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| 1 | Two-dimensional self-organization of 1-nonanethiol-capped gold nanoparticles显示文摘A two-dimensional (2D) ordered hexagonal close-packed structure, formed by 1-nonanethiol-capped gold nanoparticles, is reported. The structure was constructed only by dipping the gold nanoparticle colloidal solution on flat substrate. The gold nanoparticles were synthesized as follows: First, AuCl4-1 was transferred from aqueous solution to toluene by the phase-transfer reagent of tetraoc-tylanunonium bromide. Then it was reduced with aqueous sodium borohydride in the presence of a given amount of 1-nonanethiol molecules which was used to control the nu-cleation and growth of the gold nanoparticles for the desired size. The experimental techniques, such as UV-Vis, FT-IR, and X-ray photoelectron spectroscopy (XPS), were employed to characterize the obtained product. Transmission electron microscopy (TEM) measurement demonstrated the size of the gold nanoparticle and the formation of two-dimensional ordered hexagonal close-packed gold nanoparticle structure. | JIANG Peng XIE Sishen YAO Jiannian HE Shengtai ZHANG Haoxu SHI Dongxia PANG Shijin GAO Hongjun | 2001 | Chinese Science Bulletin2001，46，12： | 5 |
| 2 | Tuneable red,green,and blue single-mode lasing in heterogeneously coupled organic spherical microcavities显示文摘Tuneable microlasers that span the full visible spectrum,particularly red,green,and blue(RGB)colors,are of crucial importance for various optical devices.However,RGB microlasers usually operate in multimode because the mode selection strategy cannot be applied to the entire visible spectrum simultaneously,which has severely restricted their applications in on-chip optical processing and communication.Here,an approach for the generation of tuneable multicolor single-mode lasers in heterogeneously coupled microresonators composed of distinct spherical microcavities is proposed.With each microcavity serving as both a whispering-gallery-mode(WGM)resonator and a modulator for the other microcavities,a single-mode laser has been achieved.The colors of the single-mode lasers can be freely designed by changing the optical gain in coupled cavities owing to the flexibility of the organic materials.Benefiting from the excellent compatibility,distinct color-emissive microspheres can be integrated to form a heterogeneously coupled system,where tuneable RGB single-mode lasing is realized owing to the capability for optical coupling between multiple resonators.Our findings provide a comprehensive understanding of the lasing modulation that might lead to innovation in structure designs for photonic integration. | Yuxiang Du Chang-Ling Zou Chunhuan Zhang Kang Wang Chan Qiao Jiannian Yao Yong Sheng Zhao | 2020 | Light(Science & Applications)2020，9，1： | 4 |
| 3 | Hybrid Three-Dimensional Spiral WSe2 Plasmonic Structures for Highly Efficient Second-Order Nonlinear Parametric Processes显示文摘Two-dimensional(2D)layered materials,with large second-order nonlinear susceptibility,are currently growing as an ideal candidate for fulflling tunable nanoscale coherent light through the second-order nonlinear optical parametric processes.However,the atomic thickness of 2D layered materials leads to poor feld confnement and weak light-matter interaction at nanoscale,resulting in low nonlinear conversion efciency.Here,hybrid three-dimensional(3D)spiral WSe2 plasmonic structures are fabricated for highly efcient second harmonic generation(SHG)and sum-frequency generation(SFG)based on the enhanced light-matter interaction in hybrid plasmonic structures.Te 3D spiral WSe2,with AA lattice stacking,exhibits efcient SH radiation due to the constructive interference of nonlinear polarization between the neighboring atomic layers.Tus,extremely high external SHG conversion efciency(about 2.437×10−5)is achieved.Moreover,the ease of phase-matching condition combined with the enhanced light-matter interaction in hybrid plasmonic structure brings about efcient SHG and SFG simultaneously.Tese results would provide enlightenment for the construction of typical structures for efcient nonlinear processes. | Xianqing Lin Yingying Liu Kang Wang Xiaolong Liu Yongli Yan Yong Jun Li Jiannian Yao Yong Sheng Zhao | 2018 | Research2018，，1： | 4 |
