Enhanced photoinduced electron transfer by multiwalled carbon nanotubes in self-assembled terpyridine polymer networks

Jeong, Dong−Cheol; Song, Sun Gu; Satheeshkumar, Chinnadurai; Lee, Yun-Mi; Kim, Kyung‐su; Song, Changsik

doi:10.1016/j.polymer.2015.05.036

Cited by 5 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is believed that this new band is attributed to charge transfer creation [ 57 ]. If there is compatibility between the diffusion length and the nano-junction size, the created electron–hole pairs after photo-excitation can be easily transferred to SWCNTs, as already reported for other polymer/SWCNT nano-composites [ 72 ]. This charge transfer is the major parameter leading to improved photovoltaic characteristics [ 73 ].…”

Section: Resultsmentioning

confidence: 67%

Polyaniline: Doping and Functionalization with Single Walled Carbon Nanotubes for Photovoltaic and Photocatalytic Application

et al. 2021

View full text Add to dashboard Cite

Polyaniline (PANI) was chemically doped and functionalized with single walled carbon nanotubes (SWCNTs). Various characterization methods were employed to study the structure and optical properties of PANI/SWCNTs nanocomposite, such as Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), optical absorption, and stationary photoluminescence. Additionally, a theoretical study using density functional theory calculations was also carried out. It has been demonstrated that the doping process may reduce the band gap without affecting the molecular structure, leading to a better compatibility with the solar spectrum. Moreover, the functionalization process with SWCNTs was able to significantly improve the properties of the resulting nanocomposite. The final interpenetrating network of PANI/SWCNTs exhibited an optical gap of nearly 2.28 eV, from which localized states induced by the charge transfer were created at nearly 1.70 eV. In addition, the resulting donor–acceptor network leads to a separation of electron holes pairs rather than their recombination, which can be used as an active layer in photovoltaic applications and a photocatalyst for advanced oxidation processes.

show abstract

Section: Resultsmentioning

confidence: 67%

Polyaniline: Doping and Functionalization with Single Walled Carbon Nanotubes for Photovoltaic and Photocatalytic Application

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Although there have been some literature, including ours, reporting the LbL-assembled photosynthetic electrodes that integrate defective nanocarbons with other photoactive materials, the role of the nanocarbons was generally restricted to the facilitation of the electron transfer (see Table S1 in the Supporting Information). − In addition, their performance of photocurrent generation was still too low to meet any practical application and further study is needed to design the promising photocatalytic redox reaction (e.g., overall water splitting). The use of bifunctional photoelectrodes can thus lead to improved practical benefits; however, so far, only a limited number of studies have been reported on the bifunctionality of the photocatalytic LbL multilayer electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…Here, we demonstrate a unique hybrid bifunctional multilayer photoelectrode composed of nanoscale graphene oxide (nGO) and a terpyridine complex of ruthenium(II) (TPY 2 Ru) for overall water splitting reaction in benign conditions (Scheme ). To construct an efficient PEC system for water splitting, we introduced a TPY 2 Ru to harvest visible light to generate more photoinduced electrons , as well as nGO to provide photoactive sites for water splitting in the multilayer photoelectrode. The finely hybridized multilayer photoelectrode, using LbL assembly, combines the outstanding properties of each component and provides a synergistic effect for an efficient water splitting reaction.…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Water Splitting Photoelectrocatalysts Using Flexible Organometallic Complex and Nanographene Multilayer Thin Films

Kim

Choi

et al. 2020

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

In comparison with conventional inorganic photocatalysts, organic photoactive materials are promising photocatalysts owing to their high extinction coefficient and chemical tunability. However, their limited photocatalytic activity, induced by a low relative permittivity with high recombination energy, poses significant challenges. Herein, a highly efficient bifunctional photocatalytic hybrid multilayer electrode is designed by a versatile layer-by-layer (LbL) assembly of nanoscale graphene oxide (nGO) and a ruthenium–terpyridine coordination complex (TPY2Ru). We exploited a synergistic effect between two active components, namely, the generation of photoinduced excitons by TPY2Ru and the facilitation of electron transfer by reducing the recombination rate of the generated electrons by nGO in hybrid electrodes. This photocatalytic electrode exhibits bifunctional activities for water splitting in neutral condition with the highest photoanodic current density of 4.28 μA/cm2 at 1.23 V versus a reversible hydrogen electrode (RHE) and a photocathodic current density of 28.42 μA/cm2 at 0 V versus RHE. Furthermore, the unique combination of hybrid materials enables the development of flexible photocatalytic electrodes with remarkable current density retention after a 1000-cycle durability test. Because of the highly tunable properties of the LbL-assembled multilayer electrodes, we anticipate that this strategy can offer insights into the nanoscale-architecture-controlled engineering of efficient photoelectrodes for future solar-fuel energy devices.

show abstract

Effect of multiwalled carbon nanotube-grafted polymer brushes on the mechanical and swelling properties of polyacrylamide composite hydrogels

Tang

Dai

et al. 2016

Polymer

View full text Add to dashboard Cite

Enhanced photoinduced electron transfer by multiwalled carbon nanotubes in self-assembled terpyridine polymer networks

Cited by 5 publications

References 31 publications

Polyaniline: Doping and Functionalization with Single Walled Carbon Nanotubes for Photovoltaic and Photocatalytic Application

Polyaniline: Doping and Functionalization with Single Walled Carbon Nanotubes for Photovoltaic and Photocatalytic Application

Bifunctional Water Splitting Photoelectrocatalysts Using Flexible Organometallic Complex and Nanographene Multilayer Thin Films

Effect of multiwalled carbon nanotube-grafted polymer brushes on the mechanical and swelling properties of polyacrylamide composite hydrogels

Contact Info

Product

Resources

About