Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Structural Control of Plasmon Resonance in Molecularly Linked Metal Oxide Nanocrystal Gel Assemblies
ACS Nano ( IF 15.8 ) Pub Date : 2023-11-27 , DOI: 10.1021/acsnano.3c09515 Jiho Kang 1 , Zachary M Sherman 1 , Diana L Conrad 2 , Hannah S N Crory 2 , Manuel N Dominguez 2 , Stephanie A Valenzuela 2 , Eric V Anslyn 2 , Thomas M Truskett 1, 3 , Delia J Milliron 1, 2
ACS Nano ( IF 15.8 ) Pub Date : 2023-11-27 , DOI: 10.1021/acsnano.3c09515 Jiho Kang 1 , Zachary M Sherman 1 , Diana L Conrad 2 , Hannah S N Crory 2 , Manuel N Dominguez 2 , Stephanie A Valenzuela 2 , Eric V Anslyn 2 , Thomas M Truskett 1, 3 , Delia J Milliron 1, 2
Affiliation
|
Nanocrystal gels exhibit collective optical phenomena based on interactions among their constituent building blocks. However, their inherently disordered structures have made it challenging to understand, predict, or design properties such as optical absorption spectra that are sensitive to the coupling between the plasmon resonances of the individual nanocrystals. Here, we bring indium tin oxide nanocrystal gels under chemical control and show that their infrared absorption can be predicted and systematically tuned by selecting the nanocrystal sizes and compositions and molecular structures of the link-mediating surface ligands. Thermoreversible assemblies with metal–terpyridine links form reproducible gel architectures, enabling us to derive a plasmon ruler that governs the spectral shifts upon gelation, predicated on the nanocrystal and ligand compositions. This empirical guide is validated using large-scale, many-bodied simulations to compute the optical spectra of gels with varied structural parameters. Based on the derived plasmon ruler, we design and demonstrate a nanocrystal mixture whose spectrum exhibits distinctive line narrowing upon assembly.
中文翻译：
分子连接金属氧化物纳米晶体凝胶组件中等离子共振的结构控制
纳米晶体凝胶表现出基于其组成构件之间相互作用的集体光学现象。然而，它们固有的无序结构使得理解、预测或设计特性变得具有挑战性，例如对单个纳米晶体的等离激元共振之间的耦合敏感的光学吸收光谱。在这里，我们将氧化铟锡纳米晶体凝胶置于化学控制下，并表明可以通过选择纳米晶体尺寸、组成以及介导表面配体的分子结构来预测和系统地调节它们的红外吸收。具有金属-三联吡啶连接的热可逆组件形成可重复的凝胶结构，使我们能够根据纳米晶体和配体组成推导出控制凝胶化时光谱变化的等离激元标尺。本经验指南通过大规模、多体模拟来计算具有不同结构参数的凝胶的光谱进行了验证。基于衍生的等离激元标尺，我们设计并演示了一种纳米晶体混合物，其光谱在组装时表现出独特的谱线变窄。
更新日期：2023-11-27
中文翻译：
分子连接金属氧化物纳米晶体凝胶组件中等离子共振的结构控制
纳米晶体凝胶表现出基于其组成构件之间相互作用的集体光学现象。然而，它们固有的无序结构使得理解、预测或设计特性变得具有挑战性，例如对单个纳米晶体的等离激元共振之间的耦合敏感的光学吸收光谱。在这里，我们将氧化铟锡纳米晶体凝胶置于化学控制下，并表明可以通过选择纳米晶体尺寸、组成以及介导表面配体的分子结构来预测和系统地调节它们的红外吸收。具有金属-三联吡啶连接的热可逆组件形成可重复的凝胶结构，使我们能够根据纳米晶体和配体组成推导出控制凝胶化时光谱变化的等离激元标尺。本经验指南通过大规模、多体模拟来计算具有不同结构参数的凝胶的光谱进行了验证。基于衍生的等离激元标尺，我们设计并演示了一种纳米晶体混合物，其光谱在组装时表现出独特的谱线变窄。
京公网安备 11010802027423号