scholarly journals Colour effects with the Nitrobenzyll Esters of Dimethylaminobenzoic acids

1978 ◽  
Vol 31 (7) ◽  
pp. 1623
Author(s):  
FHC Stewart
Keyword(s):  
Solid State ◽  
Crystal Lattice ◽  
Electron Donor ◽  
Acceptor Interaction ◽  
Polymorphic Modifications ◽  
Donor Acceptor

Nitrobenzyl esters of dimethylaminobenzoic acids are strongly coloured in the solid state but not in solution. The operation of electron donor-acceptor interaction within the crystal lattice is indicated. One of the compounds, o-nitrobenzyl m-dimethylaminobenzoate, formed two differently coloured polymorphic modifications.

scholarly journals The Surface Properties of Calcite: An Adsorption Model with Orbital Control

2001 ◽  
Vol 19 (3) ◽  
pp. 237-244 ◽  
Author(s):  
Nikolai V. Nikolenko
Keyword(s):  
Surface Properties ◽  
Organic Compounds ◽  
Electron Donor ◽  
Organic Molecules ◽  
Orbital Interaction ◽  
Adsorption Model ◽  
Acceptor Interaction ◽  
Donor Acceptor ◽  
Correlation Parameters ◽  
Adsorptive Properties

The energies of unoccupied and occupied orbitals were used as the correlation parameters between the electronic and adsorptive properties of organic molecules. A model describing the chemisorption of organic compounds on CaCO3 involving two types of interaction, i.e. two-electron, donor–acceptor interaction HOMO(adsorbent) → LUMO(adsorbate) and four-electron, three-orbital interaction HOMO(adsorbent) → {LUMO(adsorbate) + HOMO(adsorbate)}, was proposed. It was concluded that strengthening of the bond involved in chemisorption occurred if the energies of the occupied orbitals associated with the adsorbate and adsorbent were concurrent.

Solid-State Photochromic Device Based on Nanocrystalline TiO2Functionalized with Electron Donor−Acceptor Species

2005 ◽  
Vol 44 (26) ◽  
pp. 9619-9621 ◽  
Author(s):  
Matteo Biancardo ◽  
Roberto Argazzi ◽  
Carlo A. Bignozzi
Keyword(s):  
Solid State ◽  
Electron Donor ◽  
Donor Acceptor
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