Donor–Acceptor Dyes for Organic Photovoltaics

Arjona-Esteban, Alhama; Lenze, Martin R.; Meerholz, Klaus; Würthner, Frank

doi:10.1007/978-3-319-28338-8_8

Cited by 28 publications

(40 citation statements)

References 79 publications

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“…The PC (1.669(4) Å) and PS (1.917(1) Å) bonds are in the typical range of strong double bonds. The angle of the P=C unit towards the Mes* and S are 111.0(2) and 124.2 (1) ; the former being much wider compared to the parent compound as well as the metallated derivatives 12 and [AuCl*A]. The thiaphosphorane unit is coplanar with the CPDT core efficiently extending the π-conjugated framework.…”

Section: Resultsmentioning

confidence: 98%

“…3(3), P1-Au1-Cl1 178.16 (8). 8: P1-O1 1.489 (3), P2-O2 1.578 (3), P2-Au1 2.232(1), Au1-Cl1 2.298 (1). O1 •••H-O2 164, O1•••O2 2.550(4).…”

Section: Resultsunclassified

“…ORTEP plot (50% probability ellipsoids) of the solid-state structure of palladium complex 12 and thiaphosphorane (13). 12: Light blue: least squares plane of the square planar Pd-coordination environment including (Pd1,P1, Cl1 1, C1-P1-C10 111.0(2), C1-P1-S3 124.2 (1).…”

Section: Resultsmentioning

confidence: 99%

“…Combining electron donor and electron acceptor units to tailor the HOMO and LUMO of dye molecules has been an extensively used concept in the design of dyes for sensors, solar cells, etc. 1 In the cyclopentadithiophene (CPDT) motif two thiophene units are linked using a methylene bridge improving the orbital delocalization by removing a torsional degree of freedom, i.e. planarizing the conjugated system.…”

Section: Introductionmentioning

confidence: 99%

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Core and Double Bond Functionalization of Cyclopentadithiophene- Phosphaalkenes

Wells¹,

Shameem²,

Gupta³

et al. 2020

Preprint

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The heterofulvenoid cyclopentadithiophene-phosphaalkene is a versatilie building block for opto-electronic tuning with donor and acceptor moieties. Both the annulated thienyl rings and the phosphaalkene bond can be functionalised using a variety of chemical transfomations, e.g. forming C-C, C-E (E = Si, Br) bonds or oxidation and metal coordination, respectively. Solid-state structures, optical and electronic properties are probed theoretically and experimentally, illustrating the opto-electronic tailoring opportunities at this motif.

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Section: Resultsmentioning

confidence: 98%

“…3(3), P1-Au1-Cl1 178.16 (8). 8: P1-O1 1.489 (3), P2-O2 1.578 (3), P2-Au1 2.232(1), Au1-Cl1 2.298 (1). O1 •••H-O2 164, O1•••O2 2.550(4).…”

Section: Resultsunclassified

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Core and Double Bond Functionalization of Cyclopentadithiophene- Phosphaalkenes

Wells¹,

Shameem²,

Gupta³

et al. 2020

Preprint

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“…BHJ devices utilize an electron donating material, typically an electronically delocalized oligomer [43][44][45][46][47][48][49][50][51][52] or conjugated polymer [48,50,[53][54][55][56][57][58][59][60][61] blended with an electron accepting small molecule. While there are a large number of studied donor materials the electron acceptor is often a fullerene such as C 60 , C 70 , PC 61 BM or PC 71 BM (figure 1) [50,62,63] although in recent years studies using non-fullerene acceptors such as perylene diimide derivatives or other organic molecules capable of forming stable anions have increased in profile.…”

Section: Introductionmentioning

confidence: 99%

Phosphorescent molecular metal complexes in heterojunction solar cells

Wright

2018

Polyhedron

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Bulk heterojunction (BHJ) solar cells have been developed intensively over the last two decades due to the cheap, flexible devices which may be obtained although their efficiency is below that of other emerging solar cell technologies such as dye-sensitized and perovskite solar cells. Molecular organometallic phosphors are noted for their triplet harvesting ability which has produced highly efficient organic light-emitting devices however triplet harvesting presents an equally appealing route to improve the efficiency of BHJ devices. The results of studies using molecular phosphors as dopants in very small loadings can yield large increases in short circuit currents and power conversion efficiency and demonstrate that improvements in solar cell performance may be obtained by this approach.

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Twisted‐Planar Molecular Engineering with Sonication‐Induced J‐Aggregation To Design Near‐Infrared J‐Aggregates for Enhanced Phototherapy

Liu,

Song,

Zhu

et al. 2024

Angewandte Chemie

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J‐aggregates show great promise in phototherapy, but are limited to specific molecular skeletons and poor molecular self‐assembly controllability. Herein, we report a twisted‐planar molecular strategy with sonication‐induced J‐aggregation to develop donor‐acceptor (D‐A) type J‐aggregates for phototherapy. With propeller aggregation‐induced emission (AIE) moieties as the twisted subunits and thiophene as the planar π‐bridge, the optimal twisted‐planar π‐interaction in MTSIC induces appropriate slip angle and J‐aggregates formation, red‐shifting the absorption from 624 to 790 nm. In contrast, shorter π‐planarity results in amorphous aggregates, and elongation promotes charge transfer (CT) coupled J‐aggregates. Sonication was demonstrated to be effective in controlling self‐assembly behaviors of MTSIC, which enables the transformation from amorphous aggregates to H‐intermediates, and finally to stable J‐aggregates. After encapsulation with lipid‐PEG, the resultant J‐dots show enhanced phototherapeutic effects over amorphous dots, including brightness, reactive oxygen species (ROS) generation, and photothermal conversion, delivering superior cancer phototherapy performance. This work not only advances D‐A type J‐aggregates design but also provides a promising strategy for supramolecular assembly development.

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Donor–Acceptor Dyes for Organic Photovoltaics

Cited by 28 publications

References 79 publications

Core and Double Bond Functionalization of Cyclopentadithiophene- Phosphaalkenes

Core and Double Bond Functionalization of Cyclopentadithiophene- Phosphaalkenes

Phosphorescent molecular metal complexes in heterojunction solar cells

Twisted‐Planar Molecular Engineering with Sonication‐Induced J‐Aggregation To Design Near‐Infrared J‐Aggregates for Enhanced Phototherapy

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