Deciphering anion–π-acceptor interactions and detecting fluoride using a naphthalenediimide-based Pd(ii) coordination polymer

Solution‐Processable Conductive Organics via Anion‐Induced n‐Doping and Their Applications in Organic and Perovskite Solar Cells

“…However, the most explored n‐dopants are reactive chemicals, such as alkali metals (Na, K, Li, etc. ), cationic dyes, strong electron donors, and organometallic complexes, usually processed through vacuum processing. Some of them are unstable under common solution‐processing, which hinders their application in solution‐processable optoelectronics.…”

Aroyleneimidazophenazine: A Sensitive Probe for Detecting CN−Anion and its Solvatochromism Effect

“…The new sharp peaks could come from the backbones polarized by anions. The band is most likely ascribed to the intermolecular electron transfer between anions and molecules of 1 . Almost no PL was observed in the existence of CN − anions.…”

“…Recently, N ‐rich heteroacenes , where pyridinic N atoms are used to replace CH groups in the backbones of oligoacenes , have been explored as promising materials for organic electronics and the detections of anions and cations. Among them, anion‐ π interaction , a non‐covalent interaction between electron‐deficient azaacenes and anions, plays a key role to perform the anion‐sensing function. In our previous research , we are more interested in selectively sensing cyanide and fluoride anions because of their notorious toxicity to lethal death or skeletal damages .…”

“…In our previous research , we are more interested in selectively sensing cyanide and fluoride anions because of their notorious toxicity to lethal death or skeletal damages . To date, most reported sensors for the detection of CN − /F − mainly focus on proton receptors , deprotonations , desilylation reaction , ligands displacement , and cyanide substitution . However, the applications of these sensors have been limited by their low sensitivity and difficult accessibility.…”

“…Because both imides and azaacenes have been demonstrated as electron‐deficient systems for ion recognition via anion‐ π interaction , the fusion of pyrazine imide unit and azaacene moiety into one molecule could provide a more sensitive and selective probe to respond to ions or solvents. Here, we report a new aroyleneimidazophenazine derivative: 15 H ‐pyrazino[2″,3″:3′,4′]pyrrolo‐[1′,2′:1,2]imidazo[4,5‐ b ]phenazin‐15‐one ( 1 ), which can effectively recognize and distinguish CN − and F − with dual responses: color change and fluorescent “turn‐off” effect over other 10 anions (BF 4 − , PF 6 − , Cl − , SO 4 2− , NO 3 − , I − , H 2 PO 4 − , ClO 4 − , Ac − , and Br − with the same cation tetrabutylammonium as charge‐balancing cation ) [16b,c].…”