Chiral Macrocycle Induced Circularly Polarized Luminescence of a Twisted Intramolecular Charge Transfer Dye

2021 ◽  
Author(s):  
Tiejun Li ◽  
Hao Guo ◽  
Yuan Wang ◽  
Guanghui Ouyang ◽  
Qi-Qiang Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Twisted Intramolecular Charge Transfer ◽  
Circularly Polarized ◽  
Guest Binding ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

The host-guest binding between a chiral macrocycle and an achiral dye could suppress the twisted intramolecular charge transfer (TICT) process, leading to enhanced emission and bright circularly polarized luminescence from...

scholarly journals Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Junfeng Li ◽  
Chenxi Hou ◽  
Chao Huang ◽  
Shanqi Xu ◽  
Xuelei Peng ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Rational Design ◽  
Intramolecular Charge Transfer ◽  
Molecular Engineering ◽  
Twisted Intramolecular Charge Transfer ◽  
Single Crystalline ◽  
Circularly Polarized ◽  
Conjugated Systems ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Realizing a high luminescence dissymmetry factor (glum) is a paramount yet challenging issue in the research field of circularly polarized luminescence (CPL). Here, we reported a novel set of organic conjugated systems with twisted intramolecular charge transfer (TICT) characteristics based on conjugated o-carborane-binaphthyl dyads composing of binaphthyl units as chiral electron donors and o-carborane units as achiral electron acceptors, demonstrating intense CPL with large glum values. Interestingly, single-crystalline o-1 exhibited a high-level brightness and a large glum factor as high as +0.13, whereas single-crystalline o-2 processed a relatively low brightness with a decreased glum value to -0.04. The significant diversity of CPL-active properties was triggered by the selective introduction of o-carborane units onto the binaphthyl units. Benefiting from the large magnetic dipole transition moments in TICT states, the CPL activity of TICT o-carborane-based materials exhibited amplified circular polarization. This study provides an efficient molecular engineering strategy for the rational design and development of highly efficient CPL-active materials.

scholarly journals Axial and helical thermally activated delayed fluorescence bicarbazole emitters: Opposite modulation of circularly polarized luminescence through intramolecular charge-transfer dynamics

2021 ◽  
Author(s):  
Patthira Sumsalee ◽  
Laura Abella ◽  
Thierry Roisnel ◽  
Sabrina Lebrequier ◽  
Gregory Pieters ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Circularly Polarized ◽  
Thermally Activated ◽  
High Interest ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Charge Transfer Dynamics

The rationalization of the molecular parameters that influences the intensity and sign of circularly polarized luminescence (CPL) for chiral emitters is a challenging task and remains of high interest for...

Enhanced Circularly Polarized Luminescence in Emissive Charge‐Transfer Complexes

2019 ◽  
Vol 131 (21) ◽  
pp. 7087-7093 ◽  
Author(s):  
Jianlei Han ◽  
Dong Yang ◽  
Xue Jin ◽  
Yuqian Jiang ◽  
Minghua Liu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complexes ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Azabora[5]helicene Charge-Transfer Dyes Show Efficient and Spectrally Variable Circularly Polarized Luminescence

2018 ◽  
Vol 24 (48) ◽  
pp. 12660-12668 ◽  
Author(s):  
Zoe Domínguez ◽  
Rocío López-Rodríguez ◽  
Eleuterio Álvarez ◽  
Sergio Abbate ◽  
Giovanna Longhi ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Enhanced Circularly Polarized Luminescence in Emissive Charge‐Transfer Complexes

2019 ◽  
Vol 58 (21) ◽  
pp. 7013-7019 ◽  
Author(s):  
Jianlei Han ◽  
Dong Yang ◽  
Xue Jin ◽  
Yuqian Jiang ◽  
Minghua Liu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complexes ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Dynamic adjustment of emission from both singlets and triplets: the role of excited state conformation relaxation and charge transfer in phenothiazine derivates

2021 ◽  
Author(s):  
Weidong Qiu ◽  
Xinyi Cai ◽  
Mengke Li ◽  
Liangying Wang ◽  
Yanmei He ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dynamic Adjustment ◽  
Twisted Intramolecular Charge Transfer

Dynamic adjustment of emission behaviours by controlling the extent of twisted intramolecular charge transfer character in excited state.

Circularly polarized luminescence spectroscopy

1977 ◽  
Vol 77 (6) ◽  
pp. 773-792 ◽  
Author(s):  
Frederick S. Richardson ◽  
James P. Riehl
Keyword(s):  
Luminescence Spectroscopy ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence
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