Amphiphilic Peptoid–Directed Assembly of Oligoanilines into Highly Crystalline Conducting Nanotubes

Li, Zhiliang; Tran, Duyen K.; Nguyen, Mary; Jian, Tengyue; Yan, Feng; Jenekhe, Samson A.; Chen, Chun‐Long

doi:10.1002/marc.202100639

Amphiphilic Peptoid–Directed Assembly of Oligoanilines into Highly Crystalline Conducting Nanotubes

Journal Article · Mon Jan 17 00:00:00 EST 2022 · Macromolecular Rapid Communications

DOI:https://doi.org/10.1002/marc.202100639· OSTI ID:1841373

^[1]; Tran, Duyen K. ^[2]; Nguyen, Mary ^[2]; Jian, Tengyue ^[3]; Yan, Feng ^[4]; ^[2]; ^[5]

Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Pacific Northwest National Laboratory
Univ. of Washington, Seattle, WA (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Linyi Univ., Shandong Province (China)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Univ. of Washington, Seattle, WA (United States)

It is reported herein the synthesis of a novel amphiphilic diblock peptoid bearing a terminal conjugated oligoaniline and its self-assembly into small-diameter (D ≈ 35 nm) crystalline nanotubes with high aspect ratios (>30). It is shown that both tetraaniline (TANI)-peptoid and bianiline (BANI)-peptoid triblock molecules self-assemble in solution to form rugged highly crystalline nanotubes that are very stable to protonic acid doping and de-doping processes. The similarity of the crystalline tubular structure of the nanotube assemblies revealed by electron microscopy imaging, and X-ray diffraction analysis of the nanotube assemblies of TANI-functionalized peptoids and nonfunctionalized peptoids showed that the peptoid is an efficient ordered structure directing motif for conjugated oligomers. Films of doped TANI-peptoid nanotubes has a dc conductivity of ca. 95 mS cm^–1, while the thin films of doped un-assembled TANI-peptoids show a factor of 5.6 lower conductivity, demonstrating impact of the favorable crystalline ordering of the assemblies on electrical transport. Furthermore, these results demonstrate that peptoid-directed supramolecular assembly of tethered π-conjugated oligo(aniline) exemplify a novel general strategy for creating rugged ordered and complex nanostructures that have useful electronic and optoelectronic properties.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Washington, Seattle, WA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231; AC05-76RL01830; SC0019288

OSTI ID:: 1841373

Alternate ID(s):: OSTI ID: 1840643

Journal Information:: Macromolecular Rapid Communications, Journal Name: Macromolecular Rapid Communications Journal Issue: 4 Vol. 43; ISSN 1022-1336

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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