Search
Skip to Search Results-
Tailorable Indirect to Direct Band-Gap Double Perovskites with Bright White-Light Emission: Decoding Chemical Structure Using Solid-State NMR
Download2020-01-01
Karmakar, A., Bernard, G.M., Meldrum, A., Oliynyk, A.O., Michaelis, V.K.
Efficient white-light-emitting single-material sources are ideal for sustainable lighting applications. Though layered hybrid lead–halide perovskite materials have demonstrated attractive broad-band white-light emission properties, they pose a serious long-term environmental and health risk as...
-
2020-01-01
Hooper, R.W., Klein, B.A., Michaelis, V.K.
The design of new materials requires a deep understanding of the intricacies underpinning their structure–property relationships. These relationships are modified through synthesis and processing to create materials with new properties and characteristics to achieve a wide range of applications....
-
Lead‐207 NMR spectroscopy at 1.4 T: Application of benchtop instrumentation to a challenging I = ½ nucleus
Download2020-01-01
Bernard, G.M., Michaelis, V.K.
The practicality of obtaining liquid‐ and solid‐state 207Pb nuclear magnetic resonance (NMR) spectra with a low permanent‐field magnet is investigated. Obtaining 207Pb NMR spectra of salts in solution is shown to be viable for samples as dilute as 0.05 M. The concentration dependence of the 207Pb...
-
Annealing induced structural evolution in feldspar dental glass-ceramics investigated by solid-state NMR spectroscopy
Download2020-01-01
Bhattacharya, A., Qiu, Y., Bernard, G.M., Butler, S., Mar, A., Michaelis, V.K.
Glass-ceramics are an attractive oxide-based material routinely used for biomineral repair such as porcelain veneers in dental crown applications. The short- and long-range structure of a commercial glass-ceramic feldspar material, VITA VM9, has been investigated as a function of annealing...
-
Phase Evolution in Methylammonium Tin Halide Perovskites with Variable Temperature Solid-State 119Sn NMR Spectroscopy
Download2020-01-01
Ha, M., Karmakar, A., Bernard, G.M., Basilio, E., Krishnamurthy, A., Askar, A.M., Shankar, K., Kroeker, S., Michaelis, V.K.
Hybrid organic–inorganic metal-halide perovskite materials are an emerging class of materials that could profoundly change the optoelectronic and solar absorber research fields and have far-reaching applications. Unfortunately, the leading solar-absorbing candidates are lead-containing materials...
-
2019-01-01
Thiessen, A.N., Ha, M., Hooper, R.W., Yu, H., Oliynyk, A.O., Veinot, J.G.C., Michaelis, V.K.
Silicon nanoparticles (SiNPs) are biologically compatible, metal-free quantum dots that exhibit size and surface tailorable photoluminescence. The nanostructure of these materials influences their optical, chemical, and material properties and hence plays an important role in their...
-
Alkaline Earth Metal–Organic Frameworks with Tailorable Ion Release: A Path for Supporting Biomineralization
Download2019-01-01
Matlinska, M.A., Ha, M., Hughton, B., Oliynyk, A.O., Iyer, A.K., Bernard, G.M., Lambkin, G., Lawrence, M.C., Katz, M.J., Mar, A., Michaelis, V.K.
An innovative application of metal–organic frameworks (MOFs) is in biomedical materials. To treat bone demineralization, which is a hallmark of osteoporosis, biocompatible MOFs (bioMOFs) have been proposed in which various components, such as alkaline-earth cations and bisphosphonate molecules,...
-
2019-01-01
Karmakar, A., Dodd, M.S., Zhang, X., Oakley, M.S., Klobukowski, M., Michaelis, V.K.
A simplified mechanochemical synthesis approach for Cs-containing mixed halide perovskite materials of lower and higher dimensionality (0D and 3D, respectively) is presented with stoichiometric control from their halide salts, CsX and PbX2 (X = Cl, Br, I). Excellent optical bandgap tunability...
-
2019-01-01
Ha, M., Thiessen, A.N., Sergeyev, I.V., Veinot, J.G.C., Michaelis, V.K.
Silicon nanoparticles (SiNPs) are intriguing materials and their properties fascinate the broader scientific community; they are also attractive to the biological and materials science sub-disciplines because of their established biological and environmental compatibility, as well as their...
-
2019-01-01
Bernard, G.M., Michaelis, V.K.
High‐field dynamic nuclear polarization nuclear magnetic resonance (DNP NMR) spectroscopy is rapidly emerging as a revolutionary analytical structural method by greatly enhancing the sensitivity of nuclear magnetic resonance. Innovative solutions are constantly being introduced to address the...