Effect ofN-Alkyl Substituents on the Hierarchical Self-Assembly of β-Cyclodextrin-Linked Pyrene-Pyromellitic Diimide Charge-Transfer Complexes

2018 ◽  
Vol 24 (44) ◽  
pp. 11451-11460 ◽  
Author(s):  
Sumesh Babu Krishnan ◽  
Retheesh Krishnan ◽  
Karical Raman Gopidas
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Charge Transfer Complexes

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 Light-induced dilation in nanosheets of charge-transfer complexes

2018 ◽  
Vol 115 (15) ◽  
pp. 3776-3781 ◽  
Author(s):  
Zhuolei Zhang ◽  
Richard C. Remsing ◽  
Himanshu Chakraborty ◽  
Wenxiu Gao ◽  
Guoliang Yuan ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Charge Transfer ◽  
Self Assembly ◽  
Response Times ◽  
Charge Transfer Complexes ◽  
Wide Range ◽  
Molecular Charge ◽  
Molecular Components ◽  
Lattice Dilation ◽  
Electronic Technologies

We report the observation of a sizable photostrictive effect of 5.7% with fast, submillisecond response times, arising from a light-induced lattice dilation of a molecular nanosheet, composed of the molecular charge-transfer compound dibenzotetrathiafulvalene (DBTTF) and C60. An interfacial self-assembly approach is introduced for the thickness-controlled growth of the thin films. From photoabsorption measurements, molecular simulations, and electronic structure calculations, we suggest that photostriction within these films arises from a transformation in the molecular structure of constituent molecules upon photoinduced charge transfer, as well as the accommodation of free charge carriers within the material. Additionally, we find that the photostrictive properties of the nanosheets are thickness-dependent, a phenomenon that we suggest arises from surface-induced conformational disorder in the molecular components of the film. Moreover, because of the molecular structure in the films, which results largely from interactions between the constituent π-systems and the sulfur atoms of DBTTF, the optoelectronic properties are found to be anisotropic. This work enables the fabrication of 2D molecular charge-transfer nanosheets with tunable thicknesses and properties, suitable for a wide range of applications in flexible electronic technologies.

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.

Functionalized naphthalenediimides based supramolecular charge–transfer complexes via self-assembly and their photophysical properties†

CrystEngComm ◽  
2021 ◽  
Author(s):  
Pooja Rani ◽  
Ahmad Husain ◽  
Ananya Shukla ◽  
Neha Singla ◽  
Ankit Kumar Srivastava ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Photophysical Properties ◽  
Charge Transfer Complexes ◽  
Self Assembled ◽  
Organic Fluorophore ◽  
Ct Complexes

We report here the design and syntheses of a naphthalenediimide (NDI)-N functionalized organic fluorophore, 1 and its supramolecular CT complexes [(1∙2H)2+·(PA–)2] (2) and [(1∙2H)2+·(3,5-DNSA–)2] (3), self-assembled from 1 as an...

Magnetic properties of new charge-transfer complexes based on manganese porphyrins

1997 ◽  
Vol 90 (3) ◽  
pp. 407-413
Author(s):  
MARC KELEMEN ◽  
CHRISTOPH WACHTER ◽  
HUBERT WINTER ◽  
ELMAR DORMANN ◽  
RUDOLF GOMPPER ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Charge Transfer ◽  
Charge Transfer Complexes ◽  
Manganese Porphyrins

Charge Transfer Complexation Boosts Molecular Conductance Through Fermi Level Pinning

2018 ◽  
Author(s):  
Kun Wang ◽  
Andrea Vezzoli ◽  
Iain Grace ◽  
Maeve McLaughlin ◽  
Richard Nichols ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Single Molecule ◽  
Quantum Interference ◽  
Transmission Function ◽  
Scanning Tunneling ◽  
Charge Transfer Complexes ◽  
Tunneling Microscopy ◽  
Quantum Interference Effect ◽  
Single Molecule Junctions ◽  
Charge Transfer Complexation

We have used scanning tunneling microscopy to create and study single molecule junctions with thioether-terminated oligothiophene molecules. We find that the conductance of these junctions increases upon formation of charge transfer complexes of the molecules with tetracyanoethene, and that the extent of the conductance increase is greater the longer is the oligothiophene, i.e. the lower is the conductance of the uncomplexed molecule in the junction. We use non-equilibrium Green's function transport calculations to explore the reasons for this theoretically, and find that new resonances appear in the transmission function, pinned close to the Fermi energy of the contacts, as a consequence of the charge transfer interaction. This is an example of a room temperature quantum interference effect, which in this case boosts junction conductance in contrast to earlier observations of QI that result in diminished conductance.<br>

Sign in / Sign up

Export Citation Format

Share Document