✦ LIBER ✦

The symmetry of functionalized poly(propylene imine) dendrimers probed with hyper-Rayleigh scattering

✍ Scribed by E.J.H. Put; K. Clays; A. Persoons; H.A.M. Biemans; C.P.M. Luijkx; E.W. Meijer

Book ID: 103037200
Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 457 KB
Volume: 260
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00840-8

No coin nor oath required. For personal study only.

✦ Synopsis

Dendrimers are well-defined highly branched macromolecules that emanate from a central core and are synthesized through a stepwise, repetitive reaction sequence. In this study, different generations of a poly(propylene imine) dendrimer have been functionalized with second-order non-linear optical chromophores. The non-linear optical properties of these macromolecules have been investigated using the hyper-Rayleigh scattering technique. The sensitivity of this technique to molecular symmetry is exploited. The measurements show, in a unique way at the molecular level, that the dendrimers in solution form globular structures at generations with 32 and 64 4-dimethylaminophenylcarboxamide end-groups with restricted mobility of the end-groups.

📜 SIMILAR VOLUMES

Investigations on the toxicological prof

Investigations on the toxicological profile of functionalized fifth-generation poly(propylene imine) dendrimer

✍ Hrushikesh B. Agashe; Tathagata Dutta; Minakshi Garg; N. K. Jain 📂 Article 📅 2006 🏛 Pharmaceutical Press 🌐 English ⚖ 264 KB

The effect of the charge of astramol™pol

The effect of the charge of astramol™poly(propylene imine) dendrimers on interaction with polyanionic gels

✍ T. V. Panova; V. B. Rogacheva; S. B. Zezin; J. Joosten; J. Brackman; A. B. Zezin 📂 Article 📅 2006 🏛 SP MAIK Nauka/Interperiodica 🌐 English ⚖ 227 KB

A Molecular Dynamics Study of the First

A Molecular Dynamics Study of the First Five Generations of Poly(Propylene Imine) Dendrimers Modified with N-tBoc-L-Phenylalanine

✍ Luigi Cavallo; Franca Fraternali 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 214 KB 👁 1 views

A molecular dynamics study of poly(propylene imine)-based dendrimers, with end groups modified with tBoc-protected l-phenylalanyl amino acids, has been performed. Five generations of the dendrimer with 4, 8, 16, 32 and 64 amino acids were considered. The shape of the dendrimer was found to be genera