Self-assembly and Nanotechnology 10.524

Lecture 3 Self-assembled StructuresLecture 3. Self assembled Structures (Nano-, Micro- and Macro-scales)

Instructor: Prof. Zhiyong Gu (Chemical Engineering& UML CHN/NCOE Nanomanufacturing Center)

Self-assembly and Nanotechnology

Lecture 3: Self-assembled Structures

Table of Contents

Molecular based

Block copolymers: amphiphilic molecules

Inorganic (natural)

Nanoparticles, nanowires, carbon nanotubes

Micro and macro-structures

Surface tension driven (enabled) self-assembly: theory and ( ) y ycase studies

Biomolecular self-assembly (Lecture 5)

Self-assembly and Nanotechnology

Lecture 3: Self-assembled Structures

Self-assembly at different scales

Micro-

Nano- Macro-

Atoms, molecules, ●●● Human, earth, ●●●Atoms, molecules, ●●● , ,

Self-assembly and Nanotechnology

Lecture 3: Self-Assembled Structures

Self-assembly and Nanotechnology

From Gracias, Micro- and Nanotechnology

Lecture 3: Self-Assembled Structures

Examples of complex molecules and supramolecular assembly

Self-assembly and NanotechnologyBosman et al., JACS, 2003, 715-728

Schematic representation of the modular approach to star polymers

Lecture 3: Self-Assembled Structures

In solutions

Ordered nanostructuresof block copolymers

Alexandridis, Olsson, Lindman, Langmuir 1998, 14, 2627-2638

Self-assembly and NanotechnologyOn surfaces

Lecture 3: Self-Assembled Structures

Self-assembly and Nanotechnology

Lecture 3: Self-Assembled Structures

Self-assembly at different scales

Morris, Ho, and Parviz, 2005

Self-assembly and Nanotechnology

Lecture 3: Self-Assembled Structures

Self-assembly of nanoparticles

Barry, Hoon, and Jacobs, 2004

Self-assembly and Nanotechnology

Barry, Hoon, and Jacobs, 2004

Lecture 3: Self-Assembled Structures

Self-assembly of nanoparticles

Drying-mediated self-assemblyDrying-mediated self-assembly of nanoparticles

Rabani et al., Nature, 2003

Self-assembly and Nanotechnology

Lecture 3: Self-Assembled Structures

Self-assembly of nanoparticles

TEM image of polymer 1-Thy-Au aggregates formed at different temperatures. a, 23.8C. Inset, representative self assembled microparticle. b, -20 8C. c, 10 8C.

Wang et al., Soft Matter, 2005

Self-assembly and Nanotechnology

Boal et al., Nature, 2000

Lecture 3: Self-Assembled Structures

Self-assembly of nanowiresSelf-assembly of nanowires

Magnetic assembly

Self-assembly and NanotechnologyPark, Lim, Chung, Mirkin. Science 2004, 303, 348

Magnetic assembly

Love, Urbach, Prentiss, Whitesides. JACS, 2003, 125, 12696.

Lecture 3: Self-Assembled Structures

Self-assembly of nanowiresSelf-assembly of nanowires

“Glued” 3D bundles

“Glued” 2D networksGlued 2D networks

Self-assembly and Nanotechnology Gu, Chen, Gracias. Langmuir 2004, 20,11308.

Lecture 3: Self-Assembled Structures

Self-assembly of nanowires nanoribbonsSelf-assembly of nanowires, nanoribbons

ZnO

Self-assembly and Nanotechnology Wen et al., Chem. Phys. Lett., 2003

Lecture 3: Self-Assembled Structures

Self-assembly of carbon nanotubes

Directed assembly of organized, multiwalled carbon-nanotube structures grown by chemical-vapour deposition.

Self-assembly and Nanotechnology

g y p p

Wei et al., Nature, 2002

Lecture 3: Self-Assembled Structures

Self-assembly of carbon nanotubes for brushes

Self-assembly and Nanotechnology

Cao et al., Nature Mater., 2005

Lecture 3: Self-Assembled Structures

Hi hi l lf bl f t l t tHierarchical self-assembly of metal nanostructureson diblock copolymer scaffolds

Self-assembly and NanotechnologyLopes & Jaeger. Nature, 2001

Lecture 3: Self-Assembled Structures

El t t ti ll Di t d S lf bl f N ti l dElectrostatically Directed Self-assembly of Nanoparticles andnanowires to form Nanoparticle and Nanowire Based Devices

Self-assembly and NanotechnologyBarry, Hoon, and Jacobs, 2004

Lecture 3: Self-Assembled Structures

St bl fi ti f b tStable configuration of a bar magnet

Assembled magnets

Self-assembly and Nanotechnology

http://www.nanonet.go.jp/english/kids/k-make/organization.html

Lecture 3: Self-Assembled Structures

Mi l lf blMicro-scale self-assembly

Self-assembly of 5 micrometer glassspheres on a mica surface. The spheresare initially suspended in a drop ofwater on the mica. As the dropwater on the mica. As the dropevaporates, the spheres are packedtogether by the surface tension at thedrop's edge. Slight irregularities in thepacking can be seen, and are the resultpacking can be seen, and are the resultof irregularly shaped spheres.

Size : 5 microns

http://www.chem.wisc.edu/~ellis/People/Shaw/spheres.html

Size : 5 microns

p p p

Self-assembly and Nanotechnology

Lecture 3: Self-Assembled Structures

Millimeter scale self-assembly

Triangles, made of polydimethylsiloxane with magnetized strontium ferrite along the edges, self assemble on the surface of water. The different color triangles are

i l i d h d h h i Thoppositely magnetized so they are expected to have the strongest attractions. The dish and camera are moved circularly to produce a wave that moves the pieces. The movie plays in real time.

http://mrsec.wisc.edu/Edetc/cineplex/self/index.html

Self-assembly and Nanotechnology

Lecture 3: Self-Assembled Structures

Self-assembly and NanotechnologyBarry, Hoon, and Jacobs, 2004

Lecture 3: Self-Assembled Structures

Programmable Surface Tension Driven Self-assembly of MicrometerProgrammable Surface Tension Driven Self-assembly of Micrometer sized Components to Form Multi-component Hybrid Microsystems

Self-assembly and NanotechnologyBarry, Hoon, and Jacobs

Lecture 3: Self-Assembled Structures

Live example I: Reversible and Irreversible Metal Nanowire Networks and Vertically-Aligned Arrays

Papadakis, Gu, Gracias. Applied Physics Letters 2006, 88, 233118

Self-assembly and Nanotechnology

http://netserver.aip.org/cgi-bin/epaps?ID=E-APPLAB-88-202623

Lecture 3: Self-Assembled Structures

Live example II: Programmable Self-assembly

S l G iffith MIT

Self-assembly and Nanotechnology

Saul Griffith, MIThttp://www.media.mit.edu/physics/demos/crystal.mpg

Lecture 3: Self-Assembled Structures

Self-assembly and Nanotechnology

Lecture 3: Self-assembled Structures

Final thought: Create or develop self-assembledstructures at different scales

Micro-

Nano- Macro-

Atoms, molecules, ●●● Human, earth, ●●●Atoms, molecules, ●●● , ,

Self-assembly and Nanotechnology