scholarly journals Crystallization-induced room-temperature phosphorescence in fumaramides

CrystEngComm ◽  
2020 ◽  
Vol 22 (45) ◽  
pp. 7782-7785
Author(s):  
Andrea Nitti ◽  
Chiara Botta ◽  
Alessandra Forni ◽  
Elena Cariati ◽  
Elena Lucenti ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Molecular Design ◽  
Halogen Bonding ◽  
Room Temperature Phosphorescence

Novel fumaramides exhibit room-temperature phosphorescence in the solid state once molecular design and positioning of the carbonyl and bromine atoms allow for the formation of strong intermolecular halogen bonding interactions.

scholarly journals The Importance of Molecular Motion to Luminescence in Solid State

2020 ◽  
Author(s):  
Yujie Tu ◽  
Junkai Liu ◽  
Xuepeng Zhang ◽  
Tsz Shing Cheung ◽  
Xuewen He ◽  
...  
Keyword(s):  
Solid State ◽  
Photothermal Therapy ◽  
Room Temperature ◽  
Molecular Motion ◽  
Molecular Design ◽  
Acid Group ◽  
Carboxylic Acid Group ◽  
Room Temperature Phosphorescence ◽  
Model Compounds ◽  
Substituted Benzoic Acids

<div>Molecular motion is often considered detrimental to luminescence because it favors nonradiative decay. However, nothing is absolute, and molecular motion can also do useful work if utilized properly. For example, photothermal therapy makes use of the heat generated in light irradiation for cancer treatment. To further explore the merits of molecular motion, ortho-substituted benzoic acids were used as model compounds to evaluate the importance of molecular motion to luminescence in the solid state. It is verified that the twisting of the carboxylic acid group can activate spin vibronic coupling to facilitate intersystem crossing to result in more efficient room temperature phosphorescence (RTP). A five-state model is established to understand the ISC process and an effective pre-twisted molecular design strategy is put forward for the development of efficient RTP materials.</div>

scholarly journals The Importance of Solid-state Molecular Motion to Luminescence in Solid State

2020 ◽  
Author(s):  
Yujie Tu ◽  
Junkai Liu ◽  
Xuepeng Zhang ◽  
Tsz Shing Cheung ◽  
Xuewen He ◽  
...  
Keyword(s):  
Solid State ◽  
Photothermal Therapy ◽  
Room Temperature ◽  
Molecular Motion ◽  
Molecular Design ◽  
Acid Group ◽  
Carboxylic Acid Group ◽  
Room Temperature Phosphorescence ◽  
Model Compounds ◽  
Substituted Benzoic Acids

<div>Molecular motion is often considered detrimental to luminescence because it favors nonradiative decay. However, nothing is absolute, and molecular motion can also do useful work if utilized properly. For example, photothermal therapy makes use of the heat generated in light irradiation for cancer treatment. To further explore the merits of molecular motion, ortho-substituted benzoic acids were used as model compounds to evaluate the importance of molecular motion to luminescence in the solid state. It is verified that the twisting of the carboxylic acid group can activate spin vibronic coupling to facilitate intersystem crossing to result in more efficient room temperature phosphorescence (RTP). A five-state model is established to understand the ISC process and an effective pre-twisted molecular design strategy is put forward for the development of efficient RTP materials.</div>

scholarly journals The Importance of Solid-state Molecular Motion to Room Temperature Phosphorescence

2020 ◽  
Author(s):  
Yujie Tu ◽  
Junkai Liu ◽  
Xuepeng Zhang ◽  
Tsz Shing Cheung ◽  
Xuewen He ◽  
...  
Keyword(s):  
Solid State ◽  
Photothermal Therapy ◽  
Room Temperature ◽  
Molecular Motion ◽  
Molecular Design ◽  
Acid Group ◽  
Carboxylic Acid Group ◽  
Room Temperature Phosphorescence ◽  
Model Compounds ◽  
Substituted Benzoic Acids

