Efficient deep blue emission by 4-styrylbenzonitrile derivatives in solid state: Synthesis, aggregation induced emission characteristics and crystal structures
| Autor: | Yuanyuan Meng, Kun-Peng Wang, Chunming Yuan, Zhi-Qiang Hu, Ying Fang, Shaojin Chen, Chunhui Du |
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| Rok vydání: | 2022 |
| Předmět: |
chemistry.chemical_classification
Luminescence Molecular Structure Molecular Conformation Crystal structure Photochemistry Fluorescence Atomic and Molecular Physics and Optics Analytical Chemistry chemistry Intramolecular force Molecule Non-covalent interactions Quantum efficiency Organic Chemicals Instrumentation Single crystal Spectroscopy |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 267:120575 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2021.120575 |
| Popis: | Organic fluorescent molecules with π-conjugated system have shown great importance in numerous applications including bioimaging and optoelectronics. Planar aggregation-induced emissive (AIE) organic compounds with efficient solid-state luminescence are rarely developed and urgently needed in various applications. In this work, highly planar 4-styrylbenzonitrile derivatives have been synthesized. Most of these compounds show strong AIE properties with hundred-fold fluorescent enhancement. Moreover, these molecules are deep blue emissive in solid state, exhibiting good to excellent fluorescence quantum efficiency. The single crystal analysis shows that adjacent molecules could form special J-type aggregation. The intramolecular rotations are efficiently restricted by various noncovalent interactions. These molecular arrangements could be essential for the observed strong emission in aggregated and solid state. This work has paved a new path to efficient AIE-active organic emitters with highly planar conformations from 4-styrylbenzonitrile structure. |
| Databáze: | OpenAIRE |
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