Limits...
Non-covalent polymer wrapping of carbon nanotubes and the role of wrapped polymers as functional dispersants

View Article: PubMed Central - PubMed

ABSTRACT

Carbon nanotubes (CNTs) have been recognized as a promising material in a wide range of applications from biotechnology to energy-related devices. However, the poor solubility in aqueous and organic solvents hindered the applications of CNTs. As studies have progressed, the methodology for CNT dispersion was established. In this methodology, the key issue is to covalently or non-covalently functionalize the surfaces of the CNTs with a dispersant. Among the various types of dispersions, polymer wrapping through non-covalent interactions is attractive in terms of the stability and homogeneity of the functionalization. Recently, by taking advantage of their stability, the wrapped-polymers have been utilized to support and/or reinforce the unique functionality of the CNTs, leading to the development of high-performance devices. In this review, various polymer wrapping approaches, together with the applications of the polymer-wrapped CNTs, are summarized.

No MeSH data available.


Schematic for the coating of the CNT sponge by PPy and the successive loading of MnO2. Reprinted with permission from P Li et al 2014 ACS Appl. Mater. Interfaces6 5228. Copyright 2014 American Chemical Society.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
getmorefigures.php?uid=PMC5036478&req=5

Figure 28: Schematic for the coating of the CNT sponge by PPy and the successive loading of MnO2. Reprinted with permission from P Li et al 2014 ACS Appl. Mater. Interfaces6 5228. Copyright 2014 American Chemical Society.

Mentions: For supercapacitor applications, conducting polymers wrapped on CNTs serve to increase the specific capacitance [342–344]. In these examples, PPy and PANI were often used owing to the ease of wrapping via either chemical or electrochemical polymerization on the surfaces of the CNTs. The recent trend is the additional functionalization with a metal oxide, such as MnO2, on the polymer-wrapped CNTs to further increase the specific capacitance [345]. A representative example demonstrated by Li et al is the coating of a CNT 3D network (CNT sponge) via electropolymerization of PPy, followed by the MnO2 loading by hydrothermal synthesis (figure 28) [346]. Such a ternary system showed the synergetic effect of the components and long cycling life stability [346, 347].


Non-covalent polymer wrapping of carbon nanotubes and the role of wrapped polymers as functional dispersants
Schematic for the coating of the CNT sponge by PPy and the successive loading of MnO2. Reprinted with permission from P Li et al 2014 ACS Appl. Mater. Interfaces6 5228. Copyright 2014 American Chemical Society.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC5036478&req=5

Figure 28: Schematic for the coating of the CNT sponge by PPy and the successive loading of MnO2. Reprinted with permission from P Li et al 2014 ACS Appl. Mater. Interfaces6 5228. Copyright 2014 American Chemical Society.
Mentions: For supercapacitor applications, conducting polymers wrapped on CNTs serve to increase the specific capacitance [342–344]. In these examples, PPy and PANI were often used owing to the ease of wrapping via either chemical or electrochemical polymerization on the surfaces of the CNTs. The recent trend is the additional functionalization with a metal oxide, such as MnO2, on the polymer-wrapped CNTs to further increase the specific capacitance [345]. A representative example demonstrated by Li et al is the coating of a CNT 3D network (CNT sponge) via electropolymerization of PPy, followed by the MnO2 loading by hydrothermal synthesis (figure 28) [346]. Such a ternary system showed the synergetic effect of the components and long cycling life stability [346, 347].

View Article: PubMed Central - PubMed

ABSTRACT

Carbon nanotubes (CNTs) have been recognized as a promising material in a wide range of applications from biotechnology to energy-related devices. However, the poor solubility in aqueous and organic solvents hindered the applications of CNTs. As studies have progressed, the methodology for CNT dispersion was established. In this methodology, the key issue is to covalently or non-covalently functionalize the surfaces of the CNTs with a dispersant. Among the various types of dispersions, polymer wrapping through non-covalent interactions is attractive in terms of the stability and homogeneity of the functionalization. Recently, by taking advantage of their stability, the wrapped-polymers have been utilized to support and/or reinforce the unique functionality of the CNTs, leading to the development of high-performance devices. In this review, various polymer wrapping approaches, together with the applications of the polymer-wrapped CNTs, are summarized.

No MeSH data available.