Enhanced quantum yield of dendrimer-entrapped gold nanodots by a specific ion-pair association and microwave irradiation for bioimaging.

Folic acid-modified diatrizoic acid-linked dendrimer-entrapped gold nanoparticles as nanoprobes for targeted CT imaging of human cervical cancer

Facile route to highly photoluminescent carbon nanodots for ion detection, pH sensors and bioimaging.

Carbon nanodots (CDs) of uniform size were prepared simply by the hydrothermal decomposition of folic acid (FA) precursor at various reaction temperatures. The CDs formed via dehydration of FA at 260 °C contributed the strongest photoluminescence (PL) signal and the highest quantum yield at about 68%, without assistance of any passivation agent. The effects of preparation conditions on PL behav...

APPLICATION OF MICROWAVE IRRADIATION TECHNIQUES FOR THE WITTING REACTION

The Wittig reaction rate can be dramatically enhanced by irradiation of the reaction mixture containing an aldehyde or ketone; methoxymethyl(triphenyl)phosphonium chloride, potassium t-butoxide, and t BuOH with a commercial microwave oven. Carbonyl compound are converted to Witting products within three min. in good yields.

Rsc_cc_c2cc35966a 1..3

With recent rapid developments in fluorescence spectroscopy and microscopy, fluorescent polymers have become more important than ever for various applications, including optical sensing, bioimaging, and optoelectronics. Much effort has thus been devoted to devise synthetic strategies for producing polymers with desirable fluorescent properties for specific applications. Traditional approaches t...

Co-reductive fabrication of carbon nanodots with high quantum yield for bioimaging of bacteria

A simple and straightforward synthetic approach for carbon nanodots (C-dots) is proposed. The strategy is based on a one-step hydrothermal chemical reduction with thiourea and urea, leading to high quantum yield C-dots. The obtained C-dots are well-dispersed with a uniform size and a graphite-like structure. A synergistic reduction mechanism was investigated using Fourier transform infrared spe...