A new D π A dye with a (benzo[4,5]thieno[2,3-c]pyridiniumyl propanesulfonate as an electron-withdrawing anchoring group has benzo[4,5]thieno[2,3-c]pyridiniumyl propanesulfonate dye-sensitized solas cells.
New zinc phthalocyanine, peripherally functionalized with eight electron-withdrawing benzothiadiazole moieties through alkynic bond linkage, has been designed and synthesized.
We have synthesized two series of Huprine analogues; in the first one, the benzene ring of the quinoline moiety has been replaced by different heterocycles or electron-withdrawing or electron-donating substituted phenyl group.
It has been demonstrated that the incorporation of electron-withdrawing thiadiazolo[3,4-c]pyridine unit can effectively tune the HOMO and LUMO energy levels, extending the absorption spectra into the deep-red region and covering the whole visible region.
Thanks to the tailoring of these anions and to this physico-chemical approach it has been possible to show that resonance electron-withdrawing effects, as opposed to inductive ones, are decisive in reaching high conductivities in aprotic polymer electrolytes.
The ability of 1+ to activate H2, when combined with Lewis base tBu3P, has been reported previously, and the lack of electron-withdrawing groups in 1+ imparts considerable hydridic character to the neutral NHC borane adducts, even in comparison with anionic borohydrides such as [HB(C6F5 3]−.
The effect from the electron-withdrawing and electron-donating substituents on charge injection, transport, absorption, and phosphorescent properties has been investigated.
A series of novel blue light-emitting copolymers PCC-1, PCC-2, and PCC-3, composed of different ratios of electron-withdrawing segments (spirobifluorene substituted with cyanophenyl groups) and electron-donating segments (carbazole-triphenylamines), has been synthesized and characterized.
In conclusion, the new concept of AMMMn has been successfully applied to arenes functionalised with electron-donating (MeO) or electron-withdrawing {C(O N iPr 2} groups.
The intra-molecular charge transfer (ICT) has been improved by substituting the electron-donating groups (EDGs) at one end while electron-withdrawing groups (EWDGs) at other end.
