Polymer thin films for chromatographic separation of plant pigments

Ismayil, KM Muhammad; Manaf, O.; Sujith, A.; Antony, Rosy

doi:10.1016/j.matlet.2019.06.008

Cited by 11 publications

(2 citation statements)

References 10 publications

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“…Chromatographic separation is an elegant analytical technique, and plays an important role in various fields, including pharmaceuticals, chemical engineering and environmental monitoring, for the purpose of purification. 201,202 The effectiveness and isolation ability of the chromatographic technique mainly relies on the stationary phase 203 which predominantly includes noncovalent interactions, for example hydrophobic, hydrophilic, size exclusion or the distinct chiral interactions existing between the stationary phase and the chemical substances. Therefore, important progress made in this field has mainly focused on exploring new stationary phases that can interact with different types of chemical.…”

Section: Applications Of Cof-based Compositesmentioning

confidence: 99%

Recent progress in the synthesis and applications of covalent organic framework-based composites

Ma,

Yang,

Huang

et al. 2024

Nanoscale

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Section: Applications Of Cof-based Compositesmentioning

confidence: 99%

Recent progress in the synthesis and applications of covalent organic framework-based composites

Ma,

Yang,

Huang

et al. 2024

Nanoscale

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“…Despite the well-documented investigation of Chla/PVA based solar cells [22][23][24], the details of Chla aggregates formed in PVA film are not understood well enough so far. This study aims at the temperaturemediated structure and function of Chla aggregates in PVA, which is an essential factor in constructing solar cells with excellent performance of light harvesting and stability.…”

Section: Introductionmentioning

confidence: 99%

Optical and structural properties of chlorophyll a aggregates in PVA film

Song,

Jiang,

et al. 2024

Phys. Scr.

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The aggregated properties of Chlorophyll a (Chla) in polymer play a pivotal role in light capture and transfer as photostable pigment sensitizers of solar power systems. Here, we embedded the natural Chla molecules (2×10-3 M) extracted from spinach leaves into polyvinyl alcohol (PVA) films by casting method under different temperature. UV–VIS, fluorescence, Circular Dichroism (CD) spectroscopy, and Transmission Electron Microscopy (SEM) have been applied to investigate the optical properties and aggregated structures in detail. The excited state dynamics of these aggregates in PVA were explored using Time-Correlated Single Photon Counting (TCSPC). The de-composited components from absorption, emission, TCSPC and the CD shapes in the study show the analogous characteristics to the photosystem of cyanobacteria in some papers that features a coexisting of several aggregates (dimer, oligomer, bulk oligomer), in which the proportion of bulk oligomer can be greatly promoted under lower temperature (0 ℃) due to the involvement of a large amount of water. The analysis of spectral and dynamical components reveals the bulk oligomer model of Chla in PVA, which is constructed from several oligomers by PVA chain and water. Besides, a specific red trapping center within bulk oligomer is proposed to perform capturing energy in 18 ps, which is located on the lowest end of energy flow and devotes large than 99% florescence in TCSPC.

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Covalent Organic Frameworks‐Based Membranes as Promising Modalities from Preparation to Separation Applications: An Overview

Rasheed

Khan

Ahmad

et al. 2022

The Chemical Record

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Covalent organic frameworks (COFs) are a promising class of porous crystalline materials made up of covalently connected and periodically protracted network topologies through organic linkers. The tailorability of organic linker and intrinsic structures endow COFs with a tunable porosity and structure, low density, facilely‐tailored functionality, and large surface area, attracting increasing amount of interests in variety of research areas of membrane separations. COF‐based membranes have spawned a slew of new research projects, ranging from fabrication methodologies to separation applications. Herein, we tried to emphasis the major developments in the synthetic approaches of COFs based membranes for a variety of separation applications such as, separation of gaseous mixtures, water treatment as well as separation of isomeric and chiral organic compounds. The proposed methods for fabricating COF‐based continuous membranes and columns for real world applications are also thoroughly explored. Finally, a viewpoint on the future directions and remaining challenges for COF research in the area of separation is provided.

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Polymer thin films for chromatographic separation of plant pigments

Cited by 11 publications

References 10 publications

Recent progress in the synthesis and applications of covalent organic framework-based composites

Recent progress in the synthesis and applications of covalent organic framework-based composites

Optical and structural properties of chlorophyll a aggregates in PVA film

Covalent Organic Frameworks‐Based Membranes as Promising Modalities from Preparation to Separation Applications: An Overview

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