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| Content Provider | Springer Nature Link |
|---|---|
| Author | Pandey, Shubha Kar, Jyotsna R. Azam, Amir Pandey, Siddharth Chawla, H. M. |
| Copyright Year | 2010 |
| Abstract | Long chain calix[4]arene ethers have been examined for aggregation in nonaqueous solvents by using UV-vis molecular absorbance spectroscopy. It has been observed that tetraalkylated (alkyl = hexadecyl and octadecyl, respectively) calix[4]arene ethers tend to aggregate in chloroform and tetrahydrofuran, possibly via π–π stacking interactions of the phenyl moieties, and the aggregation process appears to be facilitated by the alkyl chains. The analogous dialkylated compounds do not show any self-aggregation, plausibly due to strong hydrogen bonding between the –OH and the –O– of calix aryl ether which seems to disrupt the aggregation process. Addition of the anionic surfactant sodium dodecylsulfate (SDS) appears to hinder the aggregation process in nonpolar chloroform but the same surfactant facilitates aggregation in the polar tetrahydrofuran. The cationic surfactant (cetyltrimethyl ammonium bromide) and the nonionic surfactant (Brij-35) have no effect on this aggregation process. Unexpectedly, SDS induces aggregation of dialkylated calix[4]arene ethers in chloroform. It has been observed that the aggregated form of the tetraalkylated calix[4]arene ethers tend to increase the dimerization efficiency of cationic dyes (pinacyanol chloride and methylene blue) in chloroform. |
| Starting Page | 107 |
| Ending Page | 120 |
| Page Count | 14 |
| File Format | |
| ISSN | 00959782 |
| Journal | Journal of Solution Chemistry |
| Volume Number | 39 |
| Issue Number | 1 |
| e-ISSN | 15728927 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2010-01-05 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Condensed Matter Physics Inorganic Chemistry Oceanography Geochemistry Industrial Chemistry/Chemical Engineering Physical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Biochemistry Molecular Biology Biophysics Physical and Theoretical Chemistry |
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