Accelerated Chemoselective Reactions to Sequence-Controlled Heterolayered Dendrimers
作者:Sandra García-Gallego、Oliver C. J. Andrén、Michael Malkoch
DOI:10.1021/jacs.9b11726
日期:2020.1.22
sequence-controlled heterolayered dendrimers. An accurate design of bis-MPA monomers with orthogonally complementary moieties and a wisely selected chemical toolbox generated highly complex monodisperse dendrimers through simplified protocols. The versatility of the strategy was proved by obtaining different dendritic families after altering the order of addition of the monomers. Moreover, we evaluated
A COMPOSITION COMPRISING THIOL, ALKENE AND PHOSPHONIC ACID CONTAINING COMPOUNDS FOR USE AS A PRIMER FOR ADHESION IMPROVEMENT
申请人:BIOMEDICAL BONDING AB
公开号:US20200054533A1
公开(公告)日:2020-02-20
The present invention relates to a primer composition that may be applied to tissue in order to increase bond strength between the tissue and a patch, filler or a supporting material. The primer comprises a dithiol component and an allyl containing component together with a photo initiator.
Fluoride-Promoted Esterification with Imidazolide-Activated Compounds: A Modular and Sustainable Approach to Dendrimers
作者:Sandra García-Gallego、Daniel Hult、Johan V. Olsson、Michael Malkoch
DOI:10.1002/anie.201411370
日期:2015.2.16
highly functional polyester dendrimers employing traditional and accelerated growth strategies. A sixth generation bis‐MPA dendrimer with a molecular weight of 22.080 Da and 192 peripheral hydroxy groups was isolated in less than one day of total reaction time. Large quantities of dendrimerswere obtained in high yields (>90 %) using simple purification steps under sustainable conditions. The fluoride‐promoted
[EN] LINKER COMPOUNDS, METHODS OF PRODUCING THE SAME AND USES THEREOF<br/>[FR] COMPOSÉS LIEURS, PROCÉDÉS DE PRODUCTION DE CEUX-CI ET UTILISATIONS CORRESPONDANTES
申请人:SHENKAR COLLEGE OF ENG AND DESIGN
公开号:WO2018173057A1
公开(公告)日:2018-09-27
The present disclosure provides a bifunctional linker for coupling at least one functional moiety, preferably a bis-allyl propionic acid (BAPA), to a polymer-containing matrix. Also disclosed by the present disclosure are anhydrides of the bifunctional linker, processes for preparing the bifunctional linker and such anhydride, as well as surfaces, such as cellulose containing matrices, coupled with the bifunctional linker, at times, the latter carrying a functional agent.
Soft hydrogels from tetra-functional PEGs using UV-induced thiol–ene coupling chemistry: a structure-to-property study
作者:Kristina Olofsson、Michael Malkoch、Anders Hult
DOI:10.1039/c4ra04335a
日期:——
In this work, photo-induced thiolâene coupling (TEC) was used to produce well-defined poly(ethylene glycol) (PEG)-based hydrogels. PEGs of four different molecular weights (2k, 6k, 10k, and 20k) were functionalized with G1-allyl dendrons using anhydride chemistry to produce tetra-functional TEC crosslinkable PEGs. The tetra-functional PEGs were subsequently crosslinked with a tri-functional thiol in ethanol to form hydrogels. The synthesized hydrogels were characterized with respect to swelling behaviour, rheological properties and hydrolytic degradation. It was found that the molecular weight of the PEG chain greatly influences the final properties of the hydrogel, where a higher molecular weight of PEG gives an increased weight swelling ratio from 240% for PEG-2k hydrogels to 1400% for PEG-20k hydrogels, as well as decreased elastic moduli, with Young's moduli ranging from 106 MPa to 6 MPa, for PEG-2k and PEG-20k hydrogels, respectively. It was also found that the hydrolytic stability in alkaline conditions (pH 10) decreased when the molecular weight of PEG in the hydrogels increased.