Research Highlights

Metallatetrahedrane Intermediates in Alkyne Metathesis

Impact of Ligands and Metals on the Formation of Metallacyclic Intermediates

Alkyne metathesis typically operates through a metallacyclobutadiene intermediate. On the other hand, metalltetrahedranes are commonly considered as off-cycle byproducts that interfere with the reaction. The Lee group recently isolated a Mo(VI)-metallatetrahedrane that was catalytically active. Here, they investigate the factors that determine the formation of metallatetradedranes and how they affect the alkyne metathesis mechanism. [Funded by the National Science Foundation under grant 1956302]

Thompson et al.

Sodium Chloride induced shape deformations of polymersomes

NaCl induced shape deformations of polymersomes analyzed using SAN and X-ray scattering

NaCl induced shape deformations of polymersomes composed of amphiphilic triblock copolymers were analyzed using Small Angle Neutron and X-ray Scattering. Spherical polymersomes transform from spherical to multi-vesicular structures with increasing salt concentrations. While the membrane thickness shows an initial decrease and then a gradual increase, the inter-layer water thickness decreased until a constant value is reached. [DOE Open Access on 3/2022]

PERERA ET AL.

Self-assembly of peptoid polymers

N-Alkyl substituents phase applications into microflower and nanosheet structures

The intermolecular interactions amongst the peptoid polymers can be fine-tuned by controlling the N-substituent sidechain structures. In this study, branching pattern of peptoid polymer sidechains have been shown to effectively modulate the molecular shape of entire polymer chains and the collective assembly of polymers in solution to form two- or three-dimensional hierarchical structures. [Funded by the National Science Foundation under grant 1609447]

KANG, ET AL.

Past RESEARCH HIGHLIGHTS


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Ragains Receives NSF Grant 

Dr. Justin Ragains

Associate Professor Justin Ragains received a three-year NSF grant to study novel glycosylation reactions. 

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“How to Transform Unilamellar Phospholipid Vesicles to Multilamellar Systems”

Dr. Judith U. De Mel
Postdoctoral Research Associate in Biomedical Engineering
Interdisciplinary NanoBioSciences Laboratory
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