Highlights of 2021

(162)  Microporous and Mesoporous Materials, 327, 111445 (Q1, IF = 5.455)  

Zeolitic Imidazolate Frameworks as an Efficiently Platform for Potential Curcumin-Based On/Off Fluorescent Chemosensor
Duyen Thi Nguyen, Linh Dang Tran Nguyen, Tri Minh Le, Tan Le Hoang Doan, Linh Ho Thuy Nguyen                                                                                                                    
Abstract: Incorporating the fluorescent organic compound on the platform toward the capture of metal ions has become an attractive strategy for chemical sensors. Curcumin-based sensory platforms are fabricated chemo-sensors for the detection of cations and anions. Herein, the homogenous nanoparticle porous zeolitic imidazolate frameworks, ZIF-8 and ZIF-11 with a smaller than 100 nm particle size were used as platforms for curcumin loading......
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(161)  Polymer, 13(18), 3116  (Q1, IF = 4.329)

The efficacy of silver-based electrospun antimicrobial dressing in accelerating the regeneration of partial-thickness burn wounds  using a porcine model
Do Thien Nguyen, Tien Ho Minh, Do Thai Nguyen, Nghi Vo Dai, Hua Ha, Phan Thang, Tran Phong, Nguyen Hoai, Vo Van Toi, Nguyen, Thi-Hiep                                                                                                                     
Abstract: (1) Background: Wounds with damages to the subcutaneous are difficult to regenerate because of the tissue damages and complications such as bacterial infection. (2) Methods: In this study, we created burn wounds on pigs and investigated the efficacy of three biomaterials: polycaprolactone-gelatin-silver membrane (PCLGelAg) and two commercial burn dressings, Aquacel® Ag and UrgoTulTM silver sulfadiazine. In vitro long-term antibacterial property and in vivo wound healing performance were investigated...


(160)  Colloid and Interface Science Communications, 13 (18), 3116  (Q1, IF = 4.914)

Microwave-assisted solvothermal synthesis of defective zirconium-organic framework as a recyclable nano-adsorbent with superior adsorption capacity for efficient removal of toxic organic dyes
Linh Ho Thuy Nguyen, Hue Thi Thu Nguyen, Bao Quang Gia Le, Minh-Huy Dinh Dang, Trang Thi Thu Nguyen, Ngoc Xuan Dat Mai, Tan Le Hoang Doanm     
Abstract: Zirconium oxide based Metal–Organic Frameworks were synthesised using a rapid and efficient microwave-assisted solvothermal method that produced purer phases and higher quality crystalline products in significantly (>95%) less time than the conventional heating method. A new amino-functionalised analogue has been synthesised exclusively using this microwave-assisted methodology...

                                                                                                                                                                                                                                                                                     Load more...

Highlights of 2020

(116)  Advanced Electronic Materials, SCIE (Q1, IF = 6.593)  

Synthesis of 5-hydroxymethylfurfural from monosaccharides catalyzed by superacid VNU-11–SO4 in 1-ethyl-3-methylimidazolium chloride ionic liquid
Duyen Thi Nguyen, Linh Dang Tran Nguyen, Tri Minh Le, Tan Le Hoang Doan, Linh Ho Thuy Nguyen                                                                                                                    
Abstract: ISuperacid VNU-11–SO4, a modified metal–organic framework by post-synthetic treatment with a sulfuric acid solution, has been considered as a promising heterogeneous catalyst in the isomerization of glucose to fructose and further dehydration to form 5-hydroxymethylfurfural (HMF) due to its possession of both Lewis and Brønsted acid sites. In this work, we focused on using VNU-11–SO4 for the optimization of the conversion of fructose and glucose into HMF using an ionic liquid as a green solvent. The highest yields of HMF from glucose and fructose could be obtained in 28% (140 °C, 8 h) and 86% (110 °C, 3 h), respectively, with the use of VNU-11–SO4 catalyst in 1-ethyl-3-methylimidazolium chloride ionic liquid. Recycling examination of the catalyst showed only a slight decrease in the HMF yield, implying its potential industrial application in biomass transformation...


