Conjugated polymer P3HT–Au hybrid nanostructures for enhancing photocatalytic activity

Jana, Bikash; Bhattacharyya, Santanu; Patra, Amitava

doi:10.1039/c5cp01769f

Cited by 59 publications

(47 citation statements)

References 42 publications

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“…Among aggregates, H-aggregate nanostructures are more reproduced from ref. [57] with permission from the PCCP Owner Society. (D) Bleach recovery kinetics of (a) large-sized CdTe QDs and (b) hybrid; adapted with permission from ref.…”

Section: Self-assembled Molecules For Efficient Antenna Materials In mentioning

confidence: 99%

Perspective of dye-encapsulated conjugated polymer nanoparticles for potential applications

2018

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Design of highly luminescent nanomaterials is an emerging area of research for photonic and bio-photonic applications. Nowadays, dye-encapsulated polymer nanoparticles (PNPs) are found to be very promising alternative nextgeneration luminescent nanomaterials because of extraordinary brightness, easy synthesis, higher photo-stability and nontoxic behaviour. Herein, we have highlighted the dynamics of the fluorophore molecules inside PNPs. Furthermore, we discuss the fundamental correlation of particle brightness with the size of the PNPs as well as population of the dye molecules inside the PNPs. Considering the resonance energy transfer process, generation of white light by varying the dye concentration and singlet oxygen generation using photosensitizer dye have been described. Finally, we discuss the importance of hybrids of conjugated PNPs for potential light harvesting systems such as photovoltaic and optoelectronic applications.

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Section: Self-assembled Molecules For Efficient Antenna Materials In mentioning

confidence: 99%

Perspective of dye-encapsulated conjugated polymer nanoparticles for potential applications

2018

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“…Again, the gradual red shift of absorption band from 495 nm to 508 nm is obtained (Figure C) after addition of 5 n m Au NPs with MEH‐PPV PNP. The red shifting and the broadening of absorption band for hybrid system suggest the electronic interaction between Au nanoparticles and polymer nanoparticles . The PL peak at 554 nm is observed for MEH‐PPV polymer in THF solution after excitation at 400 nm (Figure S1).…”

Section: Resultsmentioning

confidence: 99%

“…Materials and Synthesis : Preparation of MEH‐PPV PNPs, Au NP was carried out according to the methods described elsewhere . Briefly, the details have been provided in supporting information.…”

Section: Methodsmentioning

confidence: 99%

“…Generally, the favourable band gap alignment between electron donor‐acceptor materials is required for efficient charge separation. It is known that the metal nanoparticles (specially Au nanoparticles based hybrid systems) are being used for electron acceptor material for better charge separation . In case of polymer‐metal nanoparticles hybrid systems, the excited electron can be transferred from S 1 state of polymer molecule to metal nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

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Ultrafast Relaxation Processes of Conjugated Polymer Nanoparticles in the Presence of Au Nanoparticles

Ghosh

Jana

et al. 2019

Chemistry An Asian Journal

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Considering the importance of conjugated polymer nanoparticles, major emphasis has been given for designing and understandingt he energy transfer and charge transfer processes of organic-inorganic hybridsf or light harvesting applications.I nt he present study, we have designed an aqueous solution-based light harvesting system using conjugatedp olymer nanoparticles (poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene],M EH-PPV) and Au nanoparticles. The change in photo-induced processes in the presence of metal nanoparticles are studied by steady-state absorption,t ime-resolved emission, time-resolved fluorescence up-conversion,u ltrafasta nisotropy and femtosecond transient absorption spectroscopy.G lobal and target analysis of transienta bsorption data validate the creation of ac ollective delocalized state in polymer nanoparticles, and the time scale for excitation energy funnelling from S 1 state to low lying collective delocalized state (CL s )i s1 8ps. Then, the electron transfer from the CL s state to Au NP occurs with a time constant of 150 ps. The 815 ps long lived charget ransfer (CT) state signifies the charget ransfer from the CL s state of polymer nanoparticles to Au NP.S uch basic understanding of relaxationp rocesses in hybrid systems is very important for designing inorganic-organic hybrid light-harvesting systems.

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“…The sample was finally dispersed in 5.0 mL of water with vigorous stirring for 2.0 h at different temperatures. The hydrophobic polymer molecules coiled up to form spherical particles to prevent with the polar aqueous environment at the surface of the AuNPs . As shown in Figure (a), the P3HT‐S‐AuNP Janus nanoparticles were formed at 20 °C with inhomogeneous polymer nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Preparation at the water–oil interface of Janus composite nanoparticles and their photoelectric properties

Qiao

Zhang

et al. 2017

J of Applied Polymer Sci

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A series of Janus composite poly(3-hexyl thiophene)-b-poly(3-thiophenehexanethiol)-gold nanoparticles were synthesized by self-assembly at the water-oil interface, and their photoelectric performance was investigated. The results show that the precise Janus composite nanostructure could be controlled by the adjustment of the reaction temperature and stirring time. The UV-visible measurement revealed that the absorption maximum had an appreciable redshift, and the photoluminescence (PL) spectra indicated that the PL intensity of poly(3-hexyl thiophene)-b-poly[3-(6-thiolhexyl thiophene)] decreased upon the addition of gold nanoparticles. In addition, compared to a common composite of poly(3-hexyl thiophene), the conductivity properties of the Janus composite nanostructure increased remarkably. Therefore, the Janus composite nanoparticles have the potential for applications in photovoltaic devices.

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Conjugated polymer P3HT–Au hybrid nanostructures for enhancing photocatalytic activity

Cited by 59 publications

References 42 publications

Perspective of dye-encapsulated conjugated polymer nanoparticles for potential applications

Perspective of dye-encapsulated conjugated polymer nanoparticles for potential applications

Ultrafast Relaxation Processes of Conjugated Polymer Nanoparticles in the Presence of Au Nanoparticles

Preparation at the water–oil interface of Janus composite nanoparticles and their photoelectric properties

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