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(A) Synthesis, Characterization and Application of New Fluorinated Pyridine-Derivative Pincer Compounds as Water and Oil Repellent Agent (B) New Derivatives of Pincer Compound: Branched Fluorous Pincer Ligand

為了解決Palladium WATERPROOF的問題，作者Hening Asti Rahayu 這樣論述：

(a) Researchers have always seen fluorine as a critical topic in several fields. Currently, in our group, we synthesized three new fluorinated pyridine-derivative pincer compounds and they were fully characterized using FTIR, NMR, and GC-MS. These compounds include 2,6-bis(RfCH2OCH2Rf)pyridine, whi

ch Rf = C7F15, C8F17, and C9F19, which we prepared by using our previously reported procedure. Finally, these compounds were used in coating cotton fabrics in order to study their impact on water and oil repellent properties. The results showed that cotton fabrics coated with pin-19F exhibited the h

ighest water contact angle at 133.36° and then 127.29°, 112.66° as a water contact angle for cotton fabrics coated with pin 17F and pin 15F respectively. Besides as a water-repellent, these three compounds also provided good ability as an oil-repellent. The contact angle results of oil-repellent sho

wed at 91.55°, 85.87°, and 103.20° for cotton fabrics coated with pin-15F, pin-17F, and pin-19F respectively. A simple coating procedure was used to yield water-repellent and oil-repellent cotton fabrics. Even though only a simple coating procedure was used, it provided excellent stability on cotton

fabric. The resulting cotton-coated shows excellent washing fastness and excellent dry rub fastness. The washing fastness test showed that the coating was very stable, even after the 7th wash and the dry rub fastness showed the water contact angle decrease only by 6°. These results revealed that co

tton fabrics coated with these three compounds were hydrophobic with excellent stability and good oil-repellent behavior.(b) The branched fluorous chain alcohol 2,2-bis(perfluorohexyl)ethyl)-1-ethanol was prepared in 3 steps process from starting materials ethyl cyanoacetate and (perfluorohexyl)ethy

l iodide. This branched product will withdraw the concerns, regarding the environmental persistence of long-chain linear perfluorocarbons, which have rising health concerns due to their bioaccumulation. The addition of branches to the structure is necessary. These tags help to provide the full poten

tial of high fluorous content, without the use of long-chain linear perfluorocarbons. We had an ongoing interest in fluorous materials. However, branched tags are a promising approach to employ short fluorous segments, yet still obtain high wt% F. As a result, the yields from these reactions were co

mpetitively good compared to previously reported work with the value of 95%; (98% & 92%); 87% for the 1st, 2nd, and 3rd steps, respectively. The products from each step were fully characterized by using GC/MS, NMR, and FTIR. Additionally, the purity of the products was confirmed by NMR spectra and t

he FTIR spectrum was used to confirm the absence of cyano group (-CN) and the formation of the carboxylic group (-COOH) in the second step. Finally, in this work, we have synthesized 2,6-bis(RfCH2OCH2Rf)pyridine, where the Rf = (CH2CH2(CF2)5CF3)2 (branched pin-13F ligand) containing a branched fluor

ous chain. Which we prepared by using our previously reported procedure.