(115) Applied Surface Science, 2020, 537, 148000.  (Q1, IF = 6.707)

Improving memory performance of PVA:ZnO nanocomposite: The experimental and theoretical approaches
Nhu Phuong Le Pham Quynh, Tu Uyen Doan Thi, Kim My Tran, Hoang Nam Vu, Hanh Kieu Thi Ta, Cao Vinh Tran, Thang Bach Phan, Ngoc Kim Pham
Abstract: The interactions between organic and inorganic components of nanocomposites plays a key role in their microstructure and optoelectrical properties. The comprehensive understanding of these interactions can promote various potential applications of materials, especially in the field of electronic memory devices. In this study, we investigate the interactions of polyvinyl alcohol (PVA) and oxygen vacancy-rich ZnO nanoparticles (NPs) and resistive switching effect of PVA:ZnO nanocomposite. The density functional theory calculation indicates that the PVA chemisorption and the oxygen vacancies of ZnO play a key role in strongly reducing the work function of ZnO NPs of which conduction band can act as a bottom of potential well for trapping electrons in the PVA:ZnO nanocomposite.....


(114)  Materials Science and Engineering: B,  262, 114788  (Q1, IF = 4.051)

Experimental combined theoretical study on chemical interactions of graphene oxide with chitosan and its resistive-switching effect
Kim My Tran, Dinh Phuc Do, Hoang Nam Vu, The Toan Nguyen, Kieu Hanh Ta Thi, Bach Thang Phan, Pham Kim Ngoc 
Abstract: Recently, nanocomposite materials that consist of chitosan (CS) and graphene oxide (GO) have received immense attention in many fields of research, such as biomedicine, environmental studies, energy and electronics. In this paper, we study resistive memory devices in capacitor-like Ag/CS-GO/FTO structures, with the CS-GO nanocomposites acting as the memory layer. The devices showed a bipolar resistive-switching effect under an external electric field, with the endurance of 103 and ON/OFF ratio around 102...

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Highlights of 2019

(81) Asian Journal of Organic Chemistry, 8(12), 2276-2281  (Q2, IF = 3.319)

Microwave-Assisted Synthesis as an Efficient Method to Enhance the Catalytic Activity of Zr-based Metal-Organic Framework UiO-66 in a Heterocyclization Reaction
Linh Ho Thuy Nguyen, Trang Thi Thu Nguyen, Y Thi Dang, Phuong Hoang Tran and Tan Le Hoang Doan.                                                                                                                    
Abstract: Things you place in the microwave: The defect sites in zirconium-based metal-organic framework UiO-66 were effectively generated by microwave irradiation. This led to an increase the catalytic activity of the materials in the cyclization between anthranilate with carbonyl compounds, and the catalyst could be recycled and recovered without loss of activity after many runs...


(80)  Physical Chemistry Chemical Physics, 22, 1598-1610.  (Q1, IF = 3.676)

Mechano-chemical stability and water effect on gas selectivity in mixed-metal zeolitic imidazolate frameworks: a systematic investigation from van der Waals corrected density functional theory†
Diem Thi-Xuan Dang, Huong Thi-Diem Nguyen, Nam Thoai, Jer-Lai Kuo, Nhung Thi-Tuyet Nhung and Duc Nguyen Manh.     
Abstract: A series of Zn/Cu Zeolitic Imidazolate Frameworks (ZIFs) ZIF-202,-203, and -204 are systematically investigated by Density Functional Theory (DFT) with and without van der Waals (vdW) corrections. The elastic constants for non-solvent structures indicate that ZIF-202 and -204 are mechanically stable while ZIF-203 is unstable, which arises from the stiffness along the x-axis under a uniaxial strain in the PBE-D3 method. By considering the presence of solvents in ZIF-203, a structural phase transformation from a monoclinic to a triclinic structure is found which could be explained by the Jahn–Teller distortion....

