About
87
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1,317
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Citations since 2017
Introduction
Professor
Department of Chemistry
Bangladesh University of Engineering and Technology
(BUET), Dhaka-1000, Bangladesh
Additional affiliations
April 2009 - October 2011
Education
April 2006 - April 2009
Publications
Publications (87)
3-D colloidal amorphous arrays prepared from two different submicron-sized silica particles, exhibit a specific structural color that remains unchanged during the alternation of viewing angle (see figure). The refractive index in amorphous photonic material changes identically in all directions. This isotropic feature of the dielectric distribution...
This review addresses the potential development of polymer hydrogels in terms of fast stimuli responsiveness and superior mechanical properties. The slow response and mechanical weakness of stimuli-sensitive hydrogels have been considered as the main barriers for their further development and practical application. It has been a dream of scientists...
A novel type of thermosensitive polymer gel was fabricated using a hydrophilic polyrotaxane as a movable cross-linker and N-isopropylacrylamide (NIPA) as a monomer. An optical transparence, mechanical softness, abnormal swelling capacity, and unprecedentedly fast thermosensitivity are among the salient features of this new polyNIPA gel in compariso...
Stimuli-sensitive hydrogels changing their volumes and shapes in response to various stimulations have potential applications in multiple fields. However, these hydrogels have not yet been commercialized due to some problems that need to be overcome. One of the most significant problems is that conventional stimuli-sensitive hydrogels are usually b...
An elastomer is a three-dimensional network with a cross-linked polymer chain that undergoes large deformation with a small external force and returns to its original state when the external force is removed. Because of this hyperelasticity, elastomers are regarded as one of the best candidates for the matrix material of soft robots. However, the c...
Exploring bio-inspired nanomaterials (BINMs) and incorporating them into micro/nanodevices represent a significant development in biomedical applications. Nanomaterials, engineered to imitate biological structures and processes, exhibit distinctive attributes such as exceptional biocompatibility, multifunctionality, and unparalleled versatility. Th...
Hydrogels have gained significant attention in scientific communities for their versatile applications, but several challenges need to be addressed to exploit their potential fully. Conventional hydrogels suffer from poor mechanical strength, limiting their use in many applications. Moreover, the crosslinking agents used to produce them are often t...
Nanostructured materials have proven great potential in healthcare and biomedical applications for the last few decades. Extensive investigations have been conducted to explore the benefits and suitability of nanostructured materials to be utilized in manufacturing biomedical and healthcare products for vaccines, drug delivery systems, tissue engin...
Vaccination is a significant advancement in medical filed that helps to save countless lives by bolstering the protective capabilities of the human immune system. The successful clinical implementation of vaccines developed for coronavirus disease (COVID-19) based on lipid nanoparticles shows the exciting future of nanotechnology in vaccine researc...
Over the last several decades, many self-healing materials, including nanocomposites, polymers, elastomers, hydrogels, and so on, have been developed using different approaches for various applications. A self-healing mechanism enables the integration of sufficient functionalities into the lateral chain of these products. Nanofillers boost the mech...
Every year, a large number of fire incidents occur all over the world. Fires initiated
from soft furnishings at residences, in particular, mattresses and furniture; cause
a large fraction of casualties. To minimize causalities of this kind, it is essential to
avoid the use of common polymeric foams participating in the fire. Conventional
fire-resis...
Day by day, the energy demand is exceeding due to consumption by increasing world population and fast-growing industrialization. As a result, the biggest problems of the 21st century are energy demand and how it affects the environment. The disquiet is caused by the excessive reliance on fossil fuels as raw materials for the production of energy, s...
Hydrogels are highly hydrated three dimensional networks with the ability to mimic the extracellular matrix of bodily tissues and have thus found application in a wide range of biomedical applications. Unique physiochemical properties such as biocompatibility, water permeability, stimuli responsiveness and self-healing characteristics make them esp...
The growth of photocatalysis has led to increased interest in photocatalysts due to their crucial role in environmental protection, therapeutic, energy generation, and industrial processes. Extensive research has been conducted to invent photocatalysts with outstanding properties and excellent photocatalytic performances to alleviate large-scale ap...
Polymeric hydrogel with the incorporation of nano to submicro-meter sized materials forms an exhilarating new generation of composite hydrogels. Most of the applications of hydrogels are in aqueous environments in which they swell to a very high degree. This emanates from low density of the polymer chains, making them highly inferior in terms of ph...
Nanotechnology is a relatively new but fast-expanding field that uses nanoparticles as analytical tools or as a controlled delivery system for pharmaceuticals. The unique properties of nanomaterials, including thermodynamic, electrical, structural capabilities, and optical make them intriguing options for pharmaceuticals, which substantially impact...
The automobile sector is continuously putting efforts into ensuring the safety and comfort of passengers, intelligent traffic guidance systems, pollution reduction, and successful recycling processes. The constructive and successful utilization of nanomaterials is an effective and potential scientific strategy that simplifies the technologies to de...
