scholarly journals Carbon and Silicon Fluorescent Nanomaterials

Nanomaterials ◽  
10.5772/25809 ◽  
2011 ◽  
Author(s):  
Joaquim G. G. Esteves da Silva
Keyword(s):  
Fluorescent Nanomaterials

Fluorescent Nanotechnology: An Evolution in Optical Sensors

2020 ◽  
Vol 17 ◽  
Author(s):  
Dilawar Hassan ◽  
Hadi Bakhsh ◽  
Asif M. Khurram ◽  
Shakeel A. Bhutto ◽  
Nida S. Jalbani ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Sensors ◽  
Light Emission ◽  
Environmental Contaminants ◽  
Fluorescent Nanoparticles ◽  
Sensing Applications ◽  
Properties Of Materials ◽  
Optical Properties Of Materials ◽  
Fluorescent Nanomaterials

Background: The optical properties of nanomaterials have evolved enormously with the introduction of nanotechnology. The property of materials to absorb and/or emit specific wavelength has turned them into one of the most favourite candidates to be effectively utilized in different sensing applications e.g organic light emission diodes (OLEDs) sensors, gas sensors, biosensors and fluorescent sensors. These materials have been reported as a sensor in the field of tissue and cell imaging, cancer detection and detection of environmental contaminants etc. Fluorescent nanomaterials are heling in rapid and timely detection of various contaminants that greatly impact the quality of life and food, that is exposed to these contaminants. Later, all the contaminants have been investigated to be most perilous entities that momentously affect the life span of the animals and humans who use those foods which have been contaminated. Objective: In this review, we will discuss about various methods and approaches to synthesize the fluorescent nanoparticles and quantum dots (QDs) and their applications in various fields. The application will include the detection of various environmental contaminants and bio-medical applications. We will discuss the possible mode of action of the nanoparticles when used as sensor for the environmental contaminants as well as the surface modification of some fluorescent nanomaterials with anti-body and enzyme for specific detection in animal kingdom. We will also describe some RAMAN based sensors as well as some optical sensing-based nanosensors. Conclusion: Nanotechnology has enabled to play with the size, shape and morphology of materials in the nanoscale. The physical, chemical and optical properties of materials change dramatically when they are reduced to nanoscale. The optical properties can become choosy in terms of emission or absorption of wavelength in the size range and can result in production of very sensitive optical sensor. The results show that the use of fluorescent nanomaterials for the sensing purposes are helping a great deal in the sensing field.

Microfluidic fabrication of fluorescent nanomaterials: A review

2021 ◽  
pp. 131511
Author(s):  
Liangliang Lin ◽  
Yijian Yin ◽  
Sergey A. Starostin ◽  
Hujun Xu ◽  
Chengdong Li ◽  
...  
Keyword(s):  
Fluorescent Nanomaterials

New fluorescent phenothiazine carboxylates for fluorescent nanomaterials

2021 ◽  
pp. 131174
Author(s):  
Melinda Gal ◽  
Castelia Cristea ◽  
Tamas Lovasz ◽  
Ana-Maria Craciun ◽  
Alexandru Turza ◽  
...  
Keyword(s):  
Fluorescent Nanomaterials

Luminescent assays based on carbon dots for inorganic trace analysis

2015 ◽  
Vol 34 (3-4) ◽  
Author(s):  
Isabel Costas-Mora ◽  
Vanesa Romero ◽  
Isela Lavilla ◽  
Carlos Bendicho
Keyword(s):  
Quantum Dots ◽  
Trace Analysis ◽  
Carbon Dots ◽  
Chemical Species ◽  
Promising Alternative ◽  
Organic Fluorophores ◽  
Optical Nanoprobes ◽  
Fluorescent Nanomaterials

AbstractCarbon dots (CDs) are a recently discovered class of fluorescent nanomaterials with great potential to be applied in the analytical field. CDs have demonstrated to be a promising alternative to conventional organic fluorophores or quantum dots as optical nanoprobes for sensing different chemical species. In this overview, we review the progress in the design of novel nanoprobes based on fluorescent CDs for inorganic trace analysis. Representative examples of CD-based assays are described and the different sensing strategies are discussed.

