Synthesis and Optical and Redox Properties of Core‐Substituted Naphthalene Diimide Dyes.

Abstract

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Ultrafast photoinduced electron transfer in conjugated polyelectrolyte–acceptor ion pair complexes

“…The spectrum of the reduced diimide (NDI + ) has been well documented in previous spectroelectrochemical and transient absorption studies. [53][54][55] Fig. 5a illustrates the TA difference spectra of the [CPE, NDI 2+ ] ion-pair complex recorded at different delay times.…”

Enhancement of air-stability, π-stacking ability, and charge transport properties of fluoroalkyl side chain engineered n-type naphthalene tetracarboxylic diimide compounds

“…Several strategies are already reported to design n-type OSCs, such as (i) insertion of electron-withdrawing groups (-F, -Cl, -CN etc.) on the backbone of known p-type materials 12 (ii) functionalization of electron-decient ring systems such as naphthalene tetracarboxylic diimide (NDI), 13,14 perylene tetracarboxylic diimide (PDI), 15,16 diketopyrrolopyrrole (DPP) 17,18 etc. Among the n-type OSCs, naphthalene tetracarboxylic diimides (NDIs) are one of the most promising n-type candidates for their high electron affinity, ambient air-stability and tunable optoelectronic properties.…”

Tuning the optoelectronic properties of core-substituted naphthalene diimides by the selective conversion of imides to monothioimides

“…RF2-2S has a l max in the near-IR at 733 nm and an optical gap of 1.59 eV, which is very low for this type of molecule. Compounds 1, 2, 3, 4, b, and c were synthesized according to literature procedures with slight modications 12,[17][18][19][20]. dianhydride (NDA) (Aldrich), 2-ethylhexylamine (Aldrich), Lawesson's reagent (Aldrich), sulphuric acid (Fisher), acetic acid (Fisher), ammonium acetate (Fisher), dibromoisocyanuric acid (DBI) (TCI America) were used as received.…”