Optimization of energy transfer in a polymer composite with perylene chromophores

Yasarapudi, Vineeth B.; Frazer, Laszlo; Davis, Nathaniel J. L. K.; Booker, Edward P.; Macmillan, Alexander; Gallaher, Joseph K.; Roberts, Derrick A.; Perrier, Sébastien; Schmidt, Timothy W.

doi:10.1039/c8tc02457j

Cited by 9 publications

(12 citation statements)

References 46 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent decades, researchers have attempted to create efficient light-harvesting antenna complexes. − More recently, research studies have begun mimicking the energy cascade systems found in natural photon-driven structures. These systems aim to separate absorption and emission events via transferring energy from an accepter to an emitter through an energy-transfer process, such as the Förster resonance energy transfer (FRET). − This has been achieved in both semiconductor heterostructured quantum dots and rods − and organic dye systems. ,− We propose the creation of a hybrid organic/inorganic light-harvesting complex via the attachment of organic chromophore ligands to a semiconductor nanocrystal.…”

Section: Introductionmentioning

confidence: 99%

Energy Transfer between Perylene Diimide Based Ligands and Cesium Lead Bromide Perovskite Nanocrystals

et al. 2020

Self Cite

View full text Add to dashboard Cite

The creation of light-harvesting antenna complexes offers numerous potential applications in the field of optoelectronics. Cesium lead halide nanocrystals, specifically, are beginning to show great promise for optoelectronic applications due to their thermal stability and bright luminescence. As per the majority of all colloidally stable nanocrystals, they process surface-bound ligands that offer stability and surface state passivation. By replacing these ligands with organic chromophores various energy interactions can be observed, leading to a greater variety of potential applications. In this paper, we show enhanced emission in red and orange perylene diimide organic dye ligands through the transfer of energy harvested by CsPbBr 3 nanocrystals. This has been demonstrated via steady-state and time-resolved fluorescence measurements and has a great potential for spectral management through energy-transfer interactions in hybrid light-harvesting systems. We estimate the Forster resonance energy-transfer efficiencies of up to 65 and 45% for perylene orange ligand surface loadings of 0.25 nm −2 and perylene red ligand surface loadings 0.12 nm −2 , respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Energy Transfer between Perylene Diimide Based Ligands and Cesium Lead Bromide Perovskite Nanocrystals

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“… 20 , 45 − 49 The excimer-state emission generally comes from PDIs that exhibit H-aggregate formation facilitated by the addition of bulky groups attached to the imide positions of the PDI. 44 , 48 , 50 Understanding the formation of these low-energy excimer states in molecular aggregates is of great interest 11 , 51 , 52 as it could allow for increased functionality, stability, and device performance. The excimer state can act as an exciton trap site, decreasing the quantum yield or device performance if the trapping occurs at a faster rate than exciton diffusion, 53 , 54 charge transfer, and transport.…”

Section: Introductionmentioning

confidence: 99%

“…Because of their extensive π-systems, at high concentrations, PDIs regularly form H or J aggregates, as well as excimer-like states. ,− H-aggregates are characterized by face-on stacking, blue-shifted absorption, and quenched luminescence, whereas J aggregates form from edge-on stacking and have red-shifted luminescence. , The role of the excimer state in PDIs has been extensively studied. ,− The excimer-state emission generally comes from PDIs that exhibit H-aggregate formation facilitated by the addition of bulky groups attached to the imide positions of the PDI. ,, Understanding the formation of these low-energy excimer states in molecular aggregates is of great interest ,, as it could allow for increased functionality, stability, and device performance. The excimer state can act as an exciton trap site, decreasing the quantum yield or device performance if the trapping occurs at a faster rate than exciton diffusion, , charge transfer, and transport. , …”

Section: Introductionmentioning

confidence: 99%

Excimer Formation in Carboxylic Acid-Functionalized Perylene Diimides Attached to Silicon Dioxide Nanoparticles

et al. 2019

Self Cite

View full text Add to dashboard Cite

The creation of artificial light-harvesting complexes involves the ordered arrangement of chromophores in space. To guarantee efficient energy-transfer processes, organic dyes must be brought into close proximity, often leading to aggregation and the formation of excimer states. In recent years, the attachment of ligand-based chromophores to nanoparticles has also generated interest in relation to improved solar harvesting and spin-dependent electronic interactions such as singlet fission and upconversion. We explore the covalent attachment of two novel perylene-diimide (PDI) carboxylic acid ligands to silicon dioxide nanoparticles. This allows us to study electronic interactions between the ligands when attached to nanoparticles because these cannot couple to the wide band gap silicon dioxide. One of the synthesized PDI ligands has sterically hindering phenols in the bay position and undergoes minimal optical changes upon attachment, but the other forms an excimer state with a red-shifted and long-lived florescence. As such, molecular structure changes offer a method to tune weak and strong interactions between ligand layers on nanocrystal surfaces.