| 4 | Achieving high short-circuit current and fill-factor via increasing quinoidal character on nonfullerene small molecule acceptor显示文摘Recently, the fused-ring based low band gap(LBG) small molecule acceptors(SMAs) have emerged as efficient nonfullerene acceptors. So far, these LBG SMAs are mainly designed with IC(2-methylene-(3-(1,1-dicyanomethylene)indanone)) or its analogs, the benzo-type electron-accepting(A) units. Compared to benzene, thiophene is less aromatic and thus the thiophene-involving semiconducting molecule has more quinoidal character, which effectively reduces the energy gap between the highest occupied molecular orbit(HOMO) and the lowest unoccupied molecular orbit(LUMO). Herein, we show that replacing the IC units in ITIC with the CT(cyclopenta[c]thiophen-4-one-5-methylene-6-(1,1-dicyanomethylene)), a thiophene-fused A unit, the quinoidal character is enhanced from 0.0353 on ITIC to 0.0349 on ITCT, the CT-ended SMA. The increase in the quinoidal character reduces the optical band gap and enhances the near IR absorptivity. When blended with the wide band gap(WBG) polymer donor, PBDB-T,an average power conversion efficiency of 10.99% is obtained with a short-circuit current-density(J_(sc)) of17.88 mA/cm^2 and a fill-factor(FF) of 0.723. For comparisons, the J_(sc) is of 16.92 mA/cm^2, FF is of 0.655 and PCE is of 9.94% obtained from the ITIC:PBDB-T device. This case indicates that the replacement of the benzene ring on the IC unit with a more polarizable five-member ring such as thiophene is an effective way to enhance the absorption of the near IR solar photons towards designing high-performance nonfullerene polymer solar cells. | Wenxu Liu Weiping Li Jiannian Yao Chuanlang Zhan | 2018 | Chinese Chemical Letters2018，29，3： | 2 |
| 5 | High-efficiency quaternary polymer solar cells enabled with binary fullerene additives to reduce nonfullerene acceptor optical band gap and improve carriers transport显示文摘The polymer/small-molecule electron donor and nonfullerene organic electron acceptor are of structural similarity with both donor and acceptor molecules consisting of polycyclic fused-ring backbone and being decorated with alkyl-chains.In this study,we report that the introduction of binary fullerenes(C_(60)-/C_(70)-PCBM and C_(60)-/C_(70)-ICBA)into a nonfullerene binary system PBDB-T:ITIC reduces the polymer-nonfullerene acceptor intermixing,obtaining higher crystallinity with(100)crystal coherence length from 28 to 29–33 nm for the ITIC,and from 14 to 20–24 nm for the PBDB-T,and improved electron and hole mobilities both.Unprecedentedly,such a protocol reduces the ITIC optical band gap from 1.59 to 1.55 eV.As consequences,higher short-circuit current-density(17.8–18.4 vs.15.8 m A/cm^2),open-circuit voltage(0.92 vs.0.90 V)and fill-factor(0.72–0.73 vs.0.68)are simultaneously obtained,which ultimately afford higher efficient quaternary polymer solar cells with power conversion efficiencies(PCEs)up to 12.0%–12.8%comparing to the host binary device with 9.9%efficiency.For the polymer,ITIC,and ICBA/PCBM ternary blends,11%PCEs were recorded.The use of PCBM leads to larger red-shifting in thin film absorption and external quantum efficiency(EQE)response.Such effect is more pronounced when ICBA:PCBM mixture is used.These results indicate the size and shape of C_(60)and C_(70)as well as the substituent position of the second indene unit on C_(60)-/C_(70)-ICBA affect not only the blend morphology but also the electronic coupling in BHJ mixtures:the quaternary device performance increased in sequences of C_(70)-PCBM:C_(70)-ICBA→C_(70)-PCBM:C_(60)-ICBA→C_(60)-PCBM:C_(70)-ICBA→C_(60)-PCBM:C_(60)-ICBA.The resonant soft X-ray scattering(RSoXS)data indicated the most refined phase separation in the C_(60)-PCBM:C_(60)-ICBA based blend,corresponding to its best device function among the quaternary devices.These results indicate that the using of binary fullerenes as the acceptor additives allows for tuning nonfullerene blended film’s optical properties and filmmorphologies,shedding light on the designing high-performance multi-acceptor polymer solar cells. | Weiping Li Dong Yan Feng Liu Thomas Russell Chuanlang Zhan Jiannian Yao | 2018 | Science China Chemistry2018，61，12： | 2 |
