Dendrimers consisting of stilbene or distyrylbenzene building blocks synthesis and stability
摘要:
On the basis of Wittig-Homer reactions and protection group techniques compound 7 for the core and the components 9a-c and 11a-c for the dendrons were prepared and linked in the final step. The convergent synthesis yielded constitutionally and configurationally pure dendrimers (2a-c, 2a'-c') which consist of distyrylbenzene units. Their thermo-oxidative stability in the presence of air was studied by chemiluminescence and compared to the dendrimers 1 consisting of stilbene units, (C) 1999 Elsevier Science Ltd. All rights reserved.
Dendrimers consisting of stilbene or distyrylbenzene building blocks synthesis and stability
摘要:
On the basis of Wittig-Homer reactions and protection group techniques compound 7 for the core and the components 9a-c and 11a-c for the dendrons were prepared and linked in the final step. The convergent synthesis yielded constitutionally and configurationally pure dendrimers (2a-c, 2a'-c') which consist of distyrylbenzene units. Their thermo-oxidative stability in the presence of air was studied by chemiluminescence and compared to the dendrimers 1 consisting of stilbene units, (C) 1999 Elsevier Science Ltd. All rights reserved.
Poly(propylene imine) dendrimers functionalized with stilbene or 1,4-distyrylbenzene chromophores
作者:Andrea Schulz、Herbert Meier
DOI:10.1016/j.tet.2007.08.064
日期:2007.11
Two generations of dendritic nanoparticles were prepared, which contain (E)-stilbene or (E, E)-1,4-distyrylbenzene chromophores in the 4 or 8 terminal positions of the propylene imine dendrons. The compounds show a highly efficient photoreactivity. On prolonged irradiation all stilbenoid chromophores were destroyed by oligomerization (crosslinking) and the typical absorption and fluorescence of the chromophores disappeared completely. (C) 2007 Elsevier Ltd. All rights reserved.
Dendrimers consisting of stilbene or distyrylbenzene building blocks synthesis and stability
On the basis of Wittig-Homer reactions and protection group techniques compound 7 for the core and the components 9a-c and 11a-c for the dendrons were prepared and linked in the final step. The convergent synthesis yielded constitutionally and configurationally pure dendrimers (2a-c, 2a'-c') which consist of distyrylbenzene units. Their thermo-oxidative stability in the presence of air was studied by chemiluminescence and compared to the dendrimers 1 consisting of stilbene units, (C) 1999 Elsevier Science Ltd. All rights reserved.