Superior End-Group Stacking Promotes Simultaneous Multiple Charge-Transfer Mechanisms in Organic Solar Cells with an All-Fused-Ring Nonfullerene Acceptor DOI
Lili Wang,

Jin‐Hong Han,

Hai-Ping Zhou

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(27), С. 35390 - 35399

Опубликована: Июнь 26, 2024

The all-fused-ring acceptor (AFRA) is a success for nonfullerene materials and has attracted considerable attention as its high optical chemical stability expected to reduce energy loss, power conversion efficiency (PCE) approaching 15% in constructed all-small-molecule organic solar cells (OSCs). Herein, the intrinsic role of structure AFRA F13 reason PCE were revealed by comparison with those typical fused acceptors IDT-IC Y6. An increased degree conjugation leads broader red-shifted absorption peaks, facilitating enhancement short-circuit current. Multiple charge-transfer mechanisms are mainly attributed higher Frenkel exciton (FE) state due multiple transition ways C1-CN:F13 system. number atoms contributing (CT) facilitated existence more superior stacking patterns easy formation CT FE/CT states charge separation rate. It was found using an effective strategy enhance end-group stacking, enhancing borrowing oscillator strength promote complexes, explaining performance this OSC device. This work promising guide designing efficient future.

Язык: Английский

Exploring the solubility and solvation thermodynamics of coumarin in a range of aqua-organic solvents DOI
Sintu Ganai, Puspal Mukherjee,

Kalachand Mahali

и другие.

New Journal of Chemistry, Год журнала: 2023, Номер 47(28), С. 13547 - 13557

Опубликована: Янв. 1, 2023

This study presents the solubility and solvation thermodynamics of coumarin in a range aqua-organic solvent mixtures at various temperatures. The order was determined as follows: DMF > DMSO ACN H 2 O.

Язык: Английский

Процитировано

13
An Asymmetric Coumarin‐Anthracene Conjugate as Efficient Fullerene‐Free Acceptor for Organic Solar Cells DOI
Nirmala Niharika Bhuyan, Shyam Shankar S, Subhra Jyoti Panda

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Май 13, 2024

Asymmetric wide-band gap fullerene-free acceptors (FFAs) play a crucial role in organic solar cells (OSCs). Here, we designed and synthesized simple asymmetric coumarin-anthracene conjugate named CA-CN with optical band of 2.1 eV single-step condensation reaction. Single crystal X-ray structure analysis confirms various multiple intermolecular non-covalent interactions. The molecular orbital energy levels estimated from cyclic voltammetry were found to be suitable for its use as an acceptor OSCs. Binary OSCs fabricated using PTB7-Th the donor achieve power conversion efficiency (PCE) 11.13 %. We further demonstrate that insertion 20 wt % third component ternary : DICTF host material achieved impressive PCE 14.91 %, improvement ~43 compared binary device (10.38 %). Importantly, blend enhances absorption coverage 400 800 nm improves morphology active layer. findings highlight efficacy design approach FFAs, which paves way developing high-efficiency at low cost.

Язык: Английский

Процитировано

3
Conjugated Backbone Optimization of All-Fused-Ring Acceptor for Efficient and Stable Organic Solar Cells DOI

Jun Feng,

Yue Liu,

Hang Yang

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(48), С. 6206 - 6209

Опубликована: Янв. 1, 2024

Three all-fused-ring acceptors with different conjugated backbones are designed as for organic solar cells. The extensions of the significantly impact photovoltaic performance and stability devices.

Язык: Английский

Процитировано

3
Diketopyrrolopyrrole-Coumarin Conjugates for Efficient Binary Organic Solar Cells DOI
Kerba S. More,

Harshad A. Mirgane,

Shyam Shankar S

и другие.

ACS Applied Energy Materials, Год журнала: 2023, Номер 6(17), С. 8857 - 8866

Опубликована: Авг. 18, 2023

Two coumarin (Cou)-functionalized DPP derivatives, DPP-Cou and Cou-DPP-Cou, have been designed, synthesized, characterized. The extension of the molecular backbone by an additional derivative in symmetrical Cou-DPP-Cou extends absorption to ∼750 nm (Egopt = 1.67 eV) compared ∼700 1.78 for asymmetric DPP-Cou. Thermogravimetric analysis showed higher thermal stability conjugates one. Both materials complementary spectra well-matched Frontier orbital energy levels with low band gap fullerene-free acceptor Y7 used as a donor organic solar cells. After optimization using solvent vapor annealing treatment, cells based on DPP-Cou:Y7 Cou-DPP-Cou:Y7 attained overall power conversion efficiencies (PCE) 9.63 13.48%, respectively. improved PCE is mainly due appropriate morphology faster charge extraction lower recombination.

Язык: Английский

Процитировано

6
Coumarin based fluorescent liquid crystal dimers: Synthesis, mesogenic, photophysical behavior, and DFT studies DOI

Banti Baishya,

Sadhana Barman, Mrinmoy Roy

и другие.

Journal of Molecular Liquids, Год журнала: 2024, Номер 417, С. 126691 - 126691

Опубликована: Дек. 7, 2024

Язык: Английский

Процитировано

1
Expedient synthesis of 1,2,4-triazinyl substituted benzo[c]coumarins via double oxidation strategy DOI Creative Commons
Ramil F. Fatykhov, Igor А. Khalymbadzha, Ainur D. Sharapov

и другие.

