title: Oligonucleotide flexibility dictates crystal quality in DNA-programmable nanoparticle superlattices.
abstract: The evolution of crystallite size and microstrain in DNA-mediated nanoparticle superlattices is dictated by annealing temperature and the flexibility of the interparticle bonds. This work addresses a major challenge in synthesizing optical metamaterials based upon noble metal nanoparticles by enabling the crystallization of large nanoparticles (100 nm diameter) at high volume fractions (34% metal).
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, IL, 60208, USA; X-ray Science Division, Argonne National Laboratory, 9700 S. Cass Ave, Argonne, IL, 60439, USA.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Senesi
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Eichelsdoerfer
authors.forename: Keith A
authors.initials: KA
authors.lastname: Brown
authors.forename: Byeongdu
authors.initials: B
authors.lastname: Lee
authors.forename: Evelyn
authors.initials: E
authors.lastname: Auyeung
authors.forename: Chung Hang J
authors.initials: CH
authors.lastname: Choi
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Macfarlane
authors.forename: Kaylie L
authors.initials: KL
authors.lastname: Young
authors.forename: Chad A
authors.initials: CA
authors.lastname: Mirkin
mesh_terms: D004247:DNA / Q000737:chemistry*; D005026:Ethylene Glycols / Q000737:chemistry; D017612:Gold Compounds / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D009841:Oligonucleotides / Q000737:chemistry*; D010316:Particle Size; D010710:Phosphates / Q000737:chemistry; D018583:Pliability; D053838:Scattering, Small Angle; D012965:Sodium Chloride / Q000737:chemistry; D013057:Spectrum Analysis; D044366:Transition Temperature
chemical_list: D005026:Ethylene Glycols; D017612:Gold Compounds; D009841:Oligonucleotides; D010710:Phosphates; C077067:hexaethylene glycol; D012965:Sodium Chloride; D004247:DNA
keywords: DNA; X-ray scattering; ligand flexibility; metamaterials; superlattices