Hydrogen Bonding-Induced Morphology Dependence of Long-Lived Organic Room-Temperature Phosphorescence: A Computational Study

2019 ◽  
Vol 10 (21) ◽  
pp. 6948-6954 ◽  
Author(s):  
Huili Ma ◽  
Hongde Yu ◽  
Qian Peng ◽  
Zhongfu An ◽  
Dong Wang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Room Temperature ◽  
Computational Study ◽  
Room Temperature Phosphorescence

The hydrogen-bonding properties of a room temperature phosphorescence cellulose substrate

1986 ◽  
Vol 90 (21) ◽  
pp. 4941-4945 ◽  
Author(s):  
Georg W. Suter ◽  
Alan J. Kallir ◽  
Urs P. Wild ◽  
Tuan Vo-Dinh
Keyword(s):  
Hydrogen Bonding ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Cellulose Substrate ◽  
Bonding Properties

scholarly journals A simple and effective preparation of quercetin pentamethyl ether from quercetin

2018 ◽  
Vol 14 ◽  
pp. 3112-3121 ◽  
Author(s):  
Jin Tatsuzaki ◽  
Tomohiko Ohwada ◽  
Yuko Otani ◽  
Reiko Inagi ◽  
Tsutomu Ishikawa
Keyword(s):  
Hydrogen Bonding ◽  
Dimethyl Sulfoxide ◽  
Room Temperature ◽  
Computational Study ◽  
Dimethyl Sulfate ◽  
Intramolecular Hydrogen Bonding ◽  
Single Product ◽  
Oh Groups ◽  
Methylation Product ◽  
Intramolecular Hydrogen

Among the five hydroxy (OH) groups of quercetin (3,5,7,3',4'-pentahydroxyflavone), the OH group at 5 position is the most resistant to methylation due to its strong intramolecular hydrogen bonding with the carbonyl group at 4 position. Thus, it is generally difficult to synthesize the pentamethyl ether efficiently by conventional methylation. Here, we describe a simple and effective per-O-methylation of quercetin with dimethyl sulfate in potassium (or sodium) hydroxide/dimethyl sulfoxide at room temperature for about 2 hours, affording quercetin pentamethyl ether (QPE) quantitatively as a single product. When methyl iodide was used in place of dimethyl sulfate, the C-methylation product 6-methylquercetin pentamethyl ether was also formed. A computational study provided a rationale for the experimental results.

High pH-induced efficient room-temperature phosphorescence from carbon dots in hydrogen-bonded matrices

2018 ◽  
Vol 6 (29) ◽  
pp. 7890-7895 ◽  
Author(s):  
Jing Tan ◽  
Yunxia Ye ◽  
Xudong Ren ◽  
Wei Zhao ◽  
Dongmei Yue
Keyword(s):  
Hydrogen Bonding ◽  
Carbon Dots ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
High Ph ◽  
Bonding Structure ◽  
New Strategy ◽  
Hydrogen Bonded

A new strategy for efficient RTP from CDs by engineering the conjugation degree and controlling the hydrogen-bonding structure is proposed.

Hydrogen bonding boosted the persistent room temperature phosphorescence of pure organic compounds for multiple applications

2019 ◽  
Vol 7 (29) ◽  
pp. 9095-9101 ◽  
Author(s):  
Tingting Zhang ◽  
Heqi Gao ◽  
Anqi Lv ◽  
Ziyi Wang ◽  
Yongyang Gong ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Organic Compounds ◽  
Room Temperature ◽  
Room Temperature Phosphorescence

Pure organic compounds with p-RTP efficiency being enhanced through hydrogen bonding could be fabricated into nanoparticles forin vivoimaging.

Unveiling the mechanisms of organic room temperature phospho-rescence in various surrounding environments: a computational study

2021 ◽  
Author(s):  
Anchong Zhao ◽  
Xiulan Wu ◽  
Xin Jiang ◽  
Jingran Gao ◽  
Jian Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Organic Materials ◽  
Computational Study ◽  
Photophysical Properties ◽  
Next Generation ◽  
Room Temperature Phosphorescence

Room-temperature phosphorescence (RTP) from pure organic materials has been prom-ising in the next-generation OLEDs. Understanding of the photophysical properties of RTP molecules is attractive but challenging. In this study, through...

Direct white-light emitting room-temperature-phosphorescence thin films with tunable two-color polarized emission through orientational hydrogen-bonding layer-by-layer assembly

2018 ◽  
Vol 6 (16) ◽  
pp. 4444-4449 ◽  
Author(s):  
Rui Gao ◽  
Xiaoyu Fang ◽  
Dongpeng Yan
Keyword(s):  
Thin Films ◽  
Hydrogen Bonding ◽  
White Light ◽  
Room Temperature ◽  
Bonding Layer ◽  
Layer By Layer ◽  
Room Temperature Phosphorescence ◽  
Light Emitting ◽  
Polarized Emission ◽  
Layer Assembly

Molecule-based room-temperature-phosphorescence (RTP) materials have received much attention recently.

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>

Sign in / Sign up

Export Citation Format

Share Document