A5010821676- Radical Photochemical Reactions
- Photochemistry and Electron Transfer Studies
- Luminescence and Fluorescent Materials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Organic Light-Emitting Diodes Research
- Molecular Sensors and Ion Detection
- Free Radicals and Antioxidants
- Porphyrin and Phthalocyanine Chemistry
- Electrocatalysts for Energy Conversion
- Oxidative Organic Chemistry Reactions
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- Advanced battery technologies research
- Photochromic and Fluorescence Chemistry
- Gas Sensing Nanomaterials and Sensors
- Nanomaterials for catalytic reactions
- Perovskite Materials and Applications
- Asymmetric Synthesis and Catalysis
- Catalytic C–H Functionalization Methods
- CO2 Reduction Techniques and Catalysts
- Mosquito-borne diseases and control
- Ocular Diseases and Behçet’s Syndrome
- Curcumin's Biomedical Applications
- MXene and MAX Phase Materials
National Taiwan University
2015-2022
Beijing University of Chemical Technology
2022
Hangzhou Normal University
2015
By using the thiazolo[5,4-d]thiazole (TzTz) moiety as core of a proton acceptor, compounds 2,2′-(thiazolo[5,4-d]thiazole-2,5-diyl)bis(4-tert-butylphenol) (t-HTTH) and 4-tert-butyl-2-(5-(5-tert-butyl-2-methoxyphenyl)thiazolo[5,4-d]thiazol-2-yl)phenol (t-MTTH) have been strategically designed synthesized. Upon photoexcitation, both t-HTTH t-MTTH undergo reversible type excited-state intramolecular transfer (ESIPT), underlying mechanism which has verified by femtosecond early relaxation...
We report here, for the first time, experimental observation on excited-state intramolecular proton transfer (ESIPT) reaction of thiol in room-temperature solution. This phenomenon is demonstrated by a derivative 3-thiolflavone (3TF), namely, 2-(4-(diethylamino)phenyl)-3-mercapto-4H-chromen-4-one (3NTF), which possesses an -S-H···O═ H-bond (denoted dashed line) and has S1 absorption at 383 nm. Upon photoexcitation, 3NTF exhibits distinctly red emission maximized 710 nm cyclohexane with...
The design of efficient and sustainable Pt-based catalysts is the key to development direct methanol fuel cells. However, most still exhibit disadvantages including unsatisfied catalytic activity serious CO poisoning in oxidation reaction (MOR). Herein, highly porous PtAg nanoflowers (NFs) with rich defects are synthesized by using liquid reduction combining chemical etching. It demonstrated that proportion precursors determines inhomogeneity alloy elements, strong corrosiveness nitric acid...
Abstract Enhancing the catalytic activity of Pt‐based alloy by a rational structural design is key to addressing sluggish kinetics direct alcohol fuel cells. Herein, facile one‐pot method reported synthesize PtCuRu nanoflowers (NFs). The synergetic effect among Pt, Cu, and Ru can lower d‐band center regulate morphology, generate Ru‐rich edge, allow exposure more high index facets. optimized Pt 0.68 Cu 0.18 0.14 NFs exhibit outstanding electrocatalytic performances excellent anti‐poisoning...
Abstract We propose a new concept exploiting thermally activated delayed fluorescence (TADF) molecules as photosensitizers, storage units and signal transducers to harness solar thermal energy. Molecular composites based on the TADF core phenoxazine–triphenyltriazine (PXZ-TRZ) anchored with norbornadiene (NBD) were synthesized, yielding compounds PZDN PZTN two four NBD units, respectively. Upon visible-light excitation, energy transfer triplet state of occurred, followed by → quadricyclane...
The removal of Cr(VI) has attracted extensive attention since it causes serious harm to public health. Herein, we report a two-step method synthesize N-doped MoS2 nanoflowers (NFs) with controllable sizes, which are first utilized for and display outstanding performance. N-MoS2 NFs an average size 40 nm (N-MoS2 NFs-40 nm) can rapidly remove in 15 min under optimal conditions. maximum adsorption capacity reach 787.41 mg·g–1, is significantly larger than that NFs-150 -400 (314.46 229.88...
Abstract A series of compounds containing 5‐(2‐aminobenzylidene)‐2,3‐dimethyl‐3,5‐dihydro‐4 H ‐imidazol‐4‐one ( o ‐ABDI ) as the core chromophore with a seven‐membered‐ring N−H‐type intramolecular hydrogen bond have been synthesized and characterized. The acidity N−H proton thus hydrogen‐bond strength can be fine‐tuned by replacing one amino atoms substituent R, increasing electron‐withdrawing that is, in order H<COCH 3 <COPh<Tosyl<COCF . tosyl trifluoroacetyl derivatives undergo...
Abstract Finding a relationship between kinetics and thermodynamics may be difficult. However, semi‐empirical rules exist to compensate for this shortcoming, among which the Bell–Evans–Polanyi ( B‐E‐P ) principle is an example reactions involving bond breakage reformation. We expand new territory by probing photoinduced structure planarization (PISP) of series dibenz[ b , f ]azepine derivatives incorporating bent‐to‐planar rotation motion. The latter involves twisting partial double...
Abstract 3‐Hydroxythioflavone ( 3‐HTF ) was synthesized upon oxidation with selenium dioxide, in contrast to 3‐hydroxyflavone, a prototype molecule undergoing excited‐state intramolecular proton transfer (ESIPT) reaction. Also achieved were the syntheses of sulfone analogue and an interesting sulfonyl selane intermediate. Their structures fully characterized. showed ultrafast ESIPT property, as evidenced by >150 fs −1 reaction rate constant it solely exhibited proton‐transfer tautomer...
With the aim of generalizing structure-properties relationship bending heterocyclic molecules that undergo prominent photoinduced structural planarization (PISP), a series new dihydrodibenzo[ac]phenazine derivatives in which one nitrogen atom is replaced by oxygen (PNO), sulfur (PNS), selenium (PNSe), or dimethylmethanediyl (PNC) was strategically designed and synthesized. Compounds PNO, PNS, PNSe have significantly nonplanar geometries ground state, PISP to give planarlike conformer hence...
Searching for eight-membered ring π-conjugated hydrogen bonding (8-MR H-bonding) systems with excited-state intramolecular proton transfer (ESIPT) property is seminal and synthetically challenging. In this work, a series of molecules (8-HB-1, 8-HB-L1 8-HB-2) potentially possessing 8-MR H-bonding are strategically designed, synthesized characterized. The configurations these three potential checked by their X-ray structures, among which (a structurally locked 8-HB-1 core chromophore) proved...
Abstract Finding a relationship between kinetics and thermodynamics may be difficult. However, semi‐empirical rules exist to compensate for this shortcoming, among which the Bell–Evans–Polanyi ( B‐E‐P ) principle is an example reactions involving bond breakage reformation. We expand new territory by probing photoinduced structure planarization (PISP) of series dibenz[ b , f ]azepine derivatives incorporating bent‐to‐planar rotation motion. The latter involves twisting partial double...
Radical-initiated addition of CCl4, Cl3CBr, PhSH, and (TMS)3SiH to (bisisopropyl)silylenedioxy-tethered bis-methacrylate derivatives gives the corresponding eight-membered ring cyclic adducts stereoselectively. Hydrolysis halo-substituted with HCl in methanol affords valerolactones, stereochemistry was determined by X-ray crystallography on a dibromobenzoate derivative. DFT calculation radical intermediate offers plausible rationale for stereoselectivity reaction.
Abstract Treatment of diester substrate (I) with halogen reactants (II) under conditions A), i.e.