title: Controlled Charge Trapping and Retention in Large-Area Monodisperse Protein Metal-Nanoparticle Conjugates.
abstract: Here, we report on charge-retention transistors based on novel protein-mediated Au nanoparticle (NP) arrays, with precise control over dimension and distribution. Individual NPs are coated with alpha-synuclein, an amyloidogenic protein responsible for Lewy body formation in Parkinson's disease. Subsequently, a monolayer of protein-NP conjugates is successfully created via a simple and scalable solution deposition to function as distributed nanoscale capacitors. Controllability over the film structure translates into the tunability of the electrical performance; pentacene-based organic transistors feature widely varying programmability and relaxation dynamics, providing versatility for various unconventional memory applications.
authors.forename: Chang-Hyun
authors.initials: CH
authors.lastname: Kim
authors.affiliation: School of Chemical and Biological Engineering, Institute of Chemical Processes, College of Engineering, Seoul National University , Seoul 08826, Republic of Korea.
authors.forename: Ghibom
authors.initials: G
authors.lastname: Bhak
authors.affiliation: School of Chemical and Biological Engineering, Institute of Chemical Processes, College of Engineering, Seoul National University , Seoul 08826, Republic of Korea.
authors.forename: Junghee
authors.initials: J
authors.lastname: Lee
authors.forename: Sujin
authors.initials: S
authors.lastname: Sung
authors.forename: Sungjun
authors.initials: S
authors.lastname: Park
authors.affiliation: School of Chemical and Biological Engineering, Institute of Chemical Processes, College of Engineering, Seoul National University , Seoul 08826, Republic of Korea.
authors.forename: Seung R
authors.initials: SR
authors.lastname: Paik
authors.forename: Myung-Han
authors.initials: MH
authors.lastname: Yoon
mesh_terms: D006046:Gold / Q000737:chemistry*; D006801:Humans; D053758:Nanoparticles / Q000737:chemistry*; D014173:Transistors, Electronic; D051844:alpha-Synuclein / Q000737:chemistry*
chemical_list: C497604:SNCA protein, human; D051844:alpha-Synuclein; D006046:Gold
keywords: charge trapping; electrical memories; metal nanoparticles; organic transistors; protein self-assembly