“…In particular, the use of amino and boryl moieties as the electron-donating and -accepting groups, respectively, can produce dyes that exhibit high fluorescence and solvatochromism. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We believe that the incorporation of an electron-donating group at the meso-position of the thiophene-fused BODIPY platform may be an effective approach for developing theranostic agents for precision cancer therapy.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We found that these two property estimates correlate with the number of hydrogen bond-donating functional groups and oxygen atoms in the compound. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Control over excitonic interactions within, for example, the electron-donating porphyrin dimers was realized by complexation of bidentate ligands to set up panchromatic absorption that extends all the way into the near-infrared range. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Mono or diketone units and double diphenylamine electron-donating groups in para-or meta-positions were introduced to comprehend the electronic and structural effects on free radical photopolymerization (FRPP). …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Folates play a role as cofactors in essential one-carbon pathways donating methyl-groups to choline phospholipids, creatine, epinephrine, DNA. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Here, by importing cobalt single clusters as strong electron-donating promoter into the catalyst, the rate-determining step of ammonia synthesis is altered to the subsequent proton addition so that the barrier of N(2) dissociation can be successfully overcome. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…In the present article, we assess this thesis via the examination of the effect of electron-withdrawing and electron-donating groups, namely −F, −Cl, −Br, −CF(3), −N(CH(3))(2), −OCH(3), −NHCOCH(3) on the strength of the RAHB in malondialdehyde by using the Quantum Theory of Atoms in Molecules (QTAIM) and the Interacting Quantum Atoms (IQA) analyses. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The evaluation of steric, electron-donating and π-accepting properties as well as coordination chemistry to Au(i), Rh(i) and Pd(ii) is presented. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We study three stake levels: 5€ (n = 177), 100€ (n = 168), and 1,000€ (n = 171). Although the donations increase in absolute terms as the stakes increase, subjects decrease the donated fraction of the pie. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The accelerated formation of 2,3-diphenylquinoxalines in microdroplets generated in a nebulizer has been investigated by competition experiments in which equimolar quantities of 1,2-phenylenediamine, C(6)H(4)(NH(2))(2), and a 4-substituted homologue, XC(6)H(3)(NH(2))(2) [X = F, Cl, Br, CH(3), CH(3)O, CO(2)CH(3), CF(3), CN or NO(2)], or a 4,5-disubstituted homologue, X(2)C(6)H(2)(NH(2))(2) [X = F, Cl, Br, or CH(3)], compete to condense with benzil, (C(6)H(5)CO)(2). Electron-donating substituents (X = CH(3) and CH(3)O) accelerate the reaction; in contrast, electron-attracting substituents (X = F, Cl, Br and particularly CO(2)CH(3), CN, CF(3) and NO(2)) retard it. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Those compounds contain different substituents including alkyl groups, electron-donating groups (EDGs), and electron-withdrawing groups (EWGs). …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…N-Protected oxindole derivatives of unprecedented malleability bearing ester moieties at C-3 have been shown to participate in enantioselective phase-transfer-catalysed alkylations promoted by ad-hoc designed quaternary ammonium salts derived from quinine bearing hydrogen-bond donating substituents. For the first time in such phase-transfer-catalysed enolate alkylations, the reactions were carried out under base-free conditions. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The rather large coupling constant of (1) J (P,Se)=883 Hz is in line with a P−Se bond of high s‐character. The σ‐electron donating Me(3)Si‐substituents significantly increase the energy of the phosphorus lone pair and hence its basicity, making the heterocycle considerably more basic and nucleophilic than the unsubstituted phosphinine C(5)H(5)P, as confirmed by the calculated gas phase basicities. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…In this respect, two structural factors were examined, namely, (i) the effect of replacement of the S-atom of diaryl sulfide by SO or SO(2) group, (ii) the effect of the introduction of an electron-withdrawing or an electron-donating group in the aryl moiety. Two computational chemical approaches were used to achieve the objectives: the density functional theory (DFT) and the Monto Carlo (MC) simulation. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…In this paper, nine oligomers are designed by combining three new electron-deficient units (unit(A))—n1, n2, and n3—and three electron-donating units (unit(D))—D, E, and F—with their π-conjugation area extended. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The charge-transfer capability of the solvent, and in particular its electron-donating capability, plays an essential role in influencing the interaction between the coal and solvent. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…This transition has been progressively achieved by substituting the migrating group, changing the donor and acceptor atoms, and functionalizing the alkene unit with weak and strong electron-donating and electron-withdrawing groups. Fourteen [1,3] sigmatropic reactions with electronic energy barriers ranging from 1 to 89 kcal/mol have been investigated. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Changes in the electron density of aromatic compounds are expected to alter the reaction pathway following one electron oxidation through altering the pK(a) of the formed intermediate cation radical. Electron-donating groups increase its stability, however, little experimental data are known. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Herein, a small organic molecule (PTA) with a D-A-D structure was prepared via a Sonogashira coupling reaction between the electron-withdrawing dibromo-perylenediimide and electron-donating 4-ethynyl-N,N-diphenylaniline. The amphiphilic organic molecule was then transformed into nanoparticles (PTA-NPs) through the self-assembling method. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso