Morphology controllable fabrication of poly-o-phenylenediamine microstructures tuned by the ionic strength and their applications in pH sensors

被引：27
作者：
Jiang, Kunpeng [1 ]
Ma, Shenghua [1 ]
Bi, Hongmei [1 ]
Chen, Dafa [1 ]
Han, Xiaojun [1 ]
机构：
[1] Harbin Inst Technol, Sch Chem Engn & Technol, State Key Lab Urban Water Resource & Environm, Harbin 150001, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 45期
基金：
中国国家自然科学基金;
关键词：
ONE-DIMENSIONAL STRUCTURES; FLUORESCENT-PROBE; FACILE SYNTHESIS; FERRIC-CHLORIDE; ACIDIC-SOLUTION; HOLLOW SPHERES; AQUEOUS-MEDIUM; GAS SENSORS; NANOBELTS; ROUTE;
D O I：
10.1039/c4ta04269g
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report a one-recipe-various-structure method to prepare poly(o-phenylenediamine) (PoPD) microstructures. The assembly units, i.e., PoPD oligomers, were formed in the presence of a low redox potential oxidant of CuCl2. The further assembly process of the oligomers was triggered by the introduction of concentrated NaCl solution. The belts, bow-tie-shaped microstructures and clusters of PoPD were fabricated in a controlled manner by varying the concentration of NaCl and oPD. The introduction of NaCl is believed to influence the hydrogen bonding behaviour of PoPD oligomers. The morphology and optical properties were influenced by acidic or basic treatment. Interestingly, the belts after treating with NaOH produce strong fluorescence emission. A pH sensor based on this property was developed.
引用
收藏
页码：19208 / 19213
页数：6
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