Research on Interfacial Coordination of Trigonal Schiff Base Compound with Hydrophobic Core and Aromatic Periphery at Air/Water Interface

2011 ◽  
Vol 694 ◽  
pp. 778-782
Author(s):  
Ti Feng Jiao ◽  
Jing Xin Zhou
Keyword(s):  
Schiff Base ◽  
Langmuir Monolayers ◽  
Molecular Structures ◽  
Hydrophobic Core ◽  
Interfacial Assembly ◽  
Solid Substrates ◽  
Air Water Interface ◽  
Interfacial Films ◽  
Insight Into

Great interest has been given to the Schiff base amphiphiles with special molecular structures because of their unique properties. In this article, we report some interesting properties of the interfacial films formed by a newly designed trigonal amphiphiles Schiff base containing hydrophobic core and aromatic periphery. This novel Schiff base amphiphile could be spread to form stable monolayers and coordinated with Cu(Ac)2 in situ in the monolayer. The coordination with Cu(II) ion has a great effect on the regulation of the properties of the Langmuir monolayers. A larger limiting molecular area was observed for the monolayers of the trigonal amphiphile on Cu(II) ions subphase. Both the monolayers on water and on the aqueous Cu(Ac)2 subphase were transferred onto solid substrates, and different morphologies were observed for films. The present work provided new insight into the design and interfacial assembly of novel Schiff base amphiphiles with special molecular structures and substituted groups.

Research on Interfacial Assembly of Some Trigonal Schiff Base Amphiphiles in LB Films

2013 ◽  
Vol 706-708 ◽  
pp. 244-247
Author(s):  
Yong Xiao
Keyword(s):  
Schiff Base ◽  
Morphological Characterization ◽  
Molecular Structures ◽  
Atomic Force Microscopy Measurement ◽  
Interfacial Assembly ◽  
Force Microscopy ◽  
Atomic Force ◽  
Solid Substrates ◽  
Microscopy Measurement

Some trigonal Schiff base amphiphiles with symmetric aromatic cores and different substituted headgroups were designed and their interfacial assemblies were investigated. When on the metal ions subphases, an in situ coordination can occur for all compounds. The coordinated films could be transferred onto solid substrates and subsequently characterized by morphological characterization with atomic force microscopy measurement. Depending on the trigonal molecular structures and different substituted headgroups, these amphiphiles showed distinct assembly behaviors in the organized molecular films.

In situ Raman Spectroscopy of Langmuir Monolayers at Air-Water Interface

2006 ◽  
Vol 22 (09) ◽  
pp. 1061-1064
Author(s):  
GUO Hao ◽  
◽  
◽  
DAI Shu-Xi ◽  
SUN Cheng-Feng ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Langmuir Monolayers ◽  
Water Interface ◽  
Air Water Interface

Chiral Interfacial Assembly of a Trigonal Schiff Base Compound with TPPS in Organized Molecular Films

2012 ◽  
Vol 236-237 ◽  
pp. 810-814
Author(s):  
Ti Feng Jiao ◽  
Jing Xin Zhou
Keyword(s):  
Schiff Base ◽  
Pure Water ◽  
Supramolecular Assembly ◽  
Solid Substrate ◽  
Interfacial Assembly ◽  
Alkyl Chains ◽  
Schiff Base Compound ◽  
Uniform Domains ◽  
Base Compound

In order to investigate the chiral interfacial assembly of special amphiphile, a trigonal Schiff base compound with long alkyl chains was designed and synthesized, and its supramolecular assembly and interaction properties were investigated by spectral and morphological measurements. Condensed monolayers were obtained on pure water surface, in which flat and uniform domains were obtained for the monolayers. When an anionic tetrakis(4-sulfonatonphenyl)porphine (TPPS) was added into an acidic subphase, an in situ complex formation between the trigonal amphiphile and TPPS occurred. The complex monolayers were transferred onto solid substrate and TPPS existed as J-aggregate and J-aggregate in the complex films. Due to the multisited positive charges in the spacer on acidic subphase, the complex films of trigonal amphiphile with TPPS appeared as short nanorod structures and formed two-dimensional (2D) conglomerate chiral domains.

