Now showing items 2961-2970 of 3254
Solution structure of a G-quadruplex bound to the bisquinolinium compound Phen-DC3
Phen-DC3 is a highly promising compound that specifically targets G-quadruplexes, with potent biological effects observed in vivo. We used NMR spectroscopy to solve the structure of the complex formed between Phen-DC3 and ...
Photoacoustic and thermoacoustic signal characteristics study
Photoacoustic/thermoacoustic imaging is an emerging hybrid imaging modality combining optical/microwave imaging with ultrasound imaging. The photoacoustic/thermoacoustic signal generated are affected by the nature of ...
N-metallacycles from [Cp*MX2]2 and alkynylpyridines : synthesis, reaction pathway, and romaticity
The reaction of [Cp*MX2]2 (M = Rh or Ir, X = Cl, Br, or I) with alkynylpyridines afforded halogen-substituted N-metallacyclic complexes. The reaction pathway has been examined through deuterium labeling and other experiments ...
Gold-catalyzed cycloisomerization and diels-alder reaction of 1,4,9-dienyne esters to 3 a,6-methanoisoindole esters with pro-inflammatory cytokine antagonist activity
A synthetic method to prepare 3a,6-methanoisoindole esters efficiently by gold(I)-catalyzed tandem 1,2-acyloxy migration/Nazarov cyclization followed by Diels–Alder reaction of 1,4,9-dienyne esters is described. We also ...
Selective nitrogen functionalization of graphene by bucherer-type reaction
Nitrogen functionalization of graphene offers new hybrid materials with improved performance for important technological applications. Despite studies highlighting the dependence of the performance of nitrogen-functionalized ...
So-called “metal-free” oxygen reduction at graphene nanoribbons is in fact metal driven
The oxygen reduction reaction (ORR) is of key importance in the field of electrochemical energy production. Remarkable catalytic properties of “metal-free” graphene nanoribbons towards the ORR were suggested in previous ...
On Hecke eigenvalues at primes of the form [g(n)]
We study the average of the Fourier coefficients of a holomorphic cusp form for the full modular group at primes of the form [g(n)].
Synthesis and characterization of thieno[3,2-b]thiophene-isoindigo-based copolymers as electron donor and hole transport materials for bulk-heterojunction polymer solar cells
A novel class of thieno[3,2-b]thiophene (TT) and isoindigo based copolymers were synthesized and evaluated as electron donor and hole transport materials in bulk-heterojunction polymer solar cells (BHJ PSCs). These ...
Variable selection for high-dimensional varying coefficient partially linear models via nonconcave penalty
In this paper, we consider the problem of simultaneous variable selection and estimation for varying-coefficient partially linear models in a “small n , large p ” setting, when the number of coefficients in the linear part ...
PhI(OAc)2 mediated radical trifluoromethylation of vinyl azides with Me3SiCF3
The fluorine-containing organic motif is becoming privileged in pharmaceuticals, agrochemicals, and functional materials, owing to its unique properties such as electron-withdrawing character, metabolic stability, and ...