Photochromic molecules have shown much promise as molecular components of stimuli-responsive materials, but despite recent achievements in various photoresponsive quantitative conversion photochemical reactions solids is hampered by the lack intrinsic structural flexibility available to release stress and strain upon events. This issue remains one challenges developing solid-state materials. Here, we report a strategy realize crystalline materials showing reversible ultraviolet visible light...

The formation of macroscopic assemblies based on molecular recognition is promising in a wide variety fields materials science. Switching the selectivity increasing importance to produce highly functional materials. Here we show assembly using polyacrylamide gel modified with pyrenyl (Py) moiety (Py-gel) and gels possessing CD moieties (αCD-gel, βCD-gel γCD-gel) mixed solvent water dimethyl sulfoxide. Changing composition can switch Py-gel, because fractions monomer dimer Py surface depend...

Abstract Despite recent advances in the porous materials for efficient removal of dissolved organic pollutants from water, regeneration characteristics reuse with preventing secondary contamination remains a challenge. Here, novel supramolecular absorbents hydrophobic pore are prepared by self‐assembly propeller‐shaped aromatic amphiphiles. The assembly folded propeller provides mesoporous environment within segments, which is suitable waste water. efficiency found to be 92% and 90% ethinyl...

Scar contraction frequently happens in patients with deep burn injuries. Hitherto, porcine dermal extracellular matrix (dECM) has supplied microenvironments that assist wound healing but fail to inhibit scar contraction. To overcome this drawback, we integrate dECM into three-dimensional (3D)-printed analogues (PDA) prevent We have developed thermally gelled, non-rheologically modified powder (dECMp) inks and successfully transformed them PDA was endowed a micron-scale spatial structure. The...

Abstract Macroscopic pH‐responsive self‐assembly is successfully constructed by polyacrylamide(pAAm)‐based gels carrying dansyl (Dns) and β‐cyclodextrin (βCD) residues, which are represented as Dns‐gel βCD‐gel, respectively. βCD‐gel assemble together at pH ≥ 4.0, but disassemble ≤ 3.0. The adhesion strengths for pairs of Dns‐gel/βCD‐gel increase with increasing pH. fluorescence study on the model system pAAm modified 1 mol% Dns moieties (pAAm/Dns) reveals that residues protonated a lower pH,...

Peptide–metal–organic framework (Pep-MOF) motors, whose motions are driven by anisotropic surface tension gradients created via peptide self-assembly around frameworks, can rotate microscopic rotors and magnets fast enough to generate an electric power of 0.1 μW. A new rigid Pep-MOF motor be recycled refilling the fuel into nanopores MOF.

The interaction of polyacrylamide(pAAm)-based gel modified with benzyl (Bz) moiety (Bz(x)-gel, where x denotes the mol % content Bz moiety) a pAAm-based possessing cyclodextrin (CD) moieties (αCD-gel, βCD-gel, and γCD-gel) was investigated at various temperatures to elucidate effect temperature on formation macroscopic assembly. Bz(x)-gel CD-gels stronger lower temperature, consistent binding constants for model system pAAm 1 native CDs. Bz(15)-gel interacted only βCD-gel higher (<ca. 90...

High toughness with self-healing ability has become the ultimate goal in materials research. Herein, thermoplastic polyurethane (TPU) was linked via host-guest (HG) interactions to increase its mechanical properties and ability. TPU HG prepared by step-growth bulk polymerization of hexamethylene diisocyanate (HDI), tetraethylene glycol (TEG), between permethylated amino βCD (PMeAmβCD) adamantane amine (AdAm). 10 mol% (HG(10)) showed highest rupture stress fracture energy (GF) 11 MPa 25...

Recently, nanoscale metal organic frameworks have attracted considerable attention as a novel drug delivery system platform owing to their highly efficient loading and capacities. However, low dispersity in aqueous media, poor biocompatibility, non-active targeting ability seriously limit further clinical application. To address these issues, hyaluronic acid (HA)-coated ZIF-8 nanocomposite (CCM@ZIF-8/HA) was successfully developed for use anti-cancer treatment through curcumin (CCM)...

