Shuang Er

• Dalian minzu university

Carbon dots (CDs) as a newfangled and eco-friendly nanomaterial exhibit a promising engineering application in strengthening mechanical properties of cement matrices. However, the modification effectiveness of CDs on mechanical performance lacks enough investigation. More seriously, the influence of their sizes is still a research gap, enormously h...

Herein, small‐sized fluorescent carbon nanoparticles (CNs) with tunable shapes ranging from spheres to various rods with aspect ratios (ARs) of 1.00, 1.51, 1.89, and 2.85 are prepared using a simple anion‐directed strategy for the first time. Based on comprehensive morphological and structural characteristics of CNs, along with theoretical calculat...

Herein, small‐sized fluorescent carbon nanoparticles (CNs) with tunable shapes ranging from spheres to various rods with aspect ratios (ARs) of 1.00, 1.51, 1.89, and 2.85 are prepared using a simple anion‐directed strategy for the first time. And based on comprehensive morphological and structural characteristics of CNs, along with theoretical calc...

Carbon dots (CDs) have been extensively employed in biomolecule imaging. However, the imaging of biological enzymes with CDs has not been reported, which greatly limits their application in biological imaging. Herein, for the first time, a new type of fluorescent CDs is elaborately designed to realize the direct mapping of alkaline phosphatase (ALP...

The weakly alkaline microenvironment (pH ~8.0) in mitochondria plays a vital role in maintaining its morphology and function. Thus monitoring mitochondrial pH (pHmito) is of great significance. Herein, a ratiometric fluorescent probe (ENBT) for pHmito imaging in mitochondria of living cells is reported. pH variation closely correlates to intramolec...

A multifunctional metal-organic framework (MOF) hybrid Zr-FeTCPP-MOF is fabricated with 2-aminoterephthalic acid (NH2-BDC) and Fe (III) meso-Tetra (4-carboxyphenyl) porphine chloride (FeTCPPCl) participating in the coordination to Zr6 clusters via one-pot hydrothermal method. The adsorption of phosphoproteins on the surface of Zr-FeTCPP-MOF hybrid...

Carbon dots (CDs) have opened up a new field of carbon nanomaterials and successively attracted increasing attention since their discovery in 2004. Owing to their ultrasmall size, tunable surface functional groups, excellent dispersibility, attractive stability, low toxicity, environmental friendliness, facile synthesis and low-cost precursors, CDs...

It is a considerable challenge to develop environmental friendly, low-cost methodology for green preparation of carbon dots (CDs). Herein, CDs with different surface states are prepared using o-phenylenediamine (o-PD) and hydroquinone (HQ) as precursors via oxidation/polymerization and Schiff base reaction at room temperature without additional oxi...

Correction for ‘Carbon dots with tunable dual emissions: from the mechanism to the specific imaging of endoplasmic reticulum polarity’ by Shuang E et al. , Nanoscale , 2020, 12 , 6852–6860, DOI: 10.1039/C9NR10982J.

There has been growing interest in preparing silver nanoparticles (AgNPs) under mild conditions in short time and using AgNPs to detect hydrogen peroxide. Here, we report the facile preparation of AgNPs by co-incubating AgNO3 and ionic liquid (IL) 1-carboxymethyl-3-methylimidazolium nitrate (HO2CMIMNO3) modified carbon dots (NO3-CDs) under mild cir...

Regulating the fluorescence of carbon dots (CDs) is important but highly challenging. Here carbon dots with tunable dual-emissions are facilely fabricated via modulating the polymerization and carbonization processes of o-phenylenediamine (OPD) with lysine (Lys) as co-precursor and modulator. The self-polymerization/carbonization of OPD molecules c...

Real-time monitoring of intracellular pH is of great significance due to its essential role in physiological and pathological processes. In present work, the ionic liquid (IL) N-methyl-6-hydroxyquinolinium bis(trifluoromethylsulfonyl) imide ([6MQc][NTf2]) is proposed as a fluorescence probe for the quantitative imaging of intracellular pH in respon...

Over the past few years, artificial enzymes have attracted enormous attention due to their high stabilities and cost-effective productions. In this work, metal-organic frameworks-derived SiW12@Co3O4 was synthesized in large quantities by stirring the mixture at ambient temperature and calcination. The obtained SiW12@Co3O4 exhibited a highly inheren...

Carbon dots (CDs) were prepared by a solvent-involved molecular fusion strategy using o-phenylenediamine (OPD) as the carbon source and formamide as the reaction solvent. The CDs possessed not only the functional groups inherited from the carbon source and the reaction solvent, but also numerous C=N groups in the structure, resulting from the Schif...

Metal nanoclusters (NCs) have been being a focus due to their superior optical properties, while their biomedical applications are limited by the relative low quantum yield and poor cellular uptaking behaviors. In present study, a pomegranate-type architecture with densely-packed AuAg NCs is constructed, where the amino-terminated dendritic silica...

In general, copper nanoclusters (CuNCs) possess very low or even virtually no bactericidal effect. Herein, we report a novel CuNCs possessing significantly high antibacterial activity, that is tannic acid (TA) capped CuNCs (TA-CuNCs). TA-CuNCs exhibit strong absorption and excitation-dependent fluorescence within pH 2–12, resulting from the function...

Organelles play crucial roles in cellular activities and the functions of organelles are related greatly to the pH values, therefore, the bio-imaging of targeted organelles and related pH sensing is of great importance in biological assays. Herein we report the fluorescent imaging of specific organelles, i.e., lysosome and endoplasmic reticulum, an...

As important biomarkers, glycoprotein sensing is frequently facilitated by boronic acid binding with its cis-diols. However, boronic acid based sensors suffer from drawbacks of alkali restriction and/or sensitivity limitation. Herein, we report boronic acid decorated g-C3N4 nanosheets (B-g-CN) with Wulff-type boronic acid feature, which selectively...

Tunable fluorescent emission and applications in both in vitro and in vivo imaging of hydrophobic carbon nanodots (CNDs) with rapid penetration capability is reported. The hydrophobic CNDs are prepared via hydrothermal treatment of ionic liquid 1-ethyl-3-methylimidazolium bromide. FT-IR and XPS analysis results indicate that the hydrophobicity orig...