Excitation Transfer in Functionalized Carbon Nanotubes

Magadur, Gurvan; Lauret, Jean‐sébastien; Alain-Rizzo, Valérie; Voisin, Christophe; Roussignol, Philippe; Deleporte, Emmanuelle; Delaire, Jacques A.

doi:10.1002/cphc.200800104

Cited by 38 publications

(58 citation statements)

References 26 publications

(49 reference statements)

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“…The spot at (x=1.240 eV, y=2.805 eV) corresponds to absorption on the Soret-band and emission by nanotubes. This brings evidence for excitation energy transfer from the porphyrin to the nanotube: when photons are absorbed by the porphyrin molecules, the luminescence of the nanotube is enhanced [6][7][8]. We assign the PLE feature at an excitation energy of 2.357 eV to EET upon absorption on the porphyrin higher Q band, red shifted of about 50 meV in comparison with free porphyrins.…”

Section: Fig 1: Optical Absorption Spectra Of a Water Suspension Of mentioning

confidence: 74%

“…The PLE map of the nanotube/porphyrin compound suspension is shown in Figure 2b). The spot corresponding to (6,5) nanotubes is red-shifted both in excitation and emission energies. This shift results from a dielectric screening of the excitonic transition by the porphyrin molecules [10].…”

Section: Fig 1: Optical Absorption Spectra Of a Water Suspension Of mentioning

confidence: 99%

“…Therefore usual covalent chemistry, which leads to deep defects formation due to local destruction of the π-electronic system, should be avoided. In contrast, the use of non-covalent chemistry (such as π-stacking interaction) has proven to be compatible with high quality transport and optical properties of the nanotubes [6][7][8]. On the other hand it usually leads to poorly stable compounds [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, the use of non-covalent chemistry (such as π-stacking interaction) has proven to be compatible with high quality transport and optical properties of the nanotubes [6][7][8]. On the other hand it usually leads to poorly stable compounds [6][7][8]. Recently, an original method based on micelle encapsulation of the nanotube/molecule compound has been demonstrated that allows both stability and minimal perturbation to the nanotube properties [8].…”

Section: Introductionmentioning

confidence: 99%

“…In this Letter, we study SWNT/porphyrin compounds which are known for showing EET [6][7][8] and we perform a quantitative investigation of the strength of this coupling in the case of (6,5) nanotubes by measuring the quantum yield and the dynamics of the energy transfer. Purified CoMoCAT nanotubes (SouthWest Nanotechnologies, SG65) containing mainly the (6,5) chirality were functionalized with base-free tetraphenyl porphyrin (TPP) by means of the micelle swelling method (see [8] for details).…”

Section: Introductionmentioning

confidence: 99%

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Quantum efficiency of energy transfer in noncovalent carbon nanotube/porphyrin compounds

Roquelet

Garrot

Lauret

et al. 2010

Applied Physics Letters

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International audienceWe report on the quantum yield of excitation energy transfer in non-covalently bound nan- otube/porphyrin compounds. Evidence for energy transfer is gained from photoluminescence exci- tation experiments. We perform a quantitative evaluation of the transfer quantum yield in the case of (6,5) nanotubes through three independent methods : quantitative PLE measurements, evalu- ation of the luminescence quenching of the donor (porphyrin) and ultrafast transient absorption measurements. The latter shows a tremendous increase of the porphyrin recovery rate upon incor- poration in the compound. All these measurements consistently lead to an exceptional quantum yield efficiency

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Section: Fig 1: Optical Absorption Spectra Of a Water Suspension Of mentioning

confidence: 74%

Section: Fig 1: Optical Absorption Spectra Of a Water Suspension Of mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Quantum efficiency of energy transfer in noncovalent carbon nanotube/porphyrin compounds

Roquelet

Garrot

Lauret

et al. 2010

Applied Physics Letters

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Energy Transfer in Nanotube‐Perylene Complexes

Ernst

Heek

Setaro

et al. 2012

Adv Funct Materials

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A functional surfactant designed to solubilize and individualize nanotubes efficiently in aqueous media and to form energy transfer complexes with the carbon nanotubes through π–π stacking is presented. Upon excitation of the adsorbed perylene unit an emission from the nanotubes is observed that indicates a successful excitation transfer. The efficiency of the indirect excitation via the adsorbant is of the same order of magnitude as the direct excitation of the nanotubes. Under optimized preparation conditions the pH independent perylene-imido-diester compound isolates and solubilizes carbon nanotubes in biocompatible aqueous environments without additional surfactants. The resulting solutions are stable over many months

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New Light on Molecule–Nanotube Hybrids

2019

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Optoelectronics is benefitting from outstanding new nanomaterials providing emission/detection in the whole visible and near infra-red range, photoswitches, two level systems for single photon emission etc. Among these, carbon nanotubes have first been envisioned as game changers while the difficult handling and control over chirality burden their use. However recent breakthroughs on hybrid carbon nanotubes establish nanotubes as pioneers for a new family of building blocks for optics and quantum optics. Functionalization of carbon nanotubes with molecules or polymers not only preserves the nanotube properties from the environment, but also provides new performance to the resulting hybrids. Photoluminescence and Raman signals are enhanced in the hybrids which questions the nature of the electronic coupling between nanotube and molecules. Furthermore, coupling to optical cavities enhances dramatically single photon emission which operates up to room temperature. This new light on nanotube hybrids shows their potential to push optoelectronics a step forward.

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Excitation Transfer in Functionalized Carbon Nanotubes

Cited by 38 publications

References 26 publications

Quantum efficiency of energy transfer in noncovalent carbon nanotube/porphyrin compounds

Quantum efficiency of energy transfer in noncovalent carbon nanotube/porphyrin compounds

Energy Transfer in Nanotube‐Perylene Complexes

New Light on Molecule–Nanotube Hybrids

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