Pyroelectricity and temperature-dependent domain structure of azobenzene derivative polar Langmuir-Blodgett films

Yang, Jun; Wang, R.; Wang, H.; Li, T.; Shou-Fu, Pan; Zhang, B.

doi:10.1016/0040-6090(93)04072-z

Cited by 10 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[28][29][30] Taken BSC10 as an example, in comparison with those in transmission spectra on water surface, the new strong vibration for C=N and an increased C-O bending were observed at 1640 and 1285 cm À1 in the RAS mode, respectively. This indicated that the C = N group and benzene ring in BSC10 orientated nearly parallel to the film plane.…”

Section: Ftir Spectra Of the Transferred Filmsmentioning

confidence: 92%

Supramolecular Assembly and Headgroup Effect in Interfacial Organized Films (I): A Study of Some Bolaamphiphiles

Jiao

Zhou

Zhang

et al. 2011

Journal of Dispersion Science and Technology

View full text Add to dashboard Cite

Two bola form Schiff bases derivatives with different substituted head groups have been designed and their interfacial phase behaviors and coordination with Cu(II) ions were investigated. It has been found that while one molecule with benzene headgroup formed dotted aggregations at the air/water interface, another with naphthyl moiety as head group formed crystalline multilayer films on water surface. When on the sub phase containing Cu(II) ions, both of the Schiff bases can coordinate with Cu(II) in situ in the spreading films with the obvious conformational change of alkyl chains. The in situ Cu(II)-coordinated films could be transferred onto solid substrates and subsequently characterized by various spectroscopic methods such as UV-vis and Fourier transform infrared spectra as well as the morphological character with atomic force microscopy measurement. In comparison, the ex situ coordination process at the liquid/solid interface have also been investigated by continuous spectral measurement. Depending on the different head groups, these amphiphiles showed different aggregation behaviors in the Langmuir-Blodgett films. Particularly, during the coordination process of ligand with Cu(II) ions in organized molecular films, great conformational change of the alkyl chains was observed. At the same time, a rational explanation about the head group effect on regulating the aggregation behaviors was discussed.

show abstract

Section: Ftir Spectra Of the Transferred Filmsmentioning

confidence: 92%

Supramolecular Assembly and Headgroup Effect in Interfacial Organized Films (I): A Study of Some Bolaamphiphiles

Jiao

Zhou

Zhang

et al. 2011

Journal of Dispersion Science and Technology

View full text Add to dashboard Cite

show abstract

“…In present case, the vibration position suggested the alkyl chain kept basically in an ordered arrangement. We can further get the information on the orientation of the alkyl chain by comparison of the transmission and RAS spectra of the films [36][37][38][39]. In the transmission mode, the intensity of vibration at 2850 cm −1 is very near to that of the band at 2919 cm −1 .…”

Section: Ft-ir Spectra Of the Transferred Filmsmentioning

confidence: 97%

Substitution controlled molecular orientation and nanostructure in the Langmuir–Blodgett films of a series of amphiphilic naphthylidene-containing Schiff base derivatives

Jiao

Liu

2006

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…Among all the applications, the pyroelectric performance of Mn 3 B 7 O 13 Cl was particularly concerning (Schmid et al 1980;Campa-Molina et al 1994;Bhalla et al 1985). The pyroelectricity effect is a kind of functional characteristic that attracts wide attention and has been widely applied in infrared radiation, temperature detector, waste heat harvesters et al (Kuznetsov et (Yang et al 1994;Lang et al 2005). When the temperature is less than 690K, Mn 3 B 7 O 13 Cl undergoes a structural phase transition from the cubic to the orthorhombic crystal system, and crystallize at room temperature with the spatial point group of Pca2 1 .…”

Section: Introductionmentioning

confidence: 99%

The origin of pyroelectricity in boracite at varying temperatures

wang

Sun

Guo

et al. 2023

Preprint

View full text Add to dashboard Cite

Chambersite (Mn3B7O13Cl) has excellent pyroelectric performance and promised to be a low-cost substitute for LiTaO3 and a non-toxic alternative to PbTiO3 in many application scenarios. However, the origin and mechanism of pyroelectricity in Mn3B7O13Cl at varying temperatures remain to be studied. In this work, we report the temperature-dependent crystal structure information via X-ray diffraction refinement, and based on this, we calculated the intrinsic electric dipole moments of the typical coordination polyhedral ([ClMn6]) in Mn3B7O13Cl unit cell along the c-axis at various temperature ranging from 300 to 400 K. The calculated pyroelectric coefficients based on the intrinsic electric dipole moments were in line with the experimental results, based on the above results, we can conclude that the origin of pyroelectricity in Mn3B7O13Cl is mainly the distortion of the ClMn6 polyhedron along the c-axis. Our work has understood the pyroelectric mechanism of Mn3B7O13Cl, and has played a positive role in promoting the modifications and applications for Mn3B7O13Cl and other boracite minerals.

show abstract

Pyroelectricity and temperature-dependent domain structure of azobenzene derivative polar Langmuir-Blodgett films

Cited by 10 publications

References 16 publications

Supramolecular Assembly and Headgroup Effect in Interfacial Organized Films (I): A Study of Some Bolaamphiphiles

Supramolecular Assembly and Headgroup Effect in Interfacial Organized Films (I): A Study of Some Bolaamphiphiles

Substitution controlled molecular orientation and nanostructure in the Langmuir–Blodgett films of a series of amphiphilic naphthylidene-containing Schiff base derivatives

The origin of pyroelectricity in boracite at varying temperatures

Contact Info

Product

Resources

About