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Title: Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies

Abstract

A versatile and highly tunable synthesis for nanofiber aerogels based on the n-type organic semiconductor perylene tetracarboxylic diimide (PTCDI) is presented. PTCDI nanofiber aerogels are demonstrated to incorporate the organic semiconductor into a high surface area and porous morphology, and can also be graphitized to synthesize carbon nanofiber (CNF) aerogels by thermal annealing. Using this approach, CNF aerogels with variable density and crystallinity are synthesized. Furthermore, by incorporating metal salts into the synthesis, metal-directed assembly yields a variety of nanoscale morphologies. The selection of post-synthesis thermal treatment can result in metal-directed assembly of PTCDI aerogels, low crystallinity graphitic aerogels decorated with metal nanoparticles, or highly crystalline graphitic aerogels with controllable nanoscale morphologies. The high surface area and porosity afforded by the aerogel morphology coupled with the intrinsic properties of PTCDI or CNFs is important for improving their performance in a number of applications including energy storage and catalysis.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [4];  [5];  [5];  [6];  [7]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry, Dept of Physics, and Kavli Energy NanoSciences Institute; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States). Dept. of Physics, and Kavli Energy NanoSciences Institute; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  3. Univ. of California, Berkeley, CA (United States). Dept. of Physics, and Kavli Energy NanoSciences Institute; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physical and Life Science Directorate
  7. Univ. of California, Berkeley, CA (United States). Dept. of Physics, and Kavli Energy NanoSciences Institute; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Div.
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1559260
Alternate Identifier(s):
OSTI ID: 1545387
Grant/Contract Number:  
AC02-05CH11231; KC2207; AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 153; Journal Issue: C; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Turner, Sally, Shevitski, Brian, Long, Hu, Lorenzo, Maydelle, Marquez, James, Aloni, Shaul, Altoe, Virginia, Worsley, Marcus A., and Zettl, Alex. Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies. United States: N. p., 2019. Web. doi:10.1016/j.carbon.2019.07.039.
Turner, Sally, Shevitski, Brian, Long, Hu, Lorenzo, Maydelle, Marquez, James, Aloni, Shaul, Altoe, Virginia, Worsley, Marcus A., & Zettl, Alex. Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies. United States. doi:10.1016/j.carbon.2019.07.039.
Turner, Sally, Shevitski, Brian, Long, Hu, Lorenzo, Maydelle, Marquez, James, Aloni, Shaul, Altoe, Virginia, Worsley, Marcus A., and Zettl, Alex. Fri . "Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies". United States. doi:10.1016/j.carbon.2019.07.039.
@article{osti_1559260,
title = {Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies},
author = {Turner, Sally and Shevitski, Brian and Long, Hu and Lorenzo, Maydelle and Marquez, James and Aloni, Shaul and Altoe, Virginia and Worsley, Marcus A. and Zettl, Alex},
abstractNote = {A versatile and highly tunable synthesis for nanofiber aerogels based on the n-type organic semiconductor perylene tetracarboxylic diimide (PTCDI) is presented. PTCDI nanofiber aerogels are demonstrated to incorporate the organic semiconductor into a high surface area and porous morphology, and can also be graphitized to synthesize carbon nanofiber (CNF) aerogels by thermal annealing. Using this approach, CNF aerogels with variable density and crystallinity are synthesized. Furthermore, by incorporating metal salts into the synthesis, metal-directed assembly yields a variety of nanoscale morphologies. The selection of post-synthesis thermal treatment can result in metal-directed assembly of PTCDI aerogels, low crystallinity graphitic aerogels decorated with metal nanoparticles, or highly crystalline graphitic aerogels with controllable nanoscale morphologies. The high surface area and porosity afforded by the aerogel morphology coupled with the intrinsic properties of PTCDI or CNFs is important for improving their performance in a number of applications including energy storage and catalysis.},
doi = {10.1016/j.carbon.2019.07.039},
journal = {Carbon},
number = C,
volume = 153,
place = {United States},
year = {2019},
month = {11}
}

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This content will become publicly available on November 1, 2020
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