Hybrid fluorescent nanoparticles fabricated from pyridine-functionalized polyfluorene-based conjugated polymer as reversible pH probes over a broad range of acidity-alkalinity
文献类型：期刊论文
| 作者 | Cui, Haijun1,2; Chen, Ying1,2; Li, Lianshan2; Wu, Yishi3,4; Tang, Zhiyong2; Fu, Hongbing3,4; Tian, Zhiyuan1 |
| 刊名 | MICROCHIMICA ACTA
 |
| 出版日期 | 2014-10-01 |
| 卷号 | 181期号:13-14页码:1529-1539 |
| 关键词 | Conjugated Polymer Nanoparticles Fluorescence Ph Sensing Protonation |
| ISSN号 | 0026-3672 |
| DOI | 10.1007/s00604-014-1219-4 |
| 英文摘要 | Conjugated polymer nanoparticles (CPNs) were developed based on a polyfluorene-based conjugated polymer with thiophene units carrying pyridyl moieties incorporated in the backbone of polymer chains (PFPyT). Hybrid CPNs fabricated from PFPyT and an amphiphilic polymer (NP1) displayed pH-sensitive fluorescence emission features in the range from pH 4.8 to 13, which makes them an attractive nanomaterial for wide range optical sensing of pH values. The fluorescence of hybrid CPNs based on chemically close polyfluorene derivatives without pyridyl moieties (NP3), in contrast, remains virtually unperturbed by pH values in the same range. The fluorescence emission features of NP1 underwent fully reversible changes upon alternating acidification/basification of aqueous dispersions of the CPNs and also displayed excellent repeatability. The observed pH sensing properties of NP1 are attributed to protonation/deprotonation of the nitrogen atoms of the pyridine moieties. This, in turn, leads to the redistribution of electron density of pyridine moieties and their participation in the p-conjugation within the polymer main chains. The optically transparent amphiphilic polymers also exerted significant influence on the pH sensing features of the CPNs, likely by acting as proton sponge and/or acid chaperone. |
| 语种 | 英语 |
| WOS记录号 | WOS:000344001000007 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/50275]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Tian, Zhiyuan |
| 作者单位 | 1.Univ Chinese Acad Sci UCAS, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 2.Natl Ctr Nanosci & Technol, Lab Nanomat, Beijing 100190, Peoples R China 3.Chinese Acad Sci, State Key Lab Struct Chem Unstable & Stable Speci, BNLMS, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Haijun,Chen, Ying,Li, Lianshan,et al. Hybrid fluorescent nanoparticles fabricated from pyridine-functionalized polyfluorene-based conjugated polymer as reversible pH probes over a broad range of acidity-alkalinity[J]. MICROCHIMICA ACTA,2014,181(13-14):1529-1539. |
| APA | Cui, Haijun.,Chen, Ying.,Li, Lianshan.,Wu, Yishi.,Tang, Zhiyong.,...&Tian, Zhiyuan.(2014).Hybrid fluorescent nanoparticles fabricated from pyridine-functionalized polyfluorene-based conjugated polymer as reversible pH probes over a broad range of acidity-alkalinity.MICROCHIMICA ACTA,181(13-14),1529-1539. |
| MLA | Cui, Haijun,et al."Hybrid fluorescent nanoparticles fabricated from pyridine-functionalized polyfluorene-based conjugated polymer as reversible pH probes over a broad range of acidity-alkalinity".MICROCHIMICA ACTA 181.13-14(2014):1529-1539. |
入库方式： OAI收割
来源：化学研究所
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