Donghua University

About: Donghua University is a education organization based out in Shanghai, China. It is known for research contribution in the topics: Fiber & Nanofiber. The organization has 21155 authors who have published 21841 publications receiving 393091 citations. The organization is also known as: Dōnghuá Dàxué & China Textile University.

Direct Dehydroxytrifluoromethylthiolation of Alcohols Using Silver(I) Trifluoromethanethiolate and Tetra‐n‐butylammonium Iodide

Abstract: An unprecedented reaction for the direct trifluoromethylthiolation and fluorination of alkyl alcohols using AgSCF3 and nBu4NI has been developed. The trifluoromethylthiolated compounds and alkyl fluorides were selectively formed by changing the ratio of AgSCF3/nBu4NI. This protocol is tolerant of different functional groups and might be applicable to late-stage trifluoromethylthiolation of alcohols.

Facile immobilization of ag nanocluster on nanofibrous membrane for oil/water separation.

Abstract: Superhydrophobic and superoleophilic electrospun nanofibrous membranes exhibiting excellent oil/water separation performance were green fabricated by a facile route combining the amination of electrospun polyacrylonitrile (APAN) nanofibers and immobilization of a Ag nanocluster with an electroless plating technique, followed by n-hexadecyl mercaptan (RSH) surface modification. By introducing the hierarchically rough structures and low surface energy, the pristine superhydrophilic APAN nanofibrous membranes could be endowed with a superhydrophobicity with water contact angle of 171.1 ± 2.3°, a superoleophilicity with oil contact angle of 0° and a self-cleaning surface arising from the extremely low water contact angle hysteresis (3.0 ± 0.6°) and a low water-adhesion property. Surface morphology studies have indicated that the selective wettability of the resultant membranes could be manipulated by tuning the electroless plating time as well as the hierarchical structures. More importantly, the extremely hi...

Nano-effects, quantum-like properties in electrospun nanofibers

Abstract: Electrospun nanofiber technology bridges the gap between deterministic laws (Newton mechanics) and probabilistic laws (quantum mechanics). Our research reveals that fascinating phenomena arise when the diameter of the electrospun nanofibers is less than 100 nm. The nano-effect has been demonstrated for unusual strength, high surface energy, surface reactivity, high thermal and electric conductivity. Dragline silk is made of many nano-fibers with diameter of about 20 nm, thus it can make full use of nano-effects. It is a challenge to developing technologies capable of preparing for nanofibers within 100 nm. Vibration-melt-electrospinning is uniquely qualified to address this challenge. The flexibility and adaptation provided by the method have made the method a strong candidate for producing nanofibers on such a scale. The application of Sirofil technology to strengthen nanofibers is also addressed, E-infinity theory is emphasized as a challenging theory for nano-scale technology and science.