show abstract

“…6 In recent decades, lumophores with high PLQYs and excellent stabilities, such as quantum dots, 7,8 metal complexes 9,10 and organic dyes, 11,12 have been developed. In particular, πconjugated polymers have been extensively investigated as lumophores for flexible, light-weight optical devices such as field-effect transistors, 13,14 organic light-emitting diodes, 15,16,17 and PV devices, 18,19 as well as LSCs, 20,21 due to their desirable optoelectronic properties and costeffective solution processability. 22 However, the optical efficiency of conjugated polymers is often undermined by aggregation-caused quenching (ACQ), which occurs due to preferential nonradiative relaxation of excited states as a result of intermolecular π-π interactions.…”

Section: Introductionmentioning

confidence: 99%

Luminescent Solar Concentrators Based on Energy Transfer from an Aggregation-Induced Emitter Conjugated Polymer

Lyu,

Kendall,

Meazzini

et al. 2019

Preprint

View full text Add to dashboard Cite

Luminescent solar concentrators (LSCs) are solar-harvesting devices fabricated from transparent waveguide that is doped or coated with lumophores. Despite their potential for architectural integration, the optical efficiency of LSCs is often limited by incomplete harvesting of solar radiation and aggregation-caused quenching (ACQ) of lumophores in the solid state. Here, we demonstrate a multi-lumophore LSC design which circumvents these challenges through a combination of non-radiative Förster energy transfer (FRET) and aggregation-induced emission (AIE). The LSC incorporates a green-emitting poly(tetraphenylethylene), p-O-TPE, as an energy donor and a red-emitting perylene bisimide molecular dye (PDI-Sil) as the energy acceptor, within an organic-inorganic hybrid di-ureasil waveguide. Steady-state photoluminescence studies demonstrate that the di-ureasil host induced AIE from the p-O-PTE donor polymer, leading to a high photoluminescence quantum yield (PLQY) of ~45% and a large Stokes shift of ~150 nm.Covalent grafting of the PDI-Sil acceptor to the siliceous domains of the di-ureasil waveguide also inhibits non-radiative losses by preventing molecular aggregation. Due to the excellent spectral overlap, FRET was shown to occur from p-O-TPE to PDI-Sil, which increased with acceptor concentration. As a result, the final LSC (4.5 cm ´ 4.5 cm ´ 0.3 cm) with an optimised donoracceptor ratio (1:1 by wt%) exhibited an internal photon efficiency of 20%, demonstrating a viable design for LSCs utilising an AIE-based FRET approach to improve the solar-harvesting performance.reduced loss of absorbed photons as a result of the FRET process. Enhancement in the external photon efficiency of the donor-acceptor LSC was also observed due to the extended solarharvesting window provided by the complementary absorption spectra of the dual lumophore system. The results also demonstrate the importance of lumophore-waveguide interactions in determining the final LSC efficiency. Here, the di-ureasil waveguide is used to promote aggregation and thus switch-on emission from the AIE-donor, while simultaneously covalent grafting of the acceptor reduces ACQ. This study therefore demonstrates that the bottom-up design of integrated lumophore-waveguide materials is a viable strategy to overcome the intrinsic optical losses of LSCs and to boost their solar-harvesting performance. ASSOCIATED CONTENTSupporting Information.

show abstract

Optimization of energy transfer in a polymer composite with perylene chromophores

Abstract: Luminescent solar concentrators based on molecular dyes are a promising approach to light collection.

Cited by 9 publications

References 46 publications

Energy Transfer between Perylene Diimide Based Ligands and Cesium Lead Bromide Perovskite Nanocrystals

Energy Transfer between Perylene Diimide Based Ligands and Cesium Lead Bromide Perovskite Nanocrystals

Excimer Formation in Carboxylic Acid-Functionalized Perylene Diimides Attached to Silicon Dioxide Nanoparticles

Luminescent Solar Concentrators Based on Energy Transfer from an Aggregation-Induced Emitter Conjugated Polymer

Contact Info

Product

Resources

About