scholarly journals Self-Assembly, Interfacial Nanostructure, and Supramolecular Chirality of the Langmuir-Blodgett Films of Some Schiff Base Derivatives without Alkyl Chain

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Tifeng Jiao ◽  
Ruirui Xing ◽  
Qingrui Zhang ◽  
Yaopeng Lv ◽  
Jingxin Zhou ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Self Assembly ◽  
Alkyl Chain ◽  
Water Interface ◽  
Supramolecular Chirality ◽  
Air Water Interface ◽  
Langmuir Blodgett Films ◽  
Base Derivative

A special naphthyl-containing Schiff base derivative,N,N′-bis(2-hydroxy-1-naphthylidene)-1,2-phenylenediamine, was synthesized, and its coordination with various metal ions in situ at the air/water interface has been investigated. Although the ligand contains no alkyl chain, it can be spread on water surface. When metal ions existed in the subphase, an interfacial coordination between the ligand and different metal ions occurred in the spreading film, while different Nanostructures were fabricated in the monolayers. Interestingly to note that among various metal ions, only the in situ coordination-induced Cu(II)-complex film showed supramolecular chirality, although the multilayer films from the ligand or preformed complex are achiral. The chirality of the in situ Cu(II)-coordinated Langmuir film was developed due to the special distorted coordination reaction and the spatial limitation at the air/water interface. A possible organization mechanism at the air/water interface was suggested.

Interfacial Assembly and Morphological Investigation of Polythiophene Derivative with Conjugated Side Chain at Air/Water Interface

2011 ◽  
Vol 121-126 ◽  
pp. 918-922
Author(s):  
Ti Feng Jiao ◽  
Jing Xin Zhou
Keyword(s):  
Visible Region ◽  
Molecular Structures ◽  
Absorption Peak ◽  
Side Chain ◽  
Water Interface ◽  
Morphological Investigation ◽  
Visible Absorption ◽  
Interfacial Assembly ◽  
Air Water Interface ◽  
Polythiophene Derivative

A polythiophene derivative with conjugated side chain were synthesized and characterized by LB method. It was found that this polymer can form stable monolayer at the air/water interface. It is important that the interaction between the polymer chains showed important role in regulating the spectra and interfacial morphology of polythiophene polymer, which have been characterized by spectral and morphological investigation. The absorption spectra of the polymer show two absorption peaks located in UV and visible region, where the visible absorption peak is attributed to the -* transition of the conjugated main chains while the UV absorption peak comes from the conjugated side chains. The necklace-like domains could be found and altered with change of surface pressure. The present work provided new insight into the design and interfacial assembly of polythiophene derivative with special molecular structures and substituted groups.

Interfacial Assembly of Two Gemini-Type Schiff Base Amphiphiles with Aromatic Spacers in Organized Molecular Films

2013 ◽  
Vol 745-746 ◽  
pp. 376-381
Author(s):  
Feng Yan Wang ◽  
Ti Feng Jiao ◽  
Qing Rui Zhang
Keyword(s):  
Schiff Base ◽  
Molecular Films ◽  
Spectral Measurements ◽  
Molecular Rearrangement ◽  
Interfacial Assembly ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Gemini Amphiphiles ◽  
Predominant Effect

Gemini amphiphiles have been widely investigated in many aspects due to the unique structure. In this study, two gemini-type Schiff base amphiphiles containing aromatic spacers were synthesized and characterized in Langmuir-Blodgett films. Both compounds formed stable multilayer films and showed distinct phase behaviours on water surface and ion subphase. When the compounds spread on Cu (II) ions subphase, an in-situ coordination occurred for both ligands. While spectral measurements confirmed the coordination with Cu (II) ions and aggregation mode, the morphological investigations showed the distinct nanostructures and molecular rearrangement depended on the molecular spacers and aggregation modes. For both process, the aromatic spacers in gemini amphiphiles have predominant effect in regulating the aggregation modes and spectral changes in organized molecular films.

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