In this paper, we have presented a novel strategy to fabricate fluorescent boronic acid modified carbon dots (C-dots) for nonenzymatic blood glucose sensing applications. The functionalized C-dots are obtained by one-step hydrothermal carbonization, using phenylboronic as the sole precursor. Compared with conventional two-step fabrication of nanoparticle-based sensors, present "synthesis-modification integration" is simpler and more efficient. added selectively leads assembly fluorescence...

We herein present a three-in-one nanoplatform for sensing, self-assembly, and cascade catalysis, enabled by cyclodextrin modified gold nanoparticles (CD@AuNPs). Monodisperse AuNPs 15–20 nm in diameter are fabricated an eco-friendly way the proposed one-step colloidal synthesis method using CD as both reducing agents stabilizers. First, as-prepared employed not only scaffolds but energy acceptors turn-on fluorescent sensing based on guest replacement reaction. Then, macrocyclic supramolecule...

In this study, we design a homogeneous system consisting of Ag nanoprisms and glucose oxidase (GOx) for simple, sensitive, low-cost colorimetric sensing in serum. The unmodified GOx are first mixed with each other. Glucose is then added the mixture. Finally, nanoplates etched from triangle to round by H2O2 produced enzymatic oxidation, which leads more than 120 nm blue shift surface plasmon resonance (SPR) absorption band nanoplates. This large wavelength can be used not only visual...

In this study, we design a FRET system consisting of gold nanorod (AuNR) and quantum dots (QDs) for turn-on fluorescent sensing 2,4,6-trinitrotoluene (TNT) in near-infrared region. The amine-terminated AuNR carboxyl-terminated QDs first form compact hybrid assembly through amine−carboxyl attractive interaction, which leads to high-efficiency (>92%) from AuNRs an almost complete emission quenching. Next, added TNT molecules break the preformed because they can replace around AuNRs, based on...

In this study, a novel Au nanocluster (NC)-based fluorescent sensor has been designed for near-infrared (NIR) and turn-on sensing of glutathione (GSH) in both living cells human blood samples. The large Stokes-shifted (140 nm) NCs with NIR emission long-wavelength excitation have rapidly synthesized 2 h by means microwave-assisted method aqueous solution. addition HgII leads to an almost complete quenching (98%) because the interaction AuI on surface NCs. After introducing GSH NC–HgII...

We herein report aqueous fabrication of well-defined Au@Cu2–xE (E = S, Se) core@shell dual plasmonic supraparticles (SPs) for multimodal imaging and tumor therapy at the in vivo level. By means a modified self-limiting self-assembly based strategy, monodisperse SPs, including spherical Au@Cu2–xS Au@Cu2–xSe rod-like are reliably eco-friendly fabricated solution. Due to coupling from core shell materials, as-prepared hybrid products possess an extremely large extinction coefficient (9.32 L g–1...

Monodisperse inorganic supraparticles (SPs) are an emerging and hot research topic in the chemistry, physics materials science communities past several years. SPs exhibit unique physiochemical properties due to their well-defined shape distinctive topological structure. This review summarizes recent progress study of formation mechanism, applications monodisperse SPs. The future developments this area also discussed.

We present herein the first reported self-assembly modulation of gold nanorods (AuNRs) by enzymatic reaction, which is further employed for colorimetric assays cholinesterase (ChE) and organophosphate pesticides (OPs) in human blood. ChE catalyzes its substrate (acetylthiocholine) produces thiocholine acetate acid. The resulting thiols then react with tips AuNRs S-Au conjunction prevent subsequent cysteine-induced AuNR end-to-end (EE) self-assembly. Correspondingly, surface plasmon resonance...

Carbon dot (C-dot) separation/purification is not only a fundamental chemical issue but also an essential precondition for revealing C-dots' true nature. To date, adequate separation of C-dots has remained open question due to the lack appropriate fine system. Herein, we discover and reveal that polyamide chromatography can provide versatile powerful performances C-dot separation. By joint study experiments all-atom molecular dynamics simulations, demonstrate multiple interaction forces,...

Mesoporous chromia with ordered three-dimensional (3D) hexagonal polycrystalline structures were fabricated at 130, 180, 240, 280, and 350 °C in an autoclave through a novel solvent-free route using KIT-6 as the hard template. The as-obtained materials characterized (by means of X-ray diffraction, transmission electron microscopy, N2 adsorption−desorption, temperature-programmed reduction, photoelectron spectroscopy techniques) tested catalyst for complete oxidation toluene ethyl acetate. We...

Highly ordered mesoporous MnO2 and Co3O4 are prepared by adopting an SBA-16-based nanocasting strategy under ultrasonic irradiation characterized means of numerous techniques. It is shown that the as-fabricated manganese cobalt oxides possess well-ordered architectures with polycrystalline pore walls. With assistance waves, metal precursors can readily diffuse from bulk solution to inner pores silica template. The repeated four-step fabrication process, filling → filtration washing...

Three-dimensionally (3D) ordered macroporous (3DOM) iron oxides with nanovoids in the rhombohedrally crystallized walls were fabricated by adopting dual-templating [Pluronic P123 and poly(methyl methacrylate) (PMMA) colloidal microspheres] strategy ferric nitrate as metal precursor an ethanol or ethylene glycol methanol mixed solution after calcination at 550 °C. The possible formation mechanisms of such architectured materials discussed. physicochemical properties characterized means...

Abstract We herein demonstrate robust two‐dimensional (2D) UFO‐shaped plasmonic supraparticles made of gold nanoparticles (AuNPs) and MnO 2 nanosheets (denoted as AMNS‐SPs) for directly monitoring cell membrane vesiculation at the single‐particle level. Because decorated are ultrathin (4.2 nm) have large diameters (230 nm), they flexible enough deformation folding parceling AuNPs during endocytosis process. Correspondingly, surrounding refractive index increases dramatically, which results...

In this study, we present a simple but effective fluorescent system for highly sensitive and versatile sensing of 2,4,6-trinitrotoluene (TNT) using few layered planar MoS2 quantum dots (QDs) as reporters. Excitation-independent emitting QDs were first fabricated by the proposed ultrasonic-hydrothermal-based top-down method assisted carbon-free hydroxylamine hydrochloride. The obtained pristine then modified with cysteine introducing amino groups TNT binding sites. as-prepared possess...

The design, catalytic process, and property study of nanozymes are importance for both fundamental research application demand. Here, the peroxidase-mimicking properties a series carbon dots (C-dots) was systematically investigated they were found to be probably closer their natural counterparts, as compared known corresponding nanozymes. Firstly, four kinds metal-free surface-modulated C-dots bottom-up fabricated using glucose, α-cyclodextrin (CD), β-CD, γ-CD precursors, respectively,...

The exploration of magnetic resonance imaging (MRI) agents possessing excellent performances and high biosafety is great importance for both fundamental science research biomedical applications. In this study, we present that monodisperse Fe2O3 supraparticles (SPs) can act as T1-weighted MRI agents, which not only possess a distinct off–on switch in the tumor microenvironment but also are readily excreted from living bodies due to its quasi-amorphous structure hierarchical topology design....

Type-II core/shell CdTe/CdSe quantum dots (QDs) were synthesized in aqueous medium by employing thiol-capped CdTe QDs as core template and CdCl2 Na2SeSO3 shell precursors, respectively. Compared with the original cores, showed an obvious red-shifted emission color-tune capability to near-infrared (NIR) wavelength, because of formation indirect excitation. The prepared exhibited high stability moderate fluorescence yields (10–20%), their heterostructure was characterized UV-vis absorption,...