123126-39-6Relevant articles and documents
A novel colorimetric and ratiometric fluoride ion sensor derived from gallic acid
Shi, Heng,Li, Xiangguo,Chen, Hongjin,Xing, Jieni,Zhang, Rui,Liu, Jian
, p. 597 - 602 (2021)
A novel colorimetric and ratiometric probe (SH-GA) for the fluoride ion detection was designed and synthesized from gallic acid. SH-GA exhibited a selective color change from colorless to yellow in the presence of F- among the eight anions (F-, Cl-, Br-, I-, H2PO4-, HSO4-, CH3COO-, and ClO4-), either in THF or DMF solutions. The binding stoichiometry between SH-GA and fluoride ions was determined to be 1?:?1, and the complexation constant was 1.5 × 103 M-1 in THF. The detection limit of the SH-GA probe reached as low as around 1 μM in THF. 1H NMR titration results and DFT calculations suggested a deprotonation process via hydrogen bonding interactions between the fluoride ion and amino group of SH-GA.
Phase selective organogel from an imine based gelator for use in oil spill recovery
Mondal, Sanjoy,Bairi, Partha,Das, Sujoy,Nandi, Arun K.
, p. 381 - 392 (2019)
Marine oil spills create a serious problem for the environment by destroying ecosystems, and the adulteration of fuel oils is also a serious problem, as the optimum performance of an engine is affected by damaging its parts. To save the environment and pr
Novel gallic-calixarene liquid crystals: Syntheses and conformation influences on mesomorphism
Fang, Xiaoting,Guo, Hongyu,Yang, Fafu,Wu, Yamin
, p. 6128 - 6131 (2015)
Three novel gallic-calixarene derivatives 5, 6 and 7 were prepared in yields of 57-76%. Their structures and conformations were confirmed by element analyses, IR, ESI-MS and NMR spectra. Compounds 5 and 6 with stable cone conformation show liquid crystall
Synthesis and self-assembly of shape amphiphiles based on POSS-dendron conjugates
Shao, Yu,Ding, Minyuan,Xu, Yujie,Zhao, Fangjia,Dai, Hui,Miao, Xia-Ran,Yang, Shuguang,Li, Hui
, (2017)
Shape has been increasingly recognized as an important factor for self-assembly. In this paper, a series of shape amphiphiles have been built by linking polyhedral oligomeric silsesquioxane (POSS) and a dendron via linkers of different lengths. Three conjugates of octahedral silsesquioxanes (T8-POSS) and dendron are designed and synthesized and are referred to as isobutyl T8-POSS gallic acid derivatives (BPOSS-GAD-1, BPOSS-GAD-2, BPOSS-GAD-3). These samples have been fully characterized by 1H-NMR, 13C-NMR, Fourier transform infrared (FT-IR) spectroscopy and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry to establish their chemical identity and purity. Driven by different interactions between POSS and dendron, ordered superstructure can be found upon self-assembly. The stabilities and structures of these samples are further studied by using differential scanning calorimetry (DSC), small-angle X-ray scattering (SAXS), wide-angle X-ray diffraction (WAXD), and molecular simulations. The results show that their melting points range from 74°C to 143°C and the molecular packing schemes in the assemblies can form lamellar structure of BPOSS-GAD-3 as determined by the different linkers.
Construction of Redox Responsive Vesicles Based on a Supra-Amphiphile for Enzyme Confinement
Pan, Tiezheng,Zou, Huixin,Sun, Hongcheng,Liu, Yao,Liu, Shengda,Luo, Quan,Dong, Zeyuan,Xu, Jiayun,Liu, Junqiu
, p. 871 - 875 (2017)
Redox responsive vesicles were constructed based on self-assembly of a supra-amphiphile built by the host- guest interaction between β-cyclodextrin and a ferrocene derivative. The structure and destruction-reconstruction reversibility of the “smart” vesicles were clearly characterized by electron microscopy and dynamic light scattering. Notably, these vesicles were proved to be capable of controlled release function and bringing protease resistance to the enzyme, showing great biocompatibility and promising applications.
