Photoluminescence quantum yield

In this study, the LTAQ phenomenon is investigated for CdSe bare-cores, CdSe/CdS core/shell and CdSe/CdS/ZnS core/double shell nanostructures prepared using the hot injection method. To eliminate the influence of the ligands used during preparation, the NC samples were purified prior to the investigation of their characteristics.

12p vidudley 20-02-2023 8 2   Download

This study aimed to synthesize an oligo(azomethine-ether) with benzothiazole moiety in organic medium by means of chemical oxidative polycondensation (OP). Optical properties were examined by photoluminescence (PL) and UV-Vis measurements both in solutions and solid film involved a poly (methyl methacrylate) (PMMA) matrix. Oligomer film in the PMMA matrix emitted a fine green light with a fluorescence quantum yield (QY) of 3.30%. Spectral and thermal observations showed a high rate of C–O–C coupling (cross-linking) for the oligomer.

18p langthannam 29-12-2021 7 1   Download

In this article, we have reviewed the recent progress made in this newest member of carbon nanomaterials, focusing on their synthetic strategies namely top-down and bottom-up methods. In addition, their properties including morphology and structure, compositions, optical properties (absorbance, photoluminescence properties, quantum yields and luminescence mechanisms) have been presented.

14p caygaocaolon11 18-04-2021 27 3   Download

Aluminium tris(4-morpholinyl-8-hydroxyquinoline) has been synthesized and characterized. The photoluminescence measurements showed that the new derivative is blue shifted and has relative photoluminescence quantum yield two times higher compared to the pristine Al tris(8- hydroxyquinoline). Deferential scanning colorimetric studies revealed that the newly synthesized Alq3 derivative in this work is amorphous material with the highest transition glass temperature value among the reported amorphous Alq3 derivatives.

5p kethamoi1 17-11-2019 11 1   Download

Recently, carbon dots (CDs) have attracted great attention due to their superior properties, such as biocompatibility, fluorescence, high quantum yield, and uniform distribution. These characteristics make CDs interesting for bioimaging, therapeutic delivery, optogenetics, and theranostics. Photoluminescence (PL) properties enable CDs to act as imaging-trackable gene nanocarriers, while cationic CDs with high transfection efficiency have been applied for plasmid DNA and siRNA delivery.

13p caygaocaolon1 13-11-2019 7 0   Download