Room temperature phosphorescence of 4-bromo-1,8-naphthalic anhydride derivative-based polyacrylamide copolymer with photo-stimulated responsiveness

2016 ◽  
Vol 7 (24) ◽  
pp. 3989-3992 ◽  
Author(s):  
Hui Chen ◽  
Lei Xu ◽  
Xiang Ma ◽  
He Tian
Keyword(s):  
Room Temperature ◽  
The Other ◽  
Room Temperature Phosphorescence ◽  
Naphthalic Anhydride ◽  
Phosphorescence Emission ◽  
Anhydride Derivative

Room temperature phosphorescence emission was achieved by host–guest recognition between γ-cyclodextrin and a 4-bromo-1,8-naphthalic anhydride polymer, which can be controlled by the photo-isomerization of the azobenzene unit of the other polymer.

Pure room temperature phosphorescence emission of organic host-guest doped system with quantum efficiency of 64%

2021 ◽  
Author(s):  
Xiaoqing Liu ◽  
Wenbo Dai ◽  
Qian Junjie ◽  
Yunxiang Lei ◽  
Miaochang Liu ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Halogen Atoms ◽  
System P ◽  
Phosphorescence Emission

A new doped system with pure phosphorescent emission is constructed using four 1-(4-(diphenylamino)phenyl)-2-phenylethan-1-one derivatives containing halogen atoms as the guests and benzophenone as the host. That is, the doped system...

scholarly journals A room temperature phosphorescence encoding [2]rotaxane molecular shuttle

2016 ◽  
Vol 7 (7) ◽  
pp. 4582-4588 ◽  
Author(s):  
Xiang Ma ◽  
Jing Zhang ◽  
Jingjing Cao ◽  
Xuyang Yao ◽  
Tiantian Cao ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Acid Base ◽  
Phosphorescence Emission ◽  
Molecular Shuttle

The shuttling of an acid–base switchable bistable [2]rotaxane is addressed by room temperature phosphorescence emission signals.

scholarly journals Ultralong UV/mechano-excited room temperature phosphorescence from purely organic cluster excitons

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Xuepeng Zhang ◽  
Lili Du ◽  
Weijun Zhao ◽  
Zheng Zhao ◽  
Yu Xiong ◽  
...  
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Transient Absorption ◽  
Transient State ◽  
Exciton Model ◽  
Room Temperature Phosphorescence ◽  
Naphthalic Anhydride ◽  
Femtosecond Transient Absorption ◽  
Organic Solid ◽  
Absorption Studies

AbstractPurely organic room temperature phosphorescence (RTP) has attracted wide attention recently due to its various application potentials. However, ultralong RTP (URTP) with high efficiency is still rarely achieved. Herein, by dissolving 1,8-naphthalic anhydride in certain organic solid hosts, URTP with a lifetime of over 600 ms and overall quantum yield of over 20% is realized. Meanwhile, the URTP can also be achieved by mechanical excitation when the host is mechanoluminescent. Femtosecond transient absorption studies reveal that intersystem crossing of the host is accelerated substantially in the presence of a trace amount of 1,8-naphthalic anhydride. Accordingly, we propose that a cluster exciton spanning the host and guest forms as a transient state before the guest acts as an energy trap for the RTP state. The cluster exciton model proposed here is expected to help expand the varieties of purely organic URTP materials based on an advanced understanding of guest/host combinations.

Cool white, persistent room-temperature phosphorescence in carbon dots embedded in a silica gel matrix

2017 ◽  
Vol 19 (23) ◽  
pp. 15137-15144 ◽  
Author(s):  
Julin Joseph ◽  
Aji A. Anappara
Keyword(s):  
Silica Gel ◽  
Carbon Dots ◽  
Room Temperature ◽  
Room Temperature Phosphorescence ◽  
Phosphorescence Emission

Cool white room temperature phosphorescence emission of carbon dots embedded in a silica gel matrix.

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