In situ sol–gel fabrication of new poly(amide–ether–imide)/titania (TiO2) nanocomposite thin films containing l-leucine moieties

Seyedjamali, Hojjat; Pirisedigh, Azadeh

doi:10.1007/s00396-010-2298-3

Cited by 19 publications

(12 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 which confirms the enhancement in the adsorption efficiency as a result of the increase in titania percentages. It may be discussed by either more aggregation of titania nanoparticles or creation of titanium ion-acac complex [6,[23][24][25]. Of course, the complex mechanism may be canceled following the gelation step.…”

Section: Uv-vis Spectroscopymentioning

confidence: 98%

“…5) did not show crystalline region, probably due to the existence of bulky pendant groups in the structure of polymer matrix which disrupt the arrangements of polymer chains and obligate them to be amorphous. Predictably, the described procedure was directed to the formation of amorphous titania particles too [23,24,26].…”

Section: Xrd Patternsmentioning

confidence: 99%

“…Likewise, the fabrication of nanocomposites containing natural fractions is promising. Recently, we have reported the full synthesis and characterization of new PI/titania nanohybrid materials containing L-amino acid fractions in the main chain of polymer matrix as well as pendant groups [23,24].…”

Section: Introductionmentioning

confidence: 99%

“…Our study on fabrication of amino acid containing PI/titania nanocomposites was initiated with the use of L-leucine fractions in the structure of polymer main chain [23]. Then, in a separate work, L-phenylalanine was used where it located in the structure of pendant groups [24].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Well-dispersed polyimide/TiO2 nanocomposites: in situ sol–gel fabrication and morphological study

Seyedjamali

Pirisedigh

2012

Colloid Polym Sci

Self Cite

View full text Add to dashboard Cite

In the presented study, 3,5-diamino-N-(4-methyl-1-oxo-1-(phenylamino)pentan-2-yl)benzamide (V) as a new diamine monomer is synthesized and fully characterized by means of FT-IR, 1 H-NMR, 13 C-NMR, and elemental analysis techniques. The stated diamine is used for the sol-gel fabrication of a series of polyimide (PI)/titania nanohybrid films with various titania percentages. The special design of diamine monomer containing bulky pendant group increased the flexibility of resulted PI matrixes. On the other hand, the ability to construct strong organic/inorganic Hbond lattice has led to the effective surrounding of nanoparticles by PI grounds and thus the well-dispersed quite spherical nanoparticles were created via a sol-gel procedure. The obtained nanocomposites showed high thermal stability and UV-vis absorption efficiency. The X-ray diffraction experiments confirmed the titania nanoparticles to be amorphous.

show abstract

Section: Uv-vis Spectroscopymentioning

confidence: 98%

Section: Xrd Patternsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Well-dispersed polyimide/TiO2 nanocomposites: in situ sol–gel fabrication and morphological study

Seyedjamali

Pirisedigh

2012

Colloid Polym Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…The behavior of amines as adsorbates on TiO 2 nanosystems has recently attracted considerable interest, since they are widely used as nitrogen source in the synthesis of N-doped TiO 2 nanocrystals, acting either as precursors or as post-synthetic modifying agents [17][18][19][20], and also because polymers containing amino groups are often employed together with TiO 2 nanoparticles in nanocomposite materials [21][22][23][24]. Moreover, new promising solid-state sensitized solar cells rely on hybrid organic/ inorganic perovskite materials that are composed of methylammonium, lead cations and halide anions [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

First-principles study of trimethylamine adsorption on anatase TiO2 nanorod surfaces

et al. 2015

View full text Add to dashboard Cite

Titanium dioxide (TiO2) nanorods are widely employed in many energy-related applications thanks to their peculiar electronic and physicochemical properties. Here we report a periodic DFT and DFT-D study of the three most exposed surfaces of stoichiometric anatase TiO2 nanorods, i.e., (100), (001) and (101). On these surfaces, we investigated the adsorption of a tertiary amine (trimethylamine, TMA): Energetic, structural and electronic features have been characterized, paying particular attention on the effects of dispersion forces on the adsorption process. We found evidence of the formation of a coordinative bond between the molecules and the titanium site of adsorption. As expected, the inclusion of dispersion correction strongly enhances the adsorption process. Moreover, in some cases TMA adsorption introduces new electronic states at the edge of the valence band. Overall, our results provide new insights on the interactions between TiO2 nanorods and nitrogen compounds, which have many scientific and technological implications

show abstract

Effective incorporation of TiO₂ nanoparticles into polyamide thin‐film composite membranes

Kim

Lee

Bano

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

The effectiveness of TiO2 nanoparticles in improving the performance of polyamide (PA) thin‐film composite (TFC) membranes has been investigated. PA TFC membranes were prepared by interfacial polymerization with m‐phenylenediamine (MPD) and 1,3,5‐benzene tricarbonyl trichloride (TMC) where TiO2 particles were added during and after interfacial polymerization. To distribute the TiO2 nanoparticles uniformly in the PA films, colloidally stable TiO2 sols were synthesized and added to the aqueous MPD solution rather than to an organic TMC solution. Through the use of different incorporation methods, TiO2 particles were located on the top surface, in PA film layer, and in both positions. In the case of dense PA layers, the hydrophilicity of the membranes was significantly improved due to the presence of TiO2 particles, resulting in an increased water flux. On the other hand, the enhancement of water flux was less significant when TiO2 particles were incorporated into a loose PA film that was prepared with additives. In addition, a BSA fouling test confirmed that TiO2 nanoparticles effectively improve the antifouling properties of the membranes for both dense and loose PA films. This effect is possibly due to increased hydrophilicity, covering of the fouling space, and a reduction in surface roughness. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43383.

show abstract

In situ sol–gel fabrication of new poly(amide–ether–imide)/titania (TiO2) nanocomposite thin films containing l-leucine moieties

Cited by 19 publications

References 47 publications

Well-dispersed polyimide/TiO2 nanocomposites: in situ sol–gel fabrication and morphological study

Well-dispersed polyimide/TiO2 nanocomposites: in situ sol–gel fabrication and morphological study

First-principles study of trimethylamine adsorption on anatase TiO2 nanorod surfaces

Effective incorporation of TiO₂ nanoparticles into polyamide thin‐film composite membranes

Contact Info

Product

Resources

About

In situ sol–gel fabrication of new poly(amide–ether–imide)/titania (TiO2) nanocomposite thin films containing l-leucine moieties

Cited by 19 publications

References 47 publications

Well-dispersed polyimide/TiO2 nanocomposites: in situ sol–gel fabrication and morphological study

Well-dispersed polyimide/TiO2 nanocomposites: in situ sol–gel fabrication and morphological study

First-principles study of trimethylamine adsorption on anatase TiO2 nanorod surfaces

Effective incorporation of TiO2 nanoparticles into polyamide thin‐film composite membranes

Contact Info

Product

Resources

About

Effective incorporation of TiO₂ nanoparticles into polyamide thin‐film composite membranes