Photo-facilitated aggregation and correlated color temperature adjustment of single component organic solid state white-light emitting materials

2015 ◽  
Vol 3 (17) ◽  
pp. 4563-4569 ◽  
Author(s):  
Cheng Chen ◽  
Xu-Hui Jin ◽  
Xue-Jun Zhou ◽  
Li-Xuan Cai ◽  
Ya-Jun Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Single Component ◽  
Color Temperature ◽  
Dual Emission ◽  
Light Emitting ◽  
Organic Solid

A pyridinium derivative with photo-facilitated aggregation and intra-/intermolecular charge transfer synergy-induced dual emission has been presented. The correlated color temperature tunable white-light emission can be realized in different states.

Single-component solid state white-light emission and photoluminescence color tuning of a Cd(ii) complex and its application as a luminescence thermometer

2019 ◽  
Vol 7 (43) ◽  
pp. 13454-13460 ◽  
Author(s):  
Jinling Miao ◽  
Yong Nie ◽  
Yexin Li ◽  
Chengyuan Qin ◽  
Yifan Ren ◽  
...  
Keyword(s):  
Solid State ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Single Component ◽  
Color Temperature ◽  
Color Tuning ◽  
Light Emitting

A single-component white-light emitting Cd(ii) complex exhibits tunable photoluminescence and acts as a novel luminescence thermometer based on the correlation between temperature and color temperature.

Single-component small-molecule white light organic phosphors

2017 ◽  
Vol 53 (66) ◽  
pp. 9269-9272 ◽  
Author(s):  
Ning-Ning Zhang ◽  
Cai Sun ◽  
Xiao-Ming Jiang ◽  
Xiu-Shuang Xing ◽  
Yong Yan ◽  
...  
Keyword(s):  
Solid State ◽  
Small Molecule ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Single Component ◽  
Supramolecular Aggregate ◽  
Organic Phosphors

A family of two small and easily synthesizable 1,2,3-triazole molecules with intrinsic white-light-emission in the solid state has been reported. The white light is assigned to the supramolecular aggregate emission (SAE) that is unusual for single-component white light phosphors.

Towards white-light emission of fluorescent polymeric nanoparticles with a single luminogen possessing AIE and TICT properties

2020 ◽  
Vol 8 (2) ◽  
pp. 734-741 ◽  
Author(s):  
Yaxin Hu ◽  
Xiaoqin Liang ◽  
Dongliang Wu ◽  
Bang Yu ◽  
Yijia Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
White Light ◽  
Light Emission ◽  
Intramolecular Charge Transfer ◽  
Polymeric Nanoparticles ◽  
White Light Emission ◽  
Twisted Intramolecular Charge Transfer ◽  
Light Emitting ◽  
Transfer Properties

White-light-emitting AIE-PNPs were facilely and efficiently prepared through miniemulsion copolymerization by using an AIE luminogen with twisted intramolecular charge transfer properties as a single emitting component.

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.

scholarly journals A Facile Approach to Solid-State White Emissive Carbon Dots and Their Application in UV-Excitable and Single-Component-Based White LEDs

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 725 ◽  
Author(s):  
Xiangyu Feng ◽  
Kai Jiang ◽  
Haibo Zeng ◽  
Hengwei Lin
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
White Light ◽  
Carbon Dots ◽  
High Energy ◽  
Single Component ◽  
Color Temperature ◽  
Great Promise ◽  
Light Emitting ◽  
Material Sources

