Achieving Long Lifetime of Pure Organic Room-temperature Phosphorescence via Constructing Hydrogen-bonded Organic Frameworks

Two chlorobismuthate hybrids incorportating ionic liquid cations (ILCs) with second-level room-temperature phosphorescence (RTP) were obtained, namely [Emim]BiCl4(bp2do) (1) and [Emmim]BiCl4(bp2do) (2) (Emim = 1-ethyl-3-methylimidazolium, Emmim = 1-ethyl-2,3-dimethylimidazolium, bp2do = 2,2'-bipyridyl-1,1'-dioxide)....

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Hydrogen-Bonded Two-Component Ionic Crystals Showing Enhanced Long-Lived Room-Temperature Phosphorescence via TADF-Assisted Förster Resonance Energy Transfer

Advanced Functional Materials ◽

10.1002/adfm.201807599 ◽

2018 ◽

Vol 29 (4) ◽

pp. 1807599 ◽

Cited By ~ 81

Author(s):

Bo Zhou ◽

Dongpeng Yan

Keyword(s):

Energy Transfer ◽

Room Temperature ◽

Resonance Energy Transfer ◽

Resonance Energy ◽

Förster Resonance Energy Transfer ◽

Ionic Crystals ◽

Room Temperature Phosphorescence ◽

Two Component ◽

Förster Resonance ◽

Hydrogen Bonded

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Lifetime-tunable room-temperature phosphorescence of polyaniline carbon dots in adjustable polymer matrices

Nanoscale ◽

10.1039/c9nr05561d ◽

2019 ◽

Vol 11 (39) ◽

pp. 18311-18319 ◽

Cited By ~ 8

Author(s):

Huilin Gou ◽

Yanfeng Liu ◽

Guiyang Zhang ◽

Qiaobo Liao ◽

Xin Huang ◽

...

Keyword(s):

Carbon Dots ◽

Room Temperature ◽

Data Encryption ◽

Polymer Matrices ◽

Room Temperature Phosphorescence ◽

Time Resolved ◽

Hydrogen Bonded

A series of room-temperature composites were synthesized by embedding polyaniline carbon dots in hydrogen-bonded polymer matrices. Adjustable RTP lifetime are realized, enabling time-resolved anti-counterfeit and data encryption patterns.

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Highly Efficient Heavy Atom Free Room Temperature Phosphorescence by Host-Guest Doping

Frontiers in Chemistry ◽

10.3389/fchem.2021.781294 ◽

2021 ◽

Vol 9 ◽

Author(s):

Jinzhu Cao ◽

Meng Zhang ◽

Manjeet Singh ◽

Zhongfu An ◽

Lingfei Ji ◽

...

Keyword(s):

Quantum Efficiency ◽

Room Temperature ◽

Heavy Atom ◽

Molar Ratio ◽

Ambient Conditions ◽

Room Temperature Phosphorescence ◽

Highly Efficient ◽

Long Lifetime ◽

Remarkable Progress

Recently, there has been remarkable progress of the host-guest doped pure organic room-temperature phosphorescence (RTP) materials. However, it remains a great challenge to develop highly efficient host-guest doping systems. In this study, we have successfully developed a heavy atom free pure organic molecular doped system (benzophenone-thianthrene, respectively) with efficient RTP through a simple host-guest doping strategy. Furthermore, by optimizing the doping ratios, the host-guest material with a molar ratio of 100:1 presented an efficient RTP emission with 46% quantum efficiency and a long lifetime of up to 9.17 ms under ambient conditions. This work will provide an effective way to design new organic doping systems with RTP.

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Efficient long lifetime room temperature phosphorescence of carbon dots in a potash alum matrix

Journal of Materials Chemistry C ◽

10.1039/c5tc00126a ◽

2015 ◽

Vol 3 (12) ◽

pp. 2798-2801 ◽

Cited By ~ 76

Author(s):

Xinwei Dong ◽

Liangming Wei ◽

Yanjie Su ◽

Zhongli Li ◽

Huijuan Geng ◽

...

Keyword(s):

Carbon Dots ◽

Room Temperature ◽

Room Temperature Phosphorescence ◽

Composite Powders ◽

Carbon Dot ◽

Long Lifetime

Carbon dot composite powders show long phosphorescence lifetimes when the carbon dots are dispersed into a potash alum matrix.

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Siloxy Group-Induced Highly Efficient Room Temperature Phosphorescence with Long Lifetime

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.6b03276 ◽

2016 ◽

Vol 120 (21) ◽

pp. 11631-11639 ◽

Cited By ~ 56

Author(s):

Masaki Shimizu ◽

Ryosuke Shigitani ◽

Masaki Nakatani ◽

Keiko Kuwabara ◽

Yusuke Miyake ◽

...

Keyword(s):

Room Temperature ◽

Room Temperature Phosphorescence ◽

Highly Efficient ◽

Long Lifetime

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Guest-host doped strategy for constructing ultralong-lifetime near-infrared organic phosphorescence materials for bioimaging

Nature Communications ◽

10.1038/s41467-021-27914-0 ◽

2022 ◽

Vol 13 (1) ◽

Author(s):

Fuming Xiao ◽

Heqi Gao ◽

Yunxiang Lei ◽

Wenbo Dai ◽

Miaochang Liu ◽

...

Keyword(s):

Room Temperature ◽

Near Infrared ◽

Tumor Imaging ◽

Energy Gap ◽

Radiative Transition ◽

Room Temperature Phosphorescence ◽

Triplet Energy ◽

Long Wavelength ◽

Long Lifetime ◽

First Time

AbstractOrganic near-infrared room temperature phosphorescence materials have unparalleled advantages in bioimaging due to their excellent penetrability. However, limited by the energy gap law, the near-infrared phosphorescence materials (>650 nm) are very rare, moreover, the phosphorescence lifetimes of these materials are very short. In this work, we have obtained organic room temperature phosphorescence materials with long wavelengths (600/657–681/732 nm) and long lifetimes (102–324 ms) for the first time through the guest-host doped strategy. The guest molecule has sufficient conjugation to reduce the lowest triplet energy level and the host assists the guest in exciton transfer and inhibits the non-radiative transition of guest excitons. These materials exhibit good tissue penetration in bioimaging. Thanks to the characteristic of long lifetime and long wavelength emissive phosphorescence materials, the tumor imaging in living mice with a signal to background ratio value as high as 43 is successfully realized. This work provides a practical solution for the construction of organic phosphorescence materials with both long wavelengths and long lifetimes.

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