Tuning of luminescence color of π-conjugated liquid crystals through co-assembly with ionic liquids

2017 ◽  
Vol 5 (38) ◽  
pp. 9972-9978 ◽  
Author(s):  
Masato Mitani ◽  
Masafumi Yoshio ◽  
Takashi Kato
Keyword(s):  
Ionic Liquids ◽  
Charge Transfer ◽  
Liquid Crystals ◽  
Intramolecular Charge Transfer ◽  
Supramolecular Assembly ◽  
Luminescence Color

Excited intramolecular charge transfer states affect luminescence color of the supramolecular assembly formed by amphiphilic liquid crystals and ionic liquids.

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.

Characteristics of Intramolecular Charge Transfer by J-Aggregates in Merocyanine Dye LB Films

2016 ◽  
Vol 16 (6) ◽  
pp. 6322-6326
Author(s):  
Chang Heon Yang ◽  
Young-Soo Kwon ◽  
Hoon-Kyu Shin
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Lb Films ◽  
J Aggregates

Steric Effects on Intramolecular Charge Transfer Fluorescence of Benzo[b]thiophene-1,1-dioxide Bridged Macrocages

2021 ◽  
Author(s):  
Keita Nobuhara ◽  
Yusuke Inagaki ◽  
Wataru Setaka
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Fluorescence Properties ◽  
Steric Effects ◽  
Sensor Molecules

Intramolecular charge transfer (ICT) fluorescence has been widely investigated and exploited in sensor molecules. However, steric effects on the ICT fluorescence properties have rarely been reported so far, although research...

scholarly journals Ion conformation and orientational order in a dicationic ionic liquid crystal studied by solid-state nuclear magnetic resonance spectroscopy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Debashis Majhi ◽  
Sergey V. Dvinskikh
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Crystals ◽  
Bond Order ◽  
Van Der Waals ◽  
Orientational Order ◽  
Smectic Phase ◽  
Side Chains ◽  
Dicationic Ionic Liquid ◽  
Ionic Liquid Crystals

AbstractIonic liquids crystals belong to a special class of ionic liquids that exhibit thermotropic liquid-crystalline behavior. Recently, dicationic ionic liquid crystals have been reported with a cation containing two single-charged ions covalently linked by a spacer. In ionic liquid crystals, electrostatic and hydrogen bonding interactions in ionic sublayer and van der Waals interaction in hydrophobic domains are the main forces contributing to the mesophase stabilization and determining the molecular orientational order and conformation. How these properties in dicationic materials are compared to those in conventional monocationic analogs? We address this question using a combination of advanced NMR methods and DFT analysis. Dicationic salt 3,3′-(1,6-hexanediyl)bis(1-dodecylimidazolium)dibromide was studied. Local bond order parameters of flexible alkyl side chains, linker chain, and alignment of rigid polar groups were analyzed. The dynamic spacer effectively “decouples” the motion of two ionic moieties. Hence, local order and alignment in dicationic mesophase were similar to those in analogous single-chain monocationic salts. Bond order parameters in the side chains in the dicationic smectic phase were found consistently lower compared to double-chain monocationic analogs, suggesting decreasing contribution of van der Waals forces. Overall dication reorientation in the smectic phase was characterized by low values of orientational order parameter S. With increased interaction energy in the polar domain the layered structure is stabilized despite less ordered dications. The results emphasized the trends in the orientational order in ionic liquid crystals and contributed to a better understanding of interparticle interactions driving smectic assembly in this and analogous ionic mesogens.

scholarly journals Counterion Migration Driven by Light-Induced Intramolecular Charge Transfer

JACS Au ◽  
2021 ◽  
Author(s):  
Ta-Chun Lin ◽  
Zong-Ying Liu ◽  
Shih-Hung Liu ◽  
Igor O. Koshevoy ◽  
Pi-Tai Chou
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer

Photo-Induced Partially Aromatized Intramolecular Charge Transfer

2021 ◽  
Author(s):  
Angel H. Romero ◽  
Ivan E. Romero ◽  
Oscar E. Piro ◽  
Gustavo A. Echeverría ◽  
Lourdes A. Gotopo ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer
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