Authors: Anuradha Dagar, Dirgha Raj Joshi , Ikyon Kim∗

Abstract

Due to a growing interest in aza-fused polyaromatic systems among various sciences, enormous attention has been continuously paid to designing and synthesizing novel chemotypes of N-fused hetero­cycles. During the course of continued efforts in this line, it was found that divergent access to new polycyclic N-fused heteroaromatics was enabled by the choice of reaction solvent. Described herein are solvent-controlled selective approaches to three novel N-fused azacycles, benzo-[d]imidazole-pyrrolo[1,2-a]pyrazine hybrids, under mild conditions. The plausible reaction mechanism for each class of compound is suggested as well.

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Authors: Suzi Kim, Jae hyun Park, Dirgha RajJoshi, Na Keum Lee, Hang Le Bich Pham, Linh Khanh Chung, Min Joo Kang, Young gwan Kim, Ikyon Kim, Jeeyeon Lee

Abstract

Here, we report benzofuro[2,3-c]isoquinolines (FiQ) as novel blue AIEgens, in which a -OMe group substituent plays a crucial role in modulating intermolecular interactions, inducing a marked increase in emission of up to 150- and 460-fold in the aggregate and solid states, respectively. Our single-crystal X-ray diffraction analysis revealed that the edge-to-face interactions among phenyl groups generate tight networks that rigidify the assembled structures, resulting in AIE.