Achieving tunable dual-emissive and high-contrast mechanochromic materials by manipulating steric hindrance effects

2019 ◽  
Vol 7 (11) ◽  
pp. 3300-3305 ◽  
Author(s):  
Zongliang Xie ◽  
Tongtong Su ◽  
Eethamukkala Ubba ◽  
Huangjun Deng ◽  
Zhu Mao ◽  
...  

A rational strategy for the design and synthesis of tunable dual-emissive and single-component white-light-emitting materials by manipulating steric hindrance effects.

2016 ◽  
Vol 60 ◽  
pp. 196-203 ◽  
Author(s):  
Pingchuan Ma ◽  
Yanhua Song ◽  
Ye Sheng ◽  
Bo Yuan ◽  
Hongxia Guan ◽  
...  

2021 ◽  
Vol 10 (1) ◽  
pp. 465-477
Author(s):  
Longshi Rao ◽  
Qing Zhang ◽  
Mingfu Wen ◽  
Zhongfa Mao ◽  
Huaxian Wei ◽  
...  

Abstract White light-emitting diodes (WLEDs) hold great promise in lighting, display, and visible light communication devices, and single-component white emission carbon quantum dots (SCWE-CQDs) as the key component of WLEDs have many outstanding advantages. However, rapid and efficient synthesis of SCWE-CQDs with high photoluminescence quantum yield (PLQY) and stability remains challenging. Here, we report a novel solvent engineering strategy to obtain highly photoluminescent SCWE-CQDs by controlling the dilution ratios between N,N-dimethylformamide (DMF) and pristine red carbon quantum dots (RCQDs) solution. By optimizing synthesis conditions, the relative PLQY of the SCWE-CQDs solution reached 53%. Morphological, structural, and optical property characterizations indicate that the combined action of the hydrogen bond (HB) effect and the size effect leads to the blue shift of RCQDs, but the HB effect is more dominant than the particle size in causing large spectral shifts. In addition, the WLEDs with high color rendering index of 89 and remarkable reliability were obtained based on the highly photoluminescent SCWE-CQDs. This facile solvent engineering approach for synthesizing tunable emission CQDs will promote the progress of carbon-based luminescent materials for applications in optoelectronic devices.


2021 ◽  
Vol 57 (77) ◽  
pp. 9890-9893
Author(s):  
Qiu-Qin Huang ◽  
Mei-Yue Hu ◽  
Yan-Li Li ◽  
Nan-Nan Chen ◽  
Yi Li ◽  
...  

Ultra-small tri/tetra-nuclear copper nanoclusters (Cu3/Cu4) exhibit ultrabright phosphorescence emission (Фem = 71.8 and 63.5%). Cu3 is firstly applied as a single component phosphor for white light-emitting diodes with favourable characteristics.


2020 ◽  
Vol 30 (33) ◽  
pp. 1906830 ◽  
Author(s):  
Elisa Fresta ◽  
Jacopo Dosso ◽  
Juan Cabanillas‐González ◽  
Davide Bonifazi ◽  
Rubén D. Costa

2017 ◽  
Vol 100 (7) ◽  
pp. 3050-3060 ◽  
Author(s):  
Ruiyu Mi ◽  
Yan-gai Liu ◽  
Lefu Mei ◽  
Chenglong Zhao ◽  
Jian Chen ◽  
...  

Nanoscale ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 4826-4832 ◽  
Author(s):  
Ping He ◽  
Yuxin Shi ◽  
Ting Meng ◽  
Ting Yuan ◽  
Yunchao Li ◽  
...  

In this mini review, we update the latest research in the design of high-performance WLEDs with different correlated color temperatures by tuning the red component using red emissive CQDs and single-component white emissive CQDs.


2019 ◽  
Vol 7 (45) ◽  
pp. 14320-14333 ◽  
Author(s):  
An Xing ◽  
Xuepei Miao ◽  
Tuan Liu ◽  
Haoran Yang ◽  
Yan Meng ◽  
...  

An intrinsic white-light-emitting single-component hyperbranched polyimide has been reported for the first time.


2020 ◽  
Vol 8 (25) ◽  
pp. 8643-8653 ◽  
Author(s):  
Rachna Devi ◽  
Kasturi Singh ◽  
Sivakumar Vaidyanathan

Due to their structural flexibility and easy solution process capability, single-component white light-emitting pure organo-lanthanide complexes have been considered as promising candidates for solid-state lighting.


2019 ◽  
Vol 200 (1) ◽  
pp. 199-207 ◽  
Author(s):  
Linping Wang ◽  
Haiying Du ◽  
Youxi Wang ◽  
Mei Wang ◽  
Zhili Tian

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