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| 1 | Highly efficient and stable white LEDs based on pure red narrow bandwidth emission triangular carbon quantum dots for wide-color gamut backlight displays显示文摘High-performance white light-emitting diodes (WLEDs) hold great potential for the next-generation backlight display applications.However,achieving highly efficient and stable WLEDs with wide-color-gamut has remained a formidable goal.Reported here is the first example of pure red narrow bandwidth emission triangular CQDs (PR-NBE-T-CQDs) with photoluminescence peaking at 610 nm.The PR-NBE-T-CQDs synthesized from resorcinol show high quantum yield (QY) of 72% with small full width at half maximum of 33 nm.By simply controlling the reaction time,pure green (PG-) NBE-T-CQDs with high QY of 75% were also obtained.Highly efficient and stable WLEDs with wide-color-gamut based on PR- and PG-NBE-T-CQDs was achieved.This WLED showed a remarkable wide-color gamut of 110% NTSC and high power efficiency of 86.5 lumens per Watt.Furthermore,such WLEDs demonstrate outstanding stability.This work will set the stage for developing highly efficient,low cost and environment-friendly WLEDs based on CQDs for the next-generation wide-color gamut backlight displays. | Fanglong Yuan Ping He Zifan Xi Xiaohong Li Yunchao Li Haizheng Zhong Louzhen Fan Shihe Yang | 2019 | Nano Research2019，12，7： | 12 |
| 2 | Single small molecule-assembled nanoparticles mediate efficient oral drug delivery显示文摘Oral drug delivery,which requires surviving the harsh environment in the gastrointestinal(Gl)tract and penetrating the intestinal epithelium,has not bee n achieved using simple formulatio n nan oparticles(NPs).Medici nal natural products(MNPs)have bee n widely used in traditi onal medicine for disease management through oral consumption.However,most pharmacologically active compounds within MNPs do not have the properties suitable for oral applicatio ns.We hypothesize that some MNPs contain n atural nano materials that can convert those compounds into oral formulations by forming NPs.After screening 66 MNPs,we identified five classes of small molecules that form NPs,many of which are capable of efficient drug encapsulation and Gl penetration.We show that one of them,dehydrotrametenolic acid(DTA),is capable of mediating oral delivery for effective disease treatment.We determined that DTA NPs assemble through hydrogen bonding and penetra怕the Gl tract via apical sodium-depe ndent bile acid tran sporter.Our study reveals a no vel class of single comp orient,small molecule-assembled NPs for oral drug delivery,and suggests a n ovel approach to modernizi ng MNPs through nano material discovery. | Xin Yang Chao Ma Zeming Chen Jun Liu Fuyao Liu Rongbin Xie Haitian Zhao Gang Deng Ann TChen Ningbo Gong Lei Yao Pengjian Zuo Kangkang Zhi Jiacheng Wang Xiaobin Gao Jing Wang Louzhen Fan Jiangbing Zhou | 2019 | Nano Research2019，12，10： | 4 |
| 3 | Electrochemical synthesis of sulfur-doped graphene sheets for highly efficient oxygen reduction显示文摘Sulfur(S)-doped graphene sheets were prepared by a facile electrochemical method, which effectively combined exfoliation of graphite and in situ S doping of graphene together. The metal-free S-doped graphene sheets exhibit high electrocatalytic activity, long-term stability, and excellent tolerance to cross-over effects of methanol in alkaline media for the oxygen reduction reaction(ORR), indicating that these S-doped graphene sheets possess great potential for a substitute for Pt-based catalysts in fuel cells. | Shuhua Li Ling Ding Louzhen Fan | 2015 | Science China Chemistry2015，58，3： | 3 |
| 4 | Erratum to:Highly efficient and stable white LEDs based on pure red narrow bandwidth emission triangular carbon quantum dots for wide-color gamut backlight displays显示文摘In the version of this article originally published,Figs.2(d)and 3(a),and Figs.S3 and S6 in the Electronic Supplementary Material(ESM)were incorrect.The corrected images are shown below. | Fanglong Yuan Ping He Zifan Xi Xiaohong Li Yunchao Li Haizheng Zhong Louzhen Fan Shihe Yang | 2020 | Nano Research2020，13，8： | 2 |
| 5 | Photoconductivity of fullerene derivatives显示文摘Two fullerene derivatives (compounds 1 and 2) have been synthesized. Their redox properties have been measured by cyclic voltammetry. The photoconductivities of poly(N_vinylcarbazo_le) (PVK) doped with fullerene and with their derivatives have been studied to explore the possible relationship between the reductibility of fullerenes and the photoconductivity of fullerenes_doped PVK. The charge generation efficiencies of PVK doped with fullerene and with its derivatives have changed remarkably: the diversity of charge generation efficiency is obvious in different doping systems. The result indicates that there is charge transfer between fullerenes and PVK. | LI Fengying, XU Juhua, LI Yuliang, FAN Louzhen, REN Deyuan and ZHU Daoben Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China | 1998 | Chinese Science Bulletin1998，43，24： | 1 |
