Dipole moment and solvatochromism of benzoic acid liquid crystals: tuning the dipole moment and molecular orbital energies by substituted Au under external electric field
Yükleniyor...
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The optical absorption and steady-state fluorescence spectra of 4-heptyloxybenzoic acid (4hoba), 4-octyloxybenzoic acid (400ba) and 4-nonyloxybenzoic acid (4noba) liquid crystals have been measured in a series of different polarity organic solvents. The ground state (mu(g)) and excited state (mu(e)) dipole moments of the monomeric and dimeric 4-alkyloxybenzoic acid liquid crystals have been obtained by means of different solvatochromic shift methods. HOMO-LUMO gaps (HLG) and dipole moments have been tuned by applying external electric (EF) field on monomer, dimer and Au substituted monomer and dimer liquid crystal structures. By applying external electric field, Au substituted monomer liquid crystals display semiconductor character, while Au substituted dimer liquid crystals gain metallic character under E = 0.04 V/angstrom. Eventuated specific and non-specific interactions between solvent and solute in solvent medium have been expounded by using LSER (Linear Solvation Energy Relationships). (C) 2017 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
4-Alkyloxybenzoic Acid, Dipole Moment, Solvatochromism, Tuning Band Gap, External Electric Field Effect, Substituting Au
Kaynak
Journal Of Molecular Structure
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
1137