scholarly journals Room temperature phosphorescence from a guest molecule confined in the restrictive space of an organic–inorganic supramolecular assembly

2016 ◽  
Vol 15 (8) ◽  
pp. 959-963 ◽  
Author(s):  
Yohei Ishida ◽  
Tetsuya Shimada ◽  
Elamparuthi Ramasamy ◽  
Vaidhyanathan Ramamurthy ◽  
Shinsuke Takagi
Keyword(s):  
Room Temperature ◽  
Guest Molecule ◽  
Supramolecular Assembly ◽  
Oxygen Quenching ◽  
Room Temperature Phosphorescence ◽  
Guest Molecules ◽  
Effective Suppression

Supramolecular double walls composed of organic capsules and inorganic nanosheets realized stable room-temperature phosphorescence of enclosed guest molecules due to the effective suppression of oxygen quenching.

scholarly journals Multivalent Supramolecular Assembly with Ultralong Organic Room Temperature Phosphorescence, High Transfer Efficiency and Ultrahigh Antenna Effect in Water

2021 ◽  
Author(s):  
Wei-Lei Zhou ◽  
Wenjing Lin ◽  
Yong Chen ◽  
Xian-Yin Dai ◽  
Zhixue Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Cell Imaging ◽  
Supramolecular Assembly ◽  
Soft Materials ◽  
Transfer Efficiency ◽  
Room Temperature Phosphorescence ◽  
Antenna Effect

Multivalent supramolecular assembly has recently attracted extensive attention in the application of soft materials and cell imaging. Here we report a novel multivalent supramolecular assembly constructed by 4-(4-bromophenyl)pyridine-1-ium bromide modified...

Intense Room-Temperature Phosphorescence of 1-Bromonaphthalene in Organized Media of Beta-Cyclodextrin and Triton X-100

1996 ◽  
Vol 50 (10) ◽  
pp. 1273-1276 ◽  
Author(s):  
Xin-Zhen Du ◽  
Yong Zhang ◽  
Xian-Zhi Huang ◽  
Yun-Bao Jiang ◽  
Yao-Qun Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ternary Complex ◽  
Room Temperature ◽  
Guest Molecule ◽  
Head Group ◽  
Polar Head Group ◽  
Room Temperature Phosphorescence ◽  
Beta Cyclodextrin ◽  
Organized Media ◽  
Triton X

In aerated aqueous solution, intense room-temperature phosphorescence (RTP) of 1-bromonaphthalene (1-BrN) is observed with an host–guest inclusion complex composed of Triton X-100, 1-BrN, and beta-cyclodextrin (β-CD). Triton X-100 is incorporated into the hydrophobic cavity of β-CD as the second guest molecule, and a 1:1:1 ternary complex is formed. This complex, with a polar head group, can be well distributed in aqueous solution, and stable RTP is obtained. Ethanol further enhances the RTP of the ternary complex, whereas 1-propanol and 1-butanol greatly attenuate RTP. Spectral analyses indicate that 1-BrN in the β-CD cavity is replaced by 1-propanol and 1-butanol.

Elimination of moisture and oxygen quenching in room-temperature phosphorescence

1980 ◽  
Vol 52 (14) ◽  
pp. 2443-2444 ◽  
Author(s):  
David L. McAleese ◽  
Richard S. Freedlander ◽  
R. Bruce. Dunlap
Keyword(s):  
Room Temperature ◽  
Oxygen Quenching ◽  
Room Temperature Phosphorescence

Color-Tunable Aqueous Room-Temperature Phosphorescence Supramolecular Assembly

2021 ◽  
Vol 13 (12) ◽  
pp. 14407-14416
Author(s):  
Yuchen Deng ◽  
Peng Li ◽  
Jiatong Li ◽  
Daolai Sun ◽  
Huanrong Li
Keyword(s):  
Room Temperature ◽  
Supramolecular Assembly ◽  
Room Temperature Phosphorescence ◽  
Color Tunable

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>

Sign in / Sign up

Export Citation Format

Share Document