Self-Assembly Rules of Dumbbell-Shaped Molecules and Their Effect on Morphology and Photophysical Behaviors of Micro/Nanocrystals
| Autor: | Yin-Xiang Li, Changjin Ou, Ling-Zhi Jin, Xuehua Ding, Linghai Xie, Rong Rong, Wei Huang, Sha-Sha Wang, Ying Wei |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Morphology (linguistics) Supramolecular chemistry 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Dumbbell shaped Crystallography Nanocrystal Molecule General Materials Science Self-assembly 0210 nano-technology |
| Zdroj: | Crystal Growth & Design. 18:4822-4828 |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.8b00652 |
| Popis: | The dumbbell-shaped molecule is a crucial model in the organic optoelectronic field, but its molecular structure–morphology–property relationships are still unclear. In this work, we have identified the relationships relying on four dumbbell-shaped diarylfluorene derivatives through rationally modifying their two molecular segments: supramolecular bulky group (SBG) and core linkage (CL). By decreasing the bulky degree of SBG or lengthening the CL, a remarkable nanocrystal morphology transformation from 2D to 1D was observed. Morphology characterizations and supramolecular analysis show that the conversion of molecular packing mode from the slipped-layer motif to herringbone is responsible for the morphology transformation. Further disassembly investigation and calculation revealed the inner influence rules of SBG and CL segments on molecular arrangement and morphology. Finally, the proof-of-concept laser oscillators were fabricated based on the regular 2D sheet and 1D wire, and their different thresholds ... |
| Databáze: | OpenAIRE |
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