Thursday, January 17th: ABC....z Seminar: Unraveling mechanisms in soft matter-directed photonic materials

Event Date: 

Thursday, January 17, 2019 - 3:45pm

Event Date Details: 

Refreshments serves at 3:30pm.

Event Location: 

  • Broida 1640
  • ABC...z Seminar Series

A defining property of soft matter is the self-assembly of complex structures programmed by interactions among individual components. This property can be harnessed to create novel photonic materials through a “bottom-up” approach, where soft matter building blocks guide the assembly of various light-active elements or even form the optical nanostructures themselves during assembly. I will discuss efforts to understand the fundamental properties of two classes of optical materials formed using polymer building blocks. Few-atom silver clusters exhibiting high quantum yield fluorescence can be stabilized using the biopolymer DNA.  Many properties of these clusters remain poorly understood. I am combining high throughput experiments with tools from data science to better understand the process by which DNA sequence selects cluster size and color and the process that leads to photoemission of these clusters. Next, I will discuss photonic materials templated by synthetic block copolymers. Block copolymers can guide the assembly of optically active nanoparticles and molecules into ordered structures, and a better understanding of this process may allow researchers to tune the interactions among these photonic elements. I am studying how block copolymer properties tune assembly of colloidal quantum dots and am investigating the molecular mechanisms behind a shape- changing polymer nanostructure.

Stacy Copp, Los Alamos National Laboratory