Nanotechnology is being explored widely to improve food packaging. The development of innovative packaging materials using nanotechnology has had remarkable growth in the last few years. For the last two decades, substantial scientific efforts have been placed into replacing bulk and conventional materials with eco-friendly and biodegradable nanote...
Objectives: To establish a facile route for synthesizing mechanically strong nanocomposite hydrogel using bio-friendly crosslinkers.
Methods: Firstly, nanocrystalline cellulose (NCC) has been synthesized by acid hydrolysis from naturally abundant materials like cellulose followed by silanization with 3-methacryloxypropyltrimethoxysilane (MPTS). Th...
The dissipation of energy via supramolecular bonds is the key to the toughness and strength of nature materials. Inspired from nature, there have been intensive efforts to develop polymeric soft yet tough, functional, and viscoelastic materials utilizing supramolecular chemistry. Supramolecular materials are, in most instances, mechanically too wea...
Generally, vaccinations are the most efficient prophylactic measures against infectiousdiseases. Despite the obvious advantages of vaccines, optimizations arerequired due to poor immunogenicity, instability, toxic effect, and the necessityfor multiple dose of a vaccine. Nanotechnology have currently been introducedinto vaccination research to addre...
Green polymer nanocomposites, referred to as completely biodegradable, renewable, environmentally friendly, and benign materials, have received a surge of attention to promote sustainable development. Polymer nanocomposites, where nanomaterials are used for reinforcement, possess a large interfacial area per volume and the intervals between the fil...
Natural fibers, originated from plant, animal, and geological processes, when incorporated with nanoparticles can offer benefits including lightweight, nonabrasive behavior, combustibility, nontoxicity, low density, increased thermal insulation, decreased skin inflammation, and biodegradability to end-use. The attractive features of natural fiber-r...
This review will focus on the rapid, selective, accurate, easy, affordable, versatile, and point-of-care diagnosis of COVID-19 using electrochemical, optical, magnetic, aptameric, and plasmonic nano-biosensors.
Next-generation wearable and stretchable electronics have attracted manufacturers and consumers. More than a decade of research in the fabrication of stretchable conductors has greatly improved the performance of stretchable electrical systems. Thin film technology with a thickness in the order of nanometers manifests unique physical and electrical...
Bread is one of the most popular foods consumed worldwide. It is a very popular foodstuff consumed in almost every house in Bangladesh as breakfast. Bread is prepared predominantly from flour to meet the daily carbohydrate demand and enhances its overall nutrition value using various ingredients. Potassium bromate (KBrO3) is an alluring additive to...
Dicarboxylate nanocrystalline cellulose (DCNC) polyelectrolytes were prepared from nanocrystalline cellulose (NCC) by introducing carboxylate units at the C-2 and C-3 positions of a glucose moiety through a two-step selective oxidation process. The polyelectrolyte nature of the DCNC was investigated by measuring the water uptake capacity with a cus...
To develop biopolymers for packaging materials, various biopolymers, biosynthetic polymers, chemosynthetic polymers, their blends, and composites have been studying for the last 2 decades. Natural polysaccharides are one of the most available and cheap materials found in nature. Here, a biopolymer film based on a natural polysaccharide, particularl...
Click reaction is a very fast, high yield with no by-product, biocompatible, tolerant to surrounded medium, and very specific cycloaddition reaction between azides and alkynes to form triazole. They are widely being employed in the synthesis of various polymeric materials. Here, the design, fabrication and characterization of hydrogel prepared usin...
A variety of methods for removing heavy metal ions from wastewater have been developed but because of their low efficiency, further production of toxic sludge or other waste materials, high expense, and lengthy procedures, limited progress has been achieved to date. Polymeric hydrogel has been attracting particular attention for the effective remov...
Hydrogels are three dimensional crosslinked polymeric networks that can imbibe large amounts of water but insoluble in any solvent. The hydrogel that responds to a large volume change in response to small changes in their external stimuli is known as smart hydrogel. It exhibits dramatic changes in their swelling behavior, network structure, permeab...
Hydrogel is advertently pertinent in numerous practical applications, but their breadth of use is often significantly restricted by their poor mechanical strength, including low toughness and reduced stretchability. A number of efforts to synthesize hydrogels with enhanced mechanical properties have already been rendered. However, a simple and wide...
Front Cover: In article 2000207, Abu Bin Imran and co‐workers report a double network hydrogel that simultaneously exhibits self‐healing, conducting, high mechanical strength, bioactive, and wound healing properties. Multifunctional hydrogel of this kind can be applied in manifold applications especially in biomedical and electronic sectors.
Nanocomposite hydrogels are a class of materials that are generally composed of hydrophilic polymers and nanofillers. They can have various important properties such as self‐healing, conductivity, toughness, bioactivity, facile processing ability, and this enables manifold practical applications. However, development of a single nanocomposite hydro...
