scholarly journals Supramolecular solvatochromism. Effect of solvents on the self-assembly and charge transfer absorption characteristics of lipid-packaged, linear mixed-valence platinum complexes

2006 ◽  
Vol 7 (7) ◽  
pp. 629-634 ◽  
Author(s):  
K. Kuroiwa ◽  
N. Oda ◽  
N. Kimizuka
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Mixed Valence ◽  
Platinum Complexes ◽  
The Self ◽  
Effect Of Solvents ◽  
Absorption Characteristics

EFFECT OF LIPID-PACKAGING ON THE CHARGE TRANSFER CHARACTERISTICS OF ONE-DIMENSIONAL, MIXED-VALENCE PLATINUM COMPLEXES

2002 ◽  
Vol 01 (05n06) ◽  
pp. 391-395 ◽  
Author(s):  
CHANG-SOO LEE ◽  
YASUHIRO HATANAKA ◽  
NOBUO KIMIZUKA
Keyword(s):  
Charge Transfer ◽  
Mixed Valence ◽  
Platinum Complexes ◽  
Organic Media ◽  
One Dimensional ◽  
Transfer Characteristics ◽  
Absorption Characteristics

Lipid-packaged platinum complexes of [ Pt ( en )2][ Pt X2( en )2] (X= Cl , Br , I ) are newly synthesized and their morphology and charge transfer (CT) absorption characteristics are compared in organic media. They show remarkably red-shifted CT absorption characteristics, which are ascribed to the significantly promoted exciton delocalization along the chains.

scholarly journals Pyramidal Heteroanion-Directed and Reduced MoV-Driven Assembly of Multi-Layered Polyoxometalate Cages

2018 ◽  
Author(s):  
Qi Zheng, ◽  
Manuel Kupper ◽  
Weimin Xuan ◽  
Hirofumi Oki ◽  
Ryo Tsunashima ◽  
...  
Keyword(s):  
Self Assembly ◽  
Electronic Materials ◽  
Electronic Devices ◽  
Mixed Valence ◽  
The Self ◽  
Model Structure ◽  
Redox Titration ◽  
Metal Centers ◽  
Redox Active ◽  
Tetrabutyl Ammonium

The fabrication of redox-active polyoxometalates (POMs) that can switch between multiple states is critical for their application in electronic devices, yet, a sophisticated synthetic methodology is not well developed for such cluster types. Here we describe the heteroanion-directed and reduction-driven assembly of a series of multi-layered POM cages 1-10 templated by 1-3 redox-active pyramidal heteroanions. The heteroanions greatly affect the selfassembly of the resultant POM cages, leading to the generation of unprecedented three-layered peanut-shaped - 4, 7 and 8 - or bulletshaped - 5 and 6 - structures. The introduction of reduced molybdate is essential for the self-assembly of the compounds and results in mixed-metal (W/Mo), and mixed-valence (WVI/MoV) 1-10, as confirmed by redox titration, UV-Vis-NIR, NMR spectroscopy and mass spectrometry. 11, the tetrabutyl ammonium (TBA) salt derivative of the fully oxidized 3, is produced as a model structure for measurements to confirm that 1-10 are a statistical mixture of isostructural clusters with different ratios of W/Mo. Finally, multilayered POM cages exhibit dipole relaxations due to the presence of mixed valence WVI/MoV metal centers, demonstrating their potential uses for electronic materials.

Self-Assembly of Alkali Lignin in Tetrahydrofuran

2012 ◽  
Vol 550-553 ◽  
pp. 57-61
Author(s):  
Hao Li ◽  
Yong Hong Deng ◽  
Kai Huang
Keyword(s):  
Charge Transfer ◽  
Electrostatic Interaction ◽  
Self Assembly ◽  
The Self ◽  
Charge Transfer Complexes ◽  
Layer By Layer ◽  
Alkali Lignin ◽  
Higher Temperature ◽  
Effects Of Temperature

Alkali lignin (AL) was used as a polyanion to form layer-by-layer self-assembled film with PDAC as a polycation. The effects of temperature and concentration on the adsorption characteristics of AL were investigated. Iodine was added into AL solutions to study the role of π-π interaction in self-assembly of AL and PDAC. Results show that the self-assembly of AL/PDAC is mainly driven by π-π interaction and electrostatic interaction. A higher temperature or a larger concentration can enhance the aggregation of lignin. I2 can form lignin–iodine charge–transfer complexes with AL to reduce the degree of aggregation of AL, so the adsorbed amount of AL decreases significantly with increasing iodine contents.

scholarly journals Towards 2D layered hybrid perovskites with enhanced functionality: introducing charge-transfer complexes via self-assembly

2019 ◽  
Vol 55 (17) ◽  
pp. 2481-2484 ◽  
Author(s):  
Wouter T. M. Van Gompel ◽  
Roald Herckens ◽  
Kristof Van Hecke ◽  
Bart Ruttens ◽  
Jan D'Haen ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
The Self ◽  
Charge Transfer Complexes ◽  
Organic Layer ◽  
The Family ◽  
Layered Perovskites

This study broadens the family of 2D layered perovskites by the self-assembly of organic charge-transfer complexes in their organic layer.

scholarly journals Pyramidal Heteroanion-Directed and Reduced MoV-Driven Assembly of Multi-Layered Polyoxometalate Cages

2018 ◽  
Author(s):  
Qi Zheng, ◽  
Manuel Kupper ◽  
Weimin Xuan ◽  
Hirofumi Oki ◽  
Ryo Tsunashima ◽  
...  
Keyword(s):  
Self Assembly ◽  
Electronic Materials ◽  
Electronic Devices ◽  
Mixed Valence ◽  
The Self ◽  
Model Structure ◽  
Redox Titration ◽  
Metal Centers ◽  
Redox Active ◽  
Tetrabutyl Ammonium

The fabrication of redox-active polyoxometalates (POMs) that can switch between multiple states is critical for their application in electronic devices, yet, a sophisticated synthetic methodology is not well developed for such cluster types. Here we describe the heteroanion-directed and reduction-driven assembly of a series of multi-layered POM cages 1-10 templated by 1-3 redox-active pyramidal heteroanions. The heteroanions greatly affect the selfassembly of the resultant POM cages, leading to the generation of unprecedented three-layered peanut-shaped - 4, 7 and 8 - or bulletshaped - 5 and 6 - structures. The introduction of reduced molybdate is essential for the self-assembly of the compounds and results in mixed-metal (W/Mo), and mixed-valence (WVI/MoV) 1-10, as confirmed by redox titration, UV-Vis-NIR, NMR spectroscopy and mass spectrometry. 11, the tetrabutyl ammonium (TBA) salt derivative of the fully oxidized 3, is produced as a model structure for measurements to confirm that 1-10 are a statistical mixture of isostructural clusters with different ratios of W/Mo. Finally, multilayered POM cages exhibit dipole relaxations due to the presence of mixed valence WVI/MoV metal centers, demonstrating their potential uses for electronic materials.

Solvent induced helical aggregation in the self-assembly of cholesterol tailed platinum complexes

Soft Matter ◽  
2014 ◽  
Vol 10 (38) ◽  
pp. 7615-7622 ◽  
Author(s):  
Yueyuan Mao ◽  
Keyin Liu ◽  
Luyan Meng ◽  
Liang Chen ◽  
Liming Chen ◽  
...  
Keyword(s):  
Self Assembly ◽  
Platinum Complexes ◽  
The Self

Gelation and solvent triggered helical aggregation were reported in the self-assembly of cholesterol tailed platinum complexes.

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