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The first example of triphenylene-modified chitosan 4 was prepared by reacting chitosan with triphenylene aldehyde derivative 3. Its structure and morphology was characterized by elemental analysis, 1H NMR, FTIR, XRD, SEM and AFM image. The triphenylene units in Tp-chitosan 4 appended on the skeleton of chitosan and possessed orderly layered structure. Adsorption experiments of Tp-chitosan 4 indicated...
Two novel symmetrical triads of triphenylene-calix[4]arene-triphenylene bridged by aromatic amido or hydrazone spacers were synthesized with stepwise procedures in yields of 67% and 68%, respectively. They exhibited interesting mesomorphic behavior of triphenylene column with calix[4]arene units on ancillary lateral sides.
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