Boosting Humidity Resistance of Nonconventional Luminogens with Room Temperature Phosphorescence via Enhancing Strength of Hydrogen Bonds

2021 ◽  
Author(s):  
Yide Meng ◽  
Song Guo ◽  
Bingli Jiang ◽  
Xiaofeng Zhang ◽  
Linmin Zou ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Room Temperature ◽  
Effective Strategy ◽  
Room Temperature Phosphorescence ◽  
Humidity Resistance ◽  
Highly Effective

Organic room temperature phosphorescence (RTP) has drawn great attention owing to their promising applications in various fields. Hydrogen bonds (H-bonds) engineering has proven to be a highly effective strategy to...

scholarly journals Phenylphosphonate surface functionalisation of MgMn2O4 with 3D open-channel nanostructures for composite slurry-coated cathodes of rechargeable magnesium batteries operated at room temperature

RSC Advances ◽  
2021 ◽  
Vol 11 (31) ◽  
pp. 19076-19082
Author(s):  
Koichi Kajihara ◽  
Daisuke Takahashi ◽  
Hiroaki Kobayashi ◽  
Toshihiko Mandai ◽  
Hiroaki Imai ◽  
...  
Keyword(s):  
Room Temperature ◽  
Open Channel ◽  
Active Material ◽  
Effective Strategy ◽  
Highly Effective ◽  
Surface Functionalisation ◽  
Magnesium Batteries ◽  
Rechargeable Magnesium Batteries ◽  
Composite Slurry

Phenylphosphonate functionalisation is an easy, highly effective strategy to fabricate slurry-coated nanostructured MgMn2O4 cathodes for rechargeable magnesium batteries at active material fractions up to 93 wt% for rechargeable magnesium batteries cycled at 25 °C.

scholarly journals Engender Persistent Organic Room-Temperature Phosphorescence by Trace Ingredient Incorporation

2020 ◽  
Author(s):  
Bingbing Ding ◽  
Liangwei Ma ◽  
Zizhao Huang ◽  
Xiang Ma ◽  
He Tian
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Light Emission ◽  
Structure Characterization ◽  
Structure Identification ◽  
Effective Strategy ◽  
Room Temperature Phosphorescence ◽  
Trace Impurities ◽  
Dual Emission

<p>The trace impurities in pure organic phosphors were always ignored because the ultra-low content impurities were considered to hardly affect the luminescent properties. Evidences from corresponding reports and research have shown that impurities may greatly affect room temperature phosphorescence (RTP) in some crystalline compounds. To date, very few literatures have clearly study the role of impurities in RTP because of the difficulty in the separation and structure identification of impurities. Also no reports have focused on utilizing trace impurities to form new strategies for efficient RTP.</p> <p>For the first time, an impurity was isolated from 1-(4-bromophenyl)-1<i>H</i>-imidazole (1BBI) and structural identified, which was proved to be the key to RTP in 1BBI crystal. Neither purified impurity nor 1BBI matrix shown any detectable RTP. The impurity could light up the unusual ultralong RTP in matrix even at <b>0.01 mol%</b> content. Inspired by impurity/matrix phosphorescence, a trace-ingredient-mediated bicomponent strategy was introduced for high phosphorescence quantum yield (QY, up to 74.2%) and extralong lifetime (up to 430 ms).</p><p><b>Research Highlights of this work are including</b></p><p><b>1. </b><b>The study of impurities in organic luminescent materials, including phosphorescent materials, is rarely reported due to the great difficulty of separation, purification</b><b> and structure characterization. This work not only separated, purified and structure identified the trace impurity in the system but also confirmed the fact that the impurity engenders the RTP. And the corresponding mechanism was proposed as well.</b></p><p><b>2. </b><b>Inspired by the role of impurities in RTP, this work proposed an effective strategy for the design and preparation of persistent organic RTP based on active ingredient incorporation. Seven compounds were screened out to conduct the bicomponent RTP system and achieved bright RTP with high QY (up to 74.2%) and extra-long lifetime (up to 430 ms)) RTP with tunable colors.</b></p><p><b>3. </b><b>Combining the dual emission of blue fluorescence and yellow phosphorescence, a bicomponent system achieved a bright white-light emission, which shows its outstanding application potential.</b></p><p> The design concept and strategy of this work supplies an efficient approach to develop RTP by simply mixing the matrix with a trace amount of active ingredients. And the trace-ingredient-mediated bicomponent system is preferred for its high efficiency, color-tunable, low cost and easy to prepare properties, which will make important sense for facilely developing organic persistent RTP materials. This work will not only lead to a new understanding of persistent organic RTP but also develop a facile and effective strategy for RTP afterglow materials.<br></p>

scholarly journals Engender Persistent Organic Room-Temperature Phosphorescence by Trace Ingredient Incorporation