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Highlights of 2018

(54)  Scientific Reports, 2018, 8:16651  

Monitoring Mechanical, Electronic, and Catalytic Trends in a Titanium Metal-Organic Framework Under the Influence of Guest-Molecule Encapsulation Using Density Functional Theory
Hieu C. Dong, Ha L. Nguyen, Hung M. Le, Nam Thoai, Yoshiyuki Kawazoe & Duc Nguyen-Manh.                                                                                                                  
Abstract: In this study, we conduct a density functional theory investigation to study the mechanical stability of a titanium-based metal-organic framework (MOF-901), which was hypothetically assumed to possess 2D characteristics. It is systematically found that the encapsulation of methanol enhances the mechanical stability of MOF-901 as the elastic tensors Cij of MOF-901∙MeOH are higher than the corresponding Cij quantities reported for solvent-free MOF-901. Moreover, the 2D characteristics of MOF-901 are confirmed by verifying the negative values of C33. At the same time, the bandgap of MOF-901 is observed to be solvent-dependent. In its pure form, MOF-901 possesses a direct gap (Eg) of 2.07 eV, with the valence and conduction bands mainly constituted by electrons of 4-aminobenzoate linkers Introducing methanol into MOF-901 causes distortion to the 4-aminobenzoate geometry, thereby induces electronic degeneracy to the conduction bands. Consequently, Eg is narrowed to 1.84 eV with 5.7 wt% MeOH or 1.63 eV with 11.4 wt% MeOH.....


(53)  RSC Mater. Chem. Front., 2018, 2, 2063-2069.  (Q1, IF = 6.482)

Reticular control of interpenetration in a complex metal-organic framework
Trang T. M. Nguyen; Hung M. Le, Yoshiyuki Kawazoe and Ha L. Nguyen.     
Abstract: Metal-organic frameworks (MOFs) are a new generation of crystalline porous materials covering a broad spectrum of research fields due to their high porosity and the feasibility of modification of their structure. Due to their large void spaces, MOF structures tend to be more stable when the crystals are grown to form interpenetrated frameworks. Control of interpenetrated frameworks in MOFs is not only useful for various kinds of practical applications but also provides insight towards understanding the reaction process and catenated behavior in MOF chemistry...

                                                                                                                                                                                                                                                                                     Load more...

Highlights of 2017

(31)  J. Vac. Sci. Technol. B, 2017, 35(2), 02B108-1-5.

Controlling color emission of InGaN/AlGaN nanowire light-emitting diodes grown by molecular beam epitaxy
Moab R. Philip, Dipayan D. Choudhary, Mehrdad Djavid, and Md Nasiruddin Bhuyian, James Piao, Thi T. Pham, Durgamadhab Misra and Hieu P. T. Nguyen.                                                                                                                   
Abstract: ABSTRACT The authors report on the achievement of full-color nanowire light-emitting diodes (LEDs), with the incorporation of InGaN/AlGaN nanowire heterostructures grown directly on the Si (111) substrates by molecular beam epitaxy. Multiple color emissions across nearly the entire visible wavelength range can be realized by varying the In composition in the InGaN quantum dot active region...


(30)  Journal of Elec Mater, 2017, 46:3345

Surface Functionalization of WO3 Thin Films with (3-Aminopropyl) triethoxysilane and Succinic Anhydride
Thi Kieu Hanh Ta, Thi Nhu Hoa Tran, Quang Minh Nhat Tran, Duy Phong Pham, Kim Ngoc Pham, Thi Thanh Cao, Yong Soo Kim, Dai Lam Tran, Heongkyu.    
Abstract: We report the effects of oxygen plasma treatment on the surface functionalization of WO3 thin films with (3-aminopropyl)triethoxysilane (APTES) and succinic anhydride (SA). X-ray diffraction and x-ray photoelectron spectroscopy results indicate the existence of the WO3 phase. Fourier transform infrared spectroscopy measurement shows clear bands at 1040 cm−1 (Si–O–Si), 1556 cm−1 (N–H), 1655 cm−1 (C=O), 2937 cm−1 (C–H), and 3298 cm−1 (N–H), confirming the surface functionalization efficiency enhanced by prior treatment of oxygen plasma...

