Outright Green Synthesis of Fluorescent Carbon Dots from Eutrophic Algal Blooms for In Vitro Imaging

Abstract

Carbon dots (CDs) synthesized from biological sources have attracted much interest in bioimaging and biomedical applications due to their excellent biocompatibility, and thus, a facile synthesis of CDs with high fluorescence quantum yield (QY) is requisite for practical applications. In this work, we report a simple, rapid, and green approach to synthesize photoluminescent CDs using eutrophic algal blooms as the carbon source. This method offers a possibility for large scale production of highly luminescent CDs (QY = 13%) with the average particle size ∼8 nm. These CDs are highly water-soluble and exhibit nanosecond fluorescence lifetime with high photostability, luminescence stability in different environments, low cytotoxicity, and excellent cell permeability. Laser scanning confocal microscopy shows the uptake of CDs by MCF-7 cells, and the destined application of these CDs as a potential biomarker is demonstrated.

Biomass‐Derived Carbon Dots and Their Applications

“…The fluorescence quantum yield of the prepared BCDs was 5.4%. In addition, the preparation of BCDs by microwave method is also rose, eutrophic algae and the like. It has been reported that using rose as carbon source, BCD was prepared by simple and effective microwave method.…”

“…The BCDs emit blue fluorescence with a QY of 13.45% and exhibit a size distribution from 4 to 6 nm without agglomeration. A simple, rapid, and green method for the synthesis of photoluminescent BCDs from eutrophic algae by microwave has been reported. The BCDs were prepared to have an average particle diameter of 8 nm and a fluorescence QY of 13%.…”

A Novel Biomass Derived Carbon Quantum Dots for Highly Sensitive and Selective Detection of Hydrazine

“…Here, I D /I G is found to be 1.27, indicating the presence of high defect density which helps to enhance the electro‐catalytic activity of CQD towards hydrazine detection. This high defect density also serves as a confirmation that the as‐synthesized material was Carbon Quantum dots (CQD) rather than Graphene Quantum dots . XPS analysis can be found in SI.…”

Optimum Method Uploaded Nutrient Solution for Blended Biochar Pellet with Application of Nutrient Releasing Model as Slow Release Fertilizer

“…Phosphorous (P) is essential for maintaining profitable crop production [12,13]. However, it might cause eutrophication in lakes and ponds, thereby destroying the ecosystem [14]. In recent years, attention for biochar has increased because of its absorption abilities [15,16].…”