Interaction between Cucurbit[n]Urils (n=7 and 8) and 2-Amino-Phenyl-Thiazole
LIU Hua, XUE Sai-feng*, MOU Lan, TAO Zhu
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province and Applied Chemistry Institute, Guizhou University, Guiyang 550025, China
Abstract：The interaction between cucurbiturils(Q[7],Q[8]) and the 2-amino-benzothiazole (g) was investigated by 1H NMR spectroscopy, electronic absorption spectroscopy and fluorescence spectroscopy. The results show that with 2＜pH＜9, using different spectrum methods was able to observe the interaction between the cucurbit[n]urils and the guest at pH between 2 and 9, Q[7] interacts with the guest with a 1∶1 host∶guest ratio, and Q[8] interacts with the guest with a 1∶2 host∶guest ratio. Also, the inclusion constant and the thermodynamic parameters of the interaction systems, such as the entropy and enthalpy of systems, were considered.
[1] Day A I，Arnold A P. Chem. Abstr., 2000, 133: 362775. [2] Kim J，Jung I S，Kim S Y，et al. J. Am. Chem. Soc.，2000，122：540. [3] Day A I，Blanck R J，Arnold A P. Angew. Chem. Int. Ed.，2002，41：275. [4] ZENG Qi-hua，WANG Ya，ZHU Qian-jiang，et al(曾启华，王 娅，祝黔江，等). Aata Chimica Sinica(化学学报)，2006，64(10)：1085. [5] Buschmann H J，Cleve E，Jansen K，et al. J. Incl. Phenom. Macrocycl. Chem.，2001，40：117. [6] Kim H J，Heo J，Jeon W S，et al. Angew. Chem. Int. Ed.，2001，40(8)：1526. [7] Haouaj M E，Iahmer M，Ko Y H，et al. J. Chem. Soc. Perkin Trans., 2001, 5: 804. [8] Jun S I，Lee J W，Sakamoto S，et al. Tetrahedron Lett., 2000，41：471. [9] Jeon Y J，Kim S Y，Ko Y H，et al. Org. Biomol. Chem.，2005，3(3)：2122. [10] Marquez C，Nau W M. Angew. Chem. Int. Ed.，2001，40(17)：3155. [11] Ong W，Gomez-Kaifer M，Kaifer A E. Org. Lett., 2002，4(10)：1791. [12] SONG Yu-min，WU Jin-xiu(宋玉民，吴锦绣)，Chinese Journal of Inorganic Chemistry(无机化学学报)，2006，22(12)：2165.
