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Porous liquid is a unique liquid medium that combines permanent porosity of porous solid with the uidity of liquid, and this special characteristic makes it potential in various applications. Here we report the rst photoresponsive porous ionic liquid (PPIL) by solubilizing photoresponsive metal-organic polyhedron (PMOP, constructed from dicopper and azobenzene-containing carboxylate) in polyethyleneglycol-functionalized bulky ionic liquid (IL). Owing to favorable ion interactions, bulky IL molecules encircle outside PMOP cages, and the inter cavities are maintained. The azobenzene moieties can be isomerized freely in the obtained PPILs to expose and shelter active sites upon visible and UV light irradiations. Hence, the adsorption capacity of PPILs is controllable by light irradiation, and the change in CO 2 uptake is up to 30% which is different from neat IL with negligible change. This study might inspire the development of new adsorption process regulated by light instead of conventional pressure and temperature swing adsorption technologies. Full TextPorous liquids have drawn increasing attention owing to the combination of porous solid and uid which furnishes resulting owing system eternal porosity. [1][2][3][4] The permanent pores endow uids with subsidiary physicochemical properties, rendering as suitable solitary media for a variety of applications like adsorption and catalysis. [5][6][7] Intrinsic cavities in uidic systems can be generated by three methods, that is, porous hosts' functionalization (type I) as well as their solubilization (type II) or dispersion (type III) in relatively size-excluded solvents. [8][9][10] In present, basic entities for rigid host structures are mostly from metal-organic frameworks, porous organic cages and zeolites, while chlorinated solvents and ionic liquids (ILs) are chosen as sterically hindered solvents. [11][12][13][14][15] Such combinations lead to the formation of a series of interesting porous liquids.Life systems are capable of modulating themselves to variable environments for survival. Inspiring by this, smart materials that can respond to external stimuli (e.g. temperature, light, and pH) with tunable features have been developed. [16][17][18][19][20] Among various external stimuli, light attracts great interest since it allows rapid and precise control with rare undesirable byproducts. [21][22][23][24] Azobenzene is a classic photoresponsive molecule, its con guration transformation between cis and trans isomer can be induced by ultraviolet (UV) and visible light irradiation. [25][26][27] On the basis of such con guration transformation, it is promising to construct azobenzene-based materials with tunable performance through sheltering and exposing active sites. [28][29][30][31][32] By introducing photoresponsive porous moieties to bulky liquids, it is expected to endow the uids with properties responsive to light. As a result, the adsorption process is possible to run by light irradiation, which is remotely controllable and much more energy-e cient in compar...

To improve the efficiency of electrolyte perturbed-chain statistical associating fluid theory–density functional theory (ePC-SAFT-DFT) calculation of the confined system, in this work, first, the Chebyshev pseudo-spectral collocation method was extended to the spherical pores. Second, it was combined with the Anderson mixing algorithm to accelerate the iterative process. The results show that the Anderson mixing algorithm can reduce the computation time significantly. Finally, based on the accelerated ePC-SAFT-DFT program, a systematic study of the effects of the temperature, pressure, pore size, and pore shape on the CO2 solubilities in the ionic liquids (ILs) confined inside the silica nanopores was conducted. Based on the simulation results, to obtain high CO2 solubilities in the ILs confined in silica, a better option is to use the silica material with a narrow spherical pore, and the IL-anion should be selected specifically considering that it has a more significant impact on the absorption enhancement effect.

The CO2 solubilities (including CO2 Henry’s constants) and viscosities in ionic liquids (ILs)/deep eutectic solvents (DESs)-based hybrid solvents were comprehensively collected and summarized. The literature survey results of CO2 solubility illustrated that the addition of hybrid solvents to ILs/DESs can significantly enhance the CO2 solubility, and some of the ILs-based hybrid solvents are super to DESs-based hybrid solvents. The best hybrid solvents of IL–H2O, IL–organic, IL–amine, DES–H2O, and DES–organic are [DMAPAH][Formate] (2.5:1) + H2O (20 wt %) (4.61 mol/kg, 298 K, 0.1 MPa), [P4444][Pro] + PEG400 (70 wt %) (1.61 mol/kg, 333.15 K, 1.68 MPa), [DMAPAH][Formate] (2.0:1) + MEA (30 wt %) (6.24 mol/kg, 298 K, 0.1 MPa), [TEMA][Cl]-GLY-H2O 1:2:0.11 (0.66 mol/kg, 298 K, 1.74 MPa), and [Ch][Cl]-MEA 1:2 + DBN 1:1 (5.11 mol/kg, 298 K, 0.1 MPa), respectively. All of these best candidates show higher CO2 solubility than their used pure ILs or DESs, evidencing that IL/DES-based hybrid solvents are remarkable for CO2 capture. For the summarized viscosity results, the presence of hybrid solvents in ILs and DESs can decrease their viscosities. The lowest viscosities acquired in this work for IL–H2O, IL–amine, DES–H2O, and DES–organic hybrid solvents are [DEA][Bu] + H2O (98.78 mol%) (0.59 mPa·s, 343.15 K), [BMIM][BF4] + DETA (94.9 mol%) (2.68 mPa·s, 333.15 K), [L-Arg]-GLY 1:6 + H2O (60 wt %) (2.7 mPa·s, 353.15 K), and [MTPP][Br]-LEV-Ac 1:3:0.03 (16.16 mPa·s, 333.15 K) at 0.1 MPa, respectively.