| 6 | Phosphorus-induced electronic structure reformation of hollow NiCo_(2)Se_(4) nanoneedle arrays enabling highly efficient and durable hydrogen evolution in all-pH media显示文摘With practical electrocatalytic hydrogen production frequently involving the splitting of water in various pH media,there is an urgent need but still a technical challenge to develop low-cost,highly active,and stable electrocatalysts for pH-universal hydrogen evolution reaction(HER).We report herein the adoption of a hydrothermal reaction combined with a post gas-phase doping strategy to fabricate P-doped NiCo_(2)Se_(4) hollow nanoneedle arrays on carbon fiber paper(i.e.,P-NiCo_(2)Se_(4)/CFP).Notably,the optimal arrays(P8.71-NiCo_(2)Se_(4)/CFP)can afford an outstanding pH-universal HER performance,with an overpotential as low as 33,57,and 69 mV at 10 mA·cm^(−2) and corresponding Tafel slopes down to 52,61,and 72 mV·dec^(−1) in acidic,alkaline,and neutral media,respectively,outperforming most state-of-the-art nonprecious catalysts and even the commercial Pt/C catalyst in both neutral and alkaline media at large current densities.Impressively,P_(8.71-)NiCo_(2)Se_(4)/CFP also displays good durability toward long-time stability testing in harsh acidic and alkaline electrolytes.Experimental and theoretical studies further reveal that the doping of P atoms into NiCo_(2)Se_(4) can simultaneously optimize its H*adsorption/desorption energy,water adsorption energy,and water dissociation energy by adjusting the local electronic states of various active sites,thus accelerating the rate-determining step of HER in different pH media to endow P-NiCo_(2)Se_(4) with an outstanding pH-universal HER performance.This work provides atomic-level insights into the roles of active sites in various electrolysis environments,thereby shedding new light on the rational design of highly efficient pH-universal nonprecious catalysts for HER and beyond. | Guojing Wang Yuzhuo Sun Yidan Zhao Yang Zhang Xiaohong Li Louzhen Fan Yunchao Li | 2022 | Nano Research2022，15，10： | 1 |
| 7 | Carbon dots:An innovative luminescent nanomaterial显示文摘In recent years,carbon dots(CDs),including carbon nanodots,carbonized polymer dots,carbon quantum dots,and graphene quantum dots have attracted a mounting interest as readily accessible,nontoxic,and relatively inexpensive carbon-based nanomaterials.Yet,despite intense research for a number of years,a unifying picture is still lacking to clarify the exact definition,clear chemical structure,and unique optical properties of this family of nanomaterials.In this review,we systematically summarize the recent development of CDs from molecular design to related properties of excited states as well as their applications in optoelectronic devices and biology.We point out the current challenges,including exploring precise synthesis,clarifying the structure-property relationship,and regulating singlet and triplet states of fluorescence,phosphorescence,and delayed fluorescence.Moreover,the structural optimization of optoelectronic devices,tumor targeting mechanism,selective imaging,and drug delivery of CDs are also highlighted.We hope that the information provided in this review will inspire more exciting research on CDs from a brand-new perspective and promote practical application of CDs in multiple directions of current and future research. | Yuxin Shi Huimin Xu Ting Yuan Ting Meng Hao Wu Jianqiao Chang Haoyu Wang Xianzhi Song Yunchao Li Xiaohong Li Yang Zhang Wenjing Xie Louzhen Fan | 2022 | Aggregate2022，3，3： | 0 |
| 8 | Recent Advance in Carbon Dots: From Properties to Applications显示文摘As a new type of nanomaterial,carbon dots(CDs)have been recognized as a versatile nanoplatform with enormous potential for biomedical and optoelectronic applications because of low cytotoxicity,photostability,biocompatibility and versatility in addition to their tunable photoluminescence.In this review,we aim at updating the latest research on preparation,optoelectronic and chemical properties of CDs as well as their biomedical and optoelectronic applications.We highlight the applications of CDs for stem cell imaging,cell nucleus imaging,two-photon fluorescence imaging,tumor diagnosis and therapy and their optoelectronic applications including light-emitting diodes(LEDs),solar cells and electrocatalysis.Furthermore,we also discuss current challenges and breakthroughs on machine-learning-driven synthesis of CDs as well as nucleic acid detection with an eye towards the future.Finally,we hope that this review will give further impulses to target-oriented research on CDs for biomedical and optoelectronic applications. | Hao Wu Huimin Xu Yuxin Shi Ting Yuan Ting Meng Yang Zhang Wenjing Xie Xiaohong Li Yunchao Li Louzhen Fan | 2021 | Chinese Journal of Chemistry2021，39，5： | 0 |
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