DNA-controlled assembly of a NaTl lattice structure from gold nanoparticles and protein nanoparticles.
DNA-controlled assembly of a NaTl lattice structure from gold nanoparticles and protein nanoparticles.
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由可定制的构建块形成非致密金刚石结构是胶体结晶的一个重要目标，因为非致密金刚石晶格是可见光范围内光子晶体的重要组成部分。然而，设计自组装成非紧凑结构的纳米粒子系统已被证明是困难的。虽然已经提出了几种方法，但金刚石结构的单组分纳米颗粒组装尚未报道。二进制系统，其中至少有一个组件排列在一个钻石晶格中，提供了替代方案，但粒子间相互作用的控制是这种方法的关键。DNA已在许多系统中用于此目的。在这里，我们展示了使用表面修饰的Qβ噬菌体衣壳颗粒和金纳米颗粒（AuNPs）通过dna编程结晶产生的非紧凑晶格，设计成具有相似的有效半径。当与适当的连接寡核苷酸结合时，这些成分形成含有相互穿透的有机和无机金刚石晶格的natl型胶体晶体结构，由小角x射线散射（SAXS）确定。因此，DNA对组装的控制被证明与具有非常不同性质的粒子兼容，只要它们易于表面修饰。
The formation of a non-compact diamond structure from tailorable building blocks is an important goal in colloidal crystallization because the non-compact diamond lattice is an essential component of photonic crystals for the visible light range. However, designing nanoparticle systems that self-assemble into non-compact structures has proven difficult. Although several methods have been proposed, single-component nanoparticle assembly of a diamond structure has not been reported. Binary systems, in which at least one component is arranged in a diamond lattice, provide alternatives, but control of interparticle interactions is critical to this approach. DNA has been used for this purpose in a number of systems . Here we show the creation of a non-compact lattice by DNA-programmed crystallization using surface-modified Qβ phage capsid particles and gold nanoparticles (AuNPs), engineered to have similar effective radii. When combined with the proper connecting oligonucleotides, these components form NaTl-type colloidal crystalline structures containing interpenetrating organic and inorganic diamond lattices, as determined by small-angle X-ray scattering (SAXS). DNA control of assembly is therefore shown to be compatible with particles possessing very different properties, as long as they are amenable to surface modification.
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影响因子：
15
作者：
Prasuhn, Duane E., Jr.;Singh, Pratik;Finn, M. G.
通讯作者：
Finn, M. G.
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64.8
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Mirkin, CA;Letsinger, RL;Storhoff, JJ
通讯作者：
Storhoff, JJ
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56.9
作者：
Kalsin, AM;Fialkowski, M;Grzybowski, BA
通讯作者：
Grzybowski, BA
影响因子：
4
作者：
Ngo, TT;Liddell, CM;Joannopoulos, JD
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Joannopoulos, JD
影响因子：
8.6
作者：
YABLONOVITCH, E
通讯作者：
YABLONOVITCH, E