Article
Chemistry, Multidisciplinary
Soohyung Lee, Chad E. Hoyer, Can Liao, Xiaosong Li, Vincent C. Holmberg
Summary: This study reports the phase-controlled synthesis of colloidal silver iron sulfide (AgFeS2) nanocrystals and investigates their resonant light-matter interactions. The composition of the product can be selectively shifted by adjusting the coordinating ligand concentration, impacting the crystal structure and optical properties. The strong UV-visible extinction peak exhibited by AgFeS2 nanocrystals is attributed to a quasi-static dielectric resonance, expanding the library of underexplored intermediate-band semiconductor nanocrystals with unique optical properties.
Article
Biochemistry & Molecular Biology
Zhiguo Zhang, Guihua Yang, Ming He, Letian Qi, Xincai Li, Jiachuan Chen
Summary: The synthesis of silver nanoparticles assisted by nanocellulose was studied for glucose detection. It was found that under specific conditions, nanocellulose exhibited good linear relationship with silver nanoparticles, which can be further developed as a sensor with high sensitivity and stability for glucose detection and as an antibacterial material.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Multidisciplinary Sciences
Joonghoon Choi, Dae Kwon Jin, Junseok Jeong, Bong Kyun Kang, Woo Seok Yang, Asad Ali, Jinkyoung Yoo, Moon J. Kim, Gyu-Chul Yi, Young Joon Hong
Summary: This study presents morphology-controlled remote epitaxy of ZnO micro- and nanostructure crystals on graphene-coated GaN substrate via hydrothermal growth. By changing additives in the wet chemical solution, diverse morphologies of ZnO can be grown from nanowire to microdisk. The direction of ZnO's hexagonal sidewall facet is found to be homogeneous over the entire growth area on the graphene-coated GaN substrate.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Kari Rissanen, Jas S. Ward
Summary: This study synthesized new iodine(I) complexes using silver(I) complexes and explored the influence of different functional substituents. The properties of these rare iodine(I) complexes containing 3-substituted pyridines were compared to their more prevalent 4-substituted counterparts.
Article
Chemistry, Multidisciplinary
Mengmeng Zhang, Yue Xu, Xudong Peng, Hongyu Chen, Hong Wang
Summary: We report a site-selective growth route to produce gold nanoparticle dimers with a high yield of up to 71%. The method involves the polymer contraction that exposes the tips of gold nanorods, which serve as active sites for further growth. By fine-tuning the reaction rate, we are able to control the spacing between nanoparticles, resulting in good surface-enhanced Raman scattering (SERS) performance. Our method overcomes the limitations of existing synthetic methods and achieves the synthesis of large dimers in a solution.
CHEMICAL COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Tahir Muhmood, Zihe Cai, Shengxuan Lin, Jiajia Xiao, Xiaobin Hu
Summary: This study presents a single-step polyol-solvothermal synthesis strategy for the synthesis of zero, one, two, and three-dimension silver structures by simply switching the reaction pressure with the help of silver amount and halide ions. This strategy eliminates the need for oxygen scavengers, inert gases, or adjustments to injection and stirring speeds.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Organic
Yuhan Wang, Huitao Zheng, Jiajia Xu, Canzhan Zhuang, Xiang Liu, Hua Cao
Summary: This study presents an efficient approach for the divergent synthesis of primary, secondary, and tertiary amines through the controllable cleavage of triazines and site-selective functionalization. The synthesis proceeded with imidazo[1,2-a]pyridines and readily available triazines using Lewis acid catalysis and Hofmann-Martius type rearrangement, resulting in the facile access to a wide range of functionalized primary and secondary aromatic amines, and trialkylamines. The results also demonstrated the potential of incorporating the obtained aromatic amines into valuable nitrogen-containing molecules through the use of important bioactive units.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Engineering, Environmental
Chongchong Wang, Yuanyuan Xia, Gang Wu, Lin Zhou, Shaohua Wei
Summary: This study presents a reliable, general, and facile method for the synthesis of various 2D TMOs through a cascade reaction strategy involving the cleavage of oxide bonds in the presence of H2O2. The fabricated 2D CuO2, CuO, and Mn3O4 show potential applications in cancer treatment, with enhanced biodegradability, reactivity, and drug loading efficiency compared to CuO2 nanoparticles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Muhammad Waqas Iqbal, Mian Muhammad Faisal, Haseeb ul Hassan, Amir Muhammad Afzal, Sikandar Aftab, Tausaif Zahid, Abaid Ur Rehman
Summary: This study synthesized silver sulfide, cobalt sulfide, and their binary compound silver cobalt sulfide using a simple hydrothermal approach. The electrochemical analysis showed that the specific capacity of silver cobalt sulfide was higher when compared to silver sulfide or cobalt sulfide alone. An asymmetric supercapacitor with activated carbon as the negative electrode and silver cobalt sulfide as the positive electrode achieved high energy density and power density.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Na Gao, Rubo Zhang, Bingkun Chen, Jinfeng Zhang, Xiaoling Zhang, Andrey L. Rogach
Summary: The synthesis of AgInS2 and AgInZn2S4 nanocrystals was successfully achieved through cation exchange in both organic and aqueous phases, resulting in orthorhombic and hexagonal structures, respectively.