2020 ◽  
Author(s):  
Bingbing Ding ◽  
Liangwei Ma ◽  
Zizhao Huang ◽  
Xiang Ma ◽  
He Tian
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Light Emission ◽  
Structure Characterization ◽  
Structure Identification ◽  
Effective Strategy ◽  
Room Temperature Phosphorescence ◽  
Trace Impurities ◽  
Dual Emission

<p>The trace impurities in pure organic phosphors were always ignored because the ultra-low content impurities were considered to hardly affect the luminescent properties. Evidences from corresponding reports and research have shown that impurities may greatly affect room temperature phosphorescence (RTP) in some crystalline compounds. To date, very few literatures have clearly study the role of impurities in RTP because of the difficulty in the separation and structure identification of impurities. Also no reports have focused on utilizing trace impurities to form new strategies for efficient RTP.</p> <p>For the first time, an impurity was isolated from 1-(4-bromophenyl)-1<i>H</i>-imidazole (1BBI) and structural identified, which was proved to be the key to RTP in 1BBI crystal. Neither purified impurity nor 1BBI matrix shown any detectable RTP. The impurity could light up the unusual ultralong RTP in matrix even at <b>0.01 mol%</b> content. Inspired by impurity/matrix phosphorescence, a trace-ingredient-mediated bicomponent strategy was introduced for high phosphorescence quantum yield (QY, up to 74.2%) and extralong lifetime (up to 430 ms).</p><p><b>Research Highlights of this work are including</b></p><p><b>1. </b><b>The study of impurities in organic luminescent materials, including phosphorescent materials, is rarely reported due to the great difficulty of separation, purification</b><b> and structure characterization. This work not only separated, purified and structure identified the trace impurity in the system but also confirmed the fact that the impurity engenders the RTP. And the corresponding mechanism was proposed as well.</b></p><p><b>2. </b><b>Inspired by the role of impurities in RTP, this work proposed an effective strategy for the design and preparation of persistent organic RTP based on active ingredient incorporation. Seven compounds were screened out to conduct the bicomponent RTP system and achieved bright RTP with high QY (up to 74.2%) and extra-long lifetime (up to 430 ms)) RTP with tunable colors.</b></p><p><b>3. </b><b>Combining the dual emission of blue fluorescence and yellow phosphorescence, a bicomponent system achieved a bright white-light emission, which shows its outstanding application potential.</b></p><p> The design concept and strategy of this work supplies an efficient approach to develop RTP by simply mixing the matrix with a trace amount of active ingredients. And the trace-ingredient-mediated bicomponent system is preferred for its high efficiency, color-tunable, low cost and easy to prepare properties, which will make important sense for facilely developing organic persistent RTP materials. This work will not only lead to a new understanding of persistent organic RTP but also develop a facile and effective strategy for RTP afterglow materials.<br></p>

scholarly journals Highly efficient room-temperature phosphorescence and afterglow luminescence from common organic fluorophores in 2D hybrid perovskites

2018 ◽  
Vol 9 (48) ◽  
pp. 8975-8981 ◽  
Author(s):  
Shuming Yang ◽  
Duobin Wu ◽  
Wenjing Gong ◽  
Qiuqin Huang ◽  
Hongyu Zhen ◽  
...  
Keyword(s):  
Room Temperature ◽  
Effective Strategy ◽  
Room Temperature Phosphorescence ◽  
Organic Fluorophores ◽  
Highly Efficient ◽  
Solution Processable

A simple and effective strategy on producing solution-processable materials with highly efficient and persistent room-temperature-phosphorescence (RTP) is presented here.

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>

scholarly journals Tipping the Balance with the Aid of Stoichiometry: Room Temperature Phosphorescence versus Fluorescence in Organic Cocrystals

2015 ◽  
Vol 15 (4) ◽  
pp. 2039-2045 ◽  
Author(s):  
Simone d’Agostino ◽  
Fabrizia Grepioni ◽  
Dario Braga ◽  
Barbara Ventura
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence

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)....

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