Lee Doo Hun, Ko Kyoung Chul, Ko Ju Hong, Kang Shin Young, Lee Sang Moon, Kim Hae Jin, Ko Yoon-Joo, Lee Jin Yong, Son Seung Uk
Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea.
Korea Basic Science Institute, Daejeon 34133, Korea.
ACS Macro Lett. 2018 Jun 19;7(6):651-655. doi: 10.1021/acsmacrolett.8b00263. Epub 2018 May 18.
Microporous organic polymer nanoparticles bearing tetraphenylethylene moieties (MOPTs) were prepared in the presence of poly(vinylpyrrolidone) (PVP). The PVP was entrapped into the microporous network of MOPT to form MOPT-P and played the roles of size control, porosity enhancement, and surface property management. MOPT materials without PVP showed superhydrophobicity with a water contact angle of 151°. In comparison, the MOPT-P showed excellent water compatibility. Moreover, due to the aggregation-induced emission property of tetraphenylethylene moieties, the MOPT-P showed emission and excellent emission-based sensing of nitrophenols in water with values in the range of 1.26 × 10 ∼ 3.37 × 10 M. It is noteworthy that the MOPT-P used water only as a sensing medium and did not require additional organic solvents to enhance water dispersibility of materials. The MOPT-P could be recovered and reused for the sensing at least five times.
在聚乙烯吡咯烷酮（PVP）存在的情况下制备了带有四苯乙烯部分的微孔有机聚合物纳米颗粒（MOPT）。PVP被截留在MOPT的微孔网络中形成MOPT-P，起到了尺寸控制、孔隙率增强和表面性质管理的作用。没有PVP的MOPT材料表现出超疏水性，水接触角为151°。相比之下，MOPT-P表现出优异的水相容性。此外，由于四苯乙烯部分的聚集诱导发光特性，MOPT-P在水中表现出发光以及对硝基苯酚的优异发光传感性能，检测值范围为1.26×10～3.37×10 M。值得注意的是，MOPT-P仅用水作为传感介质，不需要额外的有机溶剂来提高材料的水分散性。MOPT-P可以回收并重复用于传感至少五次。