                                                                                                                                                                                                                                                                                     Load more...

Highlights of 2016

(19) Chem. Mater., 2016, 28, 6243-6249.  (Q1, IF = 9.811)

High Methanol Uptake Capacity in Two New Series of Metal-Organic Frameworks: Promising Materials for Adsorption-Driven Heat Pump Applications
B. T. Nguyen, H. L. Nguyen, T. C. Nguyen, K. E. Cordova, and H. Furukawa,                                                                                                                 
Abstract: Two new series of metal-organic frameworks (MOFs), termed M-VNU-74-I and -II (where M = Mg, Ni, Co; VNU = Vietnam National University) were designed to expand the methanol uptake capacities with polar amide functionalities. The resulting MOFs is reticular to MOF-74, exhibited high porosity (up to 3000 m2 g–1) as well as the highest reported methanol uptake [>1 g g–1 or >400 cm3 cm–3]. As a representative example, Mg-VNU-74-II was shown to maintain remarkably high stability and methanol mass transfer capacity for at least 42 ad/desorption cycles (3 days). Indeed, these findings highlight the potential of such materials for practical use in adsorption heat pump applications...


(18) Inorganic Chemistry, 55, 12, 6201–6207  (Q1, IF = 5.165)

Mixed-Metal Zeolitic Imidazolate Frameworks and their Selective Capture of Wet Carbon Dioxide over Methane
N. T. T. Nguyen, T. N. H. Lo, J. Kim, H. T. D. Nguyen, T. B. Le, K. E. Cordova, H. Furukawa,   
Abstract: A presynthesized, square planar copper imidazole complex, [Cu(imidazole)4](NO3)2, was utilized as a precursor in the synthesis of a new series of zeolitic imidazolate frameworks, termed ZIF-202, -203, and -204. The structures of all three members were solved by single-crystal X-ray diffraction analysis, which revealed ZIF-203 and -204 having successfully integrated square planar units within the backbones of their respective frameworks. ...

                                                                                                                                                                                                                                                                                     Load more...

Highlights of 2015

(13)  J. Am. Chem. Soc.,2015, 137, 15394-15397.  (Q1, IF = 15.419)

Three-Dimensional Metal-Catecholate Frameworks and Their Ultrahigh Proton Conductivity
N. T. T. Nguyen, H. Furukawa, F. Gándara, C. A. Trickett, H. M. Jeong, K. E. Cordova, O. M. Yaghi,                                                                                                                     
Abstract: A series of three-dimensional (3D) extended metal catecholate (M-CATs) was synthesized by combining the appropriate metal salt and the hexatonic catecholate linker, H6THO (THO6– = triphenylene-2,3,6,7,10,11-hexakis(late)) to give Fe(THO)·Fe(SO4) (DMA)3, Fe-CAT-5, Ti(THO)·(DMA)2, Ti-CAT-5, and V(THO)·(DMA)2, V-CAT-5 (where DMA = dimethylammonium)...


(12)  Inorganic Chemistry, 54, 10065.  (Q1, IF = 5.165)

Synthesis and Selective CO2 Capture Properties of a Series of Hexatopic Linker-Based Metal-Organic Frameworks
P. T. K. Nguyen, H. T. D. Nguyen, H. Q. Pham, J. Kim, K. E. Cordova, H. Furukawa,    
Abstract: Four crystalline, porous metal-organic frameworks (MOFs), based on a new hexatopic linker, 1′,2′,3′,4′,5′,6′-hexakis(4-carboxyphenyl)benzene (H6CPB), were synthesized and fully characterized. Interestingly, two members of this series exhibited new topologies, namely, htp and hhp, which were previously unseen in MOF chemistry...

