Aggregation-induced emissive copper(I) complexes for living cell imaging.
Inorg Chem
; 53(6): 2922-31, 2014 Mar 17.
Article
en En
| MEDLINE
| ID: mdl-24559388
ABSTRACT
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 11 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 (991, vv) is used for living HeLa cell imaging successfully with green intracellular emission image.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Cobre
Límite:
Humans
Idioma:
En
Revista:
Inorg Chem
Año:
2014
Tipo del documento:
Article
País de afiliación:
China