Rhodanine-based light-harvesting sensitizers: a rational comparison between 2-(1,1-dicyanomethylene)rhodanine and rhodanine-3-acetic acid

Echeverry-Gonzalez, Carlos A.; Ortíz, Alejandro; Insuasty, Braulio

doi:10.1039/c9nj00939f

Cited by 10 publications

(4 citation statements)

References 39 publications

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“…Likewise, another important feature of CDs corresponds to the dependence of the fluorescence emission on the excitation wavelength ( exc ), which is known as wavelength-dependent behaviour or giant red-edge effect [46]. This behaviour in organic dyes and inorganic complexes results from a variety of solute-solvent interactions in the ground and excited states under the conditions of restricted mobility [47,48]. This phenomenon does not fit with Vavilov's law and Kasha's rule, which state that the emission energy is independent of the excitation energy within the absorption band and that fluorescence normally occurs from the lowest vibrational level of the first excited electronic state, respectively [49].…”

Section: Fluorescence Emission In Cdsmentioning

confidence: 99%

Carbon Dots: An Insight into Their Application in Heavy Metal Sensing

Echeverry-Gonzalez¹,

Kouznetsov²

2020

RPM

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The design of nanomaterials for application in diverse fields ranging from photovoltaic to fluorescence sensing is a research area of increasing interest. Recently, Quantum Dots (QDs), which are classified as semiconductor quantum dots (SQDs) and Carbon dots (CDs), have become a hot topic of investigation, owing to their extraordinary tunable fluorescence emission properties that render them excellent candidates for sensing metal ions. The detection of metal ions in aqueous solutions with high sensitivity is very important as these ions have toxicological and environmental impacts. In this short review, we have described the fluorescence emission properties of CDs and their application for the detection of different metal ions, such as Hg2+, Pb2+, Cu2+, Fe3+, Cd2+, and Cr6+.

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Section: Fluorescence Emission In Cdsmentioning

confidence: 99%

Carbon Dots: An Insight into Their Application in Heavy Metal Sensing

Echeverry-Gonzalez¹,

Kouznetsov²

2020

RPM

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“…Thiazolidinedione is an intriguing acceptor unit, and a handful of HTMs incorporating its alkylated form, N -alkylrhodanine, have been studied. , However, the use of non-alkylated thiazolidinedione is currently unknown in HTMs. The thiazolidinedione derivatives have already been proven to be an anchoring group for sensitizers through their amide sections in dye-sensitized solar cells. , Therefore, we speculate that the free NH-moiety of DCMR has the tendency to passivate the defects through its capability of chelating the iodide ions from the perovskite . Also, the possible hydrogen bond formation between the adjacent WWC103 molecules could improve the inter-molecular hole transfer mobility .…”

Section: Introductionmentioning

confidence: 99%

“…The thiazolidinedione derivatives have already been proven to be an anchoring group for sensitizers through their amide sections in dye-sensitized solar cells. 50,51 Therefore, we speculate that the free NH-moiety of DCMR has the tendency to passivate the defects through its capability of chelating the iodide ions from the perovskite. 52 Also, the possible hydrogen bond formation between the adjacent WWC103 molecules could improve the intermolecular hole transfer mobility.…”

Section: ■ Introductionmentioning

confidence: 99%

Heterocyclic Functionalized Donor–Acceptor Hole-Transporting Materials for Inverted Perovskite Solar Cells

Tingare

Wang

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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Hole transport materials (HTMs) with appropriate energy levels and comprehensive passivation effects help to obtain highly efficient and stable perovskite solar cells (PSCs). Electrondeficient character-induced HTMs can generate varying energy level alignments near the HTM/perovskite interface. Herein, we report the synthesis and investigation of two new dipolar HTMs, WWC103 and WWC105, based on 2-(1,1-dicyanomethylene)rhodamine and 4cynophenylacetonitrile acceptors, enabling high-efficiency mixed-cation mixed-halide perovskite solar cells. Apart from having different acceptors, these HTMs are built on a heterocyclic frame, which can provide passivation effects and improve the morphology of the perovskite layer. As a result, these dopant-free HTM-based solar cells show a high open-circuit voltage and good power conversion efficiency. Among both, the solar cell based on the HTM with 2-(1,1-dicyanomethylene)rhodamine exhibits a high open-circuit voltage of 1.09 V with a champion power conversion efficiency of over 20.51%. The improved performance of WWC103 over WWC105 (19.74%) is attributed to the new acceptor, which, in addition to providing good energy-level alignments and hole mobility, also holds the ability to passivate the defects. The findings suggest a new acceptor unit for constructing dopant-free HTMs for efficient PSCs.

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“…As a result, it enables light-mediated control of transgenic cardiac cells 27 and of endogenous TRPA1-expressing neurons. The photoactive properties of optovin have been linked to its rhodanine ring, a chemical moiety known to absorb light 28 . Several structural analogues of optovin have been identified that also produce similar phenotypes 27 .…”

Section: Introductionmentioning

confidence: 99%

Identification of compounds producing non-visual photosensation via TRPA1 in zebrafish

Cheng

McCarroll

Taylor

et al. 2020

Preprint

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TRPA1 receptors sense chemical irritants, but they do not normally respond to light. Previous studies have identified compounds that confer photosensitivity onto vertebrate TRPA1. However, the pharmacology of TRPA1-mediated non-visual photosensation remains poorly understood. To identify novel compounds that affect this process, we screened a large chemical library for compounds that increased light-elicited motor activity in larval zebrafish. We found structurally diverse hit compounds that were photoreactive and produced specific behavioral phenotypes. A subset of these compounds required functional TRPA1 to produce behavioral phenotypes in vivo. These findings provide novel prototype compounds for controlling TRPA1 with light and improve our understanding of non-visual TRPA1-mediated photosensation.

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Rhodanine-based light-harvesting sensitizers: a rational comparison between 2-(1,1-dicyanomethylene)rhodanine and rhodanine-3-acetic acid

Abstract: Photophysical, electrochemical and theoretical characterization of new rhodanine-based dyes for DSSC applications, a comparison of the photovoltaic performances of 2-(1,1-dicyanomethylene)rhodanine (DR) and rhodanine-3-acetic acid (RAA).

Cited by 10 publications

References 39 publications

Carbon Dots: An Insight into Their Application in Heavy Metal Sensing

Carbon Dots: An Insight into Their Application in Heavy Metal Sensing

Heterocyclic Functionalized Donor–Acceptor Hole-Transporting Materials for Inverted Perovskite Solar Cells

Identification of compounds producing non-visual photosensation via TRPA1 in zebrafish

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