Results 101 to 110 of about 3,034,026 (343)

Boron-based donor-spiro-acceptor compounds exhibiting thermally activated delayed fluorescence (TADF).

open access: yesDalton Transactions, 2018
Four boron-based donor-spiro-acceptor compounds, composed of different donor moieties and borylated 2-phenylpyridines as the acceptor, were studied. Their intense photoluminescence in the solid state can be tuned by changing the donor and long emission ...
M. Stanoppi, Andreas Lorbach
semanticscholar   +1 more source

Progress in Flexible Perovskite Solar Cells: Paving the Way for Scalable Manufacturing

open access: yesAdvanced Materials Technologies, EarlyView.
Perovskite solar cells (PSCs) are well positioned for a successful market uptake. This is due to an unprecedented improvement of their efficiency and stability since the first report in 2009. In this review paper, the building blocks for the scalable manufacturing and future commercialization of flexible PSCs and their pathway to impact will be ...
Dimitar I. Kutsarov   +5 more
wiley   +1 more source

Understanding macroscale functionality of metal halide perovskites in terms of nanoscale heterogeneities [PDF]

open access: yes, 2019
Hybrid metal halide perovskites have shown an unprecedented rise as semiconductor building blocks for solar energy conversion and light-emitting applications.
Sharp, ID, Song, TB, Sutter-Fella, CM
core  

[1]Benzothiophene-Fused Chiral Spiro Polycyclic Aromatic Compounds: Optical Resolution, Functionalization, and Optical Properties.

open access: yesJournal of Organic Chemistry, 2018
Spiro polycyclic aromatic compounds have been known as rigid chiral scaffolds. In order to extend their applications, an efficient preparation route to enantiopure derivatives is highly required.
K. Takase, K. Noguchi, K. Nakano
semanticscholar   +1 more source

Molecular Nanoarchitectonic Sensing Layer for Analysis of Volatile Fatty Acids in Bioreactor Headspaces Using a Nanomechanical Sensor

open access: yesAdvanced Materials Technologies, EarlyView.
A porous crystalline sensing layer has been developed in conjunction with a nanomechanical sensor for the sensitive detection of volatile fatty acids (VFAs) in admixture at high relative humidity. The sensitive, selective sensor based on supramolecular design improves the economic viability of anaerobic digesters toward a carbon neutral society ...
Subrata Maji   +13 more
wiley   +1 more source

Homogeneous toric bundles with positive first Chern class [PDF]

open access: yesarXiv, 2004
A simple algebraic characterization of the Fano manifolds in the class of homogeneous toric bundles over a flag manifold $G^C/P$ is provided in terms of symplectic data.
arxiv  

6-dimensional nearly Kaehler manifolds of cohomogeneity one [PDF]

open access: yes, 2009
We consider 6-dimensional strict nearly Kaehler manifolds acted on by a compact, cohomogeneity one automorphism group G. We classify the compact manifolds of this class up to G-diffeomorphisms. We also prove that the manifold has constant sectional curvature whenever the group G is simple.
arxiv   +1 more source

A Concise Total Synthesis of (--)-Maoecrystal Z [PDF]

open access: yes, 2011
The first total synthesis of (--)-maoecrystal Z is described. The key steps of the synthesis include a diastereoselective Ti^(III)-mediated reductive epoxide coupling reaction and a diastereoselective Sm^(II)-mediated reductive cascade cyclization ...
Cha, Jacob Y.   +2 more
core   +2 more sources

Highly Efficient Upconverted Fluorescence from Coulombically Assembled Ion Pair

open access: yesAdvanced Optical Materials, EarlyView.
A dicationic Os(II) complex paired with two monoanionic fluorophores is designed to enable highly efficient triplet–triplet annihilation upconversion, achieving a remarkable upconverted fluorescence quantum yield of 13% at 785 nm excitation with a record‐low threshold intensity of 5.9 mW cm⁻2, attributed to diffusion‐free acceleration of energy ...
Ji Hye Baek   +6 more
wiley   +1 more source

Cohomology groups for Lagrange complexes that are invariant under a pseudogroup of local transformations [PDF]

open access: yesarXiv, 2004
This paper has been withdrawn by the author due to a crucial error in formula 4.12 ...
arxiv  

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