Chlorination <i>vs.</i> fluorination: a study of halogenated benzo[<i>c</i>][1,2,5]thiadiazole-based organic semiconducting dots for near-infrared cellular imaging

Mo, Daize; Li, Lin; Chao, Pengjie; Lai, Hanjian; Zhang, Qingwen; Tian, Leilei; He, Feng

doi:10.1039/d0nj00700e

Cited by 11 publications

(6 citation statements)

References 38 publications

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“…The HOMO energy can be lowered down to −6.80 eV, which was observed for CDs with an oxygen rich surface [ 55 ]. A similar effect on the HOMO energy was observed for CDs via doping with halogen atoms [ 71 ]. For more details on CD synthetic procedures, interested readers are referred to the recent reviews [ 72 , 73 , 74 ], including syntheses of pH-sensitive [ 8 ] and metal-doped [ 75 ] CDs.…”

Section: Improvements Of Optical Properties Of Cdssupporting

confidence: 64%

Applications of Carbon Dots in Optoelectronics

et al. 2021

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Carbon dots (CDs) are an attractive class of nanomaterials due to the ease of their synthesis, biocompatibility, and superior optical properties. The electronic structure of CDs and hence their optical transitions can be controlled and tuned over a wide spectral range via the choice of precursors, adjustment of the synthetic conditions, and post-synthetic treatment. We summarize recent progress in the synthesis of CDs emitting in different colors in terms of morphology and optical properties of the resulting nanoparticles, with a focus on the synthetic approaches allowing to shift their emission to longer wavelengths. We further consider formation of CD-based composite materials, and review approaches used to prevent aggregation and self-quenching of their emission. We then provide examples of applications of CDs in optoelectronic devices, such as solar cells and light-emitting diodes (LEDs) with a focus on white LEDs.

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Section: Improvements Of Optical Properties Of Cdssupporting

confidence: 64%

Applications of Carbon Dots in Optoelectronics

et al. 2021

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“…Two new fluorescent BTD derivatives, BTD‐ClBT and BTD‐ClClBT (Figure 3), [88] were used as dyes in encapsulated nanodots and applied as bioimaging probes. Both systems were capable of efficiently transposing the plasmatic membrane of the cells and were found dispersed in the cytosol.…”

Section: Structures With Minimum Selection Tendencies and Nonspecific...mentioning

confidence: 99%

“…In principle, although these structures shown in Figure 3 [81][82][83][84][85][86][87][88] are not good candidates to be applied as bioimaging agents, the results obtained from the tests of these molecules may allow for the development of more selective BTDs which could, in turn, be applied as selective cell-imaging probes, as will be disclosed in the next sections of this article.…”

Section: Structures With Minimum Selection Tendencies and Nonspecific...mentioning

confidence: 99%

Fluorescent Benzothiadiazole Derivatives as Fluorescence Imaging Dyes: A Decade of New Generation Probes

Neto

Corrêa

Spencer

2021

Chemistry A European J

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The current review describes advances in the use of fluorescent 2,1,3‐benzothiadiazole (BTD) derivatives after nearly one decade since the first description of bioimaging experiments using this class of fluorogenic dyes. The review describes the use of BTD‐containing fluorophores applied as, inter alia, bioprobes for imaging cell nuclei, mitochondria, lipid droplets, sensors, markers for proteins and related events, biological processes and activities, lysosomes, plasma membranes, multicellular models, and animals. A number of physicochemical and photophysical properties commonly observed for BTD fluorogenic structures are also described.

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Section: Carbon Nanoparticles (Cnps)mentioning

confidence: 99%

“…[ 140 ] In ref. [ 90 ] , it was shown that HOMO level of CDs could be shifted down to –5.51 and –5.43 eV by using Cl − and F − containing precursors, respectively, due to their strong electron‐withdrawing ability lowering the frontier orbital energy levels.…”

Section: Carbon Nanoparticles (Cnps)mentioning

confidence: 99%

Carbon Nanoparticles as Versatile Auxiliary Components of Perovskite‐Based Optoelectronic Devices

Litvin

Zhang

Ushakova

et al. 2021

Adv Funct Materials

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Metal halide perovskite-based optoelectronics has experienced an unprecedented development in the last decade, while further improvements of efficiency, stability, and economic gains of such devices require novel engineering concepts. The use of carbon nanoparticles as versatile auxiliary components of perovskite-based optoelectronic devices is one strategy that offers several advantages in this respect. In this review, first, a brief introduction is offered on metal halide perovskites and on the major performance characteristics of related optoelectronic devices. Then, the versatility and merits of different kinds of carbon nanoparticles, such as graphene quantum dots and carbon dots, are discussed. The tunability of their electronic properties is focused upon, their interactions with perovskite components are analyzed, and different strategies of their implementation in optoelectronic devices are introduced, which include solar cells, light-emitting diodes, luminescent solar concentrators, and photodetectors. It is shown how carbon nanoparticles influence charge carriers extraction and transport, promote perovskite crystallization, allow for efficient passivation, block ion migration, suppress hysteresis, enhance their environmental stability, and thus improve the performance of perovskite-based optoelectronic devices.

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Chlorination vs. fluorination: a study of halogenated benzo[c][1,2,5]thiadiazole-based organic semiconducting dots for near-infrared cellular imaging

Abstract: The chlorinated dots based on chlorinated benzo[c][1,2,5]thiadiazole unit possess higher fluorescence quantum yields, larger Stokes shifts, and better photostability than the fluorinated dots.

Cited by 11 publications

References 38 publications

Applications of Carbon Dots in Optoelectronics

Applications of Carbon Dots in Optoelectronics

Fluorescent Benzothiadiazole Derivatives as Fluorescence Imaging Dyes: A Decade of New Generation Probes

Carbon Nanoparticles as Versatile Auxiliary Components of Perovskite‐Based Optoelectronic Devices

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