A typical 2D covalent organic polymer as multifunctional sensor and assemble a WLED

• Published in: Journal of solid state chemistry 2021-05, Vol.297, p.122101, Article 122101
• Main Authors: Zhang, Han, Ding, Guan-Yu, Yousaf, Afifa, Chen, Li, Wang, Xin-Long, Shan, Guo-Gang, Sun, Chun-Yi, Su, Zhong-Min
• Format: Article
• Language: English
• Subjects: And TNP probe; Covalent organic polymer; Fe3+ sensor; MnO4− Sensor; Multifunction; Ultrasensitive; White light emitting
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2021.122101

Luminescent sensors have received extensive attention due to their fast-response and easy-operation and when integrating multifunctions in a sensor, the cost will be reduced substantially. Covalent organic polymers (COPs) as multifunctional luminescent sensor with outstanding performance are still underexplored. In this work, a typical COP named as COP-2 show preponderant performance in the detection of Fe3+, MnO4−, and TNP. COP-2 has the highly efficient ability to selectively detect Fe3+ among the other metal ions, and the limit of the detection (LOD) is 0.89 ​μM, which outperforms the reported covalent organic materials. Anion sensing shows the COP-2 has the highly anti-interference ability and recyclicity to detect MnO4−. Explosive analogs sensing demonstrates that COP-2 owns the superior ability in sensing TNP in the knockdown concentration with 0.0067 ​ppm LOD, which superior to the values in the reported literature. In addition to the above superb sensing performance, COP-2 can be utilized as a white light-emitting diode (WLED) when combined with the commercial blue emission LED and presents a Commission Internationale de l’Eclairage (CIE) coordinate of (0.31, 0.32). These results show the COP-2 not only has an appealing performance in multifunctional luminescent sensing application, but also has a possible application in white light emitting. A typical COP was used to study its multifunctional luminescent applications. Take advantage of the high fluorescence and porosity, the COP was utilized to be a highly selective and sensitive probe for the detection of Fe3+, MnO4− ion and TNP. And the yellow emission phosphor was successfully used to assemble a WLED with blue commercial LED. [Display omitted] •The multifunctionality of the COP-2 was developed.•The excellent sensitive performance to detect Fe3+, MnO4− and TNP.•As a WLED with CIE coordinates (0.31, 0.32).