Visible-light excited polar Dion-Jacobson Rb(Bi1-xEux)2Ti2NbO10 perovskite: Photoluminescence properties and in-vitro bioimaging

2022 ◽  
Author(s):  
Debendra Prasad Panda ◽  
Akash Kumar Singh ◽  
Tapas Kumar Kundu ◽  
Sundaresan Athinarayanan
Keyword(s):  
Quantum Dots ◽  
Rare Earth ◽  
Visible Light ◽  
Organic Dyes ◽  
Photoluminescence Properties ◽  
Rare Earth Ion

Rare-earth ion-activated oxide phosphors are beneficial to overcome the problems like photobleaching, reduced lifetime, and the blinking of organic dyes and quantum dots for bioimaging applications. In this work, we...

scholarly journals Synthesis, structures and properties of six lanthanide complexes based on a 2-(2-carboxyphenyl)imidazo(4,5-f)-(1,10)phenanthroline ligand

RSC Advances ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 3102-3112 ◽  
Author(s):  
Shanshan Ren ◽  
Wei Jiang ◽  
Qingwei Wang ◽  
Zhimin Li ◽  
Yu Qiao ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Lanthanide Complexes ◽  
Organic Dyes ◽  
Photoluminescence Properties ◽  
Thermal Stabilities ◽  
Structures And Properties ◽  
Photocatalytic Activities ◽  
Phenanthroline Ligand ◽  
Dyes Degradation

Six lanthanide complexes based on 2-HNCP possess good thermal stabilities, characteristic photoluminescence properties, and photocatalytic activities for organic dyes degradation under visible light irradiation.

Photoluminescence properties of rare-earth ion-doped Na5YSi4O12-based glass ceramics

2021 ◽  
Vol 47 (2) ◽  
pp. 1940-1948
Author(s):  
Toshinori Okura ◽  
Yuta Nojima ◽  
Koji Kawada ◽  
Yoshiyuki Kojima ◽  
Kimihiro Yamashita
Keyword(s):  
Rare Earth ◽  
Glass Ceramics ◽  
Photoluminescence Properties ◽  
Rare Earth Ion

Effects of Al Addition on Photoluminescence Properties in Rare-Earth Ion-Doped SrTiO[sub 3]

2000 ◽  
Vol 147 (6) ◽  
pp. 2389 ◽  
Author(s):  
Shinji Okamoto ◽  
Hiroshi Kobayashi ◽  
Hajime Yamamoto
Keyword(s):  
Rare Earth ◽  
Photoluminescence Properties ◽  
Rare Earth Ion ◽  
Al Addition

scholarly journals Application of Quantum Dots in Biological Imaging

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Shan Jin ◽  
Yanxi Hu ◽  
Zhanjun Gu ◽  
Lei Liu ◽  
Hai-Chen Wu
Keyword(s):  
Quantum Dots ◽  
Organic Dyes ◽  
Rapid Development ◽  
Emission Spectra ◽  
Major Type ◽  
Biological Applications ◽  
Biological Studies ◽  
Polymer Dots

Quantum dots (QDs) are a group of semiconducting nanomaterials with unique optical and electronic properties. They have distinct advantages over traditional fluorescent organic dyes in chemical and biological studies in terms of tunable emission spectra, signal brightness, photostability, and so forth. Currently, the major type of QDs is the heavy metal-containing II-IV, IV-VI, or III-V QDs. Silicon QDs and conjugated polymer dots have also been developed in order to lower the potential toxicity of the fluorescent probes for biological applications. Aqueous solubility is the common problem for all types of QDs when they are employed in the biological researches, such asin vitroandin vivoimaging. To circumvent this problem, ligand exchange and polymer coating are proven to be effective, besides synthesizing QDs in aqueous solutions directly. However, toxicity is another big concern especially forin vivostudies. Ligand protection and core/shell structure can partly solve this problem. With the rapid development of QDs research, new elements and new morphologies have been introduced to this area to fabricate more safe and efficient QDs for biological applications.

