The hydrogen-bonding properties of a room temperature phosphorescence cellulose substrate

1986 ◽  
Vol 90 (21) ◽  
pp. 4941-4945 ◽  
Author(s):  
Georg W. Suter ◽  
Alan J. Kallir ◽  
Urs P. Wild ◽  
Tuan Vo-Dinh
Keyword(s):  
Hydrogen Bonding ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Cellulose Substrate ◽  
Bonding Properties

High pH-induced efficient room-temperature phosphorescence from carbon dots in hydrogen-bonded matrices

2018 ◽  
Vol 6 (29) ◽  
pp. 7890-7895 ◽  
Author(s):  
Jing Tan ◽  
Yunxia Ye ◽  
Xudong Ren ◽  
Wei Zhao ◽  
Dongmei Yue
Keyword(s):  
Hydrogen Bonding ◽  
Carbon Dots ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
High Ph ◽  
Bonding Structure ◽  
New Strategy ◽  
Hydrogen Bonded

A new strategy for efficient RTP from CDs by engineering the conjugation degree and controlling the hydrogen-bonding structure is proposed.

Hydrogen bonding boosted the persistent room temperature phosphorescence of pure organic compounds for multiple applications

2019 ◽  
Vol 7 (29) ◽  
pp. 9095-9101 ◽  
Author(s):  
Tingting Zhang ◽  
Heqi Gao ◽  
Anqi Lv ◽  
Ziyi Wang ◽  
Yongyang Gong ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Organic Compounds ◽  
Room Temperature ◽  
Room Temperature Phosphorescence

Pure organic compounds with p-RTP efficiency being enhanced through hydrogen bonding could be fabricated into nanoparticles forin vivoimaging.

Direct white-light emitting room-temperature-phosphorescence thin films with tunable two-color polarized emission through orientational hydrogen-bonding layer-by-layer assembly

2018 ◽  
Vol 6 (16) ◽  
pp. 4444-4449 ◽  
Author(s):  
Rui Gao ◽  
Xiaoyu Fang ◽  
Dongpeng Yan
Keyword(s):  
Thin Films ◽  
Hydrogen Bonding ◽  
White Light ◽  
Room Temperature ◽  
Bonding Layer ◽  
Layer By Layer ◽  
Room Temperature Phosphorescence ◽  
Light Emitting ◽  
Polarized Emission ◽  
Layer Assembly

Molecule-based room-temperature-phosphorescence (RTP) materials have received much attention recently.

DNA Inspirited Rational Construction of Nonconventional Luminophores with Efficient and Color-Tunable Afterglow

2020 ◽  
Author(s):  
Yunzhong Wang ◽  
Saixing Tang ◽  
Yating Wen ◽  
Shuyuan Zheng ◽  
Bing Yang ◽  
...  
Keyword(s):  
Rational Design ◽  
Room Temperature ◽  
Double Helix ◽  
Mechanical Grinding ◽  
Room Temperature Phosphorescence ◽  
Color Tunable ◽  
Potential Applications ◽  
Rational Construction ◽  
Double Helix Structure ◽  
Made In

<div>Persistent room-temperature phosphorescence (p-RTP) from pure organics is attractive </div><div>due to its fundamental importance and potential applications in molecular imaging, </div><div>sensing, encryption, anticounterfeiting, etc.1-4 Recently, efforts have been also made in </div><div>obtaining color-tunable p-RTP in aromatic phosphors5 and nonconjugated polymers6,7. </div><div>The origin of color-tunable p-RTP and the rational design of such luminogens, </div><div>particularly those with explicit structure and molecular packing, remain challenging. </div><div>Noteworthily, nonconventional luminophores without significant conjugations generally </div><div>possess excitation-dependent photoluminescence (PL) because of the coexistence of </div><div>diverse clustered chromophores6,8, which strongly implicates the possibility to achieve </div><div>color-tunable p-RTP from their molecular crystals assisted by effective intermolecular </div><div>interactions. Here, inspirited by the highly stable double-helix structure and multiple </div><div>hydrogen bonds in DNA, we reported a series of nonconventional luminophores based on </div><div>hydantoin (HA), which demonstrate excitation-dependent PL and color-tunable p-RTP </div><div>from sky-blue to yellowish-green, accompanying unprecedentedly high PL and p-RTP </div><div>efficiencies of up to 87.5% and 21.8%, respectively. Meanwhile, the p-RTP emissions are </div><div>resistant to vigorous mechanical grinding, with lifetimes of up to 1.74 s. Such robust, </div><div>color-tunable and highly efficient p-RTP render the luminophores promising for varying </div><div>applications. These findings provide mechanism insights into the origin of color-tunable </div><div>p-RTP, and surely advance the exploitation of efficient nonconventional luminophores.</div>

Clustering-Triggered Efficient Room Temperature Phosphorescence from Nonconventional Luminophores

2019 ◽  
Author(s):  
Shuyuan Zheng ◽  
Taiping Hu ◽  
Xin Bin ◽  
Yunzhong Wang ◽  
Yuanping Yi ◽  
...  
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Spin Orbit Coupling ◽  
Design Rationale ◽  
Emission Mechanism ◽  
Room Temperature Phosphorescence ◽  
Electronic Interactions ◽  
Energy Gaps ◽  
Theoretical Results

Pure organic room temperature phosphorescence (RTP) and luminescence from nonconventional luminophores have gained increasing attention. However, it remains challenging to achieve efficient RTP from unorthodox luminophores, on account of the unsophisticated understanding of the emission mechanism. Here we propose a strategy to realize efficient RTP in nonconventional luminophores through incorporation of lone pairs together with clustering and effective electronic interactions. The former promotes spin-orbit coupling and boost the consequent intersystem crossing, whereas the latter narrows energy gaps and stabilizes the triplets, thus synergistically affording remarkable RTP. Experimental and theoretical results of urea and its derivatives verify the design rationale. Remarkably, RTP from thiourea solids with unprecedentedly high efficiency of up to 24.5% is obtained. Further control experiments testify the crucial role of through-space delocalization on the emission. These results would spur the future fabrication of nonconventional phosphors, and moreover should advance understanding of the underlying emission mechanism.<br>

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