scholarly journals Self-Healing Amorphous Polymers with Room-Temperature Phosphorescence Enabled by Boron-Based Dative Bonds

2019 ◽  
Vol 2 (2) ◽  
pp. 699-705 ◽  
Author(s):  
Qi Wu ◽  
Hui Xiong ◽  
Yong Zhu ◽  
Xiancheng Ren ◽  
Lin-Lin Chu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Amorphous Polymers ◽  
Self Healing ◽  
Room Temperature Phosphorescence

scholarly journals Enabling long-lived organic room temperature phosphorescence in polymers by subunit interlocking

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Suzhi Cai ◽  
Huili Ma ◽  
Huifang Shi ◽  
He Wang ◽  
Xuan Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Amorphous Polymers ◽  
Fundamental Principle ◽  
Polymer Materials ◽  
Excitation Wavelength ◽  
Ambient Conditions ◽  
Room Temperature Phosphorescence ◽  
Optical Phenomenon ◽  
Formidable Challenge ◽  
Set Up

Abstract Long-lived room temperature phosphorescence (LRTP) is an attractive optical phenomenon in organic electronics and photonics. Despite the rapid advance, it is still a formidable challenge to explore a universal approach to obtain LRTP in amorphous polymers. Based on the traditional polyethylene derivatives, we herein present a facile and concise chemical strategy to achieve ultralong phosphorescence in polymers by ionic bonding cross-linking. Impressively, a record LRTP lifetime of up to 2.1 s in amorphous polymers under ambient conditions is set up. Moreover, multicolor long-lived phosphorescent emission can be procured by tuning the excitation wavelength in single-component polymer materials. These results outline a fundamental principle for the construction of polymer materials with LRTP, endowing traditional polymers with fresh features for potential applications.

scholarly journals A facile way to obtain near-infrared room-temperature phosphorescent soft materials based on Bodipy dyes

2020 ◽  
Vol 11 (2) ◽  
pp. 482-487 ◽  
Author(s):  
Ting Zhang ◽  
Xiang Ma ◽  
He Tian
Keyword(s):  
Hydrogen Bond ◽  
Room Temperature ◽  
Near Infrared ◽  
Soft Materials ◽  
Amorphous Polymers ◽  
The Self ◽  
Room Temperature Phosphorescence ◽  
Quadruple Hydrogen Bond

Near-infrared room-temperature phosphorescence was achieved by employing iodine substituted Bodipy into amorphous polymers. The self-healable gels were also obtained with the incorporation of a crosslinker and quadruple hydrogen bond based moieties.

Autonomous self-healing polyisoprene elastomers with high modulus and good toughness based on the synergy of dynamic ionic crosslinks and highly disordered crystals

2020 ◽  
Vol 11 (41) ◽  
pp. 6549-6558
Author(s):  
Yohei Miwa ◽  
Mayu Yamada ◽  
Yu Shinke ◽  
Shoichi Kutsumizu
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Self Healing ◽  
High Modulus ◽  
Disordered Crystals ◽  
Ionic Crosslinks

We designed a novel polyisoprene elastomer with high mechanical properties and autonomous self-healing capability at room temperature facilitated by the coexistence of dynamic ionic crosslinks and crystalline components that slowly reassembled.

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
Sign in / Sign up

Export Citation Format

Share Document