Circularly polarized luminescence from semiconductor quantum rods templated by self-assembled cellulose nanocrystals

2020 ◽  
Vol 8 (3) ◽  
pp. 1048-1053 ◽  
Author(s):  
Yue Shi ◽  
Ziming Zhou ◽  
Xiaofei Miao ◽  
Yan Jun Liu ◽  
Quli Fan ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Helical Structure ◽  
Circularly Polarized ◽  
Quantum Rods ◽  
Left Handed ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Self Assembled

We demonstrate a significant right-handed circularly polarized luminescence of CdSe/CdS quantum rods by doping them into a self-assembled left-handed helical structure of cellulose nanocrystals.

Aggregation-induced circularly polarized luminescence of an (R)-binaphthyl-based AIE-active chiral conjugated polymer with self-assembled helical nanofibers

2015 ◽  
Vol 6 (13) ◽  
pp. 2416-2422 ◽  
Author(s):  
Shuwei Zhang ◽  
Yuan Sheng ◽  
Guo Wei ◽  
Yiwu Quan ◽  
Yixiang Cheng ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Self Assembled

An AIE-active chiral conjugated polymer P-1 exhibited aggregation-induced circularly polarized luminescence. The TEM and AFM images show that P-1 self-assembled into helical nanofibers during aggregation.

The largest CPL enhancement by further assembly of self-assembled superhelices based on the helical TPE macrocycle

2020 ◽  
Vol 7 (12) ◽  
pp. 3209-3216 ◽  
Author(s):  
Ying-Xue Yuan ◽  
Ming Hu ◽  
Kai-Ran Zhang ◽  
Ting-Ting Zhou ◽  
Song Wang ◽  
...  
Keyword(s):  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Self Assembled

Further assembly of helical self-assemblies is exploited to further boost the dissymmetry factor and obtain the largest magnification of circularly-polarized luminescence.

Self-assembly of isomeric naphthalene appended glucono derivatives: nanofibers and nanotwists with circularly polarized luminescence emission

Soft Matter ◽  
2020 ◽  
Vol 16 (17) ◽  
pp. 4115-4120 ◽  
Author(s):  
Zongwen Liu ◽  
Yuqian Jiang ◽  
Jian Jiang ◽  
Donghua Zhai ◽  
Decai Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Naphthalene Derivatives ◽  
Circularly Polarized ◽  
Luminescence Emission ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Self Assembled

Two isomers of naphthalene derivatives are self-assembled into nanofibers and nanotwists with CPL emission, respectively.

Right-/left-handed helical G-quartet nanostructures with full-color and energy transfer circularly polarized luminescence

2020 ◽  
Vol 56 (56) ◽  
pp. 7706-7709 ◽  
Author(s):  
Jingqi Chen ◽  
Xiaowei Liu ◽  
Zhiguang Suo ◽  
Chenqi Gao ◽  
Feifei Xing ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Self Assembly ◽  
Guanosine Monophosphate ◽  
Circularly Polarized ◽  
Full Color ◽  
Left Handed ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
First Time

Right- and left-handed helical G-quartet nanostructures are synthesized for the first time simultaneously via 5′-guanosine monophosphate (GMP) self-assembly, and further applied as circularly polarized luminescence (CPL) templates.

Tunable Circularly Polarized Luminescence from Molecular Assemblies of Chiral AIEgens

2019 ◽  
Author(s):  
Fengyan Song ◽  
yanhua Cheng ◽  
Qiuming Liu ◽  
Jacky W. Y. Lam ◽  
Fafu Yang ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Bragg Reflection ◽  
Helical Structure ◽  
Helical Axis ◽  
Molecular Assemblies ◽  
Isotropic Liquid ◽  
Circularly Polarized ◽  
Chemical Structures ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

<p>Circularly polarized luminescence (CPL) is important to chiral photonic technologies. In the molecular systems, besides their intrinsic chemical structures, the architectures of molecular assemblies at the mesoscopic scale also account for the final macroscopic CPL properties. Herein, tunable CPL responses can be induced through architectural regulation of these molecular assemblies in suspension and solid states. A liquid crystalline assembled system of DPCE-ECh exhibiting smectic C* phase with a high dissymmetry factor (<i>g</i><sub>CD</sub> = -0.20 and <i>g</i><sub>lum</sub> = +0.38) is reported. The intense and apparent CD and CPL of the film stem from the intrinsic helical structure of the molecular assembles with<b> </b>weak<b> </b>contribution of Bragg reflection, where the helical axis is perpendicular to the optical axis and is parallel to the direction of the glass substrate. To the best of our knowledge,<b> </b>this large <i>g</i><sub>lum</sub> factor is very rare for organic compounds even in the assembled state formed by annealing at smectic liquid crystalline temperature. Interestingly, strong CPL signal with <i>g</i><sub>lum</sub> value of +0.18 is still recorded when DPCE-ECh is annealed at chiral isotropic liquid (Iso*) state. On the other hand, DPCE-ACh can form two coexistence phases of chiral hexagonal and smectic liquid-crystalline phases due to intermolecular hydrogen bonding. The non-periodic molecular orientations of DPCE-ACh break itself helical structure to give a weak negtive CPL signal in 10<sup>-3</sup> order. This work thus provides a new insight for developing efficient chiroptical materials in the aggregate state and profound implications in high-performance CPL-based device.</p>

A self-assembled nanohelix for white circularly polarized luminescence via chirality and energy transfer

Nanoscale ◽  
2020 ◽  
Vol 12 (14) ◽  
pp. 7895-7901 ◽  
Author(s):  
Sijia Ma ◽  
Jian Jiang ◽  
Zongwen Liu ◽  
Yuqian Jiang ◽  
Zhanpeng Wu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Optical Activity ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Self Assembled ◽  
Chiral Nanostructures

Chiral nanostructures and their optical activity have been attracting great interest.

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