Dominic V Mcgrath
Publications
Abstract:
Dendrimers capable of phototriggered disassembly were prepared up to the second-generation using an improved synthesis of 2,4-bis(hydroxymethyl)phenol based dendrimers. It was found that disassembly proceeds to 75-80% completion after 2 h of irradiation at 310 nm for all molecules studied. The lack of complete reaction is attributed to an inefficient photochemical deprotection process rather than the disassembly itself. © 2004 Elsevier Ltd. All rights reserved.
Abstract:
Bismaleimides are useful precursors for Diels-Alder reactions, Michael additions, and thiol-maleimide based conjugation for the synthesis of materials and polymers. Use of bismaleimide cross linkers for generating polymers, bioconjugate molecules, and useful imaging molecules is an active area of research. An efficient and practical synthetic protocol for N-alkyl bis-maleimide cross linkers starting from furan protected maleimide employing a reverse Diels-Alder reaction is reported. © 2013 Elsevier Ltd. All rights reserved.
Abstract:
Second generation dendrimer 2 with single azobenzene moieties attached to the periphery of each dendron is prepared by using protection-deprotection methodology. This modified convergent method using key intermediates methyl 3-benzyloxy-5-hydroxybenzoate (4) and methyl 3-allyloxy-5-hydroxybenzoate (8) is used widely in precise dendrimer synthesis. Preparation of higher generation of dendrimers with only one azobenzene moiety in the exterior of each dendron is ongoing. The complete comparison of physical properties between the two types of dendrimers 1 and 2 is investigated.