Two‐Coordinate Copper(I)/NHC Complexes: Dual Emission Properties and Ultralong Room‐Temperature Phosphorescence

2020 ◽  
Vol 59 (21) ◽  
pp. 8210-8217 ◽  
Author(s):  
Jiayi Li ◽  
Liding Wang ◽  
Zifeng Zhao ◽  
Xiaoyue Li ◽  
Xiao Yu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Dual Emission ◽  
Emission Properties

Two‐Coordinate Copper(I)/NHC Complexes: Dual Emission Properties and Ultralong Room‐Temperature Phosphorescence

2020 ◽  
Vol 132 (21) ◽  
pp. 8287-8294 ◽  
Author(s):  
Jiayi Li ◽  
Liding Wang ◽  
Zifeng Zhao ◽  
Xiaoyue Li ◽  
Xiao Yu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Dual Emission ◽  
Emission Properties

scholarly journals Stable and color tunable emission properties based on non-cyclometalated gold(iii) complexes

2015 ◽  
Vol 44 (21) ◽  
pp. 10003-10013 ◽  
Author(s):  
Michael Bachmann ◽  
Olivier Blacque ◽  
Koushik Venkatesan
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Emission Properties ◽  
Color Tunable ◽  
Tunable Emission

Room temperature phosphorescence based on non-cyclometalated gold(iii) complexes with readily tunable emission properties is demonstrated.

Eight Cd(ii) coordination polymers with persistent room-temperature phosphorescence: intriguing dual emission and time-resolved afterglow modulation

2020 ◽  
Vol 7 (3) ◽  
pp. 777-785 ◽  
Author(s):  
Yajie Li ◽  
Tianyu Gai ◽  
Yuejin Lin ◽  
Wenjing Zhang ◽  
Kai Li ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Dual Emission ◽  
Time Resolved

A new series of p-RTP CPs 1–8 were designed and successfully synthesized; 5–8, in particular, exhibited intriguing time-resolved afterglow modulation.

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 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>

Molecular Conformation Modulating Luminescence Switching between Delayed Fluorescence and Room-Temperature Phosphorescence

2021 ◽  
Author(s):  
Yating Wen ◽  
Shengbing Xiao ◽  
Haichao Liu ◽  
Xuzhou Tian ◽  
jianbo De ◽  
...  
Keyword(s):  
Room Temperature ◽  
Molecular Conformation ◽  
Delayed Fluorescence ◽  
Acceptor Molecule ◽  
Room Temperature Phosphorescence ◽  
Dual Emission ◽  
Near Ultraviolet ◽  
Donor Acceptor

A new pure organic donor-acceptor molecule, (4-chlorophenyl)(5H-dibenzo[b,f]azepin-5-yl)methanone (IS-CBZ) was designed and synthesized, which demonstrates near ultraviolet (NUV) delayed fluorescence (DF) and dual emission of NUV DF and yellow room-temperature phosphorescence...

One-step synthesis of cyclic compounds towards easy room-temperature phosphorescence and deep blue thermally activated delayed fluorescence

2018 ◽  
Vol 54 (56) ◽  
pp. 7850-7853 ◽  
Author(s):  
Yingyuan Hu ◽  
Zhenfeng Wang ◽  
Xiaofang Jiang ◽  
Xinyi Cai ◽  
Shi-Jian Su ◽  
...  
Keyword(s):  
Room Temperature ◽  
Delayed Fluorescence ◽  
Room Temperature Phosphorescence ◽  
One Pot ◽  
Dual Emission ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Deep Blue ◽  
One Step ◽  
Cyclic Compounds

Novel cyclic compounds were synthesized by one-pot synthesis and THF-irrigating purification with deep blue thermally activated delayed fluorescence and room-temperature phosphorescence dual emission.

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