Zinc-Bisquinoline Coordination Assemblies of High Refractive Index and Film Uniformity

Thomsen, D. L.; Phely-Bobin, T.; Papadimitrakopoulos, Fotios

doi:10.1021/ja9810944

Cited by 55 publications

(33 citation statements)

References 34 publications

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“…Two strategies have been reported to incorporate metal ligand interactions into PEMMs, 1) utilization of metallo-supramolecular polymers as PE, and 2) utilization of the metal ligand interactions as driving force for LBL assembly. [41,42,43,44] In the first more classical approach, a charged metallo-supramolecular polymer is formed by the coordination of a bifunctional metal coordinating ligand with a metal ion to form a PE, which is subsequently used in LBL coating of multilayers with a classical anionic PE (figure 2). [45] Alternatively, the metal ligand coordination of cobalt or cupper ions have been utilized as driving force for the LBL assembly with poly(4-vinyl pyridine) (P4VP).…”

Section: Overview Of Common Pes For Pem Formation By Lblmentioning

confidence: 99%

Layer-by-layer preparation of polyelectrolyte multilayer membranes for separation

et al. 2014

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Polymer membranes provide a highly promising platform for the development of an efficient and sustainable technique for separation. Ideally such membranes combine a high flux with a high selectivity requiring thin defect-free membranes. The layer by layer (LBL) assembly technique has proven to be a versatile and simple method for the fabrication of very thin polyelectrolyte multilayers making it highly suitable for the preparation of separation membranes. Recent developments in this field related to membrane preparation and their applications in separation processes are presented and discussed in this review. An overview of the different fabrication techniques of such membranes will be first provided. In addition, the formation mechanism and the parameters that can be varied to tune the properties of the membranes will be discussed. Finally, the potential applications of these membranes in different separation areas such as pervaporation, nanofiltration, solvent resistant nanofiltration, reverse osmosis, gas separation and forward osmosis will be addressed

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Section: Overview Of Common Pes For Pem Formation By Lblmentioning

confidence: 99%

Layer-by-layer preparation of polyelectrolyte multilayer membranes for separation

et al. 2014

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“…It is a simple and easy way to assemble oppositely charged species into hybrid films with well-controlled, nanometerscale architectures and tailored properties for potential applications in various photoelectronic and magnetic materials and related devices. [7][8][9][10][11] Therefore, countless numbers of research groups have utilized this approach to attain functional nanostructures composed of metals, semiconductors, magnetic materials, molecular dyes and polymers, which retained the distinctive optical, magnetic and electrical qualities of the starting nanomaterial. [12][13][14] Recently, the LBL technique has been widely used to produce various nanoparticle-polymer composite films, by the sequential adsorption of nanoparticles and polyelectrolyte, [15][16][17] and to examine the use of these films as substrates for surfaceenhanced Raman scattering (SERS) measurements.…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Photoelectric Properties of an Electrostatically Self-Assembled Film Based on Tungstophosphoric Acid and a Binuclear Ru(II) Complex

Yu²,

Lin³

et al. 2011

J. Nanosci. Nanotech.

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An electrostatically self-assembled film based on tungstophosphoric acid (PTA) and a binuclear Ru(II) complex RuL was prepared and characterized by UV-vis absorption spectroscopy and cyclic voltammetry. A linear increase in the UV-vis absorbance with the number of deposited layers indicated that the film deposition was uniform and reproducible. The cyclic voltammogram demonstrated that PTA and the binuclear Ru(II) complex assembled in the film were redox active with surface confined characteristics. The photoelectrochemical properties and mechanism of photocurrent generation have also been studied. A five-layer (PTA/RuL)5 film on the ITO was found to exhibit a large cathodic photocurrent density of 5.32 microA/cm2 while irradiated with polychromatic light (730 nm > lambda > 325 nm) at an applied potential of -0.3 V versus saturated calomel electrode. The photocurrent action spectrum was in agreement with metal-to-ligand charge-transfer (MLCT) band of RuL in the absorption spectrum, which indicated that the photocurrent was generated based on MLCT excitation of the RuL in the film. It is noteworthy that the incident monochromatic photon-to-current conversion efficiency was calculated to be 1.1% at a wavelength of 450 nm.

