Abstract Machine learning holds significant research potential in the field of nanotechnology, enabling nanomaterial structure and property predictions, facilitating materials design discovery, reducing need for time‐consuming labor‐intensive experiments simulations. In contrast to their achiral counterparts, application machine chiral nanomaterials is still its infancy, with a limited number publications date. This despite great advance development new sustainable high values optical...

Core/shell quantum dots (QDs) are of high scientific and technological importance as these nanomaterials have found a number valuable applications. In this paper, we investigated the dependence optical activity photoluminescence upon CdS shell thickness in range core-shell structured CdSe/CdS QDs capped with chiral ligands. For our study, five samples were synthesized utilizing successive ion layer adsorption reaction to vary from 0.5 2 nm, 2.8 nm diameter CdSe core. Following this, ligand...

Chiroptically active fluorescent semiconductor nanocrystals, quantum dots (QDs), are of high interest from a theoretical and technological point view, because they promising candidates for range potential applications. Optical activity can be induced in QDs by capping them with chiral molecules, resulting circular dichroism (CD) signals the QD ultraviolet–visible (UV-vis) absorption. However, effects ligand concentration binding modes on chiroptical properties still poorly understood. In...

Stable water-soluble complexes of Cd-free ZnSe/ZnS quantum dots (QDs) and chlorin e6 have been prepared. These shown approximately 50% intracomplex fluorescence resonance energy transfer from QDs to e6. The photodynamic therapy (PDT) test the against Erlich acsite carcinoma cell culture demonstrated a two-fold enhancement cancer destruction as compared that free molecules. It was PDT effect significantly increased due two factors: efficient QD–chlorin photoexcitation improvement cellular...

Abstract Chirality is one of the most fascinating occurrences in natural world and plays a crucial role chemistry, biochemistry, pharmacology, medicine. has also been envisaged to play an important nanotechnology particularly nanophotonics, therefore, chiral chiroptical active nanoparticles (NPs) have attracted lot interest over recent years. Optical activity can be induced NPs several different ways, including via direct interaction achiral with molecule. This results circular dichroism...

Chiral carbon dots have been produced <italic>via</italic> two synthetic approaches using <sc>l/d</sc>-cysteine resulting in improvement of emission quantum yield and realization two-photon absorption which are attractive features for bio applications.

The influence of the chirality semiconductor nanocrystals, CdSe/ZnS quantum dots (QDs) capped with L- and D-cysteine, on efficiency their uptake by living Ehrlich Ascite carcinoma cells is studied spectral- time-resolved fluorescence microspectroscopy. We report an evident enantioselective process where cellular L-Cys QDs almost twice as effective that D-Cys QDs. This finding paves way for creation novel approaches to control biological properties behavior nanomaterials in cells.

Organic, polymeric, and inorganic nanomaterials with radially diverging dendritic segments are known for their optical, physical, chemical, biological properties inaccessible traditional spheroidal particles. However, a methodology to quantitatively link complex architecture measurable is difficult due the characteristically large degree of disorder, which essential observed property sets. Here, we address this conceptual problem using dendrimer-shaped gold particles distinct stochastic...

Quantum dot (QD) based nanomaterials are very promising materials for the fabrication of optoelectronic devices like solar cells, light emitting diodes (LEDs), and photodetectors as well reporters chemo- biosensing bioimaging. Many these applications involve monitoring changes in photoluminescence intensity energy transfer processes which can strongly depend on excitation wavelength or energy. In this work, we analyzed dependence (EED) quantum yields (PL QYs) decay kinetics circular...

We report a new optical sensing approach based on the chiral recognition of optically active CoFe₂O₄magnetic nanoparticles by CdSe/CdS core/shell quantum dots stabilized with cysteine different chiralities.

Chirality strongly influences many biological properties of materials, such as cell accumulation, enzymatic activity, and toxicity. In the past decade, it has been shown that quantum dots (QDs), fluorescent semiconductor nanoparticles with unique optical properties, can demonstrate activity due to chiral ligands bound on their surface. Optically active QDs could find potential applications in biomedical research, therapy, diagnostics. Consequently, is very important investigate interaction...

