Abstract Switchable passive radiative cooling (PRC) smart windows can modulate sunlight transmission and spontaneously emit heat to outer space through atmospheric transparent window, presenting great potential in building energy conservation. However, realizing stable on‐demand control of the efficiency for PRC materials is still challenging. Herein, an electro‐controlled polymer‐dispersed liquid crystal (PDLC) window showing property designed prepared by adding mid‐infrared emitting...

Abstract Smart windows with radiative heat management capability using the sun and outer space as zero‐energy thermodynamic resources have gained prominence, demonstrating a minimum carbon footprint. However, realizing on‐demand thermal throughout all seasons while reducing fossil energy consumption remains formidable challenge. Herein, an energy‐efficient smart window that enables actively tunable passive cooling (PRC) multimode heating regulation is demonstrated by integrating...

Distinguished from traditional physical unclonable functions (PUFs), optical PUFs derive their encoded information the properties of materials, offering distinct advantages, including solution processability, material versatility, and tunable luminescence performance. However, existing research on has predominantly centered visible photoluminescence, while advanced based higher-level covert light remain unexplored. In this study, we present utilization near-infrared circularly polarized...

Circularly polarized luminescent materials play an increasingly important role in display equipment and optical apparatuses. Herein, we design synthesize a kind of liquid crystalline polymer with both chirality aggregation-induced emission groups, namely, poly(4-cholesterol formate-oxygen-tetraphenylethylene-methacrylate) (PT-Chol). Polarized light microscopy X-ray scattering results show that the forms layered structure. Because existence tetraphenylethylene luminogen, shows highly...

Liquid crystalline elastomers (LCEs) using multivalent hydrogen bonds as cross-linkers were successfully fabricated, which showed both self-healing and photoinduced-deformable properties. More interestingly, this LCE could be readily molded into different shapes through a versatile efficient procedure, the fibrous filmy samples behavior originating from difference in molecular orientations.

Organic persistent luminescent materials have attracted special attention due to their significant applications in optoelectronics, sensors, and security technology areas. In this work, a series of organic compounds (1–4) with twisted electron donor–acceptor structures are successfully designed synthesized, then the resultant dissolved methyl methacrylate (MMA), afterward, situ polymerization realizes single-molecular room-temperature phosphorescent (RTP) (P1–P4). All RTP show long lifetime,...

Abstract Polymeric room temperature phosphorescence (RTP) materials have attracted tremendous attentions owing to their excellent flexibility, easy processing, low cost, and good thermal stability. In this work, an improved strategy is proposed for ultralong RTP polymeric through copolymerizing the phosphor monomer with D (donor)−A (acceptor) structure another ultrastrong multiple hydrogen bonds. A series of copolymers (P1–P4) containing different ratios carbazole‐dibenzofuran (CDF)...

Circularly polarized organic room temperature phosphorescence (CPRTP) with g max = +0.098 was activated by the rigid environment of an in situ cross-linked liquid crystalline polymer network.

The liquid-crystalline (LC) phase structures and transitions of a combined main-chain/side-chain LC polymer (MCSCLCP) 1 obtained from radical polymerization 2-vinylterephthalate, poly(2,5-bis{[6-(4-butoxy-4′-oxybiphenyl) hexyl]oxycarbonyl}styrene), were studied using differential scanning calorimetry, one- two-dimensional wide-angle X-ray diffraction (1D 2D WAXD), polarized light microscopy. We have found that with sufficiently high molecular weight can self-assemble into hierarchical...

A series of high efficiency luminescent liquid crystalline polymers (LLCPs) based on aggregation-induced emission (AIE) and the "Jacketing" effect, namely, poly{2,5-bis{[2-(4-oxytetraphenylethylene)-n-alkyl]oxycarbonyl}styrene} (denoted as Pm, m = 2, 4, 6, 8, 10, 12), were successfully designed synthesized via introducing tetraphenylethylene to side group with different length spacers. Because AIE resultant LLCPs are completely free aggregation caused quenching. The photophysical properties...

Circularly polarized luminescent materials show significant application in display devices, optical instruments, bionic fields, etc. In this work, we design and prepare a chiral liquid crystalline polymer, namely, poly(4,4',4″-tricholesterylformate-oxytetraphenylethylene-methyl acrylic acid ester) (P1). Polarizing microscopy (POM) X-ray diffraction (XRD) results indicate that polymer forms hexagonal columnar phase. luminescence (CPL) experiment shows no CPL signal is observed for the bulk,...

