Arkaprabha Giri- Indian Institute of Science Education and Research, Bhopal
Arkaprabha Giri
- Indian Institute of Science Education and Research, Bhopal
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29
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Introduction
Publications
Publications (29)
The worldwide detection of pharmaceutically active compounds in surface water, sub-surface water, and wastewater has become a global concern due to their widespread damaging effects on human and aquatic lives. This study aims to elucidate the role of adsorption techniques, specifically conventional stirring, and ultrasonication, in enhancing the ad...
This book provides an overview of technical sustainable water management in the Global South, mainly in India, and is structured in five sections: The current status and challenges for sustainable water management in IndiaNew-age materials for water and wastewater treatmentNew technologies for water and wastewater treatmentSensors for water quality...
Photocatalysts capable of harvesting a broad range of the solar spectrum are essential for sustainable chemical transformations and environmental remediation. Herein, we have integrated NIR‐absorbing upconversion nanoparticles (UCNP) with UV‐Vis absorbing conjugated porous organic polymer (POP) through the in situ multicomponent C−C coupling to fab...
Covalent organic frameworks (COFs) are a fast‐developing family of porous organic materials that have received substantial research interest during the last two decades. Dynamic covalent chemistry (DCC) is the cornerstone of COF fabrication. DCC is a process that entails reversible bond breaking‐reforming under equilibrium to attain the thermodynam...
Developing efficient adsorbent materials for iodine scavenging is essential to mitigate the threat of radioactive iodine causing adverse effects on human health and the environment. In this context, we explored N-rich two-dimensional covalent organic frameworks (COFs) with diverse functionalities for iodine capture. The pyridyl-hydroxyl-functionali...
Photocatalysts capable of harvesting a broad range of the solar spectrum are essential for sustainable chemical transformations and environmental remediation. Herein, we have integrated NIR‐absorbing upconversion nanoparticles (UCNP) with UV‐vis absorbing conjugated porous organic polymer (POP) through the in situ multicomponent C‐C coupling to fab...
Metal oxoanions adversely affect the food chain through bioaccumulation and biomagnification. Therefore, they are among the major freshwater contaminants that require immediate remediation. Although several adsorbents have been developed over the years for sequestering these micropollutants, the selective removal of oxoanions remains still a formid...
Dynamic covalent chemistry (DCC) opens up a fascinating route for the construction of well‐organized supramolecular architectures, starting from organic molecular cages to crystalline macromolecular covalent organic frameworks (COFs). Herein, for the first time, we have manifested a facile room‐temperature DCC‐directed transformation of discrete or...
Dynamic covalent chemistry (DCC) opens up a fascinating route for the construction of well‐organized supramolecular architectures, starting from organic molecular cages to crystalline macromolecular covalent organic frameworks (COFs). Herein, for the first time, we have manifested a facile room‐temperature DCC‐directed transformation of discrete or...
Porous organic polymers (POPs) have received increasing attention due to their properties, such as permanent porosity with tunable pore size, robust structure, high surface area, and versatility of the backbone for the desired function. Such properties prove to be quite valuable for a plethora of sustainable applications. POPs can largely be classi...
Catalysts play a pivotal role in achieving the global need for food and energy. In this context, porous organic polymers (POPs) with high surface area, robust architecture, tunable pore size, and chemical functionalities have emerged as promising testbeds for heterogeneous catalysis. Amorphous POPs having functionalized interconnected hierarchical...
Tuning the fluorescence of π-conjugated small organic molecules through the structural modifications and in the presence of external stimuli have found immense applications ranging from sensing, switching, optoelectronics to bioimaging. Herein, we demonstrated a simple design strategy for the synthesis of a pyrene-cyanostyrene-pyridine molecular tr...
A π-conjugated porous organic polymer (BCzBz) was fabricated employing N,N'-bicarbazole and benzothiadiazole as molecular building units exhibiting broad visible light absorption. The photostable, water-dispersible, and cytocompatible BCzBz was demonstrated as...
A heptazine‐based microporous polymeric network, HMP‐TAPA was synthesised by direct coupling of trichloroheptazine and tris(4‐aminophenyl)amine (TAPA). A high surface area of 424 m²/g was achieved, which is the highest surface area among heptazine‐based polymeric networks (HMPs). The tailored electron‐donor and ‐acceptor units in HMP‐TAPA give broa...