Ternary quantum dots (QDs) are very promising nanomaterials with a range of potential applications in photovoltaics, light-emitting devices, and biomedicine. Despite quite intensive studies ternary QDs over the last years, specific relaxation channels involved their emission mechanisms still poorly understood, particularly corresponding core-shell nanostructures. In present work, we have studied recombination pathways AgInS2 stabilized ZnAgInS alloy layer ZnS shell (AIS/ZAIS/ZnS QDs) using...

Magnetic, optical, and structural properties of superparamagnetic CoFe2O4 nanoparticles (MNPs), both isolated in aggregates, are investigated by magnetic circular dichroism (MCD) spectroscopy. The MCD signal for MNPs is more than an order magnitude greater the organic molecules, therefore making this technique a very sensitive tool examination MNP properties. aggregation had distinct effect upon intensity. Correlation between intensity magnetization shows that colloidal solutions results...

Influence of semiconductor nanocrystal diameter and shell thickness on optical activity chiral organic molecule is reported.

Nowadays, multiplex analysis is very popular, since it allows to detect a large number of biomarkers simultaneously. Traditional usually based on changes photoluminescence (PL) intensity and/or PL band spectral positions in the presence analytes. Using lifetime as an additional parameter might increase efficiency methods. Quantum dots (QDs) can be used luminescent markers for analysis. Ternary in-based QDs are great alternative traditional Cd-based one. possess all advantages QDs, including...

In present study complexes between non-toxic ZnSe/ZnS quantum dots and chlorin e6 molecules that are widely used as photosensitizers in photodynamic therapy were formed. It was found aqueous solution cationic formed stable exhibit efficient photoexcitation energy transfer from to molecules. Spectroscopic methods applied evaluate the efficiency. Stoichiometry of these studied. Additionally, efficacy dotchlorin vitro assessed against Ehrlich ascites carcinoma cancer cell line using a trypan...

Here we report on the development and investigation of a novel multiplex assay model based polymer microspheres (PMS) encoded with ternary AIS/ZnS quantum dots (QDs). The system was prepared via layer-by-layer deposition technique. Our studies Förster resonance energy transfer (FRET) between QD-encoded two different cyanine dyes have demonstrated that QD photoluminescence (PL) quenching steadily increases decrease in QD-dye distance. We found sensitized dye PL intensity demonstrates clear...

Chirality is a fundamental phenomenon in biological systems, since most of the biomolecules and components species are chiral therefore recognize respond differently depending on enantiomer present. With increasing research into use nanomaterials for biomedical purposes, it essential to understand role that chirality nanoparticles plays at cellular level. Here, cysteine functionalization mesoporous silica has been shown broadly affect its interaction with U87 MG human glioblastoma cell,...

Photophysical properties of complexes semiconductor quantum dots with conventional photosensitizers for photodynamic therapy (tetrapyrroles) were investigated. A luminescent study in aqueous solutions was performed using spectral- and time-resolved luminescence spectroscopy. It found that increasing the photosensitizer relative concentration resulted sharp drop nonradiative energy transfer efficiency yield photoluminescence. This fact indicates additional channels dissipation may take place...

Photophysical properties of complexes semiconductor quantum dots with conventional photosensitizers for photodynamic therapy (tetrapyrroles) were investigated. A luminescent study in aqueous solutions was performed using spectral- and time-resolved luminescence spectroscopy. It found that increasing the photosensitizer relative concentration resulted sharp drop nonradiative energy transfer efficiency yield photoluminescence. This fact indicates additional channels dissipation may take place...

This manuscript presents an interesting new CdSe/CdS dot in rod morphology, termed the ‘nanonail’, produced via a controlled seeded hot injection approach.

Here we report our investigations of the formation conditions and photophysical properties complexes between luminescent semiconducting nanoparticles (quantum dots, QDs) photosensitizer chlorin e6, which is widely used for photodynamic therapy. In complexes, bovine serum albumin (BSA), most abundant protein in blood serum, was as a linker QDs e6 molecules. The influence BSA on optical Ce6 properly examined using spectral-luminescent methods. It found that passivated QD surface substantially...