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Gupta M, Daoo V, Singh JK. An amine decorated MOF for direct capture of CO 2 from ambient air. Dalton Trans 2023; 52:11621-11630. [PMID: 37551528 DOI: 10.1039/d3dt01455j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
A Zn(II)-based metal-organic framework (MOF) was synthesized by the self-assembly of the dicarboxylate ligand terephthalic acid (TPA), 2-aminoterephthalic acid (NH2-TPA) and N-donor auxiliary ligand 1,4-bis(4-pyridinylmethyl)piperazine (bpmp) using Zn(NO3)2·6H2O under hydrothermal conditions. {[Zn(TPA)0.5(NH2TPA)0.5(bpmp)]·DMF·7H2O}n (framework 1) has an sra topology with a BET surface area of 756 m2 g-1. The microporous nature of the framework is apparent from the significant CO2 adsorption capacities observed at various temperatures: 57 cc g-1 at 283 K, 46 cc g-1 at 293 K, 37 cc g-1 at 303 K, and 30 cc g-1 at 313 K. The considerable CO2 adsorption may be caused by the existence of free carboxylate and amine substituents that interact with the gas molecules and micropores. At room temperature, the activated MOF readily converts CO2 into cyclic carbonates when a suspension of the MOF is bubbled with ambient air and different epoxides under solvent-free conditions. The amine groups located within the pores of the MOF interact with CO2 molecules, enhancing their sorption and conversion to cyclic carbonates. However, due to interpenetration within framework 1, only smaller size epoxides can be accommodated and converted to cyclic carbonates in good yields. Additionally, the effectiveness of the catalyst is further confirmed by the positive outcomes obtained from the hot filtration control test. Grand canonical Monte Carlo (GCMC) molecular simulations were utilized to gain a better understanding of molecular interactions. GCMC results are in line with the experiments. The substantial adsorption of CO2 can be ascribed to the strong intermolecular interactions that occur between the amine groups within the framework and the CO2 molecules.
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Affiliation(s)
- Mayank Gupta
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| | - Varad Daoo
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| | - Jayant K Singh
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
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Kottilil D, Gupta M, Lu S, Babusenan A, Ji W. Triple Threshold Transitions and Strong Polariton Interaction in 2D Layered Metal-Organic Framework Microplates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209094. [PMID: 36623260 DOI: 10.1002/adma.202209094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Room-temperature interaction between light-matter hybrid particles such as exciton-polaritons under extremely low-pump plays a crucial role in future coherent quantum light sources. However, the practical and scalable realization of coherent quantum light sources operating under low-pump remains a challenge because of the insufficient polariton interaction strength. Here, at room temperature, a very large polariton interaction strength is demonstrated, g ≈ 128 ± 21 µeV µm2 realized in a 2D nanolayered metal-organic framework (MOF). As a result, a polariton lasing at an extremely low pump fluence of P1 ≈ 0.01 ± 0.0015 µJ cm-2 (first threshold) is observed. Interestingly, as pump fluence increases to P2 ≈ 0.031 ± 0.003 µJ cm-2 (second threshold), a spontaneous transition to a polariton breakdown region occurs, which has not been reported before. Finally, an ordinary photon lasing occurs at P3 ≈ 0.11 ± 0.077 µJ cm-2 (third threshold), or above. These experiments and the theoretical model reveal new insights into the transition mechanisms characterized by three distinct optical regions. This work introduces MOF as a new type of quantum material, with naturally formed polariton cavities, that is a cost-effective and scalable solution to build microscale coherent quantum light sources and polaritonic devices.
