Details

Autor(en) / Beteiligte

• Zhang, Haichang
• Yang, Kun
• Chen, Chao
• Wang, Yanhui
• Zhang, Zhenzhen
• Tang, Liangliang
• Sun, Qikun
• Xue, Shanfeng
• Yang, Wenjun

Titel

1,4-Diketo-pyrrolo[3,4-c]pyrroles (DPPs) based insoluble polymer films with lactam hydrogens as renewable fluoride anion chemosensor

Ist Teil von

• Polymer (Guilford), 2018-08, Vol.149, p.266-272

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Manipulating the sub-units of conjugated co-polymers was a convenient and promising strategy for developing novel functional materials. Here a soluble alternating copolymer (P-Boc) consisted of 9,9-dialkylfluorene and 1,4-diketo-2,5-di(t-butoxycarbonyl)-3,6-diphenyl-pyrrolo[3,4-c]-pyrrole was designed and synthesized. Heating the spin-coated P-Boc film could afford an insoluble polymer film (P-2H) with multiple lactam hydrogen units by the removal of the t-butoxycarbonyl groups. Unlike the small molecules with lactam hydrogen, the P-2H film was insoluble and exhibited the remarkable naked-eye visible color change and a new long-wavelength absorption band in the fluoride anion-containing organic solution. The naked-eye visible and spectroscopic detection limits for fluoride anion were ∼10−6 and ∼10−8 M, respectively. Moreover, the fluoride anions bonded with P-2H film could be easily removed by immersing in acidic solutions, and the resulting P-2H film could again probe fluoride anion. Energy dispersive X-ray spectroscopy analysis indicated that most lactam units in P-2H film could bond fluoride anions and the bonded fluoride anions could be removed quantitatively. These results demonstrated that P-2H was not only an efficient and renewable fluoride anion chemosensor but also might become a promising fluoride anion extractor. Preparation, characterization, and application of DPP-based insoluble polymer film with lactam hydrogens through thermal annealing its solution-processed precursor polymer film for fluoride anion sensors; the fluoride anion detection limitation as low as 10−8 M. [Display omitted] •DPP-based insoluble polymer film (P-2H) with lactam hydrogens was prepared upon heating t-Boc functionalized P-Boc film.•P-2H film exhibited remarkable naked-eye visible color change in the fluoride anion-containing organic solution.•The spectroscopic detection limits of P-2H film for fluoride anion were 10−8 M.•The sensing ability of P-2H for fluoride anion can be recovered, making it promising fluoride anion sensor and extractor.