Aggregation-Induced Emissive Copper(I) Complexes for Living Cell Imaging
| Autor: | Xiu-Ling Li, Xue-Lian Xin, Fuyou Li, Yu-Bo Ai, Min Chen, Feng-lei Yang |
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| Rok vydání: | 2014 |
| Předmět: |
Models
Molecular Spectrometry Mass Electrospray Ionization Magnetic Resonance Spectroscopy Spectrophotometry Infrared Stereochemistry chemistry.chemical_element Crystal structure Nuclear magnetic resonance spectroscopy Copper Inorganic Chemistry Hexane Crystallography chemistry.chemical_compound chemistry Intramolecular force Atom Humans Chelation Physical and Theoretical Chemistry Phosphorescence HeLa Cells |
| Zdroj: | Inorganic Chemistry. 53:2922-2931 |
| ISSN: | 1520-510X 0020-1669 |
| Popis: | Phosphorescent binuclear copper(I) complexes [Cu2(BrphenBr)2(Ph2P(CH2)nPPh2)2](ClO4)2 with different conformations are obtained by reaction of [Cu(NCCH3)4]ClO4, 3,8-dibromo-1,10-phenanthroline (BrphenBr), and corresponding diphosphine ligands, where n = 1, 4, 5, and 6 in complexes Cu-1, Cu-2, Cu-3, and Cu-4, respectively. Complex Cu-4 exhibits both the eclipsed and the staggered conformations of 18-membered Cu2C12P4 metallacycles in a 1:1 ratio in the crystal structure. All complexes are very stable to air and moisture in the solid state because of the high level of protection of all the Cu(I) centers, N and P atom centers resulting from the close contact of BrphenBr and diphosphine ligands, and what is more important is that there exist very soft P donors and the chelating effect of aromatic N atoms. The ESI-MS result through changing the collision cell energy from 0 to 20 eV suggests that the corresponding [Cu2(Ph2P(CH2)nPPh2)2](2+) cations are the thermodynamically stable species, while [Cu2(BrphenBr)2(Ph2P(CH2)nPPh2)2](ClO4)2 are stable products in crystallization kinetics in solutions. All complexes Cu-1-Cu-4 display good aggregation-induced phosphorescence emission (AIPE) behavior in CH2Cl2/hexane mixed solvents, which are suggested to arise from restriction of intramolecular rotation. Aggregation-induced emission (AIE) of complexes Cu-1-Cu-4 in PBS/DMSO (99:1, v:v) is used for living HeLa cell imaging successfully with green intracellular emission image. |
| Databáze: | OpenAIRE |
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