Yingchun Liu

• Doctor of Philosophy
• Guangdong University of Technology

Materials capable of dynamic persistent luminescence (PersL) within the visible spectrum are highly sought after for applications in display, biosensing, and information security. However, PersL materials with eye-detectable and excitation-wavelength-dependent characteristics are rarely achieved. Herein, a nonstoichiometric compound CaGa x O 4 :Bi...

Developing cross-linked polymers with both low dielectric constant and degradability for microelectronics and sustainability remains a challenge. Herein, a new fluoro-containing dialdehyde monomer (VF) derived from vanillin was synthesized, which was then cross-linked with a tris (2-aminoethyl) amine (TREN) and different diamines (4, 4′-methylenebi...

Ultraviolet (UV) emitting persistent luminescence (PersL) materials have aroused significant interest, owing to their unique self-illuminating high-photo-energy feature under excitation-free conditions. In particular, the advent of X-ray as a charging...

Lignin is the most abundant natural phenolic polymer. However, the severe condensations of industrial lignin resulted in an undesirable apparent morphology and darker color, which hindered its application in the field of daily chemicals. Therefore, a ternary deep eutectic solvent is used to obtain lignin with light-color and low condensations from...

Electrochemical oxidative lignin cleavage and coupled 2‐furaldehyde reduction provide a promising approach for producing high‐value added products. However, developing efficient bifunctional electrocatalysts with noble metal‐like activity still remains a challenge. Here, we report an efficient electrochemical strategy for the selective oxidative cl...

ABSTRACT: High-thermal-conductivity (λ) nanocomposites have been thought to resolve thermal management issues in electronic development. However, use of these is still challenging due to the easy aggregation of micro/nanofillers in a matrix. Here, a high-efficiency, low-cost, environmental strategy was developed wherein pyrene-functionalized alkali...

The development of bio-based thermosets with favorable mechanical properties, high glass transition temperature (Tg), and recyclability for thermal management applications remains a huge challenge. In this study, a trifunctional aldehydes monomer was prepared from vanillin followed by curing with two kinds of diamine for novel polyimine networks. T...

Solar‐driven interfacial evaporation is an important approach for solving the issue of freshwater scarcity. However, the practical application of solar steam generation is hindered by high fabrication cost and environmental concerns regarding the petroleum‐based materials. Herein, lignocellulose (cellulose‐lignin composite) hydrogel (LCG) and ligni...

The conversion of renewable bioethanol into high-energy-density higher alcohols has become essential for meeting the increasing global demand to achieve carbon neutrality. In this study, Zn- and nitrogen-codoped Ni-based lignin-derived carbon catalysts ([email protected]) were prepared by solvent volatile self-assembly and in situ reductive carboni...

A series of polymers with high intrinsic thermal conductivity, named side-chain liquid crystal polysiloxanes (SCLCPs), is prepared via introducing a mesogenic structure using the monomers 4,4′-bis(5-hexenyloxy)biphenyl (S-CL) and 4-cyano-4′-hex-5-en-1-oxy-biphenyl (M). The effects of the flexible main chain and mesogenic units on the thermal conduc...

Developing high-performance thermal management materials with continuous thermal conductive networks (TCN) and low interface thermal resistance (ITR) remains challenging for heat dissipation of modern electronics. Here, a multiscale BN modulation strategy for preparing dense TCN of polymer composites and decreasing simultaneously the ITR is demonst...

Molybdenum nickel alloy has been proved to be an efficient noble-metal-free catalyst for hydrogen evolution reaction (HER) in alkaline medium, but its electrocatalytic activity and stability need to be further improved to meet industrial requirements. In this study, carboxymethylated enzymatic hydrolysis lignin (EHL) was used as a biomacromolecule...

Cellulose is environmentally friendly bio-based polymer with a large number of hydroxyl groups in its structure, which can easily form hydrogen bond networks. It has the potential to become excellent persistent room-temperature phosphorescence (pRTP) material through rational design. In this work, we reported a simple and universal strategy to obta...

The development of materials with efficient heat dissipation capabilities and remarkable mechanical properties is essential for high-power integrated electronic devices and flexible smart devices. Herein, a flexible cellulose nanofibers (CNF)/nanodiamond (ND)/MXene (CNM) composite film with typical nacre-like structure is fabricated using a facile...

The fabrication of polymer composites with excellent thermal conductivity typically involves complex matrix or fillers modifications. This study proposed a simple technique based on precursor selection for obtaining highly thermally conductive cellulose nanofiber (CNF)/supramolecule-synthesized carbon nitride (SCN) composites. Fourier-transform inf...

Flexible elastomer material with high stretchability and self-healing performance is the preferred substrates for preparing multi-function flexible sensors and bionic electronic skin. However, it is still a great challenge to...

To efficiently disperse micro/nano thermally conductivity (TC) fillers without pretreatment is still considered as a major technical issue to prepare high TC polymeric composites. Here, a new bio-based epoxy thermoset (BE) that contains the Schiff base structure was synthesized. BE/GNP (graphite nanoplatelets) powder with microcapsule structure was...

Unsatisfactory thermal conductive network (TCN) and poor heat conduction interface have limited thermal conductivity (TC) enhancement in the polymeric composites. In this study, inspired by mussels and a Chinese delicacy called the Hanamaki, a facile and environmental strategy is developed to prepare hierarchically ordered graphite film [email prot...

