Circularly Polarized Luminescent CdS Quantum Dots Prepared in a Protein Nanocage

Naito, Masanobu; Iwahori, Keisuke; Miura, Atsushi; Yamane, Midori; Yamashita, Ichiro

doi:10.1002/anie.201002552

Cited by 160 publications

(126 citation statements)

References 17 publications

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“…64 These examples include the ligand induced CPL from CdSe NPs 62 and CPL from CdS NPs synthesized inside protein cages. 63 The enhanced electromagnetic field induced by localized surface plasmon resonance (LSPR) led to emphasized CPL in assemblies of porphyrin derivatives on silver NPs. 64 Moreover, recent reports suggested intrinsic chiral geometries for truncated tetrahedral CdTe NPs, 65 and CdSe/ZnS core/ shell NPs and nanorods.…”

Section: The Journal Of Physical Chemistry Lettersmentioning

confidence: 99%

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

Kumar

Nakashima

Kawai

2015

J. Phys. Chem. Lett.

608

373

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Circularly polarized luminescence, or CPL, is a luminescence phenomenon that provides the differential emission intensity of right and left circularly polarized light, thereby providing information on the excited state properties of the chiral molecular systems. In recent years, there has been a growing interest toward the development of organic chromophores capable of circularly polarized emission due to their potential applications in sensors, asymmetric synthesis as well as display and optical storage devices. The major drawback with organic molecules is the low dissymmetric factors exhibited by these systems. One of the recent strategies adopted for the improvement in luminescence dissymmetry of organic systems is through the controlled self-assembly of chromophores. In this Perspective, we highlight the recent experimental and theoretical developments in the field of chiral organic chromophoric systems and their self-assembly, that has produced promising results toward the enhancement of glum values in CPL.

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Section: The Journal Of Physical Chemistry Lettersmentioning

confidence: 99%

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

Kumar

Nakashima

Kawai

2015

J. Phys. Chem. Lett.

608

373

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“…161 The 8 nm inner space of the apoferritin provides an excellent nanoreactor for the metal chalcogenide nucleation and growth, while the outer shell is suitable to conjugate various biomolecules and renders QDs with circularly polarized optical property (shown in Figure 11.5.15). [168][169][170][171] Baneyx et al designed purified fusion proteins containing ZnS binding peptide and adaptors for immunoglobin G (IgG) to prepare immune-ZnS QDs. 172 The combining of stabilization and conjugation functionalities into one fusion protein can facilitate the one-pot synthesis of biofunctional QDs probes.…”

Section: Bio-assisted Strategymentioning

confidence: 99%

CHAPTER 11.5. Nanoparticles and Quantum Dots

Yuwen¹,

Wang²

2013

Handbook of Chalcogen Chemistry : New Perspectives in Sulfur, Selenium and Tellurium

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“…Experimental studies showed that stabilizer-modified quantum dots, such as CdS and CdTe, enabled circular dichroism, however, they were circularly polarized luminescenceinactive. [25] This lead to new chiral inorganic nanomaterials based on quantum dots and some novel approaches for circularly polarized luminescence generation. [24] It was later hypothesized that enclosing quantum dots in a chiral environment may render quantum dots with circularly polarized luminescence activity, indeed, such a hypothesis found experimental evidences in a chiral nanostructure of apoferritin encapsulating CdS.…”

mentioning

confidence: 99%

Circularly Polarized Luminescent Carbon Dot Nanomaterials of Helical Superstructures for Circularly Polarized Light Detection

Zheng

Wang

et al. 2018

Advanced Optical Materials

124

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representatives of this category. [21] Early attempts to render inorganic quantum dots with chiroptical activity involve the use of chiral stabilizers. Experimental studies showed that stabilizer-modified quantum dots, such as CdS and CdTe, enabled circular dichroism, however, they were circularly polarized luminescenceinactive. [22,23] Theoretical calculations suggested that the chiral stabilizers caused distortion of the surface layer, however, the core of quantum dots remained achiral, which may explain the circularly polarized luminescence inactivity. [24] It was later hypothesized that enclosing quantum dots in a chiral environment may render quantum dots with circularly polarized luminescence activity, indeed, such a hypothesis found experimental evidences in a chiral nanostructure of apoferritin encapsulating CdS. [25] This lead to new chiral inorganic nanomaterials based on quantum dots and some novel approaches for circularly polarized luminescence generation. Representative work include CdSe quantum dots grafted with chiral cysteine, [26] CdTe nanowires embedded in stretchable twisted fibers [4] and chiral nanostructures of chalcogenide quantum dots. [27] However, these inorganic nanostructures are inadequate for applications due to their tedious synthesis procedures and low CPL strength with dissymmetry factors in the range of 10 −3 -10 −4 . It is clear that circularly polarized luminescent quantum dot nanomaterials with high strength, precise handedness, tunable wavelengths, and suitable for scale-up are highly desirable.Carbon dots are remarkable inorganic phosphors with distinct features such as tunable photoluminescence, high emission intensity, photostability, biocompatibility, and easy availability, which are superior to many inorganic quantum dots. [28][29][30][31] They are promising for bioimaging, sensing, light emitting diodes, energy storage, photocatalysis, and optoelectronic applications. [32][33][34][35][36][37][38] It can be anticipated that conferring circularly polarized luminescence on carbon dots will avail novel circularly polarized luminescent nanomaterials for biomedicine and nanoscience. Such materials, to the best of our knowledge, are not reported to date.Cellulose nanocrystals are renewable, biocompatible, and low-cost nanomaterials. They have intrinsic ability to selfassemble forming a left-handed chiral nematic organization that can be preserved upon drying. [39][40][41] Taking advantage of this property, a realm of cellulose nanocrystal-based helical Circularly polarized luminescent carbon dot nanomaterials of self-organized helical superstructures based on cellulose nanocrystals enable strong, right-handed, and multicolor tunable circularly polarized luminescence with extraordinary dissymmetry factors up to −0.74. The effects of emission intensity and carbon dots loading on the strength of the righthanded circularly polarized luminescence are experimentally observed and theoretically explained. Potentials of the carbon dots-cellulose nanomaterials for circularly polarized ...

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Circularly Polarized Luminescent CdS Quantum Dots Prepared in a Protein Nanocage

Cited by 160 publications

References 17 publications

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

Circularly Polarized Luminescence in Chiral Molecules and Supramolecular Assemblies

CHAPTER 11.5. Nanoparticles and Quantum Dots

Circularly Polarized Luminescent Carbon Dot Nanomaterials of Helical Superstructures for Circularly Polarized Light Detection

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