TY - DATA T1 - Synthesis and characterization of new calixarene-chitosan polymers PY - 2017/08/11 AU - Yuning Liu AU - Zhimei Zhong UR - https://tandf.figshare.com/articles/journal_contribution/Synthesis_and_characterization_of_new_calixarene-chitosan_polymers/5303383 DO - 10.6084/m9.figshare.5303383 L4 - https://tandf.figshare.com/ndownloader/files/9083041 KW - Calix[n]arene KW - Chitosan KW - Buchwald-Hartwig KW - Triflate Ester KW - Polymer N2 - Triflate Ester of Calix[n]arene (n = 4, 6, 8) (TEC[n] (n = 4, 6, 8)) were synthesized based on a new synthetic route, then TEC[n] (n = 4, 6, 8) were further modified by reacting with low molecular weight Chitosan (CS) to get three kinds of new Calix[n]arene-Chitosan polymers (n = 4, 6, 8) (C[n]CSP (n = 4, 6, 8)) through Buchwald-Hartwig cross coupling reaction. The structures of the polymers were characterized by FT-IR, SEM, Elemental analyzer and 13C SSNMR. And the results found that Chitosan was successfully introduced to Calix[n]arene (n = 4, 6, 8) (C[n] (n = 4, 6, 8)) without any long-chain alkyl between Chitosan and Calixarene. These new polymers are partially substituted calixarene. The substitute degree of C[4]CSP, C[6]CSP and C[8]CSP is 17.75%, 21.08% and 54.53% respectively. And the optimal preparation conditions were discussed and the results were listed as following, molar ratio (1:2), catalyst (0.05 mmol), solvent ratio (1:1.5 (10 mL•1.0 mmol−1)) and reaction time (5h). ER -