Here, high thermally conductive polydimethylsiloxane(PDMS) composites containing undamaged covalent-functionalized graphene(f-G) nanoflakes via novel hydroxylation graphene method and 3-methacryloxypropyltrimethoxysilane(KH-570) grafting was prepared. KH-570 was decorated on graphene to ensure good dispersion and interface compatibility in PDMS mat...

Polymers present typically low thermal conductivity (TC) and potential fire hazards and thus restricted its application in electronics. Here, graphene oxide (GO) was employed to replace the traditional synthetic polymers. Then, the vacuum-assisted self-assembly technique was developed to prepare multifunctional flexible hybrid film based on synergi...

The use of inorganic nanomaterials as “building blocks” and organic components as “mortars” to build nanocomposites are particularly well-suited to optimize the performance of composites. Here, based on nacre-inspired thought, a novel strategy of fabricating a steady and function tunable three-dimensional MXene thermal conductive cross-linking netw...

A flexible cellulose nanofibers/[email protected] film with nacre-like structure is constructed by a facile vacuum-assisted filtration process. The composite film shows an outstanding thermal conductivity of 22.43 W m⁻¹ K⁻¹ at 30 wt% [email protected] loading, which enhances 769% relative to the pure CNFs film. This is mainly due to the bridging ef...

Multifunctional thermal management paper has attracted high attention in various aspects. Herein, a ultrarobust multifunctional laminated nacre-like paper was fabricated through vacuum-assisted alternate self-assembly. SEM and XRD results proved that cellulose nanofibers (CNF) are drawn into MXene nanosheets driven by vacuum. The unique laminated n...

Low thermal conductivity (TC) and poor flame retardancy of graphene oxide (GO) have limited its application in thermal management. Herein, a facile strategy is developed to fabricate flexible and free-standing graphene/MXene (GM) films by filtration of MXene and GO dispersions, followed by reduction and thermal welding. As results, interlamellar in...

Designing ordered fillers arrangement and superior interfacial adhesion between fillers and matrix can improve the thermal conductivity (TC) of composites. Here, bioinspired dopamine chemistry was firstly used to reduce graphene oxide (GO) and introduce polydopamine nanoparticles on the surface of GO. Then, a well-aligned epoxy/reduced GO films (EP...

In this work, phosphomolybdic acid (PMoA) was used as a kind of eco-friendly flame retardant precursor. Then, a green intrinsic flame retardant was successfully prepared by chemically modifying PMoA with imidazolium (IM), which can be well dispersed in epoxy matrix without using any solvent. DSC results demonstrated that IM-PMoA can chemically reac...

Thermally degradable thermoset acrylate-epoxy resins with thermal cleavable groups had been prepared by a series of acrylate-epoxy pre-polymers which was cured with 4-methyl hexahydrophthalic anhydride (MHHPA). The acrylate-epoxy pre-polymers were synthesized via the radical polymerization of 3, 4-epoxycyclohexylmethyl methacrylate (EMA) with butyl...

A novel UV‐curable supramolecular waterborne polyurethane (PU) was prepared through the introduction of methylated‐β‐cyclodextrin (Me‐β‐CD). The host‐guest interactions between Me‐β‐CD and photosensitive monomer (PM) were further investigated by ¹HNMR and fluorescence spectroscopy, where the corresponding equilibrium constant was also calculated. C...

Constructing layer-by-layer framework is a highly efficient strategy for preparing the excellent performance thermal management materials. In this report, thermal oxidation and ultrasonic exfoliation of hexagonal boron nitride can prepare hydroxylated boron nitride nanosheet (BNNS-OH). BNNS-OH layer and CNF layer are assembled respectively on the C...

Inspired by the hierarchical microstructure of nacre, via the surface modification of polydopamine (PDA), nacre-mimicking composite films containing graphene oxide (GO) and different mass ratio (5, 15, 25, 35 wt%) of copper nanowires (CuNWs) were prepared with a solvent-induced assembly strategy. The introduction of PDA not only reduced GO, but als...

Polymer nanocomposites with high thermal conductivity (K) have promising prospects in thermal management. However, how to achieve good dispersion and strong interfacial adhesion between nanofillers and polymers, and to obtain optimal K at low filler concentrations remains a challenging subject. Here, bioinspired dopamine chemistry was used to form...

In this contribution, a green nanocomposite consisting of casein phosphopeptide-biofunctionalized graphene oxide nanoplatelets (CPGO) and cellulose nanofibers (CNFs) was fabricated via vacuum-assisted self-assembly technique. A ‘natural nacre’ and strong hydrogen bonds network structure was constructed by CNFs and CPGO. In this architecture, the sc...

A free-standing hybrid film combining graphene and zinc oxide nanoflakes used as electrode materials was prepared by facile filtration self-assembly and thermal reduction process. The as-prepared ZnO nanoflakes were inserted into the graphene sheets to form unique layer-layer structure. The hybrid film can be directly employed as binder-free and se...

In the last several years, multiple‐shape memory liquid crystalline networks (LCNs) have received more and more attention due to the basic theoretical research on them and their wide potential applications. In this article, a novel main‐chain/side‐chain liquid crystalline monomer and its corresponding polymer networks based on the thiol‐ene click r...

In this work, a cycloaliphatic epoxy resin hexahydrophthalic acid bis (3, 4-epoxycyclohexylmethyl) ester (BE) was prepared and cured with anhydride. The curing kinetics and properties of the cycloaliphatic epoxy resin were characterized and compared with the (3’, 4’-epoxycyclohexane) methyl-3, 4-epoxycyclohexyl-carboxylate (CE) and bis (3, 4-epoxyc...