Research

Research Interest

Encapsulation of ZnO and Ho:ZnO nanoparticles in the core of wrinkled mesoporous silica

Uniform ultra-small zinc oxide (ZnO) and holmium-doped zinc oxide (Ho:ZnO) nanoparticles were synthesized without the use of any capping agents. Subsequently, these nanoparticles were encapsulated in the core of WMS. The encapsulation of ZnO and Ho:ZnO nanoparticles creates fluorescence in the WMS. The presence of holmium in the Ho:ZnO@WMS enables easy neutron activation, thereby making these particles suitable for applications like imaging and radiotherapy.

Research Interest

Synthesis of wrinkled mesoporous silica encapsulated gold nanoparticles

Gold nanoparticles with varying particle sizes were synthesized and subsequently encapsulated in the core of the WMS. The resulting particles closely resemble the gold encapsulated mesoporous silica structures found in Marcellus shale. The study significantly contributes to understanding the natural formation. It was determined that the gold nanoparticles are exclusively encapsulated in the WMS core, showing a preference for fluorescent gold nanoparticles (< 2 nm).

Research Interest

Encapsulation of SPIONs in the core of wrinkled mesoporous silica

Magnetic WMS were synthesized by encapsulating superparamagnetic iron oxide nanoparticles (SPIONs) in the core. Iron oxide (Fe3O4) and cobalt-doped iron oxide (Co:Fe3O4)  nanoparticles were synthesized through the in-situ reduction of ferric chloride. This study highlights that the encapsulation of cobalt-doped SPIONs showed an increase in magnetization of ̴ 20% compared to undoped SPIONs.
 

Research Interest

Immobilization of tetraphenylethylene in mesoporous silica for intramolecular rotation restriction

Small molecule, tetraphenylethylene (TPE) was immobilized in the mesopores of the wrinkled mesoporous silica and biphenyl-modified wrinkled mesoporous silica (BPWMS). The fluorescent intensity of the immobilized TPE was observed to increase with higher concentrations, contrary to the behavior observed with other fluorophores. The study found that the intensity of TPE fluorescence was higher when immobilized in the BPWMS compared to the WMS.

Selected Publications

1.Rahaman, Md. N.; Siddiki, A. K. M. N. A.⃰; Ria, U. H.; Sultan, Md. Z.; Salam, Md. A.; A New and Efficient RP-HPLC Method for Riboflavin Analysis in Drug and Food Samples, J. Liq. Chromatogr. Relat. Technol. (Under Review)

2.Khatun, T.; Salam, Md. A.; Siddiki, A. K. M. N. A.⃰; Lysine and Salicylaldehyde based Schiff Base Complexes of Fe(II), Cd(II), Hg(II) and Co(II): Synthesis, Characterization, and Biological Evaluation, Dhaka Univ. J. Pharm. Sci. (Accepted)

3.Siddiki, A. K. M. N. A.; Poruri, V. S.; Balkus, K. J. Synthesis of Wrinkled Mesoporous Silica Encapsulated Gold Nanoparticles, J. Porous Mater. 2024, 31, 869–876. 

4.Siddiki, A. K. M. N. A.; Lin, J.; Balkus, K. J. Encapsulation of ZnO and Ho:ZnO Nanoparticles in the Core of Wrinkled Mesoporous Silica. Langmuir 2023, 39, 12956–12965.

5.Siddiki, A. K. M. N. A.; Islam, S.; Begum, S.; Salam, Md. A. Synthesis, Spectral Characterization, Thermal Behavior and Biological Activities Study of Ternary Metal Complexes of Alanine and 1,8-Diaminonapthalene with Co(III), Ni(II), Cu(II), Zn(II) and Cd(II). Mater. Today Proc. 2021, 46, 6374–6381.

6.Lin, J.; Peng, C.; Ravi, S.; Siddiki, A. K. M. N. A.; Zheng, J.; Balkus, K. J. Biphenyl Wrinkled Mesoporous Silica Nanoparticles for pH-Responsive Doxorubicin Drug Delivery. Materials 2020, 13, 1998.

7.Islam, S.; Siddiki, A. K. M. N. A.; Begum, S.; Salam, Md. A. Synthesis, Spectral Characterization and Thermal Behavior of Newly Derived La(III), Co(III) and Mn(II) Complexes with Schiff Base Derived from Methionine and Salicylaldehyde. Open J. Inorg. Chem. 2018, 08, 55–69.

8.Salam, A.; Assaduzzaman, Md.; Hossain, M. N.; Siddiki, A. K. M. N. A. Water Soluble Ionic Species in the Atmospheric Fine Particulate Matters (PM2.5) in a Southeast Asian Mega City (Dhaka, Bangladesh). Open J. Air Pollut. 2015, 04, 99–108.

9.Jahan, I.; Siddiki, A. K. M. N. A.; Naser, M. N.; Salam, Md. A. Bioaccumulation and Toxicity of Iron Salt on Shingi Fish Heteropneustes Fossils (Bloch) and Its Possible Impacts on Human Health. Bangladesh pharm. j. 2015, 18, 179–182.

10.Nawaz, Md. S; Islam, G. J.; Siddiki, A. K. M. N. A.; Yousuf, M. A.; Salam, Md. A. Synthesis and Characterization of Chlorocobaloximes Containing Phosphorous Donor Ligands as Possible Non-Organometallic Models of Vitamin B12. J. Eng. Sci. 2013, 04, 47-51.

11.Siddiki, A. K. M. N. A.; Rahman, Md. S.; Rahman, M. A.; Salam, A.; Salam, Md. A.; Yousuf, Md. A.; Islam, Md. F.; Arafat, Md. A. Synthesis and Antimicrobial Studies of Copper (II) Metal Complexes That Specifically Recognize Nucleic Acid Bases. Bangladesh pharm. j. 2012, 15, 83–87.