Additional file 1: Figure S1. a of A Resumable Fluorescent Probe BHN-Fe3O4@SiO2 Hybrid Nanostructure for Fe3+ and its Application in Bioimaging

Magnetization curve of BHN-Fe3O4@SiO2. b UV-Vis spectra of BHN-IPTES, Fe3O4@SiO2, and BHN-Fe3O4@SiO2. (PDF 57 kb

Self-Cross-Linking Degradable Polymers for Antifouling Coatings

Degradable polymers with protein resistance can find applications in antibiofouling. We have prepared copolymer of 2-methylene-1,3-dioxepane (MDO), 2-(dimethylamino) ethyl methacrylate (DEM) and 3-(methacryloxypropyl) trimethoxysilane (KH570) via radical ring-opening polymerization, where MDO, DEM, and KH570 make the polymer degradable, protein resistant and self-cross-linkable, respectively. Our studies demonstrate that the self-cross-linking significantly improves the coating ability of the polymer with controlled biodegradation in seawater. We have investigated the adsorption of fibrinogen, bovine serum albumin and lysozyme on the self-cross-linking polymer surface as a function of its composition by use of quartz crystal microbalance with dissipation (QCM-D). It shows the polymer network can resist the adsorption of proteins in seawater. The antibacterial adhesion of the polymer network was evaluated by using <i>Micrococcus luteus</i> (<i>M. luteus</i>) and <i>Pseudomonas</i> sp., revealing that the polymer network can effectively inhibit the settlement of marine bacteria

Flow chart from the identification of studies.

<p><b>LC, leptin concentration.</b></p

<i>r</i> between LC and age in PW in the included studies.

*<p>N: no correction.</p

Forest plot indicating the <i>r</i> between LC and body mass index (BMI) of postmenopausal women (PW).

<p>Horizontal lines denote 95% confidence interval (CIs); the diamond indicates the combined r with the corresponding 95% CI.</p

Inhibition of Marine Biofouling by Use of Degradable and Hydrolyzable Silyl Acrylate Copolymer

Silyl acrylate copolymers are promising materials for marine antibiofouling. However, their structures need optimizing to improve their erosion and mechanical properties. We have prepared copolymer of 2-methylene-1,3-dioxepane (MDO), tributylsilyl methacrylate (TBSM) and methyl methacrylate (MMA) via radical ring-opening copolymerization. Such polymer has a degradable backbone and hydrolyzable side groups. Our study demonstrates that as the ester units in the backbone increase, the degradation rate increases but the swelling decreases in seawater. The degradation is controlled by the polymer composition or the molar ratio of the ester units in the backbone to the silyl ester side groups. Moreover, such polymer can serve as a carrier and controlled release system for organic antifoulants. Marine field tests show that the system consisting of the copolymer and organic antifoulant has good antifouling performance depending on the polymer composition. It can effectively inhibit the colonization and growth of marine organisms when MDO content is above 20 wt %

Understanding the Formation of Pentagonal Cyclic Twinned Crystal from the Solvent Dependent Assembly of Au Nanocrystals into Their Colloidal Crystals

Due to the presence of high-density twinned-defects and diffuse elastic strain, pentagonal cyclic twinning (PCT) structures may have more fascinating properties than the corresponding single crystalline structure. Although there are a lot of reports concerning the PCT nanocrystals of many monometals and bimetal alloys, the established growth mechanisms of PCT structures are still not straightforward and usually inconsistent with each other. In this Letter, using dodecanethiol-capped Au nanocrystals (NCs) as building blocks, taking self-assembly of Au NCs into their colloidal crystals as the crystallization model, we found the competition of crystal cohesive energy and surface free energy plays an important role in the formation of PCT colloidal crystal. By rationally selecting the solvent to tailor the crystal cohesive energy, the structure of the colloidal crystals can be tuned. PCT structures are more likely to form when the interaction between building blocks is weak, while the single crystal structure is formed when the interaction is strong. The results demonstrate that the thermodynamic factors are the origin of pentagonal cyclic twinning

Facile Synthesis of Molecularly Imprinted Graphene Quantum Dots for the Determination of Dopamine with Affinity-Adjustable

A facilely prepared fluorescence sensor was developed for dopamine (DA) determination based on polyindole/graphene quantum dots molecularly imprinted polymers (PIn/GQDs@MIPs). The proposed sensor exhibits a high sensitivity with a linear range of 5 × 10^–10 to 1.2 × 10^–6 M and the limit of detection as low as 1 × 10^–10 M in the determination of DA, which is probably due to the tailor-made imprinted cavities for binding DA thought hydrogen bonds between amine groups of DA and oxygen-containing groups of the novel composite. Furthermore, the prepared sensor can rebind DA in dual-type: a low affinity type (noncovalent interaction is off) and a high affinity type (noncovalent interaction is on), and the rebinding interaction can be adjusted by tuning the pH, which shows a unique potential for adjusting the binding interaction while keeping the specificity, allowing for wider applications

Range of LCs of PW in the included studies.

<p>Range of LCs of PW in the included studies.</p

LC in healthy PW and HRT users in the included studies.

*<p>N: no difference.</p