| 6 | A Novel BODIPY-Based Low-Band-Gap Small-Molecule Acceptor for Efficient Non-fullerene Polymer Solar Cells显示文摘我们此处报导由跟随 A-to-A 的小分子的 4,4-difluoro-4-bora-3a,4a-diaza-s- indacene (BODIPY ) 领受人(1=BODIPY 和 2=diketopyrrolopyrrole (DPP )) 激动的一种有效 A 1-CC-A2-CC-A1 类型经由 BODIPY 中央位置的电子 delocalization,为激动的电子 delocalization 的固有的 directionality。最低没有住分子轨道(LUMO ) 在全部上去除到对面二 flanking A 1 和中央 A 2, 并且最高占据了分子轨道(人) 在 -CC-DPP-CC- 片断上主导地本地化。在 DPP 片断的轻刺激之上的激动的电子在 BODIPY 和 DPP 片断上去除。在氯仿的领受人与 195 nm 的大 FWHM 价值显示出在 550 和 700 nm 之间的崭新的像高原的宽广吸收。在进稳固的电影的转变之上,领受人在 ultraviolet-visible-near 附近在全部显示出吸收有 1.5 eV 的低乐队差距和 0.85 污敤票敤 ? 潳楤浵愠楺敤漻敮瀭瑯琻牨敥 ' 礉棤剳 V 瑣潩 ? 的最大的吸收率的红外线的波长区域(300-830 nm )?? 水 ? | Wenxu Liu Jiannian Yao Chuanlang Zhan | 2017 | Chinese Journal of Chemistry2017，35，12： | 1 |
| 7 | The 100 kJ modular pulsed power units for railgun显示文摘 | DONG Jiannian ZHANG Jun LI Jun | 2011 | IEEE Transac- tions on Plasma Science2011，39，1： | 1 |
| 8 | Smart responsive organic microlasers with multiple emission states for high-security optical encryption显示文摘Modern high-security cryptography and optical communication call for covert bit sequences with high coding capacity and efficient authentication.Stimuli-responsive lasing emissions with easily distinguishable readout are promising in the coding field as a novel cryptographic primitive,while the application is frequently restricted by the limited number of emission states.Here,we report a strategy of achieving multiple competitive lasing signals in responsive organic microspheres where a donor–acceptor pair was introduced.The competitive lasing from the donor and acceptor was reversibly switched by modulating the competition between the radiative rate of the donor and the rate of energy transfer,and the generated multiple lasing signals enabled a quaternary coding for recognizable cryptographic implementation.Data encryption and extraction were demonstrated using a 4×4 microlaser array,showing vast prospects in avoiding the disclosure of security information.The results offer a comprehensive understanding of excited-state dynamics in organic composite materials,which may play a major role in high-security optical recording and information encryption. | Zhenhua Gao Kang Wang Yongli Yan Jiannian Yao Yong Sheng Zhao | 2021 | National Science Review2021，8，2： | 1 |
| 9 | A Novel 28 GHz Phased Array Antenna for 5G Mobile Communications显示文摘A novel phased array antenna consisting of 256 elements is presented and experimentally verified for 5G millimeter-wave wireless communications.The antenna integrated with a wave control circuit can perform real-time beam scanning by reconfiguring the phase of an antenna unit.The unit,designed at 28 GHz using a simple patch structure with one PIN diode,can be electronically controlled to generate 1 bit phase quantization.A prototype of the antenna is fabricated and measured to demonstrate the feasibility of this approach.The measurement results indicate that the antenna achieves high gain and fast beam-steering,with the scan beams within±60°range and the maximum gain up to 21.7 dBi.Furthermore,it is also tested for wireless video transmission.In ZTE Shanghai,the antenna was used for the 5G New Radio(NR)test.The error vector magnitude(EVM)is less than 3%and the adjacent channel leakage ratio(ACLR)less than−35 dBc,which can meet 5G system requirements.Compared with the conventional phased array antenna,the proposed phased array has the advantages of low power consumption,low cost and conformal geometry.Due to these characteristics,the antenna is promising for wide applications in 5G millimeter-wave communication systems. | LI Yezhen REN Yongli YANG Fan XU Shenheng ZHANG Jiannian | 2020 | ZTE Communications2020，18，3： | 1 |
| 10 | Engineering Spin States of Isolated Copper Species in a Metal-Organic Framework Improves Urea Electrosynthesis显示文摘The catalytic activities are generally believed to be relevant to the electronic states of their active center, but understanding this relationship is usually difficult. Here, we design two types of catalysts for electrocatalytic urea via a coordination strategy in a metal–organic frameworks: Cu^(Ⅲ)-HHTP and Cu^(Ⅱ)-HHTP. Cu^(Ⅲ)-HHTP exhibits an improved urea production rate of 7.78 mmol h^(−1)g^(−1) and an enhanced Faradaic efficiency of 23.09% at-0.6 V vs. reversible hydrogen electrode, in sharp contrast to Cu^(Ⅱ)-HHTP.Isolated CuⅢspecies with S = 0 spin ground state are demonstrated as the active center in Cu^(Ⅲ)-HHTP, different from Cu^(Ⅱ) with S = 1/2 in Cu^(Ⅱ)-HHTP. We further demonstrate that isolated Cu^(Ⅲ)with an empty dx2-y20orbital in Cu^(Ⅲ)-HHTP experiences