<div>Molecular motion is often considered detrimental to luminescence because it favors nonradiative decay. However, nothing is absolute, and molecular motion can also do useful work if utilized properly. For example, photothermal therapy makes use of the heat generated in light irradiation for cancer treatment. To further explore the merits of molecular motion, ortho-substituted benzoic acids were used as model compounds to evaluate the importance of molecular motion to luminescence in the solid state. It is verified that the twisting of the carboxylic acid group can activate spin vibronic coupling to facilitate intersystem crossing to result in more efficient room temperature phosphorescence (RTP). A five-state model is established to understand the ISC process and an effective pre-twisted molecular design strategy is put forward for the development of efficient RTP materials.</div>

scholarly journals The Importance of Solid-state Molecular Motion to Room Temperature Phosphorescence

2020 ◽  
Author(s):  
Yujie Tu ◽  
Junkai Liu ◽  
Xuepeng Zhang ◽  
Tsz Shing Cheung ◽  
Xuewen He ◽  
...  
Keyword(s):  
Solid State ◽  
Photothermal Therapy ◽  
Room Temperature ◽  
Molecular Motion ◽  
Molecular Design ◽  
Acid Group ◽  
Carboxylic Acid Group ◽  
Room Temperature Phosphorescence ◽  
Model Compounds ◽  
Substituted Benzoic Acids

<div>Molecular motion is often considered detrimental to luminescence because it favors nonradiative decay. However, nothing is absolute, and molecular motion can also do useful work if utilized properly. For example, photothermal therapy makes use of the heat generated in light irradiation for cancer treatment. To further explore the merits of molecular motion, ortho-substituted benzoic acids were used as model compounds to evaluate the importance of molecular motion to luminescence in the solid state. It is verified that the twisting of the carboxylic acid group can activate spin vibronic coupling to facilitate intersystem crossing to result in more efficient room temperature phosphorescence (RTP). A five-state model is established to understand the ISC process and an effective pre-twisted molecular design strategy is put forward for the development of efficient RTP materials.</div>

Water-soluble boron carbon oxynitride dots with excellent solid-state fluorescence and ultralong room-temperature phosphorescence

Nano Research ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3261-3267
Author(s):  
Shenghui Han ◽  
Gang Lian ◽  
Xiaoliang Zeng ◽  
Zhaozhen Cao ◽  
Qilong Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Water Soluble ◽  
Room Temperature Phosphorescence ◽  
Solid State Fluorescence ◽  
Boron Carbon

scholarly journals Ultralong Room‐Temperature Phosphorescence from Amorphous Polymer Poly(Styrene Sulfonic Acid) in Air in the Dry Solid State

2018 ◽  
Vol 28 (16) ◽  
pp. 1707369 ◽  
Author(s):  
Tomoki Ogoshi ◽  
Hiromu Tsuchida ◽  
Takahiro Kakuta ◽  
Tada‐aki Yamagishi ◽  
Ai Taema ◽  
...  
Keyword(s):  
Solid State ◽  
Sulfonic Acid ◽  
Room Temperature ◽  
Amorphous Polymer ◽  
Room Temperature Phosphorescence ◽  
Styrene Sulfonic Acid

scholarly journals Metal free room temperature phosphorescence from molecular self-interactions in the solid state

2018 ◽  
Vol 6 (17) ◽  
pp. 4603-4626 ◽  
Author(s):  
Alessandra Forni ◽  
Elena Lucenti ◽  
Chiara Botta ◽  
Elena Cariati
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Organic Materials ◽  
Environmental Load ◽  
Room Temperature Phosphorescence ◽  
Metal Free ◽  
Low Toxicity

Purely organic materials showing solid state room temperature phosphorescence (RTP) are receiving an ever growing interest due to their low toxicity, cost and environmental load compared to their organometallic counterparts.

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