Carbon Dots: A Review with Focus on Sustainability

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract Carbon dots (CDs) are an emerging class of nanomaterials with attractive optical properties, which promise to enable a variety applications. An important and timely question is whether CDs can become functional sustainable alternative incumbent nanomaterials, notably inorganic quantum dots. Herein, the current CD literature comprehensively reviewed as regards their synthesis function, focus on sustainability aspects. The study quantifies why it that be synthesized biomass sole starting material free from toxic precious metals critical raw materials. It further describes analyzes employed pretreatment, chemical‐conversion, purification, processing procedures, highlights issues usage solvents, energy efficiency, safety waste management. specially shown many reported methods concerningly wasteful utilization non‐sustainable solvents energy. finally recommended future studies should explicitly consider discuss environmental influence selected material, generated byproducts, quantitative information required amounts consumables, provided evaluation presented in upscaled context.

Language: Английский

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Porogenic Solvents in Molecularly Imprinted Polymer Synthesis: A Comprehensive Review of Current Practices and Emerging Trends

Polymers, Journal Year: 2025, Volume and Issue: 17(8), P. 1057 - 1057

Published: April 14, 2025

The versatility of molecularly imprinted polymers (MIPs) has led to their integration into applications like biosensing, separation, environmental monitoring, and drug delivery technologies. This diversity resulted in a plethora synthesis approaches precisely tailor the materials’ properties specific demands. A critical, yet often overlooked, factor MIP is choice porogen. Porogens play pivotal role defining morphology, surface properties, swelling behavior, binding efficiencies resulting MIPs. While aprotic solvents have traditionally been standard molecular imprinting, recent developments expanded variety employed porogens accompanied by notable improvements performance. Therefore, this review aims highlight both traditional emerging types used influence on polymer sorption performance, application across various sensing extraction applications.

Language: Английский

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[DABCO-C18]Br: A novel basic surfactant for the synthesis of dihydropyrano[3,2-c]chromenes and 2-aminobenzochromenes under ambient conditions

Journal of Molecular Liquids, Journal Year: 2023, Volume and Issue: 391, P. 123247 - 123247

Published: Oct. 5, 2023

Language: Английский

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Hydrogen Bond Promoted Methoxycarbonylation of Pentanediamine to Biobased Dicarbamate by Accelerating Proton Transfer

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(25), P. 9320 - 9330

Published: June 11, 2024

The methoxycarbonylation of amines into carbamates via the construction a C–N bond is an important reaction in pharmaceutical and fine chemical syntheses. However, with dimethyl carbonate (DMC) without metal-based catalysts or other base has rarely been studied, mechanisms remain underexplored. Herein, efficient biobased pentanediamine (PDA) DMC promoted by water proposed. addition as catalyst resulted 4-fold increase yield. conducted kinetic studies showed that proton transfer from PDA to methoxy occurs through hydrogen between zwitterionic intermediate water. In situ analyses have shown OH– form bonds ether O atom hydroxyl H atoms PDA, synergistically promoting elimination group. reduced energy barrier group 16.3 0.6 kcal/mol, confirming results theoretical computations. Furthermore, methyl (5-aminophenyl)carbamate was recycled pentane-1,5-diyldicarbamate use additional catalyst, which mediated (5-aminophenyl)carbamate. reported mild under metal-free conditions green sustainable method synthesizing dicarbamate.

Language: Английский

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Slurry in Deep Eutectic Solvents: A Green and Efficient Cocrystal Synthesis Approach via Solvate Formation

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(13), P. 5593 - 5602

Published: June 13, 2024

Cocrystallization has emerged as a promising strategy to obtain new solid forms of given compound with tailored properties. In this study, green and efficient slurry method was proposed for cocrystal synthesis using deep eutectic solvents (DESs), generation solvents, both the solvent reactant (i.e., coformer). The subjected screening carbamazepine in series choline chloride (ChCl) DESs compared organic solvents. results indicate that formation by is similar solvate it can overcome issues traditional cocrystallization such individual crystallization caused solubility differences unwanted solvates, thereby improving efficiency cocrystals. Further, DES ChCl urea used 30 compounds, all cocrystals were successfully synthesized after reaction temperature water contents adjusted, further confirming applicability various compounds. Finally, artificial bee colony algorithm, one intelligence, adopted search low-energy stable structures precursors ChCl-urea DESs. Such combined hydrogen bond analysis Atoms Molecules theory indicated strong interactions between drug could restrain its urea. conclusion, based on study obstacles which green, efficient, alternative synthesis.

Language: Английский

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Sustainable and Scalable Amidations in Water Using Continuous Slurry-Flow Technology

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Language: Английский

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Application of an Oscillatory Plug Flow Reactor to Enable Scalable and Fast Reactions in Water Using a Biomass‐Based Polymeric Additive**

ChemSusChem, Journal Year: 2023, Volume and Issue: 17(2)

Published: Sept. 22, 2023

The utilization of water as a sustainable reaction medium has important advantages over traditional organic solvents. Hydroxypropyl methylcellulose emerged biomass-based polymeric additive that enables reactions in through hydrophobic effects. However, such conditions imply slurries mixtures, where the efficacy mass transfer and mixing decreases with increasing vessel size. In order to circumvent this limitation establish an effectively scalable platform for performing hydroxypropyl methylcellulose-mediated aqueous transformations, we utilized oscillatory plug flow reactors feature smart dimensioning design principle across different scales. Using nucleophilic aromatic substitutions valuable model reactions, rapid parameter optimization was performed first small-scale instrument having internal channel volume 5 mL. optimal were then directly transferred 15 mL reactor, achieving three-fold scale-up without re-optimizing any parameters. By precisely fine-tuning oscillation parameters, system achieved homogeneous suspension solids, preventing settling particles clogging process channels. Ultimately, resulted robust multiphasic under conditions.

Language: Английский

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A new strategy for the preparation of nuciferine from lotus leaf via expanded bed adsorption extraction integrated with pH dependent liquid-liquid extraction and cooling crystallization

Sustainable Chemistry and Pharmacy, Journal Year: 2024, Volume and Issue: 37, P. 101444 - 101444

Published: Jan. 19, 2024

Language: Английский

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Green solvent γ-Valerolactone as a sustainable alternative for the production of polymeric membranes for pharmaceutically active compounds (PhACs) removal from water

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 114853 - 114853

Published: Nov. 1, 2024

Language: Английский

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Harnessing the potential of thin film composite membranes for efficient treatment of aqueous streams containing polar aprotic organic solvents

Chemical Papers, Journal Year: 2023, Volume and Issue: 78(2), P. 793 - 808

Published: Oct. 16, 2023

Language: Английский

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