Balanced π–π interactions directing the self-assembly of indolocarbazole-based low molecular mass organogelators

2014 ◽  
Vol 12 (32) ◽  
pp. 6134-6144 ◽  
Author(s):  
Peng Gong ◽  
Pengchong Xue ◽  
Chong Qian ◽  
Zhenqi Zhang ◽  
Ran Lu
Keyword(s):  
Molecular Mass ◽  
Blue Light ◽  
Self Assembly ◽  
The Self ◽  
Π Interactions

New indolocarbazole-based organogelators emitting strong blue light have been synthesized.

Some insights into the self-assembly patterns of two diamine derivatives as low molecular mass organogelators from molecular dynamics

2017 ◽  
Vol 43 (13-16) ◽  
pp. 1019-1025
Author(s):  
Bing Zhang ◽  
Kaixuan Zhou ◽  
Shufan Mo ◽  
Lilin Zhu ◽  
Zhoucheng Su ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Mass ◽  
Self Assembly ◽  
The Self

Self-Assembly of Pulp Derivatives as Amphiphilic Compounds: Verification of Molecular Association and Complexation with Low and High Molecular Mass Compounds

Holzforschung ◽  
2000 ◽  
Vol 54 (5) ◽  
pp. 535-540 ◽  
Author(s):  
Y. Uraki ◽  
A. Hanzaki ◽  
K. Hashida ◽  
Y. Sano
Keyword(s):  
Molecular Mass ◽  
Self Assembly ◽  
Sodium Dodecyl ◽  
High Molecular Mass ◽  
Water Soluble ◽  
The Self ◽  
Reduced Viscosity ◽  
Amphiphilic Compounds ◽  
Initial Stage ◽  
Ph Conditions

Summary Acetic acid pulps (AAPs) have been converted to amphiphiles by hydroxypropylation. The resulting hydroxypropyl derivatives (HP-AAPs) formed self-aggregates in water. The interaction of HP-AAP molecules was investigated by a viscometric method. The reduced viscosity (η sp/c) of HP-AAP in both water and chloroform was increased remarkably above a concentration of 0.1%. This implies that HP-AAP molecules strongly interact with each other, caused by the hydrophobic interaction of residual lignins in water and by hydrogen bonding of polysaccharides in chloroform. The self-aggregates adsorb water-soluble fluorescent agents. The highest adsorption capacity was observed at the lowest pH among three pH conditions investigated. They also solubilized sparingly water-soluble fluorescent agents in water in larger amounts than did sodium dodecyl sulfate when used as a surfactant. These results suggest that the self-aggregates of HP-AAP adsorb low molecular mass compounds as inclusion compounds. To clarify the interaction of HP-AAP with biopolymers as high molecular mass compounds, the change in the activity of papain, a protease, in phosphate buffer (pH 6.2) was examined in the presence and absence of HP-AAP. HP-AAP acted as an inhibitor of papain at the initial stage of mixing. After mixing for 24 hours, however, the papain activity was revived and preserved for 6 days. In contrast, the papain activity vanished in the absence of HP-AAP after 24 hours because of autolysis. Therefore, HP-AAP protects papain against autolysis, resulting from tight complexation with the biopolymer.

π-π interactions in the self-assembly of melamine and barbituric acid derivatives

2001 ◽  
Vol 44 (5) ◽  
pp. 478-485 ◽  
Author(s):  
Wensheng Yang ◽  
Yueshun Jiang ◽  
Jiaqi Zhuang ◽  
Nan Lü ◽  
Siguang Chen ◽  
...  
Keyword(s):  
Self Assembly ◽  
Barbituric Acid ◽  
The Self ◽  
Π Interactions ◽  
Barbituric Acid Derivatives

Exploration of CH⋯π interactions involving the π-system of pseudohalide coligands in metal complexes of a Schiff-base ligand

CrystEngComm ◽  
2015 ◽  
Vol 17 (25) ◽  
pp. 4680-4690 ◽  
Author(s):  
Prateeti Chakraborty ◽  
Suranjana Purkait ◽  
Sandip Mondal ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Schiff Base Ligand ◽  
Self Assembly ◽  
The Self ◽  
Schiff Base Complexes ◽  
Π Interactions ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The role of non-covalent interactions in the self-assembly of Schiff-base complexes of ZnII, CuII and NiII has been investigated experimentally and theoretically with especial attention to unconventional C–H⋯π interactions involving pseudohalide coligands.

scholarly journals Guest-induced stereoselective self-assembly of quinoline-containing PdII and PtII metallacycles

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 80181-80192 ◽  
Author(s):  
Víctor Blanco ◽  
Dolores Abella ◽  
Tamara Rama ◽  
Cristina Alvariño ◽  
Marcos D. García ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Hydrophobic Character ◽  
Π Interactions

The inclusion of aromatics within atropisomeric metallacycles induced stereoselectivity on the self-assembly. This selectivity is influenced by the size of the guests, the C–H⋯π interactions and the π-acceptor and hydrophobic character of the host.

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