Article
Chemistry, Multidisciplinary
Jian Luo, Ai-Qing Zhong, Jia-Hao Qiu, Xiong-Wei Liu, You-Ping Tian, Bao-Hua Zhang, Guo-Shu Chen, Wei Shu, Yun-Lin Liu
Summary: A green and environmentally friendly synthetic approach has been developed for the preparation of racemic or enantioenriched 3,4,6-trisubstituted α-pyrones through a cheap K2CO3-catalyzed C(CO)-C bond insertion reaction of ketenimines with 1,3-diketones. The synthetic utility of this methodology was demonstrated by the broad substrate scope and the concise synthesis of analogues of pharmaceutically active compounds. Furthermore, the study also revealed the potential of extended conjugated α-pyrones for optoelectronic applications in organic light-emitting diodes.
Article
Chemistry, Physical
Zhuquan Fu, Yisicheng Wang, Ziyi Li, Ting Song, Bei Long, Atif Ali, Guo-Jun Deng
Summary: A porous silver cyanamide nanocrystals photocatalyst was prepared for converting CO2 to CH4, showing increased catalytic activity and selectivity by providing more internal reaction microenvironment and expanding active sites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Organic
Mengyuan Hou, Yahao Wang, Puhui Li, Xingxing Ma, Guan Zhang, Qiuling Song
Summary: alpha-boryl carbonyl species and alpha-boryl aminocompounds are important in organic synthesis. However, merging them into 1,1-carbonyl amino alkyl boron compounds is challenging. This study presents an efficient method using indoles to produce 1,1-carbonyl amino alkyl borons through oxidation by m-CPBA or oxone. The reaction is simple, versatile, and produces valuable products.
Article
Chemistry, Organic
Yujin Jang, Weixia Deng, Ivan S. S. Sprague, Vincent N. G. Lindsay
Summary: An expedient approach for the synthesis of challenging β-fluoroamides from readily accessible cyclopropanone equivalents is reported. Following the addition of pyrazole used here as a transient leaving group, silver-catalyzed regiospecific ring-opening fluorination of the resulting hemiaminal leads to a β-fluorinated N-acylpyrazole intermediate reactive to substitution with amines, ultimately affording β-fluoroamides. The process could also be extended to the synthesis of β-fluoroesters and γ-fluoroalcohols via the addition of alcohols or hydrides as terminal nucleophiles, respectively.
Article
Chemistry, Applied
Yanke Hao, Pan Zhou, Kaikai Niu, Hongjian Song, Yuxiu Liu, Jingjing Zhang, Qingmin Wang
Summary: The study presents a method for synthesizing indole- and pyrrole-fused seven-membered nitrogen heterocycles through acid-base switchable cyclization reactions, which can construct two different kinds of seven-membered rings in one step from the same starting material without the need for a transition-metal catalyst.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Xingchao Zhao, Ming Liu, Kaixuan Yang, Zijin Zhao, Jian Wang, Zhengji Zhou, Xiaoling Ma, Fujun Zhang
Summary: Photomultiplication type organic photodetectors (PM-OPDs) with a sandwich structure of ITO/PNDIT-F3N/ P3HT:[71]PCBM(100:1, wt/wt)/Al were successfully developed, showing different response characteristics under forward or reverse bias. The less [71]PCBM acts as isolated electron traps to capture photo generated electrons. The trapped electrons near ITO (Al) electrode can induce interfacial band bending for hole tunneling injection from the external circuit under forward (reverse) bias. The injected holes can be efficiently transported along the channel provided by P3HT and collected by the corresponding electrode under bias. The EQE spectra of PM-OPDs are primarily determined by the trapped electron distribution near ITO or Al electrode under forward or reverse bias. The PM-OPDs exhibit flat EQE spectra under forward bias and 'M-shaped' EQE spectra under reverse bias, which corresponds to the curves of trapped electron distribution near ITO or Al electrode. The champion EQE values of PM-OPDs reach 2550% at 425 nm under 10 V bias and 2360% at 365 nm under -10 V bias. The PM-OPDs show distinct response speed under forward or reverse bias, which is primarily attributed to the different trapped electron density near ITO or Al electrode under incident light from ITO side.
