Multiple Stimuli-Responsive and White-Light Emission of One-Pot Synthesized Block Copolymers Containing Poly(3-hexylthiophene) and Poly(triethyl glycol allene) Segments

2015 ◽  
Vol 48 (15) ◽  
pp. 5204-5212 ◽  
Author(s):  
Yan-Yu Hu ◽  
Ming Su ◽  
Cui-Hong Ma ◽  
Zhipeng Yu ◽  
Na Liu ◽  
...  
Keyword(s):  
Block Copolymers ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Stimuli Responsive ◽  
One Pot

scholarly journals Single-Component White Light Emitting CdSexSy Alloy Nanocrystals Through Phosphine-Free Route

2020 ◽  
Author(s):  
Shilpi Jaiswal ◽  
Jyotsana Pathak ◽  
Abhijit Patra
Keyword(s):  
Quantum Yield ◽  
White Light ◽  
Light Emission ◽  
Semiconductor Nanocrystals ◽  
White Light Emission ◽  
Molar Ratio ◽  
Visible Range ◽  
One Pot ◽  
Light Emitting ◽  
Hydrogel Matrix

Semiconductor nanocrystals are promising for display and lighting devices. Herein, we report a facile one-pot synthetic route to fabricate white light emitting CdSexSy nanocrystals with enhanced quantum yield using CdO, S powder, and Se powder as precursors. The phosphine-free route was adopted, employing paraffin oil as the reducing agent and solvent for the fabrication. The optical properties can be effectively tailored by controlling the reaction time and the molar ratio of Se/S. The emission of pristine CdSexSy nanocrystals covered a broad visible range from 400 to 750 nm. The CdSexSy nanocrystals (Se/S = 0.4) exhibited white-light emission with quantum yield of 50 ± 3 % and Commission Internationale de l'Eclairage (CIE) chromaticity coordinates of (0.30, 0.31). The band-edge (~400-450 nm) to trap-state (~550-750 nm) emissions was tuned by controlling the Se/S ratio, and the different shades of white light were obtained. Furthermore, the quantum yield and CIE coordinates of the CdSexSy nanocrystals (Se/S = 0.4) were found to be similar even after 30 days of fabrication, showing the high stability of nanocrystals. The white light emission was retained in nanocrystals-embedded poly(methyl methacrylate) (PMMA) thin film and also in the hydrogel matrix. The one-pot, low-cost, scalable fabrication of white light emitting CdSexSy nanocrystals demonstrated in the present study offers promising scope in the solid-state display applications. <br>

scholarly journals White Light Emission by Simultaneous One Pot Encapsulation of Dyes into One-Dimensional Channelled Aluminophosphate

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1173
Author(s):  
Rebeca Sola-Llano ◽  
Ainhoa Oliden-Sánchez ◽  
Almudena Alfayate ◽  
Luis Gómez-Hortigüela ◽  
Joaquín Pérez-Pariente ◽  
...  
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Light Emission ◽  
Resonance Energy ◽  
Fluorescence Decay ◽  
White Light Emission ◽  
Electromagnetic Spectrum ◽  
Transfer Energy ◽  
One Pot ◽  
One Dimensional

By simultaneous occlusion of rationally chosen dyes, emitting in the blue, green and red region of the electromagnetic spectrum, into the one-dimensional channels of a magnesium-aluminophosphate with AEL-zeolitic type structure, MgAPO-11, a solid-state system with efficient white light emission under UV excitation, was achieved. The dyes herein selected—acridine (AC), pyronin Y (PY), and hemicyanine LDS722—ensure overall a good match between their molecular sizes and the MgAPO-11 channel dimensions. The occlusion was carried out via the crystallization inclusion method, in a suitable proportion of the three dyes to render efficient white fluorescence systems by means of fine-tuned FRET (fluorescence resonance energy transfer) energy transfer processes. The FRET processes are thoroughly examined by the analysis of fluorescence decay traces using the femtosecond fluorescence up-conversion technique.

All in One: Stimuli-Responsive, Efficient Mitotracking, and Single Source White Light Emission

2021 ◽  
Vol 12 (4) ◽  
pp. 1162-1168
Author(s):  
Bibhisan Roy ◽  
Mallu Chenna Reddy ◽  
Gregor P. Jose ◽  
Felix C. Niemeyer ◽  
Jens Voskuhl ◽  
...  
Keyword(s):  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Single Source ◽  
Stimuli Responsive

scholarly journals White-light emission from a single heavy atom-free molecule with room temperature phosphorescence, mechanochromism and thermochromism

2017 ◽  
Vol 8 (3) ◽  
pp. 1909-1914 ◽  
Author(s):  
Bingjia Xu ◽  
Haozhong Wu ◽  
Junru Chen ◽  
Zhan Yang ◽  
Zhiyong Yang ◽  
...  
Keyword(s):  
White Light ◽  
Room Temperature ◽  
Light Emission ◽  
Heavy Atom ◽  
White Light Emission ◽  
Free Molecule ◽  
Stimuli Responsive ◽  
Room Temperature Phosphorescence ◽  
Dual Emission ◽  
Light Emitting

Two heavy atom-free white-light emitting luminophores exhibit fluorescence–phosphorescence dual-emission and are multi-stimuli responsive at room temperature.

Tunable Single‐Molecule White‐Light Emission in Stimuli‐Responsive Hydrogel

2020 ◽  
Vol 8 (6) ◽  
pp. 1901571 ◽  
Author(s):  
Jie Wang ◽  
Fu Tang ◽  
Yue Wang ◽  
Shuqi Liu ◽  
Lidong Li
Keyword(s):  
Single Molecule ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Stimuli Responsive

scholarly journals Single-Component White Light Emitting CdSexSy Alloy Nanocrystals Through Phosphine-Free Route

2020 ◽  
Author(s):  
Shilpi Jaiswal ◽  
Jyotsana Pathak ◽  
Abhijit Patra
Keyword(s):  
Quantum Yield ◽  
White Light ◽  
Light Emission ◽  
Semiconductor Nanocrystals ◽  
White Light Emission ◽  
Molar Ratio ◽  
Visible Range ◽  
One Pot ◽  
Light Emitting ◽  
Hydrogel Matrix

Semiconductor nanocrystals are promising for display and lighting devices. Herein, we report a facile one-pot synthetic route to fabricate white light emitting CdSexSy nanocrystals with enhanced quantum yield using CdO, S powder, and Se powder as precursors. The phosphine-free route was adopted, employing paraffin oil as the reducing agent and solvent for the fabrication. The optical properties can be effectively tailored by controlling the reaction time and the molar ratio of Se/S. The emission of pristine CdSexSy nanocrystals covered a broad visible range from 400 to 750 nm. The CdSexSy nanocrystals (Se/S = 0.4) exhibited white-light emission with quantum yield of 50 ± 3 % and Commission Internationale de l'Eclairage (CIE) chromaticity coordinates of (0.30, 0.31). The band-edge (~400-450 nm) to trap-state (~550-750 nm) emissions was tuned by controlling the Se/S ratio, and the different shades of white light were obtained. Furthermore, the quantum yield and CIE coordinates of the CdSexSy nanocrystals (Se/S = 0.4) were found to be similar even after 30 days of fabrication, showing the high stability of nanocrystals. The white light emission was retained in nanocrystals-embedded poly(methyl methacrylate) (PMMA) thin film and also in the hydrogel matrix. The one-pot, low-cost, scalable fabrication of white light emitting CdSexSy nanocrystals demonstrated in the present study offers promising scope in the solid-state display applications. <br>

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