Engineered Advanced Materials Portfolio

Engineered Advanced Materials PortfolioVahid Raeesi, Ph.D. in Nano-Biomaterials technology

Outline Organic Nanomaterials Inorganic Nanomaterials Inorganic-Organic Nanocomposites (Multifunctional Materials)

Organic Nanomaterials

Polymer Nanoparticles

Material: Biodegradable PLGA polymer

Synthesis method: Wet chemistry

Application: Vehicles for drug storage, Controlled release

Nanocapsules (100nm)Solid NanoparticlesScale bar is 100nmUnpublished work

Copolymer Microparticles

Unpublished workOil-in-Water emulsion from mPEG-b-PLGA Water-in-Oil emulsion from mPEG-b-PLGA Material: Biodegradable PEG-b-PLGA copolymer

Synthesis method: Wet chemistry

Application: Vehicles for cargo storage, Controlled release

Inorganic Nanomaterials

Gold Nanorods

Synthesis methods: Seeded growth Application: Photo-thermal nanoconvertor, Drug delivery Gold NanorodsV.Raeesi and W. C. Chan, Nanoscale, 2016, DOI: 10.1039/C5NR08463F Mohamed A. Abdou Mohamed and Vahid Raeesi, Patricia Turner, Anu Rebbapragada, Kate Banks, Warren C. W. Chan, Biomaterials, 10.1016/j.biomaterials.2016.04.009 (1st Co-author)

Gold Nanospheres(50nm) Gold Nanospheres(120nm) Gold NanospheresSynthesis methods: Controlled salt-reduction Application: Diagnostic probes, Drug delivery, Bioimaging V.Raeesi and W. C. Chan, Nanoscale, 2016, DOI: 10.1039/C5NR08463F

Zinc Oxide Nanostructures

ZnO nanoparticlesZnO nanofilmZnO nanowire filmSynthesis methods: Thermal decomposition, Chemical Vapor Deposition, Supercritical Fluid A.Reiser, V. Raeesi, G.M. Prinz, M. Schirra, M. Feneberg, U. Roder, R. Sauer, K.Thonke, Microelectronics, Vol. 40, 2, 306-308 (2009) Application: Blue emission LED devices, High electron mobility electrodes for solar cells,Piezoelectric electrodes for biosensing

Positive Temperature Coefficient FillersSynthesis method:

Organo-modification by Dimethylglyoxime

Application: As fillers for polymer composite temperature-dependent switches

Material:

Carbon black modified with Ni & Au particles

B.Pourabbas,V.Raeesi and S.Ghasemi,Polymer based PTC composites from Carbon Blacks modified with metal particles ,IUPAC International Polymer Congress MACRO2004,Symposium 5.1:Polymers for energy ,electronic,opto-electronic and optical applications ,France , July 4-9, 2004SEM image of Carbon black modified with Ni particles

NanophosphorsSynthesis method: Chemical Vapor Synthesis, Wet Chemistry

Application: High quality white LEDs

Material: YAG:Ce (or BaFBr2)

H.Paul, H. Kaps, Th. Gleich, V. Raeesi, U. Herr and M. Zachau, Solid State Phenomena, Vol. 128 (2007), pp712

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Inorganic-Organic Nanocomposites (Multifunctional materials)

Polymer/Gold Nanoparticles

100nm

Gold NP-embedded Polymer NanocapsuleGold NR-embedded Polymer Nanoparticle100nmGold NP-impregnated Polymer NanoparticlesUnpublished workMaterial: PLGA polymer , Gold nanoparticles

Synthesis method: Wet chemistry

Application: Multifunctional nanoparticles for light-triggered drug delivery, bioimaging, bacterial disinfection

Photo-thermal NanogelMaterial: Thermogel , Gold nanoparticles

Synthesis method: Wet chemistry

Application: Controlled microscopic heat concentrator, High heating rate applications, Bacterial disinfector, Smart light-responsive coatings

Mohamed A. Abdou Mohamed and Vahid Raeesi, Patricia Turner, Anu Rebbapragada, Kate Banks, Warren C. W. Chan, Biomaterials, 10.1016/j.biomaterials.2016.04.009 (1st Co-author)

DNA-based Nanoassemblies

Scale bar is 50nmMaterial: DNA , Gold nanoparticles

Synthesis method: DNA assembly

Application: Multifunctional nanovehicle for light-triggered drug & nucleic acid delivery, bioimaging

V.Raeesi, Chou. L.C., W.C.Chan, (final review in Advanced Materials)

Polymer/Quantum Dot Nano-MicroparticlesUnpublished workMaterial: PLGA polymer , Quantum Dots(640nm)

Synthesis method: Wet chemistry

Application: Multifunctional nanoparticles for drug delivery, bioimaging

QD-encapsulated Microcapsules

QD-coated Nanocapsules

Polymer/clay nanocomposite

Intercalated clayABS matrixSynthesis method:

Solvent / Non-solvent

Application:

Retarded thermal degradation, flame point

Material:

ABS/Silicate Nanocomposite

B.Pourabas ,V. Raeesi, Polymer, 46, 5533-5540 (2005)

TEM image of ABS/Silicate Nanocomposite