ORGANIC ELECTRONICS
(2022)
Article
Nanoscience & Nanotechnology
Xiaoling Ma, Wenjing Xu, Zhongyuan Liu, Sang Young Jeong, Chunyu Xu, Jian Zhang, Han Young Woo, Zhengji Zhou, Fujun Zhang
Summary: In this work, layer-by-layer (LbL) polymer solar cells (PSCs) with the incorporation of a dissociation strengthening layer (DSL) were constructed using wide-bandgap donor D18-Cl and narrow-bandgap nonfullerene acceptor Y6. The efficiency of LbL PSCs was enhanced by introducing the DSL, resulting in a PCE improvement from 17.62% to 18.15%. The DSL incorporation strategy also showed improved performance in D18-Cl/L8-BO- or D18-Cl/N3-based LbL PSCs, indicating its universality in enhancing PCE.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Zijin Zhao, Chunyu Xu, Yao Ma, Xiaoling Ma, Xixiang Zhu, Lianbin Niu, Liang Shen, Zhengji Zhou, Fujun Zhang
Summary: Filter-free narrowband photomultiplication-type planar heterojunction (PHJ) organic photodetectors (PM-PHOPDs) are realized by employing a thick front donor layer and an ultrathin PC71BM layer. The P3HT/PC71BM-based PM-PHOPDs exhibit narrowband response with high external quantum efficiency (EQE). The response peak of PM-PHOPDs can be adjusted by incorporating different OFA layers.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Mu Yang, Qilin Dai, Aiwei Tang, Feng Teng, Hong-shang Peng
Summary: To improve the luminescence efficiency and stability of chloride-bromine mixed perovskite quantum dots (PQDs), a novel type of CH3NH3Pb(Cl/Br)3 PQDs (Cl/Br-PQDs) were synthesized using anion exchange and in-situ growth of silica shell. The Cl/Br-PQDs showed a strong emission at 464nm, a high photoluminescence quantum yield of 94.6%, and ultrahigh stability, which were attributed to efficient defects passivation by doped Cl- ions and silica-shell-locked OAm+ ligands, as well as the restricted migration of halogen ions.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Physical
Mengyun Jiang, Hong-Fu Zhi, Bao Zhang, Chucheng Yang, Asif Mahmood, Miao Zhang, Han Young Woo, Fujun Zhang, Jin-Liang Wang, Qiaoshi An
Summary: In this study, a new acceptor L8-BO was combined with the B1:BO-4Cl system to construct efficient ternary all-small-molecule organic solar cells (ASM-OSCs). Theoretical, morphological, and crystallographic studies showed that L8-BO and BO-4Cl had good compatibility, leading to the formation of an alloy-like state in the ternary blend. The synergy between the two acceptors promoted favorable phase separation and molecular stacking, enhancing charge splitting and extraction and resulting in improved short-circuit current density and fill factor. Furthermore, the alloy-like state of the acceptors and the higher energy level of L8-BO helped reduce voltage loss in the ternary ASM-OSCs compared to binary devices. The optimal ternary ASM-OSCs with 20 wt% L8-BO achieved a top-level efficiency of 17.10%.
ACS ENERGY LETTERS
(2023)
Article
Energy & Fuels
Shuping Zhang, Xiaoling Ma, Lianbin Niu, Sang Young Jeong, Han Young Woo, Zhengji Zhou, Fujun Zhang
Summary: By finely modulating the energy levels and absorption spectra, organic semiconducting materials with fluorine or chlorine substitution are designed for efficient polymer solar cells (PSCs). In this study, two small molecular acceptors with fluorine or chlorine substitution are selected to prepare ternary PSCs with a polymer donor. The optimal ternary PSCs exhibit a high power conversion efficiency of 18.66% by increasing the open-circuit voltage, short-circuit current density, and fill factor. The addition of chlorine substitution enhances the crystallization and intermolecular interaction, leading to improved charge transport and device performance.
Article
Chemistry, Multidisciplinary
Yuxin Bao, Xi Wu, Bingyang Bo, Jinglei Qin, Yafei Zhang, Xiaojia Wu, Xiang Li, Yiquan Wang, Hongshang Peng
Summary: In this study, a reprecipitation-encapsulation method was used to co-load near infrared II (NIR-II) fluorescent Ag2S quantum dots (QDs) and photosensitizer zinc phthalocyanine (ZnPc) into single nanoparticles (NPs). The resulting Ag2S/ZnPc NPs, coated by a poly-L-lysine (PLL) layer, showed good biocompatibility and exhibited strong NIR-II fluorescence. They demonstrated efficient phototherapeutic efficacy on HeLa cells and achieved a deep tissue penetration depth of 1.4 mm. These findings indicate that the facilely prepared Ag2S/ZnPc NPs hold great promise for NIR-II fluorescence imaging-guided in vivo PDT.
