Dual-excitation and dual-emission carbon dots for Fe3+ detection, temperature sensing, and lysosome targeting

2021 ◽  
Author(s):  
Xiaofeng Li ◽  
Yuejing Bao ◽  
Xiaorui Dong ◽  
Lihong Shi ◽  
Shaomin Shuang
Keyword(s):  
Hydrothermal Treatment ◽  
Carbon Dots ◽  
Temperature Sensing ◽  
Aminosalicylic Acid ◽  
Green Fluorescence ◽  
Dual Emission ◽  
One Step ◽  
Bright Green ◽  
Bright Green Fluorescence

Dual-excitation and dual-emission carbon dots (CDs) have been prepared by simple one-step hydrothermal treatment of p-phenylenediamine and 5-aminosalicylic acid. As-prepared CDs emit bright green fluorescence under the excitation of 320...

Green fluorescence from the hair of Lindow Man

Antiquity ◽  
1993 ◽  
Vol 67 (254) ◽  
pp. 117-119 ◽  
Author(s):  
Gerald J. Smith
Keyword(s):  
The Body ◽  
Green Fluorescence ◽  
Natural Reaction ◽  
Hair Keratin ◽  
Scientific Analysis ◽  
Bright Green ◽  
Bright Green Fluorescence

It has been suggested that the bright green fluorescence shown by the hair of Lindow Man II is due to the use of copper-based pigments for body decoration. However, scientific analysis shows that this fluorescence is due to a natural reaction of the hair keratin with acid in the peat in which the body was buried.

Fe3+ detection, bioimaging, and patterning based on bright blue-fluorescent N-doped carbon dots

The Analyst ◽  
2020 ◽  
Vol 145 (16) ◽  
pp. 5450-5457 ◽  
Author(s):  
Lin Li ◽  
Lihong Shi ◽  
Jing Jia ◽  
Dan Chang ◽  
Chuan Dong ◽  
...  
Keyword(s):  
Hydrothermal Treatment ◽  
Carbon Dots ◽  
Cellular Imaging ◽  
One Step ◽  
Doped Carbon Dots ◽  
Bright Blue

The bright blue fluorescent N-doped carbon dots (N-CDs) was successfully fabricated by one-step hydrothermal treatment of astragalus and was exploited for cellular imaging and patterning.

scholarly journals The Preparation of Green Fluorescence-Emissioned Carbon Dots/Poly(N-Isopropylacrylamide) Temperature-Sensitive Hydrogels and Research on Their Properties

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1171 ◽  
Author(s):  
Dan Zhao ◽  
Wenting Ma ◽  
Rong Wang ◽  
Xinzhou Yang ◽  
Jun Li ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fluorescence Spectra ◽  
Cell Imaging ◽  
Fluorescence Probes ◽  
Excitation Wavelength ◽  
Temperature Sensitive ◽  
Green Fluorescence ◽  
Microscope Imaging ◽  
One Step ◽  
Good Biocompatibility

Fluorescence/temperature-sensitive hydrogels, thanks to their properties in fluorescence and temperature sensitivity, have shown a promising outlook in the fields of drug delivery, cell imaging, etc., and thus become the focus of present research. This paper reports the preparation of green-fluorescence/temperature-sensitive hydrogels through one-step radical polymerization with green fluorescence-emissioned carbon dots as fluorescence probes and N-isopropylacrylamide as a monomer. UV-vis spectra, fluorescence spectra, and fluorescence microscope imaging have been used to characterize the prepared hydrogel, and to study their optical and temperature-sensitive properties. It was discovered that the emission of prepared hydrogel is excitation wavelength-dependent, pH responding, and excellent temperature-sensitive, as well as having good biocompatibility. The prepared hydrogel can also be applied as fluorescence ink in the fields of anti-counterfeit identification and appraisal.

scholarly journals Detection of the Potential Adulterant Teucrium chamaedrys in Scutellaria baicalensis Raw Material and Extract by High-Performance Thin-Layer Chromatography

2009 ◽  
Vol 92 (3) ◽  
pp. 785-788 ◽  
Author(s):  
Thao Hong ◽  
Mijeong Lee Jeong ◽  
Michael Zahn ◽  
Brooke A Fay ◽  
Kangwoo Lee ◽  
...  
Keyword(s):  
Thin Layer ◽  
High Performance ◽  
Raw Material ◽  
Green Fluorescence ◽  
Simple Method ◽  
Bright Green ◽  
Teucrium Chamaedrys ◽  
Layer Chromatography ◽  
Bright Green Fluorescence ◽  
Hptlc Method

Abstract Teucrium chamaedrys (Gemander) has been reported as an adulterant of Scutellaria lateriflora (American skullcap) herbal preparations and is also known to be hepatotoxic. A quick and simple high-performance thin-layer chromatographic (HPTLC) method was developed for the detection of T. chamaedrys (Germander) in S. baicalensis (Chinese skullcap) extract, an ingredient of the proprietary blend product, Univestin. The HPTLC profile of T. chamaedrys was distinguished from that of S. baicalensis by its bright green fluorescence bands. This simple method can be completed in an hour for the quality control of Univestin and its raw material, S. baicalensis. The method is sensitive and can detect T. chamaedrys at levels as low as 0.5 (w/w).

Carbon dots obtained using hydrothermal treatment of formaldehyde. Cell imaging in vitro

Nanoscale ◽  
2014 ◽  
Vol 6 (15) ◽  
pp. 9071-9077 ◽  
Author(s):  
M. Algarra ◽  
M. Pérez-Martín ◽  
M. Cifuentes-Rueda ◽  
J. Jiménez-Jiménez ◽  
J. C. G. Esteves da Silva ◽  
...  
Keyword(s):  
Hydrothermal Treatment ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Step Procedure ◽  
One Step

Highly photoluminescent carbon dots have been prepared in a one step procedure by hydrothermal treatment of formaldehyde at 180 °C.

Carbon dot grafted SrAl2O4:Eu,Dy dual-emitting phosphor for ratiometric temperature sensing

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 89238-89243 ◽  
Author(s):  
Bingfu Lei ◽  
Wei Li ◽  
Haoran Zhang ◽  
Jin Wang ◽  
Yingliang Liu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Temperature Sensing ◽  
Dual Emission ◽  
Carbon Dot

We incorporated carbon dots (CDs) into a SrAl2O4:Eu,Dy phosphor (SAO), and made use of the dual emission from the CDs and SAO within such a composite to realize ratiometric temperature sensing from 100 to 400 K.

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