in Lund

We’re participating in the ongoing buildup of Finnish-Estonian beamline at the MAX IV Laboratory. Check out this new publication about the wide-range beamline and its properties.

Pärnä, R., Sankari, R., Kukk, E., Nõmmiste, E., Valde, M., Lastusaari, M., Kooser, K., Kokko, K., Hirsimäki, M., Urpelainen, S., Turunen, P., Kivimäki, A., Pankratov, V., Reisberg, L., Hennies, F., Tarawneh, H, Nyholm, R., and Huttula, M., “FinEstBeaMS – A wide-range Finnish-Estonian Beamline for Materials Science at the 1.5 GeV storage ring at the MAX IV Laboratory”, Nucl. Instrum. Meth. A 859 (2017) 83-89.
Read online:

New publications on upconversion luminescence properties

Check out these two new publications from Iko dealing with the upconversion luminescence properties. One concerning excitation power effects and temperature sensing and the other about red upconversion emission pathways. Congrats, Iko!

Hyppänen, I., Perälä, N., Arppe, R., Schäferling, M., and Soukka T., “Environmental and Excitation Power Effects on the Ratiometric Upconversion Luminescence Based Temperature Sensing Using Nanocrystalline NaYF4:Yb3+,Er3+“, ChemPhysChem 18 (2017) 692-701.
Read online:

Hyppänen, I., Höysniemi, N., Arppe, R., Schäferling, M., and Soukka, T., “Enviromental Impact on the Excitation Path of the Red Upconversion Emission of Nanocrystalline NaYF4:Yb3+,Er3+“, J. Phys. Chem. C 121 (2017) 6924−6929.
Read online:

New publication about upconverting nanoparticle synthesis

Check out the new publication from Emilia if you want to know more about the upconversion nanoparticle synthesis.

Palo, E., Tuomisto, M., Hyppänen, I., Swart, H.C., Hölsä, J., Soukka, T., and Lastusaari, M., “Highly uniform up-converting nanoparticles: Why you should control your synthesis even more”, J. Lumin. 185 (2017) 125–131.
Read online:

Collaboration publications about semiconductors and upconverting nanoparticles

Have a look at our latest collaboration publications, from the end of 2016 and the beginning of 2017. One is about Mg doped AlGaN semiconductor crystals and its properties and the other about disintegration of upconverting nanoparticles.

Mäkelä, J., Tuominen, M., Nieminen, T., Yasir, M., Kuzmin, M., Dahl, J., Punkkinen, M., Laukkanen, P., Kokko, K., Osiecki, J., Schulte, K., Lastusaari, M., Huhtinen, H., and Paturi, P., Comparison of Chemical, Electronic, and Optical Properties of Mg-Doped AlGaN, J. Phys. Chem. C 120 (2016) 28591–28597.
Read online:

Lahtinen, S., Lyytikäinen, A., Päkkilä, H., Hömppi, E., Perälä, N., Lastusaari, M., and Soukka, T., Disintegration of Hexagonal NaYF4:Yb3+,Er3+ Upconverting Nanoparticles in Aqueous Media: The Role of Fluoride in Solubility Equilibrium, J. Phys. Chem. C 121 (2017) 656-665.
Read online: