Novel Water-Soluble Cyclodextrin-Based Conjugated Polymer for Selective Host–Guest Interactions of Cationic Surfactant CTAB and Reverse FRET with Rhodamine B Tagged Adamantyl Guest
作者:Atul Kumar Dwivedi、Ravinder Singh、Ashutosh Singh、Kung-Hwa Wei、Chu-Ya Wu、Ping-Chiang Lyu、Hong-Cheu Lin
DOI:10.1021/acs.macromol.6b00789
日期:2016.8.9
(RhB) tagged adamantyl guest was transformed into ADRhB(O), i.e., the open form of ADRhB, to generate RhB emission in the presence of Fe3+ ion selectively for the pendent host β-CD of P1, and the further interaction of ADRhB(O)/Fe3+ with P1 prevailed a completely quenched RhB emission via the inclusion complexation of adamantyl terminal of ADRhB(O) in β-CD. Moreover, stronger interactions of CTAB with
设计并合成了一种新型的带有β-环糊精(β-CD)侧链的水溶性π共轭主链聚合物P1。P1的聚集和分解分别产生淡黄绿色和亮黄色排放。的包合配合能力P1通过与β-CD挂件阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)和客人的缔合相互作用P1为Fe 3+通过三唑间隔物导致的显著增强和减弱完全发射分布P1分别在纯净水中。有趣的是,作为另一种若丹明B(RhB)标记的金刚烷宾的ADRhB被转化为ADRhB(O)(即ADRhB的开放形式),从而在有Fe 3+离子存在的情况下选择性地为垂体宿主β-CD产生RhB发射。P1和ADRhB(O)/ Fe 3+与P1的进一步相互作用通过ADRhB(O)的金刚烷基末端在β-CD中的包合络合而使RhB的发射完全淬灭。而且,即使在受体P1存在的情况下,CTAB与β-CD的更强相互作用也进一步产生了ADRhB(O)的RhB发射。最后,一种新型的β-CD水溶性P1CTAB对