Large-scale applications of conventional rare-earth phosphors in white light-emitting diodes (W-LEDs) are restricted by the non-renewable raw material sources and high energy consumption during the production process. Recently, carbon dots (CDs) have been proposed as promising alternatives to rare-earth phosphors and present bright prospects in white lighting. However, the use of CDs in W-LEDs still has two major obstacles, i.e., solid-state quenching and lack of single-component white emissive products. In this work, a facile, rapid, and scalable method for the preparation of solid-state white emissive CDs (W-CDs) is reported via microwave-irradiation heating of L-aspartic acid (AA) in the presence of ammonia. The W-CDs exhibit blue photoluminescence (PL) in dilute aqueous dispersion and their emission spectra gradually broaden (emerging new emissions at orange-yellow regions) with concentration increases. Interestingly, the W-CDs powder displays a very broad PL spectrum covering nearly the whole visible-light region under ultraviolet (UV) excitation, which is responsible for the observed white emission. Further studies revealed that the self-quenching-resistance feature of the W-CDs is probably due to a covering of polymer-like structures on their surface, thus avoiding the close contact of nanoparticles with each other. PL emission of the W-CDs is reasonably ascribed to a cross-linked enhanced effect (CEE) of the sub-fluorophores contained in the material (e.g., –NH2 and C=O). Finally, applications of the W-CDs in fabricating single-component-based W-LEDs using commercially available UV chips were attempted and shown to exhibit satisfactory performances including high white light-emitting purity, high color rendering index (CRI), and tunable correlated color temperature (CCT), thus rendering great promise for W-CDs in the field of white lighting.

Pure white light emission and charge transfer in organogels of symmetrical and unsymmetrical π-chromophoric oligo-p-(phenyleneethynylene) bola-amphiphiles

2018 ◽  
Vol 54 (3) ◽  
pp. 275-278 ◽  
Author(s):  
Syamantak Roy ◽  
Debabrata Samanta ◽  
Pramod Kumar ◽  
Tapas Kumar Maji
Keyword(s):  
Charge Transfer ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Light Emitting ◽  
Gelation Behavior ◽  
Solution Processable ◽  
Pure White

The gelation behavior of two novel π-chromophoric bola-amphiphiles has been studied and solution processable pure white light emitting and CT gels have been realized.

scholarly journals Electronic structure and luminescence assets in white-light emitting Ca2V2O7, Sr2V2O7 and Ba2V2O7 pyro-vanadates: X-ray absorption spectroscopy investigations

RSC Advances ◽  
2018 ◽  
Vol 8 (46) ◽  
pp. 26423-26431 ◽  
Author(s):  
Aditya Sharma ◽  
Mayora Varshney ◽  
Keun-Hwa Chae ◽  
Sung Ok Won
Keyword(s):  
Electronic Structure ◽  
Charge Transfer ◽  
Absorption Spectroscopy ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Light Emitting ◽  
X Ray ◽  
Charge Transfer Transitions ◽  
X Ray Absorption

Chemically synthesized pyro-vanadates exhibit sub-pentavalent V ions and white-light emission via charge transfer transitions of VO4 tetrahedra.

Luminescence tuning of the Dy–Zn metal–organic framework and its application in the detection of Fe(iii) ions

2016 ◽  
Vol 4 (19) ◽  
pp. 4211-4217 ◽  
Author(s):  
Yu-Fei Li ◽  
Dan Wang ◽  
Zhuang Liao ◽  
Yang Kang ◽  
Wei-Hua Ding ◽  
...  
Keyword(s):  
Metal Ions ◽  
White Light ◽  
Light Emission ◽  
Metal Organic Framework ◽  
White Light Emission ◽  
Single Component ◽  
Light Emitting ◽  
Metal Organic ◽  
Design And Application ◽  
Organic Framework

A single-component Dy–Zn MOF with white-light emission was used to detect Fe(iii) with the combination of f–f transitions and ligand-based emission, which provides a platform for the design and application of the white-light emitting materials and chemosensors for metal ions.

Tunable white-light emission via energy transfer in single-phase LiGd(WO4)2:Re3+ (Re = Tm, Tb, Dy, Eu) phosphors for UV-excited WLEDs

RSC Advances ◽  
2015 ◽  
Vol 5 (117) ◽  
pp. 96272-96280 ◽  
Author(s):  
Yang Zhang ◽  
Weitao Gong ◽  
Jingjie Yu ◽  
Yuan Lin ◽  
Guiling Ning
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
White Light ◽  
Solid State Reaction ◽  
Single Phase ◽  
Light Emission ◽  
White Light Emission ◽  
Energy Transfer Mechanism ◽  
Photoluminescence Properties ◽  
Light Emitting

Novel single-phase white-light-emitting phosphors have been successfully synthesized by a solid-state reaction and their photoluminescence properties and energy transfer mechanism have been carefully investigated.

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