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Developing immobilized-ionic liquids (ILs) sorbents is important for CO2 separation, and prior theoretically screening ILs is desirable considering the huge number of ILs. In this study, the compressibility of ILs was proposed as a new and additional index for screening ILs, and the developed predictive theoretical model, i.e., electrolyte perturbed-chain statistical associating fluid theory, was used to predict the properties for a wide variety of ILs in a wide temperature and pressure range to provide systematic data. In screening, firstly, the isothermal compressibilities of 272 ILs were predicted at pressures ranging from 1 to 6,000 bar and temperatures ranging from 298.15 to 323.15 K, and then 30 ILs were initially screened. Subsequently, the CO2 absorption capacities in these 30 ILs at temperatures from 298.15 to 323.15 K and pressures up to 50 bar were predicted, and 7 ILs were identified. In addition, the CO2 desorption enthalpies in these 7 ILs were estimated for further consideration. The performance of one of the screened ILs was verified with the data determined experimentally, evidencing that the screen is reasonable, and the consideration of IL-compressibility is essential when screening ILs for the immobilized-IL sorbents.

Porous liquid is a unique liquid medium that combines permanent porosity of porous solid with the fluidity of liquid, and this special characteristic makes it potential in various applications. Here we report the first photoresponsive porous ionic liquid (PPIL) by solubilizing photoresponsive metal-organic polyhedron (PMOP, constructed from dicopper and azobenzene-containing carboxylate) in polyethylene-glycol-functionalized bulky ionic liquid (IL). Owing to favorable ion interactions, bulky IL molecules encircle outside PMOP cages, and the inter cavities are maintained. The azobenzene moieties can be isomerized freely in the obtained PPILs to expose and shelter active sites upon visible and UV light irradiations. Hence, the adsorption capacity of PPILs is controllable by light irradiation, and the change in CO2 uptake is up to 30% which is different from neat IL with negligible change. This study might inspire the development of new adsorption process regulated by light instead of conventional pressure and temperature swing adsorption technologies.

Background Laparoscopic cholecystectomy (LC) plus laparoscopic common bile duct exploration (LCBDE) is convenient in the treatment of cholelithiasis in combination with choledocholithiasis. It has the advantage of accelerated recovery. This retrospective study aimed to summarize the experience of cholelithiasis and choledocholithiasis treatment via LC plus LCBDE approach in Eastern China. Methods Patients diagnosed with cholelithiasis and choledocholithiasis between July 2019 and October 2021 at the Xishan People’s Hospital of Wuxi City were included in the study. During treatment, patients who received LC+LCBDE+primary suturing of the CBD were assigned to the LCBDE-P group, and those who received LC+LCBDE+T-tube drainage of CBD were assigned to the LCBDE-T group. The measurement data were compared between the two groups. P-values < 0.05 indicated statistical significance. Results A total number of 88 patients (48 females and 40 males) were divided into two groups: LCBDE-P (n=50) and LCBDE-T (n=38). Multiple linear regression analysis showed that LCBDE-P affected the risk-adjusted hospitalization stay (unstandardized coefficient, -5.352 days; 95% CI: -0.387 to -4.761; P < 0.001) and medical cost (unstandardized coefficient, -0.494 RMB; 95% CI: -0.712 to -0.277; P < 0.001) with significant differences. On the other hand, no significant differences were detected in the operation time, intraoperative hemorrhage, clearance rate of CBD stones, postoperative liver function, and postoperative complications (P > 0.05) between the two groups. Conclusions LCBDE is a safe and feasible strategy for the management of cholelithiasis and choledocholithiasis. Compared to LCBDE-T, LCBDE-P decreases hospital stays and medical costs during hospitalization.