Tailoring the optical, magnetic, and photocatalytic properties of ZnS quantum dots by rare-earth ion doping

2020 ◽  
Vol 753 ◽  
pp. 137609 ◽  
Author(s):  
B. Poornaprakash ◽  
U. Chalapathi ◽  
Mirgender Kumar ◽  
Beerelli Rajitha ◽  
B. Purusottam Reddy ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Rare Earth ◽  
Photocatalytic Properties ◽  
Rare Earth Ion ◽  
Ion Doping

scholarly journals Visible Light Photocatalysis with Rare Earth Ion-Doped Nanocomposites

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Himanshu Narayan ◽  
Hailemichael Alemu ◽  
Lijeloang Setofolo ◽  
Lebohang Macheli
Keyword(s):  
Particle Size ◽  
Rare Earth ◽  
Visible Light ◽  
Apparent Rate Constant ◽  
Rare Earth Ions ◽  
Rare Earth Ion ◽  
Effective Suppression ◽  
Co Precipitation ◽  
Average Size ◽  
Visible Light Photocatalytic

Rare earth (R) ion-doped TiO2 nanocomposites (NCs) with general composition (R: Y, Yb, Gd; , 0.2) were synthesized through co-precipitation/hydrolysis (CPH). NC particles with average size of approximately a few tens of nm were obtained. Similar compositions of polycrystalline (PC) samples with larger particle size were also prepared employing solid state reaction (SSR) method. Visible light photocatalytic activity of all samples was investigated for degradation of Congo red (CR) dye. Both in terms of apparent rate constant () and percent degradation after 180 min (), all NCs produced significantly enhanced degradation as compared to pure TiO2 and PC samples. Best degradation of 95% ( value) resulted with composition of Y3+ doped NC with  min−1. This was followed by of 85 and 80%, produced with Yb3+ and Gd3+ doped, NCs, at around and  min−1, respectively. The observations clearly suggest that enhanced photocatalytic degradation of CR is directly related to smaller particle size of the catalysts. Moreover, the presence of rare earth ions in the composites facilitates further improvement of degradation efficiency through effective suppression of recombination.

scholarly journals Conjugation of nanomaterials containing rare-earth ion Tb3+ with CD133 monoclonal antibody and its potentials for labeling colon cancer cells (HT-29)

2020 ◽  
Vol 17 (3) ◽  
pp. 427-433
Author(s):  
Le Nhat Minh ◽  
Vo Trong Nhan ◽  
Nguyen Thi Nga ◽  
Tran Thu Huong ◽  
Phung Thi Kim Hue ◽  
...  
Keyword(s):  
Monoclonal Antibody ◽  
Colon Cancer ◽  
Rare Earth ◽  
Cancer Cells ◽  
Human Colon ◽  
Colon Cancer Cells ◽  
Rare Earth Ion ◽  
Human Colon Cancer ◽  
Ht 29

Nanotechnology is the key technology that brings many important applications in biomedical research.Nanolantanites present high stability, easy fabrication and functionalization. Tb3+ ion-containing nanomaterial, a specific type of nanolantanites, possess great prospects. In addition, cancer stem cells (CSCs) are directlyrelated to drug resistance, metastasis, recurrent cancer, etc. Therefore, CSCs are considered as the target forcancer researching and for discovery of more effective therapies. CD133, a trans-membrane glycoprotein, isone of the typical markers that are found to appear very commonly on the surface of many types of CSCs. Inthis study, CD133 monoclonal antibody (MAb) was cojugated with nanomaterials containing Tb3+. Thecoupling between fluorescented nanomaterials containing Tb3+ ions and CD133 MAb was then incubated withhuman colon cancer cells (HT-29) to evaluate its ability to label CSCs in vitro. The results showed thatnanorods containing rare-earth based Tb3+ ions which were fabricated by hydrothermal method, present thelength of about 300 - 800 nm and the diameter in range of 40 - 50 nm. The Tb3+ nanoparticals also havehexagonal structure of terbium phosphate monohydrate and green illuminant. Tb3+ nanorods were also furthersurface silica coated and amino-silane functionalized. This nanostructure was successfully combined withmonoclonal antibodies against CD133 which labelled the surface marker of HT-29 human colon cancer cells.As a result, the combination of CD133+TbPO4@Silica-NH2 (functionalized surface) showed strongerluminescence than the CD133+TbPO4 unfunctionalized combination.

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