Review
Energy & Fuels
Lu Zhang, Zhigang Yao, Hanyu Wang, Jian Zhang, Xiaoling Ma, Fujun Zhang
Summary: Polymer solar cells (APSCs) composed of polymeric donors and acceptors have shown great potential for wearable and flexible stretchable devices due to their mechanical flexibility and good film formation property. The recent progress in efficient APSCs is mainly attributed to the development of functional layer materials and device engineering evolution. This review outlines the key materials and techniques that enable high-performance APSCs, and discusses the challenges and future outlooks in this field.
Article
Physics, Applied
Haolan Zhang, Ming Liu, Xingchao Zhao, Xiaoling Ma, Guangcai Yuan, Junming Li, Fujun Zhang
Summary: Photomultiplication type quasi-planar all-polymer photodetectors (PM-QAPDs) were fabricated using a sequential spin-coating method, and the response range was adjusted by altering the thickness of the donor layer.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Jinglei Qin, Bingyang Bo, Tingyu Yang, Zhi Wang, Fang Xie, Hongshang Peng
Summary: In this study, multifunctional nanoparticles were developed for synergistic photodynamic therapy and chemodynamic therapy. The nanoparticles loaded with photosensitizer ZnPc and coated with Fe2+ ions-chelated polydopamine shell could generate 1O2 and & BULL;OH upon photo-irradiation and exposure to H2O2, respectively. In vitro cell experiments showed that the nanoparticles achieved a higher therapeutic effect compared to single-modality photodynamic therapy.
Article
Materials Science, Multidisciplinary
Xianyao Wu, Kai Yin, Mu Yang, Yufeng Hu, Hongshang Peng
Summary: In this study, silica-coated CsPbBr3 perovskite quantum dots (PQDs) were prepared using ethyl acetate as an environmentally friendly anti-solvent. The as-prepared PQDs showed tunable emission wavelength and a medium photoluminescence quantum yield (PLQY) of 60%. Furthermore, post-treatment with different ligands successfully mitigated surface defects and improved the PLQY (up to 73%) and stability of the PQDs.
FLEXIBLE AND PRINTED ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Chunyu Xu, Zijin Zhao, Lixuan Kan, Sheng Tao, Xiaoling Ma, Xixiang Zhu, Kai Wang, Jian Zhang, Junming Li, Fujun Zhang
Summary: By optimizing photon harvesting and photogenerated carrier collection, opaque organic photovoltaics with high fill-factor and power conversion efficiency are achieved. Additionally, colorful semitransparent organic photovoltaics are realized by tuning the thickness of Ag and LiF layers.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Energy & Fuels
Zhongyuan Liu, Miao Zhang, Wenjing Xu, Hongyue Tian, Sang Young Jeong, Han Young Woo, Xiaoling Ma, Fujun Zhang
Summary: A series of bulk heterojunction (BHJ) and layer-by-layer (LbL) all-polymer solar cells (APSCs) were prepared with PM6 as donor and PY-DT as acceptor in conventional and inverted configurations. The traditional LbL APSCs exhibited the highest power conversion efficiency (PCE) of 17.24%, attributed to efficient charge transport and exciton utilization with energy transfer from PM6 to PY-DT and self-absorption effect of PM6 playing crucial roles.
Article
Materials Science, Multidisciplinary
Zijin Zhao, Baiqiao Liu, Chunyu Xu, Longtao Li, Ming Liu, Kaixuan Yang, Sang Young Jeong, Han Young Woo, Guangcai Yuan, Weiwei Li, Fujun Zhang
Summary: In this study, three different polymers with different amounts of PC61BM pendants were synthesized and successfully applied to high-stability PM-OPDs. The optimized PM-OPDs showed excellent stability with no photocurrent decay after 70 days of storage in a nitrogen-filled environment, and they can be used to measure human heart rate.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Wenjing Xu, Xiong Li, Sang Young Jeong, Jae Hoon Son, Zhengji Zhou, Qiuju Jiang, Han Young Woo, Qinghe Wu, Xixiang Zhu, Xiaoling Ma, Fujun Zhang
Summary: Layer-by-layer polymer solar cells (LbL-PSCs) were prepared with PNTB6-Cl as the donor and Y6 as the acceptor using solvent additives DPE and DFB. The PCE of the optimal LbL-PSCs reached 17.53%, with over 7% enhancement compared to LbL-PSCs without solvent additives. Different solvent additives in the donor and acceptor solutions can optimize the photogenerated exciton distribution and charge transport. LbL-PSCs show better PCEs compared to bulk heterojunction PSCs, indicating their great potential for commercial application.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
