In this work, nitrogen-annulated perylene (NP) was dimerized into one framework connected by two nitrogen atoms, generating the target molecule of DNP-DA. Owing to the substructure of 1,6-diazecine ten-membered ring, DNP-DA illustrates helical chirality with moderate dissymmetry factor, elevated molecular levels, expanded conjugation and supramolecular interactions with acceptors etc. Notably, DNP-DA represents a limited example of nitrogen-perylene based CPL emitter with g around 6×10 . Intrigued by the facile fabrication via a simple amination-cross coupling sequence and other above advancing features, this work demonstrates the potential generality of utilizing 1,6-diazecine as a chiral unit to build CPL-active materials.
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Unveiling the intersystem crossing dynamics in N-annulated perylene bisimides.
Phys Chem Chem Phys
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School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram, Kerala, 695551, India.
The efficient population of the triplet excited states in heavy metal-free organic chromophores has been one of the long-standing research problems to molecular photochemists. The negligible spin-orbit coupling matrix elements in the purely organic chromophores and the large singlet-triplet energy gap (Δ) pose a hurdle for ultrafast intersystem crossing (ISC). Herein we report the unprecedented population of triplet manifold in a series of nitrogen-annulated perylene bisimide chromophores (NPBI and Br-NPBI).
View Article and Find Full Text PDFDimerized Nitrogen-Annulated Perylene Synthesized from 1,6-Diazecine as Chiral Emitter.
Chemistry
April 2023
School of Chemistry and Chemical Engineering, Inner Mongolia University, 235 West University Street, Hohhot, 010021, China.
In this work, nitrogen-annulated perylene (NP) was dimerized into one framework connected by two nitrogen atoms, generating the target molecule of DNP-DA. Owing to the substructure of 1,6-diazecine ten-membered ring, DNP-DA illustrates helical chirality with moderate dissymmetry factor, elevated molecular levels, expanded conjugation and supramolecular interactions with acceptors etc. Notably, DNP-DA represents a limited example of nitrogen-perylene based CPL emitter with g around 6×10 .
View Article and Find Full Text PDFSynthesis and Properties of BN-embedded N-Perylene.
Chem Asian J
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School of Chemistry and Chemical Engineering, Inner Mongolia University, 235 West University Street, Hohhot, 010021, P. R. China.
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