Novel columnar liquid crystalline oligomers: Triphenylene tetramers with rigid aromatic Schiff-bases and hydrogen-bonding spacers via click chemistry

In order to investigate the intermolecular hydrogen bonding of special amphiphiles, two bolaform amphiphilic Schiff bases (GN1 and GN2) with different hydrophilic spacers were designed, and their interaction with barbituric acid were tested by liquid chromatography. The chromatographic properties showed that both the Schiff bases showed hydrogen bonding interaction with barbituric acid. In addition, the influence of various detectors was also studied on both cases. Experimental results show that the test with FLD showed better determination than other detectors. It is proposed that due to the directionality and strong matching of hydrogen bond, one barbituric acid molecule can be encapsulated into the intramolecular area of GN1, while two barbituric acid molecules were trapped into the GN2 molecule through intermolecular H-bonds for GN2 due to the long spacer and flexible structure. A rational complex mode was proposed.

Download Full-text

Influence of pendent alkyl chains on Heck and Sonogashira C–C coupling catalyzed with palladium(II) complexes of selenated Schiff bases having liquid crystalline properties

Journal of Organometallic Chemistry ◽

10.1016/j.jorganchem.2013.12.006 ◽

2014 ◽

Vol 753 ◽

pp. 42-47 ◽

Cited By ~ 11

Author(s):

Gyandshwar Kumar Rao ◽

Arun Kumar ◽

Mahabir Pratap Singh ◽

Ajay Kumar ◽

Ashok Manikrao Biradar ◽

...

Keyword(s):

Schiff Bases ◽

Liquid Crystalline ◽

Alkyl Chains

Download Full-text

Hydrogen bonding liquid crystalline benzoic acids with alkylthio groups: phase transition behavior and insights into the cybotactic nematic phase

New Journal of Chemistry ◽

10.1039/c7nj00282c ◽

2017 ◽

Vol 41 (14) ◽

pp. 6514-6522 ◽

Cited By ~ 16

Author(s):

Yuki Arakawa ◽

Yukito Sasaki ◽

Kazunobu Igawa ◽

Hideto Tsuji

Keyword(s):

Phase Transition ◽

Hydrogen Bonding ◽

Nematic Phase ◽

Liquid Crystalline ◽

Benzoic Acids ◽

Phase Transition Behavior ◽

Transition Behavior

A novel class of hydrogen bonding liquid crystalline benzoic acids with alkylthio groups was established and their phase transition behavior was investigated in detail.

Download Full-text

Supramolecular side chain liquid crystalline polymers assembled via hydrogen bonding between carboxylic acid-containing polysiloxane and azobenzene derivatives

Liquid Crystals ◽

10.1080/02678290110071556 ◽

2001 ◽

Vol 28 (10) ◽

pp. 1527-1538 ◽

Cited By ~ 2

Author(s):

Suat Hong Goh ◽

Yee Hing Lai ◽

Si Xue Cheng

Keyword(s):

Hydrogen Bonding ◽

Carboxylic Acid ◽

Liquid Crystalline ◽

Liquid Crystalline Polymers ◽

Side Chain ◽

Crystalline Polymers ◽

Azobenzene Derivatives

Download Full-text

Taming the Reactivity of Alkyl Azides by Intramolecular Hydrogen Bonding: Site-Selective Conjugation of Unhindered Diazides

Organic Chemistry Frontiers ◽

10.1039/d1qo01088c ◽

2021 ◽

Author(s):

Koshiro Maegawa ◽

Hiroki Tanimoto ◽

Seiji Onishi ◽

Takenori Tomohiro ◽

Tsumoru Morimoto ◽

...

Keyword(s):

Hydrogen Bonding ◽

Click Chemistry ◽

Intramolecular Hydrogen Bonding ◽

Alkyl Azides ◽

Organic Azides ◽

Intramolecular Hydrogen ◽

Site Selective ◽

Hydrogen Bonding Site ◽

Bonding Site

Organic azides are still in the center of click chemistry connecting two molecules. However, taming the conjugation selectivity of azides is difficult without the help of the bulky groups. We...

Download Full-text

Intermolecular hydrogen bonding in the complexes of Schiff bases with acetic acid

Journal of Structural Chemistry ◽

10.1134/s0022476611020016 ◽

2011 ◽

Vol 52 (2) ◽

pp. 227-233 ◽

Cited By ~ 2

Author(s):

G. A. Zhurko ◽

V. V. Aleksandriiskii ◽

V. A. Burmistrov

Keyword(s):

Hydrogen Bonding ◽

Acetic Acid ◽

Schiff Bases ◽

Intermolecular Hydrogen Bonding

Download Full-text