Hybrid Nanomaterials Containing Pamam, Polyrotaxane and Quantum Dot Blocks

Abstract

Pseudopolyrotaxanes, Ps-PR, consisting of α-cyclodextrin rings, polyethylene glycol axes and end triazine groups were prepared and then were capped by amino-functionalized quantum dots, NH 2 -QDs, to achieve polyrotaxanes. The amino-functionalized QDs stoppers of polyrotaxanes were used as core to synthesize polyamidoamine, PAMAM, dendrons divergently and hybrid nanomaterials were obtained. Synthesized hybrid nanomaterials were characterized by different spectroscopy, microscopy and thermal analysis methods. They were freely soluble in water and their aqueous solutions were stable at room temperature over several months. Due to their biocompatible backbone, high functionality and water solubility synthesized hybrid nanomaterials are promising carriers and probes in cancer diagnosis and therapy.

Linear-dendritic copolymers/indoxacarb supramolecular systems: biodegradable and efficient nano-pesticides

“…Linear-dendritic copolymers, as novel types of branched polymer structures, due to the highly branched segment with its multiple termini, their solubility and solution properties, are interesting candidates for encapsulation of guests and controlled release formulations. [9][10][11][12]…”

“…8 Amphiphilic linear-dendritic block copolymers possess properties that allow self-assembly into different shapes and have the capacity to form complex supramolecular architectures. [9][10][11][12] Applying new molecules or materials to the formulation of pesticides to produce nanopesticides that are biodegradable and safe for non-target organisms is an expanding research area. 13 Citric acid (CA) and poly(ethylene glycol) (PEG) are the components of the biocompatible poly(citric acid)-poly(ethylene glycol)-poly-(citric acid) (PCA-PEG-PCA) ABA type linear-dendritic block copolymers used in this study.…”