Thermomechanically controlled fluorescence anisotropy in thin films of InP/ZnS quantum dots

Abstract

Macroscopic scale sources of polarized light play a fundamental role in designing light-emitting devices. In this communication we report the formation of nano- and macro-scale ordered, layered assemblies of InP/ZnS...

Tunable Circularly Polarized Luminescence via Chirality Induction and Energy Transfer from Organic Films to Semiconductor Nanocrystals

“…In the next step, QDs were modified with a monolayer of dodecanethiol/L ligands using a two-step ligand exchange reaction described in the previous report. 75 A 3-fold molar excess of dodecanethiol was added to InP/ZnS capped with OAm dispersion in toluene and left overnight in a glass vial, ensuring magnetic stirring. After this time, to remove the unbound ligands, the QDs were precipitated several times with acetone and dispersed in toluene.…”

Probing the chirality and optical activity of organic molecules through the anisotropic photoluminescence of porous silicon

“…23 This technique has been used in the development of new applications for chiral molecules, such as in novel drugs, analytical chemistry, and materials science. [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] The importance of studying the PL anisotropy of porous silicon (PSi) has been highlighted in previous research studies. [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] The heterogeneous nature of the mesoporous structure of PSi causes variations in its optical characteristics along different directions; these variations are manifested in FA.…”

“…23 This technique has been used in the development of new applications for chiral molecules, such as in novel drugs, analytical chemistry, and materials science. 24–38…”

Light-Responsive Supramolecular Nanotubes-Based Chiral Plasmonic Assemblies

“…We hypothesized that the combination of metallic NPs with light-responsive, chiral LC material could overcome these barriers and offer access to multifunctional optoelectronic materials with chiroptical properties . The combination of LC properties with metallic − and semiconductor , NPs allowed for the observation of a number of physical effects that are encoded in and enhanced by the proper ordering of NPs . Since these properties are dependent on NPs order, and NPs packing is dependent on LC, it is possible to control LC/NPs composite materials using factors such as temperature or UV and Vis light irradiation. , Beyond remote control, preliminary studies have shown that composites obtained by doping morphologically chiral LC with Au NPs offer possibilities for the construction of soft and chiral functional systems. , However, achieving highly organized chiral assemblies of NPs with properties controlled remotely, and via multiple stimuli, all in one system, has not been achieved yet.…”

“…We hypothesized that the combination of metallic NPs with light-responsive, chiral LC material could overcome these barriers and offer access to multifunctional optoelectronic materials with chiroptical properties. 34 The combination of LC properties with metallic 35 − 38 and semiconductor 39 , 40 NPs allowed for the observation of a number of physical effects that are encoded in and enhanced by the proper ordering of NPs. 41 Since these properties are dependent on NPs order, 42 and NPs packing is dependent on LC, it is possible to control LC/NPs composite materials using factors such as temperature or UV and Vis light irradiation.…”