三元运算
发光
材料科学
纳米颗粒
菁
窄带
纳米技术
飞秒
荧光
光电子学
光学
物理
计算机科学
程序设计语言
激光器
作者
Zhuoming Ma,Zilong Guo,Min Du,Yandong Han,Zheng Xue,Xiaonan Ma,Wensheng Yang
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2023-04-06
卷期号:6 (7): 5394-5403
被引量:2
标识
DOI:10.1021/acsanm.2c05518
摘要
Developing pure organic nanostructures with circularly polarized luminescence (CPL) response is of high interest for the community. As ordered nanoassemblies of a conjugated dye, the J-aggregate exhibits an ultra-narrow emission bandwidth, a high radiative rate, and a largely red-shifted emission but has been rarely employed for constructing a CPL system due to the minimized Stokes shift and the rigorous condition of assembling. In this work, we developed a simple strategy of ternary co-assembling to facilitate narrowband CPL response of cyanine J-aggregates, in which J-aggregate emitters were co-assembled as a shell of light harvester nanoparticles to form the core–shell structures in the nanoscale. Taking advantage of the core–shell energy transfer (FRET) and chiral transfer from assembled nanohelixes to J-aggregate emitters, the narrowband (fwhm <10 nm and centered at ∼585 nm) CPL response of TDBC-J was demonstrated with a dissymmetric factor glum of ±1 × 10–3. Our work provides a simple approach to facilitate narrowband CPL response from J-aggregates in an aqueous solution, which might be able to offer opportunities to achieve CPL response in a greatly red-shifted even near-infrared regime with potential applications.
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