Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29247
Title: Nonlinear optical activity in dipolar organic-lanthanide complexes
Authors: Law, GL
Wong, KL
Lau, KK
Lap, ST
Tanner, PA
Kuo, F
Wong, WT 
Keywords: Cancer
Contrast agents
Gadolinium complexes
Liver
Magnetic resonance angiography
Magnetic resonance imaging
Safety
Issue Date: 2010
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry, 2010, v. 20, no. 20, p. 4074-4079 How to cite?
Journal: Journal of materials chemistry 
Abstract: A series of fifteen dipolar polymeric lanthanide complexes of trans-cinnamic acid, [Ln(C9H7O2) 3]n, which crystallize in the non-centrosymmetric space groups R3c and P21, have been synthesized and the crystal structures of 14 of these have been determined. From the crystallographic data, two different coordination scenarios for these complexes have been found: Type I, CN = 9, Ln = La, Ce, Nd, Sm, Eu, Gd and Tb, and Type II, CN = 7, Ln = Y, Dy, Ho, Er, Tm, Yb and Lu. The linear and nonlinear photophysical properties of these complexes have been studied using various laser excitation wavelengths. The low temperature photoluminescence spectrum shows a distortion from the C3 site symmetry of the Eu3+ complex. Strong second harmonic generation (SHG) has been observed for both Types I and II in the solid state. The normalized SHG intensities of the members of the entire series of lanthanide complexes have been compared and the solution state hyperpolarizabilities have also been measured for the study of the effects of 4f-electrons on nonlinear photophysical properties. These SHG parameters show maximum values near the center of the lanthanide series, as opposed to previously reported fairly linear or independent variations.
URI: http://hdl.handle.net/10397/29247
ISSN: 0959-9428
EISSN: 1364-5501
DOI: 10.1039/b926376d
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

26
Last Week
0
Last month
0
Citations as of Oct 7, 2017

WEB OF SCIENCETM
Citations

26
Last Week
0
Last month
0
Citations as of Oct 16, 2017

Page view(s)

52
Last Week
2
Last month
Checked on Oct 16, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.