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Volume 4

Nano Research & Applications

ISSN: 2471-9838

Page 21


August 16-18, 2018 | Dublin, Ireland





Edition of International Conference on

Nanopharmaceutics and Advanced Drug Delivery



Nano Congress for Future Advancements

Nano Congress 2018


Nano Drug Delivery 2018

August 16-18, 2018

Synthesis, x-ray crystal structure, emission property, and DFT calculation of monoprotonated



series of metal-free compounds, i.e., bpyHPF6 (1), dmbpyHPF6 (2), phenHPF6 (3) dpphenPF6 (4), bqnHPF6 (5)

and ppyHPF6 (7) were newly prepared and characterized by electrospray ionization mass spectrometry, and UV-vis

spectroscopy. Abbreviations used are bpy=2,2’-bipyridine, dmbpy=4, 4’-dimethyl-2, 2’-bipyridine, phen=1,10-phenanthroline,

bqn = 2,2’-biquinoline and ppy = phenylpyrizine. The x-ray crystal structures of the four compounds 1, 2, 3, 4 5 and 7 were

determined. Monoprotonated pyridine rings are hydrogen bonded intramolecularly to the adjacent pyridine ring in compounds

1, 2, 3, 4 and 5. The π-π* absorption bands in the UV region for 1, 2, 3, 4 and 5 in acetonitrile were red-shifted relative to those

of the corresponding neutral unprotonated compounds. Density functional theory was applied to interpret the planarity in

1. The attachment of one proton to the one nitrogen in 5 leads to the remarkable emission (ϕ= 0.10). The attachment of one

proton to one nitrogen in 4 also gives the large quantum yield.


Naokazu Yoshikawa is a researcher from 2000. He have completed PhD in 2008 from Nara Women’s University and continued postdoctoral studies with Osaka University

and Nara educational University. He have published more than 25 papers in reputed journals. He have an interest in iridium complexes and Ruthenium complexes. Re-

cently he also interested in metal free emission product.

[email protected]

Naokazu Yoshikawa

Nara Women’s University, Japan

Naokazu Yoshikawa, Nano Res Appl 2018, Volume 4

DOI: 10.21767/2471-9838-C3-014