Harnessing Versatile Dynamic Carbon Precursors for Multi-Color Emissive Carbon Dots

2022 ◽  
Author(s):  
Zitong Wei ◽  
Wenyi Lu ◽  
Ximin Wang ◽  
Jiping Ni ◽  
Umme Hani Prova ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
High Quantum Yield ◽  
Carbon Allotrope ◽  
High Quantum ◽  
Fluorescent Nanomaterials

Carbon dots (CDs), a relatively new kind of fluorescent nanomaterials superior to other contributors of carbon allotrope due to their excellent biocompatibility, controllable photoluminescence, high quantum yield (QY), unique electronic...

scholarly journals Layer-by-layer immobilization of carbon dots fluorescent nanomaterials on single optical fiber

2012 ◽  
Vol 735 ◽  
pp. 90-95 ◽  
Author(s):  
Helena M.R. Gonçalves ◽  
Abel J. Duarte ◽  
Frank Davis ◽  
Seamus P.J. Higson ◽  
Joaquim C.G. Esteves da Silva
Keyword(s):  
Optical Fiber ◽  
Carbon Dots ◽  
Layer By Layer ◽  
Fluorescent Nanomaterials

Beyond native deoxyribonucleic acid, templating fluorescent nanomaterials for bioanalytical applications: A review

2020 ◽  
Vol 1105 ◽  
pp. 11-27 ◽  
Author(s):  
Taiping Qing ◽  
Bo Feng ◽  
Peng Zhang ◽  
Kaiwu Zhang ◽  
Xiaoxiao He ◽  
...  
Keyword(s):  
Deoxyribonucleic Acid ◽  
Bioanalytical Applications ◽  
Fluorescent Nanomaterials

scholarly journals First Step Towards Larger DNA-Based Assemblies of Fluorescent Silver Nanoclusters: Template Design and Detailed Characterization of Optical Properties

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 613 ◽  
Author(s):  
Liam E. Yourston ◽  
Alexander Y. Lushnikov ◽  
Oleg A. Shevchenko ◽  
Kirill A. Afonin ◽  
Alexey V. Krasnoslobodtsev
Keyword(s):  
Optical Properties ◽  
Dna Sequences ◽  
Silver Nanoclusters ◽  
Conformational Heterogeneity ◽  
Individual Element ◽  
Double Stranded Dna ◽  
Close Proximity ◽  
Template Design ◽  
Fluorescent Nanomaterials

Besides being a passive carrier of genetic information, DNA can also serve as an architecture template for the synthesis of novel fluorescent nanomaterials that are arranged in a highly organized network of functional entities such as fluorescent silver nanoclusters (AgNCs). Only a few atoms in size, the properties of AgNCs can be tuned using a variety of templating DNA sequences, overhangs, and neighboring duplex regions. In this study, we explore the properties of AgNCs manufactured on a short DNA sequence—an individual element designed for a construction of a larger DNA-based functional assembly. The effects of close proximity of the double-stranded DNA, the directionality of templating single-stranded sequence, and conformational heterogeneity of the template are presented. We observe differences between designs containing the same AgNC templating sequence—twelve consecutive cytosines, (dC)12. AgNCs synthesized on a single “basic” templating element, (dC)12, emit in “red”. The addition of double-stranded DNA core, required for the larger assemblies, changes optical properties of the silver nanoclusters by adding a new population of clusters emitting in “green”. A new population of “blue” emitting clusters forms only when ssDNA templating sequence is placed on the 5′ end of the double-stranded core. We also compare properties of silver nanoclusters, which were incorporated into a dimeric structure—a first step towards a larger assembly.

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