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Affiliation(s)
- Dileep Kottilil
- Department of Physics, National University of Singapore, 3, Science Drive 3, Singapore, 117542, Singapore
| | - Mayank Gupta
- Department of Physics, National University of Singapore, 3, Science Drive 3, Singapore, 117542, Singapore
| | - Shunbin Lu
- SZU-NUS Collaborative Innovation Centre for Optoelectronic Science and Technology, International Collaborative Laboratory of 2D Materials for Optoelectronic Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Anu Babusenan
- Department of Physics, National University of Singapore, 3, Science Drive 3, Singapore, 117542, Singapore
| | - Wei Ji
- Department of Physics, National University of Singapore, 3, Science Drive 3, Singapore, 117542, Singapore
- SZU-NUS Collaborative Innovation Centre for Optoelectronic Science and Technology, International Collaborative Laboratory of 2D Materials for Optoelectronic Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
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Jiang Z, Ren A, Yan Y, Yao J, Zhao YS. Exciton-Polaritons and Their Bose-Einstein Condensates in Organic Semiconductor Microcavities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106095. [PMID: 34881466 DOI: 10.1002/adma.202106095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Exciton-polaritons are half-light, half-matter bosonic quasiparticles formed by strong exciton-photon coupling in semiconductor microcavities. These hybrid particles possess the strong nonlinear interactions of excitons and keep most of the characteristics of the underlying photons. As bosons, above a threshold density they can undergo Bose-Einstein condensation to a polariton condensate phase and exhibit a rich variety of exotic macroscopic quantum phenomena in solids. Recently, organic semiconductors have been considered as a promising material platform for these studies due to their room-temperature stability, good processability, and abundant photophysics and photochemistry. Herein, recent advances of exciton-polaritons and their Bose-Einstein condensates in organic semiconductor microcavities are summarized. First, the basic physics is introduced, and then their emerging applications are highlighted. The remaining questions are also discussed and a personal viewpoint about the potential directions for future research is given.
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Affiliation(s)
- Zhengjun Jiang
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ang Ren
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongli Yan
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiannian Yao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Gupta M, Zhu Z, Kottilil D, Rath BB, Tian W, Tan ZK, Liu X, Xu QH, Ji W, Vittal JJ. Impact of the Structural Modification of Diamondoid Cd(II) MOFs on the Nonlinear Optical Properties. ACS APPLIED MATERIALS & INTERFACES 2021; 13:60163-60172. [PMID: 34874696 DOI: 10.1021/acsami.1c17327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A change in the degree of interpenetration (DOI) in metal-organic frameworks (MOFs) prompted by heat, pressure, or exchange of solvents is a fascinating phenomenon that can potentially impact the functional properties of MOFs. Structural transformation involving two noncentrosymmetric MOFs with different DOIs provides a rare opportunity to manipulate their optical properties. Herein, we report an unusual single-crystal-to-single-crystal (SCSC) transformation of a noncentrosymmetric 7-fold interpenetrated diamondoid (dia) Cd(II) MOF into another noncentrosymmetric but 8-fold interpenetrated dia MOF upon the removal of guest solvents. A hydrogen-bond network formed between the lattice solvents and linker trans-2-(4-pyridyl)-4-vinylbenzoate (pvb) in a 7-fold interpenetrated noncentrosymmetric MOF results in a significant increase in the two-photon absorption cross-section (11 times) as compared to that in the desolvated 8-fold interpenetrated MOF. Also, an increase in the DOI in the noncentrosymmetric crystals strengthened the π···π interaction between the individual diamondoid networks and enhanced the second-order nonlinear optical (NLO) coefficient (deff) by 4.5 times. These results provide a way to manipulate the optical properties of MOFs using a combined strategy of the formation of hydrogen bonds and interpenetration for access to tunable single-crystal NLO devices in an SCSC manner. By changing the experimental conditions, another dia Cd(II) MOF with 4-fold interpenetration can be isolated. In this centrosymmetric MOF, the olefin groups in the backbone of the ligand (pvb) undergo a [2 + 2] cycloaddition reaction quantitatively under UV light but in a non-SCSC fashion.
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Affiliation(s)
- Mayank Gupta
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Ziyu Zhu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Dileep Kottilil
- Department of Physics, National University of Singapore, Singapore 117542, Singapore
| | - Bibhuti Bhusan Rath
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Wang Tian
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Zhi-Kuang Tan
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Qing-Hua Xu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Wei Ji
- Department of Physics, National University of Singapore, Singapore 117542, Singapore
| | - Jagadese J Vittal
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
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Sample AD, Guan J, Hu J, Reese T, Cherqui CR, Park JE, Freire-Fernández F, Schaller RD, Schatz GC, Odom TW. Strong Coupling Between Plasmons and Molecular Excitons in Metal-Organic Frameworks. NANO LETTERS 2021; 21:7775-7780. [PMID: 34490777 DOI: 10.1021/acs.nanolett.1c02740] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This Letter describes strong coupling of densely packed molecular emitters in metal-organic frameworks (MOFs) and plasmonic nanoparticle (NP) lattices. Porphyrin-derived ligands with small transition dipole moments in an ordered MOF film were grown on Ag NP arrays. Angle-resolved optical measurements of the MOF-NP lattice system showed the formation of a polariton that is lower in energy and does not cross the uncoupled MOF Q1 band. Modeling predicted the upper polariton energy and a calculated Rabi splitting of 110 meV. The coupling strength was systematically controlled by detuning the plasmon energy by changing the refractive index of the solvents infiltrating the MOF pores. Through transient absorption spectroscopy, we found that the lower polariton decays quickly at shorter time scales (<500 ps) and slowly at longer times because of energy transfer from the upper polariton. This hybrid system demonstrates how MOFs can function as an accessible excitonic material for polariton chemistry.
