Co-sensitization of N719 with polyphenylenes from the Bergman cyclization of maleimide-based enediynes for dye-sensitized solar cells

Dong, Luhua; Zheng, Zhiwei; Wang, Youfu; Li, Xing; Hua, Jing; Hu, Aiguo

doi:10.1039/c5ta01861g

Cited by 19 publications

(12 citation statements)

References 51 publications

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“…C{ 1 H} NMR (100 MHz, acetone-d): δ = 205.15, 148.32, 147.11, 132.80, 129.58, 125.11, 123.90, 121.65, 115.81, 105.56, 92.41, 0.66. Spectroscopic data is consistent with the literature 81.…”

supporting

confidence: 90%

Mixed Metal-Organic Dyes With Dual Electrophores: Designing More Robust Dyes for Light-Harvesting Applications

Huynh¹

2021

Preprint

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Donor-π-spacer-acceptor architectures are a favourable motif in the design of dyes for light harvesting applications. Organic compounds offer cost-effectiveness and synthetic design versatility, while inorganic compounds possess long term redox stability and wide range for absorption. Uniting both types of molecules allows utilization of these properties. Several projects were undertaken with the theme of a hybrid dye system and study of their redox stability. Chapter 1 gives a brief overview of the inorganic and organic compounds that paved the research in DSSC dyes. Chapter 2 details a review on copper(I) dyes in the literature and preliminary synthesis towards a D-π-A templated copper(I) dye. Chapter 3 looks into the robust potential of novel BODIPY dyes that utilize ferrocene as an electron rich donor. Chapter 4 represents a series of BODIPY-redox active donor dyads, the study of their redox stability provide insight on the decomposition pathway of these conjugates.

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confidence: 90%

Mixed Metal-Organic Dyes With Dual Electrophores: Designing More Robust Dyes for Light-Harvesting Applications

Huynh¹

2021

Preprint

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“…However, the DSSC co-sensitized with 7-BC and N719 showed a much higher PCE of 9.68% compared to the PCE (8.34%) of the N719-based device due to the increase in light harvesting, and the retardation of electron recombination and dye aggregation. 40 The remarkably improved efficiency shows that co-sensitization is an effective approach for the enhancement of the photovoltaic performance of DSSCs.…”

Section: Introductionmentioning

confidence: 99%

Stepwise co-sensitization of two metal-based sensitizers: probing their competitive adsorption for improving the photovoltaic performance of dye-sensitized solar cells

Zhao

Zhang

et al. 2017

RSC Adv.

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“…The mixture was stirred at 40 °C under N 2 atmosphere for 5 h until TLC monitoring indicated the disappearance of compound 1 . The solvent was removed in vacuo, and the crude reaction mixture was purified by silica gel column chromatography using PE/CH 2 Cl 2 (2/1, v / v ) as eluent to give 2 [ 58 ] in 83% yield (391.0 mg). 1 H-NMR (400 MHz, CDCl 3 ) δ 7.34 (d, J = 8.7 Hz, 2H), 7.31-7.27 (m, 4H), 7.12–7.06 (m, 6H), 6.98 (d, J = 8.7 Hz, 2H), 0.27 (s, 9H).…”

Section: Methodsmentioning

confidence: 99%

“…The organic layer was dried by Na 2 SO 4 and the solvent was then removed. The crude product was purified by silica gel column chromatography using PE/CH 2 Cl 2 (2/1, v / v ) as eluent to give 3 [ 58 ] in 90% yield (85.8 mg). 1 H-NMR (400 MHz, CDCl 3 ) δ 7.33 (d, J = 8.7 Hz, 2H), 7.29–7.25 (m, 4H), 7.11–7.04 (m, 6H), 6.97 (d, J = 8.6 Hz, 2H), 3.02 (s, 1H).…”

Section: Methodsmentioning

confidence: 99%

Broadband Visible Light-Absorbing [70]Fullerene-BODIPY-Triphenylamine Triad: Synthesis and Application as Heavy Atom-Free Organic Triplet Photosensitizer for Photooxidation

et al. 2021

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A broadband visible light-absorbing [70]fullerene-BODIPY-triphenylamine triad (C70-B-T) has been synthesized and applied as a heavy atom-free organic triplet photosensitizer for photooxidation. By attaching two triphenylmethyl amine units (TPAs) to the π-core of BODIPY via ethynyl linkers, the absorption range of the antenna is extended to 700 nm with a peak at 600 nm. Thus, the absorption spectrum of C70-B-T almost covers the entire UV–visible region (270–700 nm). The photophysical processes are investigated by means of steady-state and transient spectroscopies. Upon photoexcitation at 339 nm, an efficient energy transfer (ET) from TPA to BODIPY occurs both in C70-B-T and B-T, resulting in the appearance of the BODIPY emission at 664 nm. Direct or indirect (via ET) excitation of the BODIPY-part of C70-B-T is followed by photoinduced ET from the antenna to C70, thus the singlet excited state of C70 (1C70*) is populated. Subsequently, the triplet excited state of C70 (3C70*) is produced via the intrinsic intersystem crossing of C70. The photooxidation ability of C70-B-T was studied using 1,5-dihydroxy naphthalene (DHN) as a chemical sensor. The photooxidation efficiency of C70-B-T is higher than that of the individual components of C70-1 and B-T, and even higher than that of methylene blue (MB). The photooxidation rate constant of C70-B-T is 1.47 and 1.51 times as that of C70-1 and MB, respectively. The results indicate that the C70-antenna systems can be used as another structure motif for a heavy atom-free organic triplet photosensitizer.

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Co-sensitization of N719 with polyphenylenes from the Bergman cyclization of maleimide-based enediynes for dye-sensitized solar cells

Abstract: N719 co-sensitized with a conjugated polyphenylene (7-BC) shows a high efficiency of 9.68% (VOC of 750 mV, JSC of 18.18 mA cm−2 and FF of 0.71) in dye-sensitized solar cells, exhibiting an improvement of 16% compared to devices sensitized with N719 (PCE of 8.34%) alone.

Cited by 19 publications

References 51 publications

Mixed Metal-Organic Dyes With Dual Electrophores: Designing More Robust Dyes for Light-Harvesting Applications

Mixed Metal-Organic Dyes With Dual Electrophores: Designing More Robust Dyes for Light-Harvesting Applications

Stepwise co-sensitization of two metal-based sensitizers: probing their competitive adsorption for improving the photovoltaic performance of dye-sensitized solar cells

Broadband Visible Light-Absorbing [70]Fullerene-BODIPY-Triphenylamine Triad: Synthesis and Application as Heavy Atom-Free Organic Triplet Photosensitizer for Photooxidation

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