Abstract Polyimide (PI), an important engineering polymer with a rigid chemical structure, readily has excellent stability, heat resistance, and electrical insulation but lacks broadband photothermal properties. Herein, we design synthesize PI copolymers that embrace intrinsic properties by using two diamine monomers of (Z)‐2,3‐bis(4‐aminophenyl) acrylonitrile (CNDA) 4,4‐diphenyldiamine (NDA) strong ultraviolet (UV), near‐infrared (NIR) absorption capabilities, respectively. Tuning the molar...

The gold nanoparticles highly grafted by a liquid crystalline polymer (LCP) with azobenzene mesogens as the side chain (denoted Au@TE-PAzo NPs) are successfully designed and synthesized two-phase Brust-Schiffrin method. chemical structures of monomer ligands have been confirmed nuclear magnetic resonance, molecular weight is determined gel permeation chromatography. combined analysis transmission electron microscopy thermogravimetric shows that size 2.5(±0.4) nm content in NPs ca. 17.58%....

An azobenzene side chain liquid crystalline copolymer (MAzo-co-GMA) is successfully synthesized through copolymerizing the monomer 6-(4-((4-butylphenyl)diazenyl)phenoxy)hexyl methacrylate (MAzo) with glycidyl (GMA). The obtained MAzo-co-GMA can form stabilized polymer brush on surface after thermal annealing. not only induces alignment of crystals but also shows a photothermal effect under UV light irradiation due to group. On basis these results, LC cell this as substrate further used...

Luminescent liquid crystalline polymers (LLCPs) show extensive application potentials, such as crystal displays and circularly polarized luminescence. In this work, we employ a hydrogen-bonding strategy different from the traditional covalent-bonding method to fabricate LLCPs. First, acceptor donor of hydrogen bonding, (4,4'-dibutanoxy tetraphenylethylene)-1-pyridine (PTPEC4) poly(2-vinyl terephthalic acid) (PPA), respectively, are successfully synthesized. Then, mixtures with molar ratios (...

Efficient circularly polarized luminescence (CPL) optical waveguides have significant potential for advancing photonic and optoelectronic devices. However, the development of CPL materials (OWMs) with low loss coefficient remains a considerable challenge. To overcome this, we design synthesize OWMs based on room‐temperature phosphorescent liquid crystalline polymers (LCPs). Experimental results demonstrate that these LCPs exhibit nematic crystal phase phosphorescence lifetime approximately...

Efficient circularly polarized luminescence (CPL) optical waveguides have significant potential for advancing photonic and optoelectronic devices. However, the development of CPL materials (OWMs) with low loss coefficient remains a considerable challenge. To overcome this, we design synthesize OWMs based on room-temperature phosphorescent liquid crystalline polymers (LCPs). Experimental results demonstrate that these LCPs exhibit nematic crystal phase phosphorescence lifetime approximately...

Information security has emerged as a critical concern in contemporary society. Leveraging optical logic gates with dual-emission characteristics offers promising approach to enhancing information security. However, designing active waveguide materials (OWMs) capable of fluorescence-phosphorescence dual emission remains significant challenge. In this study, we present room-temperature phosphorescent liquid crystalline polymer (RTP LCP) OWMs exhibiting and low loss coefficient (OLC) for...

Abstract Circularly polarized luminescence (CPL) materials have garnered considerable attention for applications in optical data storage, anti‐counterfeiting, and photonic devices. However, precisely controlling over chirality emissive properties of chiral luminescent polymers remains challenging. Herein, this work presents a series polyether‐based liquid crystalline copolymers (LCPs), denoted Cy x Ch y , synthesized via organocatalyzed ring‐opening copolymerization epoxides bearing...

Abstract Currently, optical waveguides show extensive application in photonics and optoelectronic devices due to their high information capacity transmission capabilities. However, developing self‐adaptive, smart waveguide materials with ultra‐low loss remains a significant challenge. To address this issue, luminescent liquid crystalline elastomers (LLCEs) remarkable flexibility minimal through one‐pot synthetic method is synthesized, marking the first example of such an approach. The...

Combining the concept of "flexible spacer" which can bring liquid crystalline (LC) properties to side-chains and side-group "jacketing" effect result in main-chain with rod-like conformation, we have synthesized a new combined main-chain/side-chain LC polymer based on radical polymerization, poly(2,5-bis{[6-(4-methoxy-4′-oxy-azobenzene)hexyl]oxycarbonyl}styrene) (denoted as P1) two azobenzene groups per repeating unit. The chemical structures P1 corresponding monomer were characterized using...