CBE Seminar - Unlocking Single-Chirality Carbon Nanotubes with DNA for Novel Functions and Applications
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Single-walled carbon nanotubes (CNTs) have attracted significant attention due to their unique nanostructures and exceptional properties. However, commercially available CNTs typically contain a mixture of tens of different chiralities, which limit their applications in advanced technologies. To address this challenge, we leverage the sequence-dependent interactions between DNA and CNTs, allowing for the selective recognition of CNTs with specific chiralities. This approach enables the efficient separation of over 20 distinct types of single-chirality CNTs (scCNTs). These well-defined scCNTs exhibit enhanced properties compared to chirality-mixed CNTs. More importantly, by precisely controlling the ordered DNA structures assembling on scCNTs, we design DNA-scCNT hybrids with tailored functionalities. These materials have led to promising applications across various fields. This presentation will focus on: (1) the technological innovations and mechanisms behind scCNT separation using DNA; (2) the application of DNA-scCNTs in biosensing and disease diagnostics; (3) the development of organic quantum materials using DNA-scCNTs.
Zhiwei Lin is a Professor in School of Emergent Soft Matter, South China University of Technology. He received Ph.D. in Polymer Science from The University of Akron, followed by postdoctoral research at Columbia University and the U.S. National Institute of Standards and Technology (NIST). His research focuses on the development of novel hybrid materials, integrating carbon nanotubes, DNA, and polymers. He is the awardee of NSFC Excellent Young Scientists (2022), China’s Emerging Tech Stars (2022), and the Xiaomi Young Talent Scholars Award (2023).