scholarly journals Effect of heteroatoms on the optical properties and enzymatic activity of N-doped carbon dots

RSC Advances ◽  
2021 ◽  
Vol 11 (31) ◽  
pp. 18776-18782
Author(s):  
Ahyun Lee ◽  
Sohee Yun ◽  
Eun Soo Kang ◽  
Jung Wan Kim ◽  
Jeong Ho Park ◽  
...  
Keyword(s):  
Optical Properties ◽  
Enzymatic Activity ◽  
Physicochemical Properties ◽  
Chemical Bonding ◽  
Carbon Dots ◽  
Dopant Content ◽  
Optical Applications ◽  
Doped Carbon Dots ◽  
The Relationship

The characteristics of N-CDs suitable for their optical applications or for use as nanozymes were demonstrated by rationalizing the relationship between the dopant content (e.g., the amount of doped N and types of chemical bonding) and physicochemical properties.

Tuning Optical Properties of Nitrogen-Doped Carbon Dots Through Fluorescence Resonance Energy Transfer Using Rhodamine B for Ratiometric Sensing of Mercury ion

2021 ◽  
Author(s):  
Alagan Muthurasu ◽  
V GANESH
Keyword(s):  
Optical Properties ◽  
Energy Transfer ◽  
Rhodamine B ◽  
Carbon Dots ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Nitrogen Doped ◽  
Physical Chemical ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Carbon dots (CDs) exhibiting fluorescence property are generally derived from carbonaceous materials and possessing ultra small size with various exciting physical, chemical and photo-properties that have been used in many...

Structure-Optical Property Relationships of Porphyrins

1997 ◽  
Vol 479 ◽  
Author(s):  
Weijie Su ◽  
Thomas M. Cooper ◽  
Nansheng Tang ◽  
Doug Krein ◽  
Hao Jiang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Optical Properties ◽  
Optical Property ◽  
Fluorescence Lifetimes ◽  
Structural Variations ◽  
Reduction Behavior ◽  
Oxidation Reduction ◽  
Optical Applications ◽  
The Relationship

AbstractPorphyrins are attractive compounds for optical applications. We have been investigating the relationship between molecular structure and optical properties of a number of porphyrin compounds. Structural variations explored include insertion of metal ions, extension of conjugation, halogenation and formation of multimers. The characterization of these chromophores includes measurement of UV/Vis, fluorescence and fluorescence lifetimes. Furthermore, we have investigated their nonlinear absorption, refraction, excitation dynamics as well as oxidation/reduction behavior. Based on our observations, clear recommendations can be made for the design of optical limiting chromophores.

N-Doped carbon dot with surface dominant non-linear optical properties

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 95476-95482 ◽  
Author(s):  
Liang Bai ◽  
Shi Qiao ◽  
Hao Li ◽  
Yu Fang ◽  
Yanmei Yang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Carbonyl Group ◽  
Carbon Dots ◽  
Nonlinear Optical ◽  
Third Order ◽  
Carbon Dot ◽  
Nlo Property ◽  
Linear Optical Properties ◽  
Doped Carbon Dots ◽  
Order Susceptibility

Nonlinear optical (NLO) property of N-doped carbon dots was investigated by the Z-scan technique. The carbonyl group on the surface of N-CDs plays a key role and has significant impact on their third order susceptibility χ(3).

Structural and Optical Properties of N-Doped and B-Doped Carbon Dots

2020 ◽  
Vol 61 (5) ◽  
pp. 818-825 ◽  
Author(s):  
A. E. Tomskaya ◽  
I. P. Prosvirin ◽  
M. N. Egorova ◽  
S. A. Smagulova ◽  
I. P. Asanov
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Structural And Optical Properties ◽  
Doped Carbon Dots

scholarly journals Microwave Assisted Synthesis and Optical Properties of Highly Fluorescent N-Doped Carbon Dots

2019 ◽  
Vol 31 (12) ◽  
pp. 2897-2902
Author(s):  
D. Koteswararao ◽  
B. Rajkumar ◽  
K. Prameela ◽  
K. Ashok ◽  
G. Sridevi
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Irradiation Time ◽  
Guanidine Hydrochloride ◽  
Fluorescence Emission ◽  
Microwave Assisted Synthesis ◽  
Solid State Method ◽  
Microwave Assisted ◽  
Wide Range ◽  
Doped Carbon Dots

