The results revealed that the donor derived from m-phenylenediamine had higher electron density compared with other three donors.
The dark parts denote Rh nanoparticles and the brighter parts γ-Al2O3 particles, and Rh has higher electron density than Al because of larger atomic number.
Of these two, the most likely site of reaction is the aromatic ring since it has higher electron density, especially in the ortho and para positions to the electron-donating hydroxyl group at C-3 [35].
The electrophilic nature of the hydroxyl radical can lead to a preferential attack of compounds with aromatic rings, which have a high electron density [ 29, 30].
Both double and triple bonds have regions of high electron density lying outside the atom-to-atom bond axis.
The ITO NPs with 10% Sn doping have the shortest SPR wavelength which means that ITO NPs with 10% Sn doping have the highest electron density.
In the case of 3V2BN, N atoms around the vacancies in Fig. 5c have much higher electron density than B atoms while almost few electrons exist around B atoms at the edge sites in Fig. 5c.
Gold NPs have advantageous properties such as chemical stability, high electron density and affinity to biomolecules, making them very promising candidates as drug carriers and diagnostic tools.
It is more consistent with the ylide resonance structure 3 which features a high electron density phosphorus center having two lone pairs (Scheme 2).
The hydroxyl radical, the main oxidizing agent of AOPs, has a higher affinity for compounds with regions of high electron density, such as aromatic rings [ 29, 30].
The 2-dimensional SAXS pattern has started to be detected gradually as the crystalline phase transition from form II to form I was proceeded, since the form I has the higher electron density than the form II and amorphous phase.