The advantages of the cage-to-network design strategy were demonstrated by knitting a waterwheel-like preporous molecular cage, noria, with a rigid aromatic linker to obtain a highly microporous organic polymer (NPOP, SBET: 748 ± 25 m2 g-1). The NPOP was employed for the catalytic conversion of CO2 to cyclic carbonates under solvent-free reaction c...
p>Nanoporous organic polymers with distinct morphologies are of immense interest for a broad spectrum of applications ranging from catalysis to molecular separation, energy storage, and energy conversion. However, developing facile and versatile methodologies to obtain well-orchestrated morphologies along with high specific surface area pertinent t...
Strategizing the exploitation of renewable solar light could undoubtedly provide new insight into the field of biomass valorization. Therefore, for the first time, we reported a heterogeneous photocatalytic oxidation route of renewable furfural (FUR) to produce industrial feedstocks maleic anhydride (MAN) and 5-hydroxy-2(5H)-furanone (HFO) under si...
![Figure 4. (a) Schematic route for the synthesis of calix[4]arene-based...](publication/346518284/figure/fig3/AS:983787970236416@1611564738349/a-Schematic-route-for-the-synthesis-of-calix4arene-based-porous-organic-polymers_Q320.jpg)
Supramolecular cavitands and organic cages having a well-defined cavity and excellent host–guest complexing ability have been explored for a myriad of applications ranging from catalysis to molecular separation to drug delivery. On the other hand, porous organic polymers (POPs) having tunable porosity and a robust network structure have emerged as...
Porous organic frameworks (POFs) with heteroatom rich ionic backbone have emerged as advanced materials for catalysis, molecular separation, and antimicrobial applications. The loading of metal ions further enhances Lewis acidity, augmenting the activity associated with such frameworks. Metal-loaded ionic POFs, however, often suffer from physicoche...
White light emitting (WLE) materials are of increasing interest owing to their promising applications in artificial lighting, display devices, molecular sensors, and switches. Typically, the three primary (red, green, and blue) or two complementary (e.g., yellow and blue or red and cyan) colored emissive units are combined to generate white light....
White light emitting (WLE) materials are of increasing interest owing to their promising applications in artificial lighting, display devices, molecular sensors, and switches. In this context, organic WLE materials cater to the interest of the scientific community owing to their promising features like color purity, long‐term stability, solution pr...
Porous organic frameworks (POFs) with heteroatom rich ionic backbone have emerged as advanced materials for catalysis, charge-specific molecular separation and antibacterial activity. The loading of metal ions further enhances Lewis acidity augmenting the activity associated with the frameworks. Metal-loaded ionic POFs however often suffer from phy...
Macrocyclic cavitands having aesthetically appealing architecture and excellent host-guest complexation ability exhibit a broad range of applications from molecular separation, catalysis, sensing to drug delivery. However, the close packing of the zero-dimensional (0D) porous cavitands reduces their activity in the solid state. Knitting the macrocy...
N-rich all-organic cages remain unexplored for CO2 fixation. Herein, the shape-persistent amine/imine cages were employed for the metal-free, cycloaddition of CO2 with epoxide to cyclic organic carbonates under solvent-free reaction...
Taking C -phenylresorcin[4]arene (RN4) as a model building block, we fabricated a series of porous organic polymers (POPs: RN4-OH, RN4-Az-OH, and RN4-F) where the surface area was enhanced up to ~8 folds (1229 m<sup>2 </sup>g<sup>-1</sup>) than that of the pristine cavitand (156 m<sup>2 </sup>g<sup>-1</sup>). The advantage of connecting the 0D poro...
A novel approach for the fabrication of a solution processable conjugated porous organic polymer (CzBDP) involving a flexible core comprised of carbazole and boron dipyrromethene was developed. The red emitting...
Questions
Question (1)
I have synthesized a series of porous organic polymers by tuning the linker length and observed a trend of variation of surface area (ultramicroporous, high surface area to mesoporous, low surface area) . I want to know that the pores of the polymers are interconnected or isolated from each other. TEM and SEM images are not as clear as to state that the pores are interconnected. Is there any techniques to prove the pore connectivity other than SEM and TEM? Is there any concept based on the BET isotherm analysis to prove that the pores are connected to each other?
