Synthesis of carbon quantum dots from cabbage with down- and up-conversion photoluminescence properties: excellent imaging agent for biomedical applications

2015 ◽  
Vol 17 (7) ◽  
pp. 3791-3797 ◽  
Author(s):  
Al-Mahmnur Alam ◽  
Byung-Yong Park ◽  
Zafar Khan Ghouri ◽  
Mira Park ◽  
Hak-Yong Kim
Keyword(s):  
Quantum Dots ◽  
Biomedical Applications ◽  
Carbon Quantum Dots ◽  
Imaging Agent ◽  
Photoluminescence Properties ◽  
Bio Imaging

The synthesis of luminescent and biocompatible carbon quantum dots is demonstrated from cabbage, a new carbonaceous biomaterial, for bio-imaging.

scholarly journals Organic dots (O-dots) for theranostic applications: preparation and surface engineering

RSC Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 2253-2291
Author(s):  
Amin Shiralizadeh Dezfuli ◽  
Elmira Kohan ◽  
Sepand Tehrani Fateh ◽  
Neda Alimirzaei ◽  
Hamidreza Arzaghi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photodynamic Therapy ◽  
Photothermal Therapy ◽  
Biomedical Applications ◽  
Surface Engineering ◽  
Graphene Quantum Dots ◽  
Carbon Quantum Dots ◽  
Cargo Delivery ◽  
Bio Imaging ◽  
Theranostic Applications

Organic dots is a term used to represent materials including graphene quantum dots and carbon quantum dots because they rely on the presence of other atoms (O, H, and N) for their photoluminescence or fluorescence properties. Cargo delivery, bio-imaging, photodynamic therapy and photothermal therapy are major biomedical applications of organic dots.

scholarly journals Bioimaging of C2C12 Muscle Myoblasts Using Fluorescent Carbon Quantum Dots Synthesized from Bread

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1575
Author(s):  
Karthiga K. Anpalagan ◽  
Jimsheena V. Karakkat ◽  
Adam Truskewycz ◽  
Ahmed Al Saedi ◽  
Paul Joseph ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cost Effective ◽  
Carbon Quantum Dots ◽  
The Novel ◽  
Photoluminescence Properties ◽  
Broad Emission ◽  
Mineral Acids ◽  
Organic Resource ◽  
Bio Imaging ◽  
Low Cytotoxicity

Biocompatible carbon quantum dots (CQDs) have recently attracted increased interest in biomedical imaging owing to their advantageous photoluminescence properties. Numerous precursors of fluorescent CQDs and various fabrication procedures are also reported in the literature. However; the use of concentrated mineral acids and other corrosive chemicals during the fabrication process curtails their biocompatibility and severely limits the utilization of the products in cell bio-imaging. In this study; a facile; fast; and cost-effective synthetic route is employed to fabricate CQDs from a natural organic resource; namely bread; where the use of any toxic chemicals is eliminated. Thus; the novel chemical-free technique facilitated the production of luminescent CQDs that were endowed with low cytotoxicity and; therefore; suitable candidates for bioimaging sensors. The above mentioned amorphous CQDs also exhibited fluorescence over 360–420 nm excitation wavelengths; and with a broad emission range of 360–600 nm. We have also shown that the CQDs were well internalized by muscle myoblasts (C2C12) and differentiated myotubes; the cell lines which have not been reported before.

Two-Photon Fluorescence and MR Bio-imaging of Endogenous H2O2 in Tumor Microenvironment by a Dual-Mode Nanoprobe

2021 ◽  
Author(s):  
Hongmei Zhong ◽  
Shengrong Yu ◽  
Bingqian Li ◽  
Kangdi He ◽  
Dian Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Tumor Microenvironment ◽  
Mr Imaging ◽  
High Selectivity ◽  
Carbon Quantum Dots ◽  
Dual Mode ◽  
Two Photon ◽  
Bio Imaging ◽  
Two Photon Fluorescence ◽  
Photon Fluorescence

Dual-mode bio-imaging nanoprobe TP-CQDs@MnO2, based two-photon carbon quantum dots and MnO2, has been developed for two-photon fluorescence and MR imaging of endogenous H2O2 in tumor microenvironment, which achieved high selectivity,...

scholarly journals Hydrothermal synthesis of carbon quantum dots from biowaste for bio-imaging

2019 ◽  
Author(s):  
Persia Ada N. de Yro ◽  
Gerald Mari O. Quaichon ◽  
Roland Andrew T. Cruz ◽  
Carlo S. Emolaga ◽  
Mar Christian O. Que ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrothermal Synthesis ◽  
Carbon Quantum Dots ◽  
Bio Imaging

scholarly journals Facile Synthesis of Nitrogen-doped Carbon Quantum Dots for Bio-imaging

2016 ◽  
Vol 43 ◽  
pp. 04002 ◽  
Author(s):  
Persia Ada N. de Yro ◽  
Beejay T. Salon ◽  
Blessie A. Basilia ◽  
Mark Daniel de Luna ◽  
Peerasak Paoprasert
Keyword(s):  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Bio Imaging ◽  
Nitrogen Doped Carbon

Biocompatible Carbon Nanodots for Functional Imaging and Cancer Therapy

2018 ◽  
Vol 7 (2) ◽  
pp. 31-45 ◽  
Author(s):  
Alexandre Roumenov Loukanov ◽  
Hristo Stefanov Gagov ◽  
Milena Yankova Mishonova ◽  
Seiichiro Nakabayashi
Keyword(s):  
Drug Delivery ◽  
Quantum Dots ◽  
Cancer Therapy ◽  
Organic Dyes ◽  
Chemical Properties ◽  
Carbon Quantum Dots ◽  
Photon Absorption ◽  
Carbon Nanodots ◽  
Two Photon ◽  
Bio Imaging

This article describes how carbon quantum dots (C-dots) are tiny carbon nanoparticles (less than 10 nm in size) being envisaged to be used in bio-sensing, bio-imaging and drug delivery nanosystems. Their low toxicity and stable chemical properties make them suitable candidates for new types of fluorescent probe, which overcome the common drawbacks of previous fluorescent probes (organic dyes and inorganic quantum dots). In addition, fluorescent C-dots possess a rather strong ability to bind with other organic and inorganic molecules due to their abundant surface groups. For that reason, fluorescent C-dots can be manipulated via series of controllable chemical treatments in order to satisfy the demands in the photocatalytic, biochemical and chemical sensing, bio-imaging, drug delivery and enhanced cell targeting. In recent studies it was described the development of carbon quantum dots with large two-photon absorption cross sections towards two-photon imaging for use in photodynamic cancer therapy. Thus, C-dots have become a rising star in biomedical research with a promising future for the application in nanomedicine.

One-step synthesis of N, P Co-doped orange carbon quantum dots with novel optical properties for bio-imaging

2020 ◽  
pp. 110618
Author(s):  
Naixin Li ◽  
Fang Lei ◽  
Dandan Xu ◽  
Yong Li ◽  
Jinliang Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Carbon Quantum Dots ◽  
Bio Imaging ◽  
One Step ◽  
Co Doped
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