Cubic phase formation from new hexacatenar metallomesogens based on cobalt 3,4,5-trialkoxybenzoate
Lin, Chien-Ho,Kao, Hsien-Chang,Sung, Wen-Te,Cheng, Yao-Wen,Wang, Wen-Jwu
, p. 26 - 32 (2015)
Cobalt complexes of Co(3Cn)2(MeOH)4, derived from 3,4,5-trialkyloxybenzoate ligand (noted as 3Cn) with n = 10, 12, 14 and 16, were synthesized and characterized. The crystal of Co(1C12)2(MeOH)4 were determined by means of x-ray single crystal analysis. It crystallizes in the monoclinic P21/c space group with a = 24.3271(19) ?, b = 14.0058(11) ?, c = 6.4612(4) ?, α = γ = 90o, β = 94.368(4)o, and Z = 2. The phase texture and mesogenic properties were detected by polarized optical microscopic and powder x-ray diffraction technique. It was found that these compounds display the cubic phases. Differential scanning calorimetric data indicated that these compounds were nearly room temperature liquid crystalline and with a very wide mesogenic phase range. Two 3,4,5-trialkyloxybenzaotes were coordinated to a cobalt ion to form novel hexacatenar metallomesogens. The solid-state structure confirmed that two monodentate carboxylate ligands and four methanol molecules coordinated to the cobalt ion to give a slight distorted octahedral geometry. The mesomorphic behavior are stable and exist over a wide temperature range, which is arranged in layers and exhibited enantiotropic cubic mesophase.
Viologen-based redox-active ionic liquid crystals forming columnar phases
Tanabe, Kana,Yasuda, Takuma,Yoshio, Masafumi,Kato, Takashi
, p. 4271 - 4274 (2007)
Viologens possessing three alkoxy chains at each terminal self-organize into columnar liquid-crystalline phases through nanophase segregation and electrostatic interactions. These viologens are redox-active and susceptible to two consecutive electrochemic
Synthesis and properties of hole-transporting triphenylamine-derived dendritic compounds
Reghu, Renji R.,Simokaitiene, Jurate,Grazulevicius, Juozas V.,Raisys, Steponas,Kazlauskas, Karolis,Jursenas, Saulius,Jankauskas, Vygintas,Reina, Antonio
, p. 135 - 142 (2015)
Materials based on triphenylamino core linked with different alkoxyphenyl-substituents through olefinic spacers were synthesised, and their thermal, photophysical and photoelectrical properties were investigated. The synthesized compounds showed relativel
Distance Matters: Biasing Mechanism, Transfer of Asymmetry, and Stereomutation in N-Annulated Perylene Bisimide Supramolecular Polymers
Aragó, Juan,Calbo, Joaquín,Cerdá, Jesús,Crassous, Jeanne,Doncel-Giménez, Azahara,Martínez, Manuel A.,Ortí, Enrique,Rodríguez, Rafael,Sánchez, Luis
supporting information, p. 13281 - 13291 (2021/09/03)
The synthesis of two series of N-annulated perylene bisimides (PBIs), compounds 1 and 2, is reported, and their self-assembling features are thoroughly investigated by a complete set of spectroscopic measurements and theoretical calculations. The study co
Mesoscale Frank-Kasper Crystal Structures from Dendron Assembly by Controlling Core Apex Interactions
Jun, Taesuk,Park, Hyunjun,Jeon, Seungbae,Jo, Seungyun,Ahn, Hyungju,Jang, Woo-Dong,Lee, Byeongdu,Ryu, Du Yeol
supporting information, p. 17548 - 17556 (2021/11/04)
Single-component polymeric materials open up a great potential for self-assembly into mesoscale complex crystal structures that are known as Frank-Kasper (FK) phases. Predicting the packing structures of the soft-matter spheres, however, remains a challen
Tweaking a BODIPY Spherical Self-Assembly to 2D Supramolecular Polymers Facilitates Excited-State Cascade Energy Transfer
Das, Gourab,Cherumukkil, Sandeep,Padmakumar, Akhil,Banakar, Vijay B.,Praveen, Vakayil K.,Ajayaghosh, Ayyappanpillai
supporting information, p. 7851 - 7859 (2021/03/08)
Excited state properties such as emission, exciton transport, electron transfer, etc., are strongly dependent on the shape, size and molecular arrangement of chromophore based supramolecular architectures. Herein, we demonstrate creation and control of distinct supramolecular energy landscapes for the reversible control of the excited-state emission processes through cascade energy transfer in chromophore assemblies, facilitated by an unprecedented solvent effect. In methylcyclohexane, a tailor-made Y-shaped BODIPY derivative self-assembles to form an unusual spherical architecture of 400–1200 nm size, which exhibits a single emission at 540 nm upon 475 nm excitation through a normal excitation deactivation process. However, in n-decane, the same BODIPY derivative forms two-dimensional supramolecular sheets, exhibiting multiple emission peaks at 540, 610, 650, 725 and 790 nm with 475 nm excitation due to cascade energy transfer. Further control on the morphology and excitation energy transfer is possible with variable solvent composition and ultrasound stimulation, resulting in enhanced near-infrared emission with an overall pseudo Stokes shift of 7105 cm?1.
