Porous organic polymer nanotubes as luminescent probe for highly selective and sensitive detection of Fe3+

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2017,（8）
• 页码范围: 1090-1097
• 页数: 8页
• 语种: 英文
• DOI: 10.1007/s11426-017-9026-x

摘要

Two porous organic polymer nanotubes (PNT-2 and PNT-3) were synthesized via Ni-catalyzed Yamamoto reaction,using 2,4,6-tris-(4-bromo-phenyl)-[1,3,5]-triazine (TBT) as one monomer,and 2,7-dibromopyrene (DBP) or 1,3,6,8-tetrabromopyrene (TBP) as another monomer.The scanning electron microscope (SEM) images show that both PNT-2 and PNT-3 possess clear hollow tube structures.Luminescent measurements indicate that both PNT-2 and PNT-3 can serve as luminescent probe for highly selective and sensitive detection of Fe3+ by luminescent quenching effect.Absorption competition quenching (ACQ) mechanism is also proposed to explain luminescent quenching behavior,i.e.,the overlap of the UV-spectra between Fe3+ and PNTs causes the energy competition,and therefore leads to luminescent quenching.Moreover,both PNT-2 and PNT-3 still show high selectivity and sensitivity for sensing Fe3+ in 10％ ethanol aqueous solution,which means that the two porous PNTs are promising candidates as luminescent probes for detecting Fe3+ in practical applications.