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Updated: Dec 25, 2025
06:44
From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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Nucleation Control-Triggering Cocrystal Polymorphism of Charge-Transfer Complexes Differing in Physical and
Jianqun Jin1, Shanyu Wu2, Yudong Ma1
1Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
ACS Applied Materials & Interfaces
|April 4, 2020
Summary
Researchers developed novel binary charge-transfer complex polymorphs using perylene and DTTCNQ. These materials exhibit distinct thermosalient properties and tunable optoelectronic characteristics for advanced functional devices.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Organic Electronics
Background:
- Binary charge-transfer complexes are crucial for organic electronics.
- Controlling polymorphism is key to tuning material properties.
- Perylene and DTTCNQ are established components for charge-transfer complexes.
Purpose of the Study:
- To synthesize and characterize distinct polymorphs of perylene-DTTCNQ binary charge-transfer complexes.
- To investigate the influence of nucleation methods on polymorphism and self-assembly.
- To correlate structural variations with optoelectronic properties.
Main Methods:
- Artificial nucleation-tailoring for controlled synthesis of polymorphs.
- Macroscopic and microscopic cocrystal engineering.
- Solid-state characterization of thermosalient behavior.
- Analysis of charge-transfer and supramolecular alignment.
Main Results:
- Two distinct polymorphs (α and β) of perylene-DTTCNQ complexes were successfully synthesized.
- Both polymorphs exhibited independent thermosalient behavior.
- The β-complex showed high n-type transport and photoresponsivity, while the α-complex displayed ambipolar transport.
- Differences in optoelectronic properties were attributed to varied charge-transfer and supramolecular arrangements.
Conclusions:
- A novel route for developing functional donor-acceptor complexes through controlled polymorphism was established.
- Variable supramolecular binary structures offer pathways for designing new materials and devices.
- The study highlights the importance of nucleation control in achieving desired material properties.
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