These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
2 files

Cycloparaphenylene-Norbornene Monomers Afford Access to Carbon Nanohoop-Based Polymers

submitted on 30.09.2019, 19:54 and posted on 02.10.2019, 19:53 by Ruth Maust, Penghao Li, Lev N. Zakharov, Ramesh Jasti
Although impressive strides have been made toward achieving precise polymer architectures, the pursuit of monomers with diverse structures and functions remains a critical challenge for polymer design. Herein we disclose the first polymers constructed from cycloparaphenylenes (CPPs), a family of strained, pi-rich macrocycles. Poly-CPPs were prepared via ring-opening metathesis polymerization (ROMP) of benzonorbornene-embedded CPPs. The distinctive size-dependent properties of CPPs, including fluorescence and host-guest chemistry, are preserved in poly-CPPs, offering a means to capitalize on these properties in polymeric materials. Moreover, copolymerizing CPPs of two different diameters results in polymers with emergent photophysical and supramolecular properties not achievable with small molecule CPP units. This work sets the stage for CPP derivatives to serve as molecular building blocks for the next generation of functional polymers.


National Science Foundation Graduate Research Fellowship under Grant No. 1309047

Department of Energy Grant No. DE-SC0019017


Email Address of Submitting Author


University of Oregon



ORCID For Submitting Author


Declaration of Conflict of Interest

The authors declare no conflict of interest.


Logo branding