Strong CPL-active Liquid Crystal Materials Induced by Intermolecular Hydrogen-bonding Interaction and Chirality Induction Mechanism

Soft Matter ◽  
2021 ◽  
Author(s):  
Yihao Shen ◽  
Kun Yao ◽  
Hang Li ◽  
Zhaoran Xu ◽  
Yiwu Quan ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Liquid Crystal ◽  
Intermolecular Hydrogen Bond ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bonding Interaction ◽  
Induction Mechanism ◽  
Intermolecular Hydrogen Bonding Interaction ◽  
Bonding Interaction ◽  
Active Liquid ◽  
Chirality Induction

A novel co-assembly material can emit strong CPL signals (λem = 485 nm, glum = +0.076/-0.064) from achiral AIE-active β-cyanostilbene (CYS) liquid crystal dye through intermolecular hydrogen bond (HB) interaction...

Investigation of Hydrogen Bonding Interaction between Bolaform Schiff Bases with Barbituric Acid by HPLC

2011 ◽  
Vol 356-360 ◽  
pp. 48-51
Author(s):  
Qi Tong ◽  
Ti Feng Jiao
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Liquid Chromatography ◽  
Schiff Bases ◽  
Barbituric Acid ◽  
Flexible Structure ◽  
Intermolecular Hydrogen Bonding ◽  
Acid Molecule ◽  
Hydrogen Bonding Interaction ◽  
Bonding Interaction

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.

scholarly journals Ethanol(nitrato)[tris(4-cyano-3-phenyl-1H-pyrazol-1-yl)hydroborato]nickel(II)

IUCrData ◽  
2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Elvin V. Salerno ◽  
Lava R. Kadel ◽  
David M. Eichhorn
Keyword(s):  
Hydrogen Bonding ◽  
Coordination Sphere ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bonding Interaction ◽  
Sandwich Complex ◽  
Intermolecular Hydrogen Bonding Interaction ◽  
Bonding Interaction ◽  
Half Sandwich

The synthesis and structure is reported of TpPh,4CNNi(NO3)(EtOH) or [Ni(C30H19BN9)(NO3)(C2H6O)], the first half-sandwich complex of a cyanoscorpionate ligand. The pseudooctahedral coordination sphere of the NiII ion is comprised of a tridentate tris(4-cyano-3-phenylpyrazolyl)borate ligand, a bidentate nitrate ligand and a neutral ethanol ligand. The phenyl substituents on the TpPh,4CN ligand are relatively parallel to the planes of the ethanol and nitrate ligands. An intermolecular hydrogen-bonding interaction is evident between the ethanol OH group and the pyrazole CN substituent. The ethanol ligand was modeled with a 0.572 (13)/0.428 (13) disorder of the methyl C atom.

Solid state self-assembly and morphology of a rigid non-coded γ-amino acid inserted tripeptide

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Arpita Dutta ◽  
Suven Das ◽  
Purak Das ◽  
Suvendu Maity ◽  
Prasanta Ghosh
Keyword(s):  
Amino Acid ◽  
Solid State ◽  
Self Assembly ◽  
Intermolecular Hydrogen Bonding ◽  
Aminobenzoic Acid ◽  
Hydrogen Bonding Interaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Intermolecular Hydrogen Bonding Interaction ◽  
Bonding Interaction

Abstract A tripeptide Boc-L-Pro-m-ABA-Aib-OMe was synthesized where meta-aminobenzoic acid (m-ABA), a rigid non-coded γ-amino acid is placed as middle residue. Single crystal X-ray diffraction study indicates that the peptide self-assembles into helical motif through intermolecular hydrogen bonding interaction N–H···O, C–H···O, π···π interaction and van der Waals interaction. HR-TEM image reveals the formation of fibril in the solid state.

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