Effect of distance between acceptor and donor on optical properties of composite semiconducting polymer films

Kong, Fantao; Liu, Jing; Zhang, Xueqin; An, Yan; Li, Xiaofeng; Lin, Baoping; Qiu, Teng

doi:10.1016/j.jlumin.2010.12.009

Cited by 11 publications

(2 citation statements)

References 28 publications

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“…The average R o was 77.54 Å, which confirmed the domination of non-radiative energy transfer (Förster type) in the blends, where the Förster type is typically effective in the range of 10-100 Å [25,26]. Subsequently, as reported by other researchers, this finding confirms the suitability of Förster theory for calculating the energy transfer parameters [27][28][29]. Moreover, the non-radiative energy transfer parameters of the A/D system can be calculated by analyzing its absorption and emission spectra.…”

Section: Energy Transfer Mechanismsupporting

confidence: 84%

Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

2020

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Composite materials with different concentration ratios of a hybrid of zero-dimensional (0-D) Cs4PbBr6 perovskite, which acts as a donor (D), and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), which acts as an acceptor (A), were successfully prepared via a solution blending method prior to being deposited onto glass substrates by a spin-coating technique. The influence of acceptor content on the structural, optical, and energy transfer properties of the donor was investigated. The perovskite nanocrystals formed thin films without any chemical interactions within a matrix of MEH-PPV in the blend. The possibility of dipole–dipole (non-radiative) energy transfer from the 0-D Cs4PbBr6 to the MEH-PPV was proven. The energy transfer parameters such as Ro (critical distance of the energy transfer), kapp (apparent quenching constant), ∅ D A (quantum yield of D in the presence of A), τ D A (lifetime of D in the presence of A), PDA (probability of energy transfer), η (efficiency of energy transfer), RDA (energy transfer radius), kET (energy transfer rate constant), TDR (total decay rate), Ao (critical concentration of A), and Aπ (conjugation length) were calculated based on the absorption and emission measurements.

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Section: Energy Transfer Mechanismsupporting

confidence: 84%

Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

2020

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“…Because of this the effective energy transfer (based on Foster theory) would take place from chitosan molecular energy levels to defect states which get further enhanced with increase in concentration of chitosan (0.01 to 1.0%) on surface (Fig-6(b) and 6(c)). Kong et al 28 have also studied effect of distance between acceptor and donor on optical properties of composite semiconducting polymer films. They have shown that energy transfer efficiencies calculated from time resolved PL spectra are consistent with calculated from emission spectra of donor with and without acceptor.…”

Section: Luminescence Studiesmentioning

confidence: 99%

Tunable emission in surface passivated Mn-ZnS nanophosphors and its application for Glucose sensing

et al. 2012

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The present work describes the tunable emission in inorganic-organic hybrid NPs which can be useful for optoelectronic and biosensing applications. In this work, Mn-ZnS nanoparticles emitting various colors, including blue and orange, were synthesized by simple chemical precipitation method using chitosan as a capping agent. Earlier reports describe that emission color characteristics in nanoparticles are tuned by varying particle size and with doping concentration. Here in this article tunable emission has been achieved by varying excitation wavelength in a single sample. This tunable emission property with high emission intensity was further achieved by changing capping concentration keeping host Mn-ZnS concentration same. Tunable emission is explained by FRET mechanism. Commission Internationale de l'Eclairage (CIE) chromaticity coordinates shifts from (0.273, 0.20) and (0.344, 0.275) for same naocrystals by suitably tuning excitation energy from higher and lower ultra-violet (UV) range. Synthesized nanoparticles have been characterized by X-ray diffraction, SEM, HRTEM, UV-Visible absorption and PL spectroscopy for structural and optical studies. Using tunable emission property, these highly emissive nanoparticles functionalized with biocompatible polymer chitosan were further used for glucose sensing applications. Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License.

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Enhanced emission from Alq₃ in amphiphilic block copolymers PEG‐b‐PVK‐co‐Alq₃ synthesized via RAFT polymerization

Fang

Kong

Zhang

et al. 2016

J of Applied Polymer Sci

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A series of amphiphilic poly(N-vinyl carbazole) (PVK) block copolymers containing tris(8-hydroxyquinoline) aluminum (Alq 3 ) have been synthesized via reversible addition-fragmentation chain transfer (RAFT) radical polymerization with trithiocarbonate terminated polyethylene glycol (PEG) as a RAFT agent. The chemical structures of the block copolymers have been identified by 1 H nuclear magnetic resonance and Fourier transform infrared spectrometer. The analysis of gel permeation chromatography indicates that the polydispersity indices of the block copolymers are lower than 1.30. The results of thermogravimetric analysis show that the decomposition temperatures of the copolymers are higher than 330 8C. The optical properties of the copolymers have been investigated and the obviously enhanced emission from Alq 3 has been found due to resonance energy transfer from PVK to Alq 3 . V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44573.

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Effect of distance between acceptor and donor on optical properties of composite semiconducting polymer films

Cited by 11 publications

References 28 publications

Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

Tunable emission in surface passivated Mn-ZnS nanophosphors and its application for Glucose sensing

Enhanced emission from Alq₃ in amphiphilic block copolymers PEG‐b‐PVK‐co‐Alq₃ synthesized via RAFT polymerization

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Effect of distance between acceptor and donor on optical properties of composite semiconducting polymer films

Cited by 11 publications

References 28 publications

Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

Tunable emission in surface passivated Mn-ZnS nanophosphors and its application for Glucose sensing

Enhanced emission from Alq3 in amphiphilic block copolymers PEG‐b‐PVK‐co‐Alq3 synthesized via RAFT polymerization

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Enhanced emission from Alq₃ in amphiphilic block copolymers PEG‐b‐PVK‐co‐Alq₃ synthesized via RAFT polymerization