Diazines are electron deficient six-membered aromatic rings heterocycles which have successfully been employed in the design of a wide range push-pull chromophores for various applications field organic electronics and optoelectronics. For instance, some specifically designed to be inserted electroluminescent emission layer light emitting diodes (OLED). OLED technology has continuously evolved ...

Abstract Nitrogen‐heterocycle‐based covalent organic frameworks (COFs) are considered promising candidates for the overall photosynthesis of hydrogen peroxide (H 2 O ). However, effects relative nitrogen locations remain obscured and photocatalytic performances COFs need to be further improved. Herein, a collection functionalized by various diazines including pyridazine, pyrimidine, pyrazine ha...

The excited state lifetimes of DNA bases are often very short due to very efficient non-radiative processes assigned to the ππ*-nπ* coupling. A set of protonated aromatic diazine molecules (pyridazine, pyrimidine and pyrazine C4H5N2(+)) and protonated pyrimidine DNA bases (cytosine, uracil and thymine), as well as the protonated pyridine (C5H6N(+)), have been investigated. For all these molecul...

We have developed an approach to prepare drug-releasing Tetra-PEG hydrogels with exactly four cross-links per monomer. The gels contain two cleavable β-eliminative linkers: one for drug attachment that releases the drug at a predictable rate, and one with a longer half-life placed in each cross-link to control biodegradation. Thus, the system can be optimized to release the drug before signific...

Articles you may be interested in Two-dimensional spectra of electron collisions with acrylonitrile and methacrylonitrile reveal nuclear dynamics An experimental and theoretical investigation into the excited electronic states of phenol Low-rank spectral expansions of two electron excitations for the acceleration of quantum chemistry calculations Shape and core excited resonances in electron co...

The ground and excited states of aminonitrene (1 ,I-diazine), H2NN, were studied using generalized valence bond (GVB) and configuration interaction (GVB-CI) wave functions. We find that the ground state is a singlet state ( 'Ai) with the triplet (3A2) lying 15 kcal/mol higher. ( In the Hartree-Fock description, the triplet state is 5 kcal below the singlet, indicating the necessity of including...

The prospect that protons from water may be transferred to N-heterocyclic molecules due to the presence of an excess electron is studied in hydrated azabenzene cluster anions using anion photoelectron spectroscopy and computational chemistry. In the case of s-triazine (C3H3N3), which has a positive adiabatic electron affinity, proton transfer is not energetically favored nor observed experiment...

Merging two topical themes in main-group chemistry, namely, cooperative bimetallics and frustrated-Lewis-pair (FLP) activity, this Forum Article focuses on the cooperativity-induced outcomes observed when the tris(alkyl)gallium compound GaR3 (R = CH2SiMe3) is paired with the lithium amide LiTMP (TMP = 2,2,6,6-tetramethylpiperidide) or the sterically hindered N-heterocyclic carbene (NHC) 1,3-bis...