In 2017,Ikai, Tomoyuki; Suzuki, Daisuke; Shinohara, Ken-ichi; Maeda, Katsuhiro; Kanoh, Shigeyoshi published 《A cellulose-based chiral fluorescent sensor for aromatic nitro compounds with central, axial and planar chirality》.Polymer Chemistry published the findings.Category: iodides-buliding-blocks The information in the text is summarized as follows:
Chiral sensing using fluorescent responses as output signals is an attractive technique for enantiodifferentiation in terms of its rapidity, high sensitivity, simplicity and high-throughput ability. However, because the reported sensors can only be applied to a limited type of chiral mol. (mainly compounds with a chiral center), it is still a great challenge to develop a powerful fluorescent sensor applicable to various types of chirality. Herein, we synthesized a novel chiral fluorescent sensor (Ce-3) containing a benzo[1,2-b:4,5-b]dithiophene-based π-conjugated group as a fluorescent signaling unit through a two-step polymer reaction, including carbamoylation and cross-coupling reactions, using microcrystalline cellulose as a starting material. The enantioselective fluorescence response of this modified cellulose to aromatic nitro compounds was investigated in solution and in the solid state. Ce-3 exhibited enantioselective fluorescence quenching for a wide range of aromatic nitro compounds with central, axial and planar chirality. Visual chiral detection based on a change of the visible emission color was also achieved with Ce-3 in conjunction with anthracene as an achiral fluorescent dye. A corresponding model mol. did not show any marked sensing ability, suggesting that the regular higher-order structure of Ce-3 plays a key role in this efficient chiral sensing. The results came from multiple reactions, including the reaction of 1,2-Diiodoethane(cas: 624-73-7Category: iodides-buliding-blocks)
1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Organic iodides are used in veterinary products (Organic Iodide Powder) as a nutritional source of iodine. In the chemical industry, alkyl iodides serve as excellent alkylating agents and, specifically, methyl iodide is used as a methylating agent in the synthesis of various pharmaceutical drugs. Oceanic alkyl iodides are believed to be the principal source of atmospheric iodine.Category: iodides-buliding-blocks
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com