Quality of Life After Stereotactic Body Radiation Therapy for Primary and Metastatic Liver Tumors
- 作者：Alej ; ra Mé ; ndez Romero ; Wouter Wunderink ; Rob M. van Os ; Peter J.C.M. Nowak ; Ben J.M. Heijmen ; Joost J. Nuyttens ; Rene P. Br ; wijk ; Cornelis Verhoef ; Jan N.M. IJzermans ; Peter C. Levendag
- 关键词：Stereotactic ; Radiotherapy ; Liver ; Quality of life
- 刊名：International Journal of Radiation Oncology*Biology*Physics
- 出版年：2008
- 期刊代码：136_03603016
- 类别：med
- 出版时间：1 April 2008
- 卷：70
- 期：5
- 页码：1447-1452
- 文件大小：241 K
摘要
A new set of tripodal receptors based upon an aromatic platform have been synthesized in high yields. The compounds have been characterized by spectroscopic techniques and by single crystal X-ray crystallography. These receptors are found to have good extraction ability and high transport rate for Ag(I). The receptor with imine linkages exhibits weak fluorescence emission bands at λmax=413 and 540 nm, upon excitation at λmax=365 nm. The fluorescence spectrum of the receptor shows enhancement in the intensity of the signal at 413 nm on binding with the Ag+ cation. No such significant changes are observed with other metal ions. An absorption at 
365 nm is typical of an intraligand (π–π*) transition involving the imine chromophore, which produces a weak emission band at 413 nm due to quenching caused by PET from a neighboring –OH group. Participation of OH group in coordination to the metal ion reduces PET and an enhancement of fluorescence intensity is observed, signaling recognition of the metal ion.
365 nm is typical of an intraligand (π–π*) transition involving the imine chromophore, which produces a weak emission band at 413 nm due to quenching caused by PET from a neighboring –OH group. Participation of OH group in coordination to the metal ion reduces PET and an enhancement of fluorescence intensity is observed, signaling recognition of the metal ion.