Heterocycle Synthesis Based on Visible‐Light‐Induced Photocatalytic CH Functionalization

Ding, Wei; Guo, Wei; Zeng, Tingting; Lu, Liang‐Qiu; Xiao, Wen‐Jing

doi:10.1002/9783527691920.ch13

Cited by 5 publications

(7 citation statements)

References 105 publications

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“…In recent years, visible-light-promoted single-electron transfer (SET) by photocatalysts has been recognized as a key step in organic synthesis . In this context, photocatalyzed C–H arylation reactions using aryl diazonium salts have received much attention and have made great progress .…”

Section: Introductionmentioning

confidence: 99%

Visible-Light-Promoted C–H Arylation by Merging Palladium Catalysis with Organic Photoredox Catalysis

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Visible-Light-Promoted C–H Arylation by Merging Palladium Catalysis with Organic Photoredox Catalysis

et al. 2017

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“…Besides the use of granular materials, there are also support bath concepts that are based on intermolecular guest–host interaction, or Laponite nanoclay . In this case the subunits of the support bath are in the molecular scale.…”

Section: Recent Progress For Controlling Shapementioning

confidence: 99%

“…In the case of Laponite, the structural components are disk‐shaped particles, which release sodium and hydroxide ions in aqueous solutions. This results in areas of positive and negative charge, enabling electrostatic interactions and their arrangement into a colloidal suspension with a yield stress and rapid recovery after exposure to shear stress . Depending on the travel speed of the nozzle and Laponite concentration, filaments from gelatin‐alginate with a diameter of ≈600 µm could be produced.…”

Section: Recent Progress For Controlling Shapementioning

confidence: 99%

“…Besides the use of granular materials, there are also support bath concepts that are based on intermolecular guest-host interaction, [169] or Laponite nanoclay. [178][179][180] In this case the subunits of the support bath are in the molecular scale. For support baths based on guest-host interactions, HA was modified with either adamantane or β-cyclodextrin and then mixed.…”

Section: Macromolecule-and Nanosilicate-based Systemsmentioning

confidence: 99%

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From Shape to Function: The Next Step in Bioprinting

et al. 2020

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In 2013, the “biofabrication window” was introduced to reflect the processing challenge for the fields of biofabrication and bioprinting. At that time, the lack of printable materials that could serve as cell‐laden bioinks, as well as the limitations of printing and assembly methods, presented a major constraint. However, recent developments have now resulted in the availability of a plethora of bioinks, new printing approaches, and the technological advancement of established techniques. Nevertheless, it remains largely unknown which materials and technical parameters are essential for the fabrication of intrinsically hierarchical cell–material constructs that truly mimic biologically functional tissue. In order to achieve this, it is urged that the field now shift its focus from materials and technologies toward the biological development of the resulting constructs. Therefore, herein, the recent material and technological advances since the introduction of the biofabrication window are briefly summarized, i.e., approaches how to generate shape, to then focus the discussion on how to acquire the biological function within this context. In particular, a vision of how biological function can evolve from the possibility to determine shape is outlined.

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“…As the process deals with lower viscositybased inks and properly retains the layer-by-layer structure, the chances of cell aggregate formation are very less that essentially contribute to achieving high cell viability. [54,55]…”

Section: Various Mechanisms Of Ebb Technique Based On Dispensing Mechmentioning

confidence: 99%

Effects of Processing Parameters of 3D Bioprinting on the Cellular Activity of Bioinks

Adhikari

Roy

Das

et al. 2020

Macromolecular Bioscience

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In this review, few established cell printing techniques along with their parameters that affect the cell viability during bioprinting are considered. 3D bioprinting is developed on the principle of additive manufacturing using biomaterial inks and bioinks. Different bioprinting methods impose few challenges on cell printing such as shear stress, mechanical impact, heat, laser radiation, etc., which eventually lead to cell death. These factors also cause alteration of cells phenotype, recoverable or irrecoverable damages to the cells. Such challenges are not addressed in detail in the literature and scientific reports. Hence, this review presents a detailed discussion of several cellular bioprinting methods and their process‐related impacts on cell viability, followed by probable mitigation techniques. Most of the printable bioinks encompass cells within hydrogel as scaffold material to avoid the direct exposure of the harsh printing environment on cells. However, the advantages of printing with scaffold‐free cellular aggregates over cell‐laden hydrogels have emerged very recently. Henceforth, optimal and favorable crosslinking mechanisms providing structural rigidity to the cell‐laden printed constructs with ideal cell differentiation and proliferation, are discussed for improved understanding of cell printing methods for the future of organ printing and transplantation.

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Heterocycle Synthesis Based on Visible‐Light‐Induced Photocatalytic CH Functionalization

Cited by 5 publications

References 105 publications

Visible-Light-Promoted C–H Arylation by Merging Palladium Catalysis with Organic Photoredox Catalysis

Visible-Light-Promoted C–H Arylation by Merging Palladium Catalysis with Organic Photoredox Catalysis

From Shape to Function: The Next Step in Bioprinting

Effects of Processing Parameters of 3D Bioprinting on the Cellular Activity of Bioinks

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