                                                                                                                                                                                                                                                                                     Load more...

Highlights of 2014

(5)  Journal of Molecular Catalysis A: Chemical, 395, 300. 

Propargylamine synthesis via direct oxidative C single bond C coupling reaction between N,N-dimethylanilines and terminal alkynes under metal–organic framework catalysis
G. H. Dang, D. T. Nguyen, D. T. Le, T. Truong, N. T. S. Phan                                                                                                                    
Abstract: MOF-199, a highly porous metal–organic framework based on copper ions, was used as a heterogeneous catalyst for the direct oxidative Csingle bondC coupling reaction via Csingle bondH functionalization between N,N-dimethylaniline and phenylacetylene to form N-methyl-N-(3-phenylprop-2-ynyl)benzenamine as the principal product...


(4)  Colloid and Interface Science Communications, 13 (18), 3116  (Q1, IF = 4.914)

Selective Capture of Carbon Dioxide under Humid Conditions by Hydrophobic Chabazite-Type Zeolitic Imidazolate Frameworks
N. T. T. Nguyen, H. Furukawa, F. Gándara, H. T. Nguyen, K. E. Cordova, O. M. Yaghi,    
Abstract: Hydrophobic zeolitic imidazolate frameworks (ZIFs) with the chabazite (CHA) topology are synthesized by incorporating two distinct imidazolate links. Zn(2-mIm)0.86(bbIm)1.14 (ZIF-300), Zn(2-mIm)0.94(cbIm)1.06 (ZIF-301), and Zn(2-mIm)0.67(mbIm)1.33 (ZIF-302), where 2-mIm=2-methylimidazolate, bbIm=5(6)-bromobenzimidazolate, cbIm=5(6)-chlorobenzimidazolate, and mbIm=5(6)-methylbenzimidazolate, were prepared by reacting zinc nitrate tetrahydrate and 2-mIm with the respective bIm link in a mixture of N,N-dimethylformamide (DMF) and water. Their structures were determined by single-crystal X-ray diffraction and their permanent porosity shown. All of these structures are hydrophobic as confirmed by water adsorption isotherms...

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Highlights of 2013

(2)  Nano Lett. 2013, 13, 5271. (Q1, IF = 4.329)

Dielectrophoresis-assembled zeolitic imidazolate framework nanoparticle-coupled resonators for highly sensitive and selective gas detection
Y. Hwang, H. Sohn, A. Phan, O. M. Yaghi, R. N. Candler                                                                                                                   
Abstract: This work reports on zeolitic imidazolate framework (ZIF)-coupled microscale resonators for highly sensitive and selective gas detection. The combination of microscale resonators and nanoscale materials simultaneously permits the benefit of a larger capture area for adsorption from the resonator and enhanced surface adsorption capacity from the nanoscale ZIF structure. Dielectrophoresis (DEP) was demonstrated as a novel method for directly assembling concentrated ZIF nanoparticles on targeted regions of silicon resonant sensors. As part of the dielectrophoretic assembly process, the first-ever measurements of the Clausius-Mossotti factor for ZIFs were conducted to determine optimal conditions for DEP assembly...


(1) J. Micromech. Microeng. 23 125027  (Q1, IF = 4.914)

Zeolitic Imidazolate Framework-Coupled Resonators for Enhanced Gas Detection
Y. Hwang, A. Phan, K. Galatsis, O. M. Yaghi, R. N. Chandler,    
Abstract: This work presents for the first time a zeolitic imidazolate framework (ZIF)-coupled resonant gas sensor whose sensitivity shows an improvement up to 78 times over bare silicon resonant sensors with identical dimensions. ZIFs are among the highest surface area material used for resonant-based sensing. We utilize high surface-area-to-volume ratios of ZIFs to demonstrate how a microresonator coupled with ZIF crystals can provide high sensitivity to chemical vapors...

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