H2TPP(CH3)2(X) where X = NO2 and CHO exhibited very high dipole moment values (5.76‐7.59 D) as compared to H2TPP (0.052 D) due to push‐pull effect. These push‐pull porphyrins exhibited lower HOMO‐LUMO gap as compared to MTPP(NO2) and MTPP. The redox tunability was achieved ...
The design of the molecular structure, the substituent effect, and modulation of the electronic and geometric parameters can be used in order to optimize and tune frequency emission and conversion efficiency. Examples of some of the best dyes reported to-date and organic design strategies employed ...
Photophysical measurements of the synthesized compounds revealed the effect of the torsion between N,N-dimethylaniline (donor) and benzaldehyde moieties (acceptor) on their solvatochromic properties. Our data showed that the sensitivity of the fluorescence maxima to solvent polarity gradually increases as ...
A series of new beta-functionalized push-pull-structured porphyrin dyes were synthesized so as to investigate the effect of the p-conjugated spacer on the performance of dye-sensitized solar ...
of conjugating with either the donor or the attracting portion of the heterocyclic system, consistent with contributions from isatylidene resonance forms which induce the C-8 carbon atom to be charged either positively or negatively, thus allowing an opposite sense of the push–pull effect. C...