The molecular recognition controlled stereomutation cycle in a dynamic helical assembly

2015 ◽  
Vol 13 (39) ◽  
pp. 9938-9942 ◽  
Author(s):  
Mohit Kumar ◽  
Madugula Drona Reddy ◽  
Ananya Mishra ◽  
Subi J. George
Keyword(s):  
Molecular Recognition ◽  
Supramolecular Assembly ◽  
Competitive Binding ◽  
Perylene Bisimide

Perylene bisimide functionalized with a phosphate recognition unit displays competitive binding induced unprecedented control over the helix mutation cycle in a dynamic supramolecular assembly.

Hydrogen bonded supramolecular structures: a further insight into the diamine-diol recognition and self-assembly

2000 ◽  
Vol 78 (6) ◽  
pp. 723-731 ◽  
Author(s):  
Stefano Roelens ◽  
Paolo Dapporto ◽  
Paola Paoli
Keyword(s):  
Molecular Recognition ◽  
Gas Phase ◽  
Self Assembly ◽  
Supramolecular Assembly ◽  
Supramolecular Structures ◽  
Unique Role ◽  
X Ray ◽  
Molecular Code ◽  
Insight Into

A new H-bonded supramolecular assembly of the diamine-diol family has been obtained from (1R,2R)-1,2-diaminocyclohexane (DAC) and (S)-1-phenyl-1,2-ethanediol (PED). The structure was characterized by single-crystal X-ray analysis and showed the typical architecture of DAC based assemblies, consisting of a three-stranded helicate coiling around a H-bonded core, with a predictable helicity sense determined by the configuration of DAC. The new assembly, while reconfirming the unique role of DAC as a powerful assembler of supramolecular structures, demonstrated that the C2 symmetry of diol partners employed so far is not essential for assembling helicates, although chirality is. In the case of the adduct between (1R,2R)-1,2-diaminocyclohexane and (2R,3R)-2,3-butanediol, molecular recognition and self-assembly have been shown to take place even in the absence of solvent, in the gas phase, where long crystals were formed by spontaneous organized aggregation of diamine-diol units. A thorough analysis of the results from the present and previous investigations has lead to a deeper understanding of the key features of the diamine-diol molecular code and of the requirements for recognition and assembly.Key words: supramolecular, hydrogen bonding, molecular recognition, self-assembly, diamines, diols.

Efficient molecular recognition based on nonspecific van der Waals interaction at the solid/liquid interface

2014 ◽  
Vol 50 (80) ◽  
pp. 11946-11949 ◽  
Author(s):  
Lili Cao ◽  
Lirong Xu ◽  
Dahui Zhao ◽  
Kazukuni Tahara ◽  
Yoshito Tobe ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Van Der Waals ◽  
Supramolecular Assembly ◽  
Building Blocks ◽  
Liquid Interface ◽  
Van Der Waals Interaction ◽  
Van Der Waals Interactions ◽  
General Strategy ◽  
Solid Liquid Interface ◽  
Solid Liquid

A surprising recognition phenomenon based on van der Waals interactions was observed, which proves that the design of the supramolecular assembly from its building blocks represents a highly promising and general strategy.

An Elaborate Supramolecular Assembly for a Smart Nanodevice for Ratiometric Molecular Recognition and Logic Gates

2016 ◽  
Vol 22 (24) ◽  
pp. 8339-8345 ◽  
Author(s):  
Yu-Jie Xie ◽  
Wen-Yu Wu ◽  
Hao Chen ◽  
Xiang Li ◽  
Hao-Li Zhang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Supramolecular Assembly ◽  
Logic Gates

scholarly journals Synthesis and Photocontrolled Supramolecular Self-Assembly of Azobenzene-Functionalized Perylene Bisimide Derivatives

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1143 ◽  
Author(s):  
Ling ◽  
Cheng ◽  
Miao ◽  
Zhang ◽  
Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Alkyl Chain ◽  
Supramolecular Assembly ◽  
Proton Nuclear Magnetic Resonance ◽  
Ionization Time ◽  
Perylene Bisimide ◽  
Flight Mass Spectrometry ◽  
Chain Lengths ◽  
Tetracarboxylic Dianhydride ◽  
Photoisomerization Process

Azobenzene (Azo) units were successfully introduced into perylene bisimide (PBI) structures in order to realize the photocontrolling of the morphology of the supramolecular assembly of PBI by a photoisomerization process. A total of three Azo-functionalized perylene bisimide derivatives (PBI1, PBI2, and PBI3) with different alkyl chain lengths were designed and synthesized by imidization of 3,4,9,10-perylene tetracarboxylic dianhydride with the corresponding amines. The structures of these compounds were characterized by proton nuclear magnetic resonance (1H NMR) and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The photoisomerization behaviors of Azo units in PBIs were investigated using ultraviolet-visible (UV-VIS) absorption spectroscopy, which were obviously effected by solvents and the alkyl chain length. Furthermore, the photoisomerization of Azo units has the obviously regulatory effect on the morphology of supramolecular assembly of PBIs, especially for the medium-length alkyl chain-linked Azo-functionalized PBI derivative (PBI2). This research realized the photocontrolling of the morphology of the supramolecular assembly of PBI derivatives by photoisomerization of Azo units.

Sign in / Sign up

Export Citation Format

Share Document