Synthesis and study of carbon quantum dots (CQDs) for enhancement of luminescence intensity of CQD@LaPO4:Eu3+ nanocomposite

Raikwar, V.R.

doi:10.1016/j.matchemphys.2021.125277

Cited by 33 publications

(7 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 2 depicts the FTIR spectrum of CQD thin film (black spectrum), which was consistent with previous works and contained a variety of functional groups. The existence of abundant hydroxyl groups at the CQD surface was verified by the presence of the characteristic bands of O–H at the 3929, 3780, 3678, 3530 and 3175 cm −1 peaks [ 52 , 53 , 54 , 55 , 56 ]. The peaks appearing at 3031 and 2882 cm −1 were attributed to C–H stretching vibration [ 52 , 55 , 56 , 57 , 58 , 59 , 60 ].…”

Section: Resultsmentioning

confidence: 99%

“…The existence of abundant hydroxyl groups at the CQD surface was verified by the presence of the characteristic bands of O–H at the 3929, 3780, 3678, 3530 and 3175 cm −1 peaks [ 52 , 53 , 54 , 55 , 56 ]. The peaks appearing at 3031 and 2882 cm −1 were attributed to C–H stretching vibration [ 52 , 55 , 56 , 57 , 58 , 59 , 60 ]. The peak located around 2158 cm −1 corresponds to the stretching frequency of alkyne C≡C groups [ 61 , 62 ], and the peak at 2016 cm −1 originated due to C=O stretching of the carboxyl group [ 63 ].…”

Section: Resultsmentioning

confidence: 99%

“…The peaks appearing at 1337 cm −1 originated due to C=C vibration [ 66 ]. The peaks at 1192 and 1028 cm −1 were attributed to C–O–C stretching vibrations [ 56 , 58 , 60 , 67 ], and the peaks located at 886 and 691 cm −1 corresponded to C–H bending vibrations [ 55 ]. The FTIR spectrum obtained for CQD film after exposure to DA (red spectrum) showed a reduction in the intensity of the O–H stretching band at 3780 cm −1 due to the overlap with the N–H stretching vibrations.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Direct and Sensitive Detection of Dopamine Using Carbon Quantum Dots Based Refractive Index Surface Plasmon Resonance Sensor

et al. 2022

View full text Add to dashboard Cite

Abnormality of dopamine (DA), a vital neurotransmitter in the brain’s neuronal pathways, causes several neurological diseases. Rapid and sensitive sensors for DA detection are required for early diagnosis of such disorders. Herein, a carbon quantum dot (CQD)-based refractive index surface plasmon resonance (SPR) sensor was designed. The sensor performance was evaluated for various concentrations of DA. Increasing DA levels yielded blue-shifted SPR dips. The experimental findings revealed an excellent sensitivity response of 0.138°/pM in a linear range from 0.001 to 100 pM and a high binding affinity of 6.234 TM−1. The effects of varied concentrations of DA on the optical characteristics of CQD thin film were further proved theoretically. Increased DA levels decreased the thickness and real part of the refractive index of CQD film, according to fitting results. Furthermore, the observed reduction in surface roughness using AFM demonstrated that DA was bound to the sensor layer. This, in turn, explained the blue shift in SPR reflectance curves. This optical sensor offers great potential as a trustworthy solution for direct measurement due to its simple construction, high sensitivity, and other sensing features.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Direct and Sensitive Detection of Dopamine Using Carbon Quantum Dots Based Refractive Index Surface Plasmon Resonance Sensor

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In this approach, macroscopic carbon structures with distinct graphene networks such as carbon black, activated carbon, CNTs, and graphite powder are scratched and cut. Long processing times, rough reaction conditions, and expensive ingredients and equipment are negative points of top–down method [ 174 , 175 ]. This approach is appropriate for large-scale production.…”

Section: Carbon-based Nanostructuresmentioning

confidence: 99%

Carbon-Based Nanostructures as Emerging Materials for Gene Delivery Applications

Yazdani,

Mozaffarian,

Pazuki

et al. 2024

Pharmaceutics

View full text Add to dashboard Cite

Gene therapeutics are promising for treating diseases at the genetic level, with some already validated for clinical use. Recently, nanostructures have emerged for the targeted delivery of genetic material. Nanomaterials, exhibiting advantageous properties such as a high surface-to-volume ratio, biocompatibility, facile functionalization, substantial loading capacity, and tunable physicochemical characteristics, are recognized as non-viral vectors in gene therapy applications. Despite progress, current non-viral vectors exhibit notably low gene delivery efficiency. Progress in nanotechnology is essential to overcome extracellular and intracellular barriers in gene delivery. Specific nanostructures such as carbon nanotubes (CNTs), carbon quantum dots (CQDs), nanodiamonds (NDs), and similar carbon-based structures can accommodate diverse genetic materials such as plasmid DNA (pDNA), messenger RNA (mRNA), small interference RNA (siRNA), micro RNA (miRNA), and antisense oligonucleotides (AONs). To address challenges such as high toxicity and low transfection efficiency, advancements in the features of carbon-based nanostructures (CBNs) are imperative. This overview delves into three types of CBNs employed as vectors in drug/gene delivery systems, encompassing their synthesis methods, properties, and biomedical applications. Ultimately, we present insights into the opportunities and challenges within the captivating realm of gene delivery using CBNs.

show abstract

“…This method involves heating carbon-based materials with appropriate reagents to produce desired CQDs. Scientists are increasingly focusing on the use of biomass as a starting material for synthesizing CQDs, with examples including pomegranate, 5 aloe vera, 20 banana, 21 and various types of biomass. 22 Such approaches are considered environmentally safe and sustainable.…”

Section: Introductionmentioning

confidence: 99%

Revolutionizing fuel production through biologically synthesized zero-dimensional nanoparticles

Vyas,

Chundawat,

Dharmendra

et al. 2023

Nanoscale Adv.

View full text Add to dashboard Cite

show abstract

Synthesis and study of carbon quantum dots (CQDs) for enhancement of luminescence intensity of CQD@LaPO4:Eu3+ nanocomposite

Cited by 33 publications

References 60 publications

Direct and Sensitive Detection of Dopamine Using Carbon Quantum Dots Based Refractive Index Surface Plasmon Resonance Sensor

Direct and Sensitive Detection of Dopamine Using Carbon Quantum Dots Based Refractive Index Surface Plasmon Resonance Sensor

Carbon-Based Nanostructures as Emerging Materials for Gene Delivery Applications

Revolutionizing fuel production through biologically synthesized zero-dimensional nanoparticles

Contact Info

Product

Resources

About