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Affiliation(s)
| | | | | | | | | | | | | | - Richard D Schaller
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
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Alexander A, Gupta M, Kottilil D, Rath BB, Vittal JJ, Ji W. Anisotropic Two-Photon Absorption and Second Harmonic Generation in Single Crystals of Silver(I) Coordination Complexes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31891-31897. [PMID: 34189906 DOI: 10.1021/acsami.1c03686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Metal complexes have been gaining attention in recent times over the traditional inorganic materials such as nonlinear optical materials. Here, we report both two-photon absorption (2PA) and second harmonic generation (SHG) from single crystals of two Ag(I) complexes with considerable optical anisotropy. We demonstrate that by controlling the incident light polarization, the tunability between these two nonlinear optical processes can be achieved. The deff values of the observed SHG from one complex are determined to be one order of magnitude greater than β-BBO crystals.
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Affiliation(s)
- Aswin Alexander
- Department of Physics, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Mayank Gupta
- Department of Physics, National University of Singapore, 3 Science Drive 3, 117543, Singapore
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Dileep Kottilil
- Department of Physics, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Bibhuti Bhusan Rath
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Jagadese J Vittal
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Wei Ji
- Department of Physics, National University of Singapore, 3 Science Drive 3, 117543, Singapore
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Gupta M, Chatterjee N, De D, Saha R, Chattaraj PK, Oliver CL, Bharadwaj PK. Metal-Organic Frameworks of Cu(II) Constructed from Functionalized Ligands for High Capacity H 2 and CO 2 Gas Adsorption and Catalytic Studies. Inorg Chem 2020; 59:1810-1822. [PMID: 31965795 DOI: 10.1021/acs.inorgchem.9b03012] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Two Cu(II)-based metal-organic frameworks (MOFs) having paddle-wheel secondary building units (SBUs), namely, 1Me and 1ipr, were synthesized solvothermally using two new bent di-isophthalate ligands incorporating different substituents. The MOFs showed high porosity (BET surface area, 2191 m2/g for 1Me and 1402 m2/g for 1ipr). For 1Me, very high CO2 adsorption (98.5 wt % at 195 K, 42.9 wt % at 273 K, 23.3 wt % at 298 K) at 1 bar was found, while for 1ipr, it was significantly less (14.3 wt % at 298 K and 1 bar, 54.4 wt % at 298 K at 50 bar). 1Me exhibited H2 uptake of 3.2 wt % at 77 K and 1 bar of pressure, which compares well with other benchmark MOFs. For 1ipr, the H2 uptake was found to be 2.54 wt % under similar experimental conditions. The significant adsorption of H2 and CO2 for 1Me could be due to the presence of micropores as well as unsaturated metal sites in these MOFs besides the presence of substituents that interact with the gas molecules. The experimental adsorption behavior of the MOFs could be justified by theoretical calculations. Additionally, catalytic conversions of CO2 and CS2 into useful chemicals like cyclic carbonates, cyclic trithiocarbonates, and cyclic dithiocarbonates could be achieved.
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Affiliation(s)
- Mayank Gupta
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur 208016 , India
| | - Nabanita Chatterjee
- Centre for Supramolecular Chemistry Research (CSCR), Department of Chemistry , University of Cape Town , Cape Town , South Africa
| | - Dinesh De
- Department of Basic Science, Vishwavidyalaya Engineering College, Lakhanpur , Sarguja University , Lakhanpur , Chhattisgarh - 497116 , India
| | - Ranajit Saha
- Department of Chemistry and Center for Theoretical Studies , Indian Institute of Technology Kharagpur , Kharagpur 721302 , India
| | - Pratim Kumar Chattaraj
- Department of Chemistry and Center for Theoretical Studies , Indian Institute of Technology Kharagpur , Kharagpur 721302 , India.,Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
| | - Clive L Oliver
- Centre for Supramolecular Chemistry Research (CSCR), Department of Chemistry , University of Cape Town , Cape Town , South Africa
| | - Parimal K Bharadwaj
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur 208016 , India.,Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
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