Printable perovskite quantum dot (QD) ink is very important for achieving high quality coffee ring-free fluorescent microarrays for different kinds of emerging perovskite optoelectronic applications using inkjet printing.

Directly growing perovskite single crystals on charge carrier transport layers will unravel a promising route for the development of emerging optoelectronic devices. Herein, in situ growth of high‐quality all‐inorganic perovskite (CsPbBr3) single crystal arrays (PeSCAs) on cubic zinc oxide (c‐ZnO) is reported, which is used as an inorganic electron transport layer in optoelectronic devices, via a facile spin‐coating method. The PeSCAs consist of rectangular thin microplatelets of 6–10 µm in length and 2–3 µm in width. The deposited c‐ZnO enables the formation of phase‐pure and highly crystallized cubic perovskites via an epitaxial lattice coherence of (100)CsPbBr3∥(100)c‐ZnO, which is further confirmed by grazing incidence wide‐angle X‐ray scattering. The PeSCAs demonstrate a significant structural stability of 26 days with a 9 days excellent photoluminescence stability in ambient environment, which is much superior to the perovskite nanocrystals (PeNCs). The high crystallinity of the PeSCAs allows for a lower density of trap states, longer carrier lifetimes, and narrower energetic disorder for excitons, which leads to a faster diffusion rate than PeNCs. These results unravel the possibility of creating the interface toward c‐ZnO heterogeneous layer, which is a major step for the realization of a better integration of perovskites and charge carrier transport layers.

Objective: The aim of this study was to evaluate an adult home palliative care (HPC) program for multiple insurance product lines using multiple vendors to determine if the annual costs of health care decreased for those enrolled in HPC. Study Design: Of the 506 members who were referred to and qualified for palliative care in 2019, a retroactive review was done comparing annual health care costs between the 396 members in the enrolled group and the 110 members in the group receiving usual care. Methods: The total health care costs for the calendar year 2019 were compared between the group enrolled in HPC and those who received usual care. Cost savings were further evaluated based on whether the member was enrolled in the palliative care program for 1-5 versus 6-12 months. Results: Overall medical costs for these 396 enrollees for the calendar year 2019 showed a gross savings of $24,643 per member (16.7% decrease in cost). For members enrolled for 1-5 months, annual gross savings were $23,314 per member (15.8% decrease from the comparison group), and for members enrolled for 6-12 months, annual gross savings were $26,409 per member (17.9% decrease). The savings were most prominent for the commercial insurance product with a 51% decrease in annual costs. Conclusions: Adult home-based palliative care delivered by multiple vendors (consisting of multiple insurance product lines) to a population is effective in decreasing total medical costs by 16.7% during a calendar year compared with a control group. The gross savings for those enrolled for 6-12 months (17.9%) were greater than the gross savings for those enrolled for 1-5 months (15.8%). The savings were most prominent for the commercial insurance product, while an increase in cost was seen for the Medicaid product.

Metalloporphyrins have attracted great attention in the potential application of biomimetic catalysis. Especially, they were widely investigated as green catalysts in the chemical oxidation of various hydrocarbons through the catalytic activation of molecular oxygen. The structural properties of active central metal ions were reported to play a decisive role in catalytic activity. However, those delicate structural changes are difficult to be experimentally captured or elucidated in detail. Herein, we explored the electronic structural properties of metalloporphyrins (metal porphyrin (PMII, PMIIICl)) and their corresponding catalytically active intermediates (metal(III)-peroxo(PMIII-O2), metal(III)-hydroperoxo(PMIII-OH), and metal(IV)-oxo(PMIV=O), (M=Fe, Mn, and Co)) through the density functional theory method. The ground states of these intermediates were determined based on the assessment of relative energy and the corresponding geometric structures of ground states also further confirmed the stability of energy. Furthermore, our analyses of Mulliken charges and frontier molecular orbitals revealed the potential catalytic behavior of reactive metalloporphyrin intermediates.