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“…[2,5] In recent years, the preparation of inorganic/organic hybrid materials with high refractive index has attracted considerable attention. [5][6][7][8][9][10][11][12][13][14][15][16] In particular, TiO 2 , as inorganic domains, was incorporated into a polymer matrix to synthesize high refractive index hybrid materials through a sol-gel process. [10][11][12][13][14][15][16] A series of polymer-titania hybrid materials, including TiO 2 -poly(arylene ether ketone), [10] TiO 2 -poly(arylene ether sulfone), [10] TiO 2 -poly(methyl methacrylate) [15,17] and TiO 2 -aminoalkoxysilane cappedpyromellitic dianhydride [16] have been thoroughly studied using this method.…”

Section: Introductionmentioning

confidence: 99%

Research on Preparation, Structure and Properties of TiO₂/Polythiourethane Hybrid Optical Films with High Refractive Index

Lü

Cui

Guan

et al. 2003

Macro Materials & Eng

128

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Hybrid optical films of TiO2‐triethoxysilane‐capped polythiourethane (TCPTU) with high refractive indices have been prepared via an in situ sol‐gel method. The high refractive index triethoxysilane‐capped polythiourethane (TCPTU) was synthesized by polyaddition of the triethoxysilane‐modified trimercaptothioethylamine (TMTEA) and 2,2′‐dimercaptoethylsulfide (MES) with 2,4‐tolylene diisocyanate (TDI). The titania content in the hybrid films can be adjusted from 0 to 80 wt.‐% by the feed ratio of titania precursor [Ti(OBu)4] to polymer (TCPTU). Both FTIR and DSC analyses indicate that there is chemical bonding between the titania domain and the polymer chain. TGA results suggest that the titania of high content was successfully incorporated into polymer matrices and this series of hybrid films have good thermal properties. AFM measurements indicate that in the hybrid films the titania domains are of nanosize scale and the domain size averagely decreases from 60–80 nm to 5–20 nm with increasing content of titania, and the variation of surface roughness for the hybrid films has the same trend. These may be relative to the content of TCPTU and the interaction between titania and polymer (TCPTU). The refractive indices of the hybrid films at 632.8 nm increased from 1 632 to 1 879 as the titania content varied from 0 to 80 wt.‐%.AFM image of the hybrid film.magnified imageAFM image of the hybrid film.

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Zinc-Bisquinoline Coordination Assemblies of High Refractive Index and Film Uniformity

Cited by 55 publications

References 34 publications

Layer-by-layer preparation of polyelectrolyte multilayer membranes for separation

Layer-by-layer preparation of polyelectrolyte multilayer membranes for separation

Preparation, Characterization, and Photoelectric Properties of an Electrostatically Self-Assembled Film Based on Tungstophosphoric Acid and a Binuclear Ru(II) Complex

Research on Preparation, Structure and Properties of TiO₂/Polythiourethane Hybrid Optical Films with High Refractive Index

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Zinc-Bisquinoline Coordination Assemblies of High Refractive Index and Film Uniformity

Cited by 55 publications

References 34 publications

Layer-by-layer preparation of polyelectrolyte multilayer membranes for separation

Layer-by-layer preparation of polyelectrolyte multilayer membranes for separation

Preparation, Characterization, and Photoelectric Properties of an Electrostatically Self-Assembled Film Based on Tungstophosphoric Acid and a Binuclear Ru(II) Complex

Research on Preparation, Structure and Properties of TiO2/Polythiourethane Hybrid Optical Films with High Refractive Index

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Research on Preparation, Structure and Properties of TiO₂/Polythiourethane Hybrid Optical Films with High Refractive Index