http://scholar.dgist.ac.kr:80 The Repository digital repository system captures, stores, indexes, preserves, and distributes digital research material. 2026-09-16T00:39:12Z https://scholar.dgist.ac.kr/handle/20.500.11750/60846 Title: Cold-injection synthesis of highly emissive perovskite nanocrystals Author(s): Kim, Sungjin; Kim, Sun-Ah; Park, Gyeong-Su; Kim, Eonsu; Kim, Dong-Hyeok; Lee, Seung-Chul; Woo, Seung-Je; Jang, Youngwoo; Kweon, Jin Jung; Kang, Sungsu; Lee, Minyoung; Yun, Hyung Joong; Park, Sunghee; Shim, Hyun-Joon; Kim, Joo Sung; Jang, Kyung Yeon; Sung, Min-Jun; Park, Chan-Yul; Chang, Seong Eui; Park, Jinwoo; Park, Jungwon; Lee, Sung Keun; Lee, Tae-Woo Abstract: Colloidal perovskite nanocrystal (PeNC) has long been synthesized using the hot-injection method and room-temperature ligand-assisted reprecipitation as the prominent techniques(1,2). However, both methods have challenges for industrial-scale production(3, 4-5): the hot-injection method requires high temperatures, an inert gas environment and rapid cooling, which raise safety concerns, whereas ligand-assisted reprecipitation can exhibit limited productivity on scale-up. Here we present a cold-injection method based on pseudo-emulsion, enabling scalable synthesis of PeNCs with near-unity photoluminescence quantum yield (PLQY, similar to 100%) and enhanced stability by injecting precursor solution below 4 degrees C. In the cold-injection method, PeNCs grow through the assembly of fully coordinated plumbates out of the pseudo-emulsion with the assistance of a demulsifier. We discovered that slow assembly of polybromide plumbates, assisted by cold temperature, is essential for defect suppression, resulting in reproducible, stable and pure-green-emitting PeNCs with near-unity PLQY. Furthermore, this method enables efficient large-scale production, achieving 20-l-scale synthesis with remarkable batch weight while maintaining near-unity PLQY. Our findings represent a substantial advancement in synthesis of high-quality PeNCs, offering potential for broad applications in display and lighting industries. 2026-02-28T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60845 Title: Glial pathology networks reveal early olfactory vulnerability in post mortem human Alzheimer's disease Author(s): Jung, Da Hae; Park, Eunji; Ju, Hyeon Chang; Moon, Cheil; Jahanshahi, Ali Abstract: INTRODUCTION: The olfactory system is an early target in Alzheimer's disease (AD), yet regional glial pathology interactions remain poorly defined. We examined how glial activation and pathological burden differ between the olfactory cortex (OC) and olfactory bulb (OB) across disease stages. METHODS: Post mortem OC and OB samples from cognitively normal (CN), mild cognitive impairment, and AD cases were analyzed using immunohistochemistry and immunofluorescence for amyloid beta (A beta), phosphorylated tau (pTau), Iba1 (microglia), GFAP (astrocyte), and apolipoprotein E (apoE). RESULTS: Both regions showed stage-dependent increases in A beta and pTau, with regionally distinct glial responses. ApoE signal varied with clinical stage rather than genotype. Co-expression analyses revealed astrocyte-linked networks in the OC and microglia-linked relationships in the OB. DISCUSSION: Findings demonstrate spatially heterogenous glial pathology architectures in the human olfactory system, supporting its role as an early and regionally diverse site of AD vulnerability. 2026-03-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60832 Title: Localized Supersaturation Directs Crystallization within Nanoconfined Reactors Author(s): Seunghyeon Jeong Description: localized supersaturation, crystallization, nucleation, Cu2O, HKUST-1 2025-12-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60831 Title: Proton Conduction Regime Switching in Polymer– MOF Hybrids Author(s): Ye Eun Lee Description: Metal−Organic Frameworks, Proton Conductivity, Grotthuss Mechanism, Vehicle Mechanism, Pathway Reorganization 2025-12-31T15:00:00Z