Fluorescent nanoparticle solution, as well as preparation method and application thereof

Abstract

The invention provides a fluorescent nanoparticle solution. A building unit of the fluorescent nanoparticle uses sulfonato calix[4]arene derivative as the host and tetraphenylethylene quaternary ammonium salt as the guest. A supramolecular assembly is built through interactions of inclusion and complexation of the host-guest among the building units. The sulfonato calix[4]arene derivative is a single-bridged sulfonato calix[4]arene containing a sulfonato calix[4]arene unit or double-bridged sulfonato calix[4]arene containing two sulfonato calix[4]arene units. A preparation method provided by the invention is as follows: tetraphenylethylene quaternary ammonium salt is firstly prepared, and then tetraphenylethylene quaternary ammonium salt and sulfonato calix[4]arene derivative are dissolved into water and mixed uniformly to obtain the final product. The fluorescent nanoparticle solution provided by the invention has the advantages that: (1) the nanoparticle has the specific gathered fluorescence emission characteristic of tetraphenylethylene and the tetraphenylethylene derivatives; and (2) with the fluorescent nanoparticle, a high sensitive sensing to 2,4,6-trinitrophenol can be realized, which means that the fluorescent nanoparticle has a broad application prospects in the sensing technology field of explosive nitro compounds.

Description

【Technical field】 [0001] The invention belongs to the technical field of nano-supramolecular materials, in particular to a fluorescent nano-particle solution and a preparation method and application thereof. 【Background technique】 [0002] In recent years, the construction of functionalized nanoparticles has been one of the research hotspots of chemical and material scientists, see (1) M.Sastry, M.Rao, K.N.Ganesh.Acc.Chem.Res.2002,35,847–855 ;(2) H.Goesmann,C.Feldmann.Angew.Chem.Int.Ed.2010,49,1362–1395, among which fluorescent nanoparticles are unique due to their unique properties in fluorescence microscopy, immunolabeling and sensing More attention has been paid to performance, see (1) A.Palma, L.A.Alvarez, D.Scholz, D.O.Frimannsson, M.Grossi, S.J.Quinn, D.l F.O'Shea.J.Am.Chem.Soc.2011, 133 , 19618–19621; (2) X. Zhao, R. Tapec-Dytioco, W. Tan. J. Am. Chem. Soc. 2003, 125, 11474–11475. In the construction of these nanoparticles, most of them are purely inorganic nanopart...

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Problems solved by technology

[0003] Tetraphenylethylene and its derivatives, due to their aggregation-induced emission characteristics, exhibit strong fluorescence in the aggregated state, see (1) J.Liu, J.W.Y.Lam, B.Z.Tang.Chem.Rev.2009,109,5799-5867; (2) M.Wang, G.Zhang, D.Zhang, D.Zhu, B.Z.Tang.J.Mater.Chem.2010,20,1858–1867, received more and more attention, so they are used as fluorescent detectors Needles and organic electroluminescent materials are widely used in the fields of detection, sensing and preparation of organic electroluminescent devices, see (1) Y.Liu, C.Deng, L.Tang, A.Qin, R.Hu, J.Z. Sun, B.Z.Tang.J.Am.Chem.Soc.2011,133,660-663, but these reports are rarely involved in the study of its supramolecular assembly behavior and assembly

In these upper / lower edge modifications, the upper edge sulfonation of calixarene not only brings it good water solubility, but also improves its binding ability to organic guest molecules, see D.-S.Guo, K. Wang, Y.Liu.J.Inclusion Phenom. & Macrocyclic Chem.2008, 62, 1–21, thus greatly opened up the research on the assembly of calixarene, which includes the use of sulfonated calixarene to construct amphiphilic materials, see K.Wang, D.-S.Guo, Y.Liu.Chem.Eur, J.2010, 16, 8006-8011, also used bridged sulfonated calixarene to construct linear supramolecular polymers, see D.-S .Guo, Y.Liu.Chem.Soc.Rev.2012, in press, but so far there are few literature reports on sulfonated calixarene-induced aggregation of organic cations to form nanoparticles and accompanying supramolecules from non-fluorescence to fluorescence emission self-assembly behavior

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