期刊
ADVANCED MATERIALS
卷 30, 期 20, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201800177
关键词
conjugated polymers; pillararenes; sensing; supramolecular chemistry; two-photon fluorescence
类别
资金
- National Natural Science Foundation of China [51673084]
- Fundamental Research Funds for the Central Universities
- Jilin Province-University Cooperative Construction Project - Special Funds for New Materials [SXGJSF2017-3]
- JLU Cultivation Fund for the National Science Fund for Distinguished Young Scholars
A luminescent conjugated macrocycle polymer (CMP) with strong two-photon fluorescence property, namely, P[5]-TPE-CMP, is constructed from ditriflate-functionalized pillar[5] arene and a 1,1,2,2-tetrakis(4-ethynylphenyl) ethylene (TPE) linker through a Sonogashira-Hagihara cross-coupling reaction. Significantly, in sharp contrast with the corresponding conjugated microporous polymer without synthetic macrocycles, P[5]-TPE-CMP shows an outstanding stability against photobleaching and exhibits highly selective cation sensing capability toward Fe3+ at different excitation wavelengths (both UV and red-near-infrared regions). Meanwhile, its fluorescence could also be sufficiently quenched by 4-amino azobenzene, a frequently used organic dye that is certified to be carcinogenic, as compared with a group of common organic compounds. This work paves a new way for enhancing the properties of porous organic polymers through the introduction of supramolecular macrocycles like macrocyclic arenes.
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