» Articles » PMID: 25246874

Silver(I)-directed Growth of Metal-organic Complex Nanocrystals with Bidentate Ligands of Hydroquinine Anthraquinone-1,4-diyl Diethers As Linkers at the Water-chloroform Interface

Overview
Publisher Springer
Specialty Biotechnology
Date 2014 Sep 24
PMID 25246874
Authors
Affiliations
Soon will be listed here.
Abstract

Immiscible liquid-liquid interfaces provide unique double phase regions for the design and construction of nanoscale materials. Here, we reported Ag(I)-directed growth of metal-organic complex nanocrystals by using AgNO3 as a connector in the aqueous solution and bidentate ligand of 1,4-bis(9-O-dihydroquininyl)anthraquinone [(DHQ)2AQN] and its enantiomer of (DHQD)2AQN in the chloroform solutions as linkers. The Ag-(DHQ)2AQN and Ag-(DHQD)2AQN complex nanocrystals were formed at the liquid-liquid interfaces and characterized by using UV-vis absorption and fluorescence spectroscopy and X-ray photoelectron spectroscopy, as well as by using scanning electron microscopy. Screw-like nanocrystals were formed at the initial 30 min after the interfacial coordination reaction started, then they grew into nanorods after several days, and finally became cubic microcrystals after 2 weeks. The pure ligand showed two emission bands centered at about 363 and 522 nm in the methanol solution, the second one of which was quenched and shifted to about 470 nm in the Ag-complex nanocrystals. Two couples of reversible redox waves were recorded for the Ag-complex nanocrystals; one centered at about -0.25 V (vs. Ag/AgCl) was designated to one electron transfer process of Ag - (DHQ)2AQN and Ag - (DHQ)2AQN(+), and the other one centered at about 0.2 V was designated to one electron transfer process of Ag - (DHQ)2AQN and Ag(+) - (DHQ)2AQN.

References
1.
Tang Y, Chen M, Qian D, Zhang L, Liu M . Interfacial self-assembly and characterization of chiral coordination polymer multilayers with bidentate ligands of hydroquinine anthraquinone-1,4-diyl diether as linkers. Langmuir. 2013; 29(21):6308-16. DOI: 10.1021/la400429w. View

2.
Biswas S, Drzal L . A novel approach to create a highly ordered monolayer film of graphene nanosheets at the liquid-liquid interface. Nano Lett. 2008; 9(1):167-72. DOI: 10.1021/nl802724f. View

3.
Su B, Abid J, Fermin D, Girault H, Hoffmannova H, Krtil P . Reversible voltage-induced assembly of au nanoparticles at liquid/liquid interfaces. J Am Chem Soc. 2004; 126(3):915-9. DOI: 10.1021/ja0386187. View

4.
Zhang S, Liu J, Zhang C, Yu S . Co-assembled thin films of Ag nanowires and functional nanoparticles at the liquid-liquid interface by shaking. Nanoscale. 2013; 5(10):4223-9. DOI: 10.1039/c3nr33856h. View

5.
Chen L, Ma H, Chen K, Cha H, Lee Y, Qian D . Synthesis and assembly of gold nanoparticle-doped polymer solid foam films at the liquid/liquid interface and their catalytic properties. J Colloid Interface Sci. 2011; 362(1):81-8. DOI: 10.1016/j.jcis.2011.06.037. View