Efficient long lifetime room temperature phosphorescence of carbon dots in a potash alum matrix

2015 ◽  
Vol 3 (12) ◽  
pp. 2798-2801 ◽  
Author(s):  
Xinwei Dong ◽  
Liangming Wei ◽  
Yanjie Su ◽  
Zhongli Li ◽  
Huijuan Geng ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Composite Powders ◽  
Carbon Dot ◽  
Long Lifetime

Carbon dot composite powders show long phosphorescence lifetimes when the carbon dots are dispersed into a potash alum matrix.

Highly Efficient Carbon Dots Based Room-Temperature Fluorescence–Phosphorescence Dual Emitter

2021 ◽  
Author(s):  
Biao Zhao ◽  
Runnan Yu ◽  
Kunxiang Xu ◽  
Chao Zou ◽  
Huanyu Ma ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Carbon Dot ◽  
Highly Efficient ◽  
Huge Challenge

Carbon dot (CD)-based room temperature phosphorescence nanomaterials are currently drawing enormous attention. However, constructing fluorescence–phosphorescence dual emissive CDs (FP-CDs) is still a huge challenge due to the limited preparation strategies....

Room temperature phosphorescence from moisture-resistant and oxygen-barred carbon dot aggregates

2017 ◽  
Vol 5 (25) ◽  
pp. 6243-6250 ◽  
Author(s):  
Yonghao Chen ◽  
Jiangling He ◽  
Chaofan Hu ◽  
Haoran Zhang ◽  
Bingfu Lei ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Carbon Dot ◽  
Moisture Resistant

Aggregation-induced room temperature phosphorescence of carbon dots was first found and the relevant mechanism was investigated.

scholarly journals Ultralong lifetime and efficient room temperature phosphorescent carbon dots through multi-confinement structure design

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuqiong Sun ◽  
Shuting Liu ◽  
Luyi Sun ◽  
Shuangshuang Wu ◽  
Guangqi Hu ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Carbon Dots ◽  
Room Temperature ◽  
Structure Design ◽  
Room Temperature Phosphorescence ◽  
Long Lifetime ◽  
Optical Applications ◽  
Triplet Excited States ◽  
Exceptional Stability ◽  
Harsh Conditions

Abstract Room temperature phosphorescence materials have inspired extensive attention owing to their great potential in optical applications. However, it is hard to achieve a room temperature phosphorescence material with simultaneous long lifetime and high phosphorescence quantum efficiency. Herein, multi-confined carbon dots were designed and fabricated, enabling room temperature phosphorescence material with simultaneous ultralong lifetime, high phosphorescence quantum efficiency, and excellent stability. The multi-confinement by a highly rigid network, stable covalent bonding, and 3D spatial restriction efficiently rigidified the triplet excited states of carbon dots from non-radiative deactivation. The as-designed multi-confined carbon dots exhibit ultralong lifetime of 5.72 s, phosphorescence quantum efficiency of 26.36%, and exceptional stability against strong oxidants, acids and bases, as well as polar solvents. This work provides design principles and a universal strategy to construct metal-free room temperature phosphorescence materials with ultralong lifetime, high phosphorescence quantum efficiency, and high stability for promising applications, especially under harsh conditions.

Boron nitride dots In-situ embedded in a B2O3 matrix with the long lifetime Room-Temperature phosphorescence in dry and wet states

2021 ◽  
Vol 417 ◽  
pp. 129175
Author(s):  
Shenghui Han ◽  
Gang Lian ◽  
Xu Zhang ◽  
Zhaozhen Cao ◽  
Qilong Wang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Long Lifetime

Long lifetime phosphorescence and X-ray scintillation of chlorobismuthate hybrids incorporating ionic liquid cations

2021 ◽  
Author(s):  
Jian-Ce Jin ◽  
Yang-Peng Lin ◽  
Yi-Heng Wu ◽  
Liaokuo Gong ◽  
Nan-Nan Shen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
X Ray ◽  
Long Lifetime

Two chlorobismuthate hybrids incorportating ionic liquid cations (ILCs) with second-level room-temperature phosphorescence (RTP) were obtained, namely [Emim]BiCl4(bp2do) (1) and [Emmim]BiCl4(bp2do) (2) (Emim = 1-ethyl-3-methylimidazolium, Emmim = 1-ethyl-2,3-dimethylimidazolium, bp2do = 2,2'-bipyridyl-1,1'-dioxide)....

scholarly journals A Facile Co-crystallization Approach to Fabricate Two-component Carbon Dots Composites Showing Time-Dependent Evolutive Room Temperature Phosphorescence Colors

2021 ◽  
Author(s):  
Jian Qu ◽  
Xin Zhang ◽  
Zhong-Jie Wang ◽  
Shuyan Zhang ◽  
Yejian Yu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Room Temperature ◽  
Data Encryption ◽  
Time Dependent ◽  
Security Level ◽  
Room Temperature Phosphorescence ◽  
Two Component ◽  
Carbon Based

Time-dependent evolutive afterglow materials can increase the security level by providing additional encryption modes in anti-counterfeiting and data encryption. The design of carbon-based materials with dynamic afterglow colors is attractive...

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