Biodegradable polymeric films have great potential as alternatives to synthetic polymeric films to reduce environmental pollution. Plasticizing agents and nanofillers can improve the mechanical properties of polymer-based composites, resulting in materials with better flexibility and extensibility. Starch, a natural polymer, can be produced at low...
With the emergence of supramolecular chemistry and modern nanotechnology, a great deal of research has been conducted on idiosyncratic classes of molecular structures held together by non-covalent mechanical interactions. Examples include the catenanes, rotaxanes, and knots, which are termed mechanically interlocked molecules. Steadily but inevitab...
Carboxymethyl cellulose (CMC) based superabsorbent hydrogels have been drawing considerable attentions of scientists and technologists due to their versatile applications in both hygienic and non-hygienic purposes. Superabsorbent hydrogels are three-dimensional branched or linear polymeric hydrophilic network, which can absorb and retain large quan...
Carboxymethyl cellulose (CMC) based superabsorbent hydrogels have been drawing considerable attentions of scientists and technologists due to their versatile applications in both hygienic and non-hygienic purposes. Superabsorbent hydrogels are three-
dimensional branched or linear polymeric hydrophilic network, which can absorb and retain large qua...
We prepared building blocks with the ability to form a polymer network, a polyrotaxane (PR) structure that enhances the flexibility of the polymer network, and thermosensitive dangling chains that impart the polymer network with rapid sensitivity. First, thermosensitive poly(N-isopropylacrylamide) (PNIPA) was grafted from α-cyclodextrin, a cyclic m...
This work investigates the influence of the molecular weight of polyrotaxane (PR) cross-linkers on the extensibility of polymer gels. The polymer gels, which were prepared using PR cross-linkers of three different molecular weights but the same number of cross-linking points per unit volume of gel, have almost the same Young's modulus. By contrast,...
Nanomaterials represent a world of new possibilities and exciting opportunities. The problems facing mankind currently and those it will face in the future are and will be incredibly complex. As such, novel and innovative solutions to these problems will have to be explored. Problems centered, for example, in supplying enough energy or water in the...
Sulphite ion containing polyaniline nano-matrix was developed through galvanostatic method. Anilinium ion which is the prime electrolyte of the electrochemical synthesis was produced using
aniline and 0.1M sulphuricacid solution. Platinum plates were employed as a working as well as counter
electrode. A constant potential of 1.2V was applied alon...
A novel hydrogel has been fabricated using vinyl modified polyrotaxane as a cross-linker. A sparsely dispersed propylene oxide modified α-cyclodextrins which were threaded into the long polyethylene glycol (Mw = 35000) and were trapped by bulky 1-adamantanamine molecules was used as a hydrophilic polyrotaxane, HPR. HPR was modified by a small amoun...
A unique hydrogel has been synthesized using supramolecular polyrotaxane as the starting material. Sparsely dispersed α-cyclodextrins threaded into long polyethylene glycol axle (Mw=35000) trapped with a stable capping agent, 1-adamantanamine of polyrotaxane (PR) unit was used for this purpose. The modification of the hydroxyl groups of α-CDs of th...
Like other conventional smart materials, structural color showing smart materials inherit physical and chemical characteristics imposed by the templates. Smart Material such as structural colored gel made of photonic crystal (PC) as template, exhibits angle dependent structural color because the color arises from the Bragg optical diffraction of li...
This manuscript describes the preparation of new slide-ring gels by using a polyrotaxane as a cross-linker.
Here we report on a chromic slide-ring gel consisting of polyrotaxane by using a close-packed colloidal crystal as a template. In the slide-ring gel, the polymer chains with bulky end groups are not covalently cross-linked like chemical gels nor do they interact attractively like physical gels, but are topologically interlocked by figure-of-eight c...
名古屋大学博士学位論文 学位の種類:博士（工学）（課程） 学位授与年月日:平成21年3月25日
Questions
Questions (3)
Could you please recommend to me a few computational tools to simulate interactions of lights with microstructures? The wavelength of the light will be in the visible range and the microstructures could be crystalline or amorphous. Thanks in advance
I am interested to study the interactions of synthetic polymers (formed by radical polymerizations) and their interactions with various types of nanoparticles/ligands. Unfortunaley I couldnt find any suitable sites or software where the optimized structure of that synthetic polymers can be obtained so that I can study their interactions with various small molecules. There are many database on protein structures only. Using Gaussian /Gaussview software (considering gross approximation ) very limited calculation can be done. It would be higly appreciated if you kindly suggest me any sites or softwares where I can study these computationally. Thanking you
I am interested to study the interactions of synthetic polymers (formed by radical polymerizations) and their interactions with various types of nanoparticles/ligands. Unfortunaley I couldnt find any suitable sites or software where the optimized structure of that synthetic polymers can be obtained so that I can study their interactions with various small molecules. There are many database on protein structures only. Using Gaussian /Gaussview software (considering gross approximation ) very limited calculation can be done. It would be higly appreciated if you kindly suggest me any sites or softwares where I can study these computationally. Thanking you