Macroscopic molecular recognition observations were realized using polyacrylamide-based gels modified with α-cyclodextrin (α-CD), β-cyclodextrin (β-CD), 1-naphthylmethyl (1Np), and 2-naphthylmethyl (2Np) moieties, which are denoted as αCD(x)-gel, βCD(x)-gel, 1Np(y)-gel, 2Np(y)-gel, where x y indicate the mol % of CD Np respectively. The αCD(5)-gel did not adhere to either 1Np(5)-gel or 2Np(5)-gel, whereas βCD(5)-gel interacted both form alternating checkered assemblies. Although difference...

The interactions of polyacrylamide- (pAAm-) based gels possessing cyclodextrin (CD) residues (CD-gels) with pAAm-based modified aromatic through amide and ester linkages (ArA-gels ArE-gels, respectively) were investigated to examine the effect linkage (i.e., ester) between pAAm gel scaffold. In present study, benzyl (Bz), 2-naphthylmethyl (Np), 9-phenanthrylmethyl (Ph), 1-pyrenylmethyl (Py) chosen as a series residues. αCD-gel did not interact notably ArA-gels ArE-gels in water. βCD-gel...

Abstract The transfer of chirality from individual molecules to macroscopic objects, and the recognition on scale have potential for many practical applications, but they are still key challenges chiral research community. Here we present a strategy visible by assembly using polyacrylamide-based gels modified with β-cyclodextrin (βCD-gel) d - or l -tryptophan (homochiral -Trp-gel), which differs most methods reported, e.g., colorimetric chromogenic methods, fluorescence, gel formation...

Ionic liquid gels (IGs) have received much attention due to their electrochemical properties. IGs previously reported were formed by chemically cross-linked structures. The ionic conductivity (σ) of was one order magnitude lower than that the native liquid. Supramolecular polymeric based on noncovalent bond cross-linkers potential realize higher σ values. We prepared supramolecular host–guest interactions. IG from bulk copolymerization complex between peracetylated γ-cyclodextrin (PAcγCD)...

We demonstrated a feasible method for providing polyrotaxanes (PRxs) with controlled threading ratio of cyclic molecules and chain length linear polymers by extending the in pseudo-PRx. This gave PRxs lower higher mobility compared to usual methods used previously high ratio. In addition, our PRx improved thermal stability despite low

Nanoscale metal-organic frameworks are considered for drug delivery due to their ultrahigh porosity and intrinsic biodegradability. However, the poor colloidal dispersity of these nanocarriers in aqueous media has limited further applications. In this study, a novel dextran-coated zeolitic imidazolate framework-8 (ZIF-8/Dex) nanoparticle was synthesized. The hydrated dextran shell, which linked through coordination bonds, improved particle reduced side effects caused by rapid disintegration....

A perfluorobutyl-functionalized two-dimensional porous coordination polymer (PCP), {[Cu(bpbtp)(L)(DMF)]·(DMF)}n (H2bpbtp = 2,5-bis(perfluorobutyl)terephthalic acid, L 2,5-bis(perfluorobutyl)-1,4-bis(4-pyridyl)benzene, DMF N,N-dimethylformamide) has been synthesized and structurally characterized. The pore surface of the PCP is decorated with pendant perfluorobutyl groups which fabricate a densely fluorinated nanospace resulting in unique gas sorption properties.

A supramolecular hydrogel was prepared by the introduction of host-guest interactions between polyrotaxane (PRx) having guest parts and poly(acrylamide) with cyclodextrin hosts. Although chemically cross-linked hydrogels did not adhere to each other at cut ends, adhered strongly even enduring their own weight. The recovery speed rupture stress for containing PRx faster than that without due movable cross-links. endure

The interaction of β- and γ-cyclodextrins (β-CD γ-CD, respectively) with polyacrylamide modified pyrenyl (Py) residues (pAAmPy) was investigated in a mixed solvent water dimethyl sulfoxide (DMSO) by steady-state fluorescence. In the absence CD, fluorescence spectra indicated that formation Py dimers became less favorable increasing volume fraction DMSO (x(DMSO)). at varying x(DMSO) CD concentrations β-CD γ-CD included monomeric dimeric residues, respectively. Using spectra, equilibrium...

Abstract Background and purpose To compare the setup errors clinical target volume (CTV) to planning (PTV) margins in image-guided radiotherapy (IGRT) for liver cancer using three-dimensional cone beam computed tomography (3DCBCT) four-dimensional (4DCBCT), explore advantages of 4DCBCT position verification irradiation. Materials methods Fifty-five patients with were enrolled. All patients’ CT, (4DCT) Magnetic Resonance (MR) simulation images collected. Image registration, delineation, plan...