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Search Publications by: Vivek M. Prabhu (Fed)

Displaying 26 - 50 of 223

Interfacial tension in polyelectrolyte systems exhibiting associative liquid-liquid phase separation

February 3, 2021

Author(s)

Vivek Prabhu

A continued interest in polyelectrolyte phase diagrams guides the study of interfacial phenomena driven by polyelectrolyte complexation. The liquid-liquid interfaces formed by associative phase separation of oppositely charged synthetic and natural

Ultra-small angle neutron scattering to study droplet formation in polyelectrolyte complex coacervates

July 25, 2020

Author(s)

Vivek Prabhu, Yimin Mao, Markus Bleuel, Samim Ali, Yuanchi Ma

Associating soft matter such as surfactants, polymers, proteins, and liposomes, may form structures with dimensions not readily accessible by optical methods. Scattering methods can provide detailed information about the mechanism of associative phase

Development of Aqueous Size Exclusion Chromatography Conditions to Characterize Polyzwitterion-block-N-isopropyl acrylamide Copolymers

July 21, 2020

Author(s)

Phillip Pickett, Sara Orski, Vivek Prabhu

Block copolymers that exhibit both an upper critical solution temperature (UCST) and a lower critical solution temperature (LCST) are difficult to characterize due to inherent solubility difference between the two blocks. For example, accurate

The Effect of Solvent Quality on Pathway-Dependent Solution-State Self-Assembly of an Amphiphilic Diblock Copolymer

March 23, 2020

Author(s)

Vivek M. Prabhu, Kenneth Mineart, Guangmin Wei, James Hedrick, Yi Yan Yang, Shrinivas Venkataraman

The cholesterol-functionalized polycarbonate-based diblock copolymer, PEG113-b-P(MTC-Chol)30, forms pathway-dependent nanostructures via dialysis-based solvent exchange. The initial organic solvent that dissolves or disperses the polymer dictates a self

Characterization of the Ultralow Interfacial Tension in Liquid-Liquid Phase Separated Polyelectrolyte Complex Coacervates by the Deformed Drop Retraction Method

September 27, 2019

Author(s)

Vivek M. Prabhu, Samim Ali

Lower Critical Solution Temperature (LCST) Behavior in Polyelectrolyte Complex Coacervates

September 9, 2019

Author(s)

Vivek M. Prabhu, Murugappan Muthukumar, Sabin Adhikari

In light of recent experimental observations of a lower critical solution temperature (LCST) in polyelectrolyte complex coacervates (S. Ali, M. Bleuel, and V. M. Prabhu, ACS Macro Lett., 8,289, (2019)), we explore its possible mechanisms on the basis of a

Lower Critical Solution Temperature in Polyelectrolyte Complex Coacervates

March 19, 2019

Author(s)

Samim Ali, Markus Bleuel, Vivek Prabhu

Lower critical solution temperature in polyelectrolyte coacervates

February 26, 2019

Author(s)

Samim Ali, Markus Bleuel, Vivek Prabhu

Model linear oppositely-charged polyelectrolyte complexes exhibit a lower critical solution temperature. The coexist-ence curves narrow with increasing monovalent salt concentration (Cs) that lowers the polymer concentration (Cp) in the polymer-rich phase

Complex coacervation in polyelectrolytes from a coarse-grained model

August 22, 2018

Author(s)

Vivek M. Prabhu, Marat Andreev, Jian Qin, Matthew Tirrell, Juan J. de Pablo, Jack F. Douglas

Polyelectrolyte coacervation refers to the formation of distinct liquid phases that arise when polyelectrolytes of opposite charge are mixed under appropriate polymer and salt concentrations. Molecular-level studies of complex polyelectrolyte coacervation

Effect of temperature on the structure and dynamics of triblock copolymer coacervate hydrogels

July 16, 2018

Author(s)

Vivek M. Prabhu, Ryan C. Nieuwendaal, Anand Rahalkar, Juan J. DePablo, Samanvaya Srivastava, Matthew Tirrell

Triblock copolymer coacervate gels were characterized by small-angle neutron scattering (SANS) and dynamic light scattering. The oppositely charged polyelectrolyte complex core size does not change with temperature. However, the neutral middle block that

Fabrication and Characterization of Hybrid Stealth Liposomes

April 12, 2018

Author(s)

Kenneth Mineart, Vivek Prabhu, Shrinivas Venkataraman, Yi Yan Yang, James Hedrick

Cholesterol Functionalized Aliphatic N-Substituted 8 Membered Cyclic Carbonate

April 10, 2018

Author(s)

Vivek M. Prabhu, Shrinivas Venkataraman, Kenneth Mineart, James Hedrick, Yi Yan Yang

Straightforward synthesis of cholesterol functionalized aliphatic N-substituted 8 membered cyclic carbonate monomer is reported. Well-defined PEGylated diblock copolymers were readily accessed via organo catalytic ring opening polymerization. These block

Acid-induced and pH-controlled Reversible Switching of Broad-Spectrum Antibacterial Activity

February 13, 2018

Author(s)

Yin Y. Nelson, Vytautas Reipa, Xiaohong Wang, Kenneth Mineart, Vivek M. Prabhu, Nancy J. Lin, Jirun Sun

Bacterial resistance to antimicrobials is threatening millions of human lives due to indiscriminate overuse and environmental build-up of antibiotics. We present the smart regulation of antibacterial activity in biologically relevant conditions to reduce