Chimica Techno Acta, Год журнала: 2023, Номер 10(2)

Опубликована: Апрель 11, 2023

Herein, we report a convenient one-pot synthesis of 1,2,4-triazinyl derivatives benzocoumarins. The proposed approach consists in the nucleophilic addition tetrahydrobenzo annulated dimethoxycoumarin to 1,2,4-triazines followed by double oxidation both dihydrotriazine and groups with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). was carried out presence three-fold excess methanesulfonic acid DCM at room temperature take place between positions 4 5 coumarin 1,2,4-triazine, respectively. step achieved 3.6 equivalent DDQ. Selective moiety, without affecting fragment, using 1.2 tetrachlorobenzoquinone (TCQ). differences TCQ DDQ appear be related higher oxidative potential contrast TCQ. advantages method are elimination use transition metals, availability starting materials, simplicity procedure. provides two-step protocol for triazinyl benzocoumarins, precursors preparation push-pull pyridinyl chromophore.

Язык: Английский

Процитировано

3
Photocatalytic Synthesis of Coumarin Derivatives Using Visible-Light-Responsive Strawberry Dye-Sensitized Titanium Dioxide Nanoparticles DOI Creative Commons
Mshari A. Alotaibi, Abdulrahman I. Alharthi,

Talal F. Qahtan

и другие.

Nanomaterials, Год журнала: 2023, Номер 13(23), С. 3001 - 3001

Опубликована: Ноя. 22, 2023

This study presents a novel method for the photocatalytic synthesis of 4-aryl-6-(3-coumarinyl) pyrimidin-2 (1H)-ones (a coumarin derivative) using strawberry dye-sensitized TiO2 (SD-TiO2) under visible light. The was achieved through three-component, one-pot condensation reaction involving 3-acetyl coumarin, aldehydes, and urea, utilizing SD-TiO2 as reusable innovative photocatalyst at room temperature. resulting thoroughly characterized FT-IR, XPS, XRD, SEM, BET. efficacy evaluated by comparing it to pristine in terms activity, optimal conditions process were determined. Notably, exhibited maximum yield compound, reaching up 96% just 30 min with catalyst concentration 1 mg/mL. surpasses traditional thermal procedures employing reflux conditions, where mg/mL is sufficient complete reaction. further 1H-NMR 13C-NMR. Moreover, stability confirmed recyclability experiments spectroscopic characterization, demonstrating its practicality three consecutive cycles.

Язык: Английский

Процитировано

2
Probing coumarin solubility and solvation energetics in diverse aqueous–organic solutions across a temperature range: A debut exploration DOI
Sintu Ganai, Puspal Mukherjee,

Kalachand Mahali

и другие.

Journal of Molecular Liquids, Год журнала: 2023, Номер 395, С. 123832 - 123832

Опубликована: Дек. 24, 2023

Язык: Английский

Процитировано

2
An Asymmetric Coumarin‐Anthracene Conjugate as Efficient Fullerene‐Free Acceptor for Organic Solar Cells DOI
Nirmala Niharika Bhuyan, Shyam Shankar S, Subhra Jyoti Panda

и другие.

Angewandte Chemie, Год журнала: 2024, Номер 136(40)

Опубликована: Май 13, 2024

Abstract Asymmetric wide‐band gap fullerene‐free acceptors (FFAs) play a crucial role in organic solar cells (OSCs). Here, we designed and synthesized simple asymmetric coumarin‐anthracene conjugate named CA‐CN with optical band of 2.1 eV single‐step condensation reaction. Single crystal X‐ray structure analysis confirms various multiple intermolecular non‐covalent interactions. The molecular orbital energy levels estimated from cyclic voltammetry were found to be suitable for its use as an acceptor OSCs. Binary OSCs fabricated using PTB7‐Th the donor achieve power conversion efficiency (PCE) 11.13 %. We further demonstrate that insertion 20 wt % third component ternary : DICTF host material achieved impressive PCE 14.91 %, improvement ~43 compared binary device (10.38 %). Importantly, blend enhances absorption coverage 400 800 nm improves morphology active layer. findings highlight efficacy design approach FFAs, which paves way developing high‐efficiency at low cost.

Язык: Английский

Процитировано

0
Superior End-Group Stacking Promotes Simultaneous Multiple Charge-Transfer Mechanisms in Organic Solar Cells with an All-Fused-Ring Nonfullerene Acceptor DOI
Lili Wang,

Jin‐Hong Han,

Hai-Ping Zhou

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(27), С. 35390 - 35399

Опубликована: Июнь 26, 2024

The all-fused-ring acceptor (AFRA) is a success for nonfullerene materials and has attracted considerable attention as its high optical chemical stability expected to reduce energy loss, power conversion efficiency (PCE) approaching 15% in constructed all-small-molecule organic solar cells (OSCs). Herein, the intrinsic role of structure AFRA F13 reason PCE were revealed by comparison with those typical fused acceptors IDT-IC Y6. An increased degree conjugation leads broader red-shifted absorption peaks, facilitating enhancement short-circuit current. Multiple charge-transfer mechanisms are mainly attributed higher Frenkel exciton (FE) state due multiple transition ways C1-CN:F13 system. number atoms contributing (CT) facilitated existence more superior stacking patterns easy formation CT FE/CT states charge separation rate. It was found using an effective strategy enhance end-group stacking, enhancing borrowing oscillator strength promote complexes, explaining performance this OSC device. This work promising guide designing efficient future.

Язык: Английский

Процитировано

0