Barium-Selective Chromoionophoric Properties of Nitro Derivative of Calix[4]arene-crown Ethers.
β Scribed by Ju Hee Kim; Suk-Kyu Chang
- Publisher
- John Wiley and Sons
- Year
- 2003
- Weight
- 49 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0931-7597
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## Abstract The new chromophore compounds with NLO properties were prepared by Knoevenagel condensation from formyl or diformyl calix[4]arene and isophorone derivatives in the presence of piperidine and acetic acid, respectively. In these chromophore calix[4]arenes, the ring locked trienes were emp