SEMI-FLUORINATED BLOCK COPOLYMERS FOR DELIVERY OF THERAPEUTIC AGENTS
申请人:Mecozzi Sandro
公开号:US20080194500A1
公开(公告)日:2008-08-14
The present invention provides semi-fluorinated block copolymers and related methods of synthesizing and using semi-fluorinated block copolymers for drug delivery and drug formulation applications. Semi-fluorinated block copolymers of this aspect of the invention include block copolymers having discrete hydrophilic, fluorophilic and hydrophobic structural domains that are capable of forming supramolecular structures in aqueous solutions, such as micelles, for encapsulating hydrophobic and/or fluorophilic therapeutic agents. Encapsulation by semi-fluorinated block copolymers of the present invention allows for enhanced solubilization and stabilization of hydrophobic and/or fluorophilic therapeutic agents relative to conventional drug delivery compositions and methods.
Semi-fluorinated block copolymers for delivery of therapeutic agents
申请人:Mecozzi Sandro
公开号:US08900562B2
公开(公告)日:2014-12-02
The present invention provides semi-fluorinated block copolymers and related methods of synthesizing and using semi-fluorinated block copolymers for drug delivery and drug formulation applications. Semi-fluorinated block copolymers of this aspect of the invention include block copolymers having discrete hydrophilic, fluorophilic and hydrophobic structural domains that are capable of forming supramolecular structures in aqueous solutions, such as micelles, for encapsulating hydrophobic and/or fluorophilic therapeutic agents. Encapsulation by semi-fluorinated block copolymers of the present invention allows for enhanced solubilization and stabilization of hydrophobic and/or fluorophilic therapeutic agents relative to conventional drug delivery compositions and methods.
An iron(II) complex of a novel tripodal 2,2´-bipyridine ligand bearing perfluoroalkyl linkers showed anion-dependent fac/mer isomerization. In the complexes with bromide and triflate anions, the mer isomer was preferentially formed. The bistriflimide anion shifted the equilibrium to the fac isomer. The different isomerization behaviors were probably caused by difference in the hydrogen bond modes of
带有全氟烷基接头的新型三足 2,2´-联吡啶配体的铁 (II) 配合物显示出阴离子依赖性fac / mer异构化。在与溴化物和三氟甲磺酸盐阴离子的配合物中,优先形成mer异构体。bistrilimide 阴离子将平衡转移到fac异构体。不同的异构化行为可能是由于异构体与阴离子的氢键模式不同造成的。
Synthesis and self-assembly properties of a novel [poly(ethylene glycol)]–fluorocarbon–phospholipid triblock copolymer
作者:Jennifer N. Slaughter、Karen M. Schmidt、Julee L. Byram、Sandro Mecozzi
DOI:10.1016/j.tetlet.2007.03.148
日期:2007.5
The synthesis of a novel poly(ethylene glycol)-fluorocarbon-phospholipid conjugate that self-assembles into hyper-stable micelles characterized by an internal fluorous phase is described. Physical characterization of the micelles formed by this polymer in aqueous solution is included. Dynamic light scattering (DLS) measurements indicate a mean diameter of 15 nm ( 3 nm), while pyrene fluorescence studies show a critical micelle concentration (CMC) of only 0.65 mu M. (C) 2007 Elsevier Ltd. All rights reserved.
Multicompartment Theranostic Nanoemulsions Stabilized by a Triphilic Semifluorinated Block Copolymer
作者:Alexa R. Barres、Megan R. Wimmer、Sandro Mecozzi
DOI:10.1021/acs.molpharmaceut.7b00624
日期:2017.11.6
The presence of a perfluorocarbon block in a multiblock polymer has been shown to be an additional driving force toward nanoparticle assembly. In the preparation of nanoemulsions, this perfluorocarbon block also provides enhanced particle stability. Herein, the synthesis of a new triphilic, semifluorinated copolymer, M2F8H18, is introduced. This ABC type block copolymer can be used to formulate extremely stable nanoemulsions, assembled around a lipophilic droplet, with lifetimes of one year or more. The central oil droplet can stably solubilize high concentrations of hydrophobic drugs, making this system an ideal drug delivery vehicle. The incorporation of the perfluorocarbon block modulates drug release from the lipophilic core via the surrounding fluorous shell. Fluorous imaging agents incorporated into the fluorous shell prolong drug release even further as well as provide potent F-19-MRI contrast ability. In vitro studies show that these nanoemulsions efficiently inhibit cancer cell growth, thus providing a theranostic drug delivery system.