Herein, a rapid microwave assisted solid state method is reported for the synthesis of highly fluorescent N-doped carbon dots (NCDs) using citric acid as carbon source and guanidine hydrochloride as N-dopant. Synthetic parameters such as microwave power, irradiation time and reactants ratio were optimized to produce high quality N-doped carbon dots. The N-doped carbon dots were well characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), SEM-EDS, FTIR, UV-visible and fluorescence spectroscopies. N-Doped carbon dots exhibited bright emission with a quantum yield of 11 %. Detailed study of their optical properties revealed their excellent property of resistance to photo bleaching, high ionic strength and solution pH. Further they exhibited excitation dependent emission behaviour, high aqueous solubility and a long shelf life of 60 days. This strong fluorescence emission combined with high stability make N-doped carbon dots a promising fluorescent probe for wide range of applications.

scholarly journals Comparison of the effects of synthesis methods of B, N, S, and P-doped carbon dots with high photoluminescence properties on HeLa tumor cells

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 1098-1108
Author(s):  
Aswandi Wibrianto ◽  
Siti Q. Khairunisa ◽  
Satya C. W. Sakti ◽  
Yatim L. Ni'mah ◽  
Bambang Purwanto ◽  
...  
Keyword(s):  
Optical Properties ◽  
Tumor Cells ◽  
Carbon Dots ◽  
Synthesis Methods ◽  
Photoluminescence Properties ◽  
As Doping ◽  
Specific Targeting ◽  
Good Potential ◽  
Doped Carbon Dots ◽  
Boron Carbon

Investigation of the effect of nitrogen, boron, sulphur, and phosphor as doping elements on carbon dots, where boron-carbon dots performed good potential for bioimaging application with best optical properties and specific targeting features.

scholarly journals Fluorescent carbon dots with excellent moisture retention capability for moisturizing lipstick

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Chen Dong ◽  
Mingsheng Xu ◽  
Shuna Wang ◽  
Menghui Ma ◽  
Ozioma U. Akakuru ◽  
...  
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Chemical Processes ◽  
Moisture Retention ◽  
Low Toxicity ◽  
Nano Additives ◽  
First Time ◽  
The Relationship ◽  
Fluorescent Carbon Dots ◽  
Huge Challenge

AbstractLong-lasting moisture retention is a huge challenge to humectants, and effective methods or additives for promote these functions are limited, especially nano-additives. Carbon dots (CDs) have attracted increasing research interest due to its ultra-small size, excellent optical properties and low toxicity, etc. However, most of researches have been focused on the photoexcited CDs and its subsequent photophysical and chemical processes, such as photoluminescence, photodynamic, photothermal and photocatalytic behavior. The intrinsic chemo-physical properties of the pristine CDs are not fully explored. Here, we report an excellent moisture retention capability of a new carmine cochineal-derived CDs (Car-CDs) for the first time. The relationship between the structure of Car-CDs and its moisture retention capability is revealed. More interestingly, the effective applications of Car-CDs in moisturizing lipstick are demonstrated. This work expands the research and application of CDs into a broad, new area, potentially in skin care.

Optical properties of N- and S-doped carbon dots based on citric acid and L-cysteine

2021 ◽  
pp. 1-5
Author(s):  
Niyazbek Ibrayev ◽  
Rumiya Dzhanabekova ◽  
Evgeniya Seliverstova ◽  
Gulnur Amanzholova
Keyword(s):  
Optical Properties ◽  
Citric Acid ◽  
Carbon Dots ◽  
Doped Carbon Dots

Preparation and Optical Properties of N-doped Carbon Dots as Light Stabilizer

2016 ◽  
Vol 37 (6) ◽  
pp. 655-661 ◽  
Author(s):  
王子儒 WANG Zi-ru ◽  
张光华 ZHANG Guang-hua ◽  
郭明媛 GUO Ming-yuan
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Light Stabilizer ◽  
Doped Carbon Dots
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