A Rapidly Self-Healing Supramolecular Polymer Hydrogel with Photostimulated Room-Temperature Phosphorescence Responsiveness

2014 ◽  
Vol 126 (51) ◽  
pp. 14373-14376 ◽  
Author(s):  
Hui Chen ◽  
Xiang Ma ◽  
Shuaifan Wu ◽  
He Tian
Keyword(s):  
Room Temperature ◽  
Supramolecular Polymer ◽  
Self Healing ◽  
Room Temperature Phosphorescence ◽  
Polymer Hydrogel

scholarly journals Tough Supramolecular Polymer Networks with Extreme Stretchability and Fast Room-Temperature Self-Healing

2017 ◽  
Vol 29 (22) ◽  
pp. 1605325 ◽  
Author(s):  
Ji Liu ◽  
Cindy Soo Yun Tan ◽  
Ziyi Yu ◽  
Nan Li ◽  
Chris Abell ◽  
...  
Keyword(s):  
Room Temperature ◽  
Polymer Networks ◽  
Supramolecular Polymer ◽  
Self Healing

scholarly journals Ultralong purely organic aqueous phosphorescence supramolecular polymer for targeted tumor cell imaging

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Wei-Lei Zhou ◽  
Yong Chen ◽  
Qilin Yu ◽  
Haoyang Zhang ◽  
Zhi-Xue Liu ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Quantum Yield ◽  
Tumor Targeting ◽  
Room Temperature ◽  
Cell Imaging ◽  
Linear Array ◽  
Water Soluble ◽  
Supramolecular Polymer ◽  
Room Temperature Phosphorescence ◽  
Multiple Hydrogen Bonds

Abstract Purely organic room-temperature phosphorescence has attracted attention for bioimaging but can be quenched in aqueous systems. Here we report a water-soluble ultralong organic room-temperature phosphorescent supramolecular polymer by combining cucurbit[n]uril (CB[7], CB[8]) and hyaluronic acid (HA) as a tumor-targeting ligand conjugated to a 4-(4-bromophenyl)pyridin-1-ium bromide (BrBP) phosphor. The result shows that CB[7] mediated pseudorotaxane polymer CB[7]/HA–BrBP changes from small spherical aggregates to a linear array, whereas complexation with CB[8] results in biaxial pseudorotaxane polymer CB[8]/HA–BrBP which transforms to relatively large aggregates. Owing to the more stable 1:2 inclusion complex between CB[8] and BrBP and the multiple hydrogen bonds, this supramolecular polymer has ultralong purely organic RTP lifetime in water up to 4.33 ms with a quantum yield of 7.58%. Benefiting from the targeting property of HA, this supramolecular polymer is successfully applied for cancer cell targeted phosphorescence imaging of mitochondria.

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 A crystalline supramolecular polymer with self-healing capability at room temperature

2013 ◽  
Vol 45 (9) ◽  
pp. 955-961 ◽  
Author(s):  
Nobuhiro Oya ◽  
Tabito Ikezaki ◽  
Naoko Yoshie
Keyword(s):  
Room Temperature ◽  
Supramolecular Polymer ◽  
Self Healing

A rapidly self-healing supramolecular polymer hydrogel

2015 ◽  
Vol 58 (3) ◽  
pp. 436-437 ◽  
Author(s):  
Xiaofan Ji ◽  
Feihe Huang
Keyword(s):  
Supramolecular Polymer ◽  
Self Healing ◽  
Polymer Hydrogel

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>

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