Minwoo Rim

Chonbuk National University | cbnu · Department of Polymer Nano Science & Technology

Viologen‐based reactive mesogen (VRM) is newly designed and synthesized for the development of polarization‐dependent, color‐tunable, and transparent electrochromic (EC) smart windows. By controlling electric field, the color of VRM can be intentionally tuned due to the formation of dication (D state), cation‐radical (C state), and neutral state (N...

To develop advanced optical systems, many scientists have endeavored to create smart optical materials which can tune their photophysical properties by changing molecular states. However, optical multi‐states are obtained usually by mixing many dyes or stacking multi‐layered structures. Here, multiple molecular states are tried to be generated with...

For the development of acid‐responsive advanced fluorescent films with a 2D nanostructure, a pyridyl cyanostilbene‐based AIEgen (PCRM) is newly synthesized. The synthesized PCRM exhibits aggregation‐induced emission (AIE) and responds reversibly to acid and base stimuli. To fabricate the nanoporous polymer‐stabilized film, PCRM and 4‐(octyloxy)benz...

Disc-shaped building blocks with columnar phases have attracted attention for their potential in optical applications, including a retarder. However, to achieve coatable high-performance optical films, it is essential to understand a subtle interaction balance between building blocks and relevant self-assembled behaviors during material processing....

Tetrathiafulvalene (TTF)-based reactive mesogens (TTF-E and TTF-T) are synthesized, self-assembled, uniaxially oriented, and polymerized for the development of encryptable electrochromic smart windows. Electrochemical and spectroscopic experiments prove that the self-assembled TTF mixture (TTFM, TTF-E:TTF-T = 1:1) can reversibly switch the absorpti...

Many studies on the basis of cholesteric liquid crystal (CLC) have focused on dynamic optical changes utilizing photochemical reactions raising helical pitch variations. However, the conventional dyes doped in CLC system often show reversible isomerization such as trans‐cis, E‐Z, and open‐close forms that hampers the fixation of desired color cues....

For the development of optically encryptable smart glass that can control the molecular alignment of liquid crystals (LCs), an azobenzene-based reactive molecule (ARM) capable of trans-cis photoisomerization is newly designed and synthesized. Photo-triggered LC-commandable smart glasses are successfully constructed by the surface functionalization...

Metallomesogens In article number 2106559, Kwang‐Un Jeong and co‐workers present a luminescence switching material using cyclometalated Pt(II)‐based metallomesogen. The metallomesogen changes solid‐state emission in response to thermal stimulation and the uniaxially aligned metallomesogen presents linearly polarized photoluminescence. Metallomesoge...

An advanced heat managing graft polymer (AHG) was fabricated by introducing a mesogen-based molecular building block that facilitates photon transfer. The fabricated AHGs exhibit excellent thermal conductivity as well as...

In response to human damage caused by harmful vapors emitted throughout the industry, the detection of toxic vapors such as acid vapors is urgently required. Recognizing acid vapor leaks is...

An anisotropic light emitting metallomesogen (PtM) consisting of a cyclometalated platinum(II)–terpyridine (Pt(II)–tpy) chromophore and a flexible dendron is newly synthesized as a thermal‐induced and polarization‐induced solid‐state luminescence switching material. The self‐assembled PtM is uniaxially aligned by mechanical shearing within the meso...

Utilizing a newly programmed and synthesized heat storage mesogen (HSM) and reactive mesogen (RM), advanced heat managing polymer alloys that exhibit high thermal conductivity, high latent heat, and phase transition at high temperatures were developed for use as smart thermal energy harvesting and reutilization materials. The RM in the heat-managin...

With the significance of heat management, recently, high thermal conducting polymers have attracted attention as promising polymeric matrix materials in miniaturized and flexible devices. Porphyrin-based reactive metallomesogens (PorV-x; x = -2H, -Ni, -Cu, and -Zn) were newly designed and synthesized for the fabrication of thermal conducting polyme...

Bandwidth-tunable anisotropic spatial light modulators are fabricated with redox-responsive dichroic mesogens. By in-troducing an ionic group and a polymerizable group into the chromophore, the programmed reactive mesogen (PDI-MA) exhibits a lyotropic chromonic liquid crystal (LCLC) phase. PDI-MA molecule forms a stable aromatic dianion state so th...