Nanoarchitectonics of bipyrazole-based porous organic polymer for iodine absorption and fluorescence sensing picric acid and formation of liquid complex of its (poly)iodide ions

被引:7
作者
Geng, Tong-Mou [1 ]
Wang, Kang [1 ]
Zhou, Xue-Hua [1 ]
Dong, Xiao-Qing [1 ]
机构
[1] Anqing Normal Univ, Sch Chem & Chem Engn, AnHui Prov Key Lab Optoelect & Magnetism Funct Ma, Anqing 246011, Peoples R China
关键词
Liquid complex; Bipyrazole; Iodine capture; Fluorescence sensing; Porous organic polymers; CONJUGATED MICROPOROUS POLYMERS; REVERSIBLE STORAGE; VOLATILE IODINE; CAPTURE; EFFICIENT; FRAMEWORKS; METHANE;
D O I
10.1016/j.jssc.2022.123080
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A new bipyrazole-based porous organic polymer, TMBPH, was constructed by a nucleophilic substitution polymerization reaction with pi-electron-rich 3,3 ',5,5 '-tetramethyl-4,4 '-bipyrazol (TMBP) and hexachlorocyclotriphosphazene (HCCP). Its Brunauer-Emmett-Teller (BET) and Langmuir surface area are 68.97 and 160.69 m(2) g(-1), respectively, and its pore volume is 0.0851 cm(3) g(-1). TMBPH has a good thermal stability and displays excellent guest uptake of 5.86 g g(-1) in iodine vapor. Interestingly, TMBPH presents a liquid polyiodide complex because of its high iodine adsorption capacity and low pore volume. TMBPH can also adsorb iodine in the solution, and the absorbed iodine can be released at higher temperatures or in the solution. TMBPH as an adsorbent is recovered and reused easily. Furthermore, fluorescent study indicated that TMBPH exhibits high sensitivity to electron-deficient picric acid (PA) via fluorescence quenching. Thus TMBPH can become an ideal absorbent for I2 and fluorescent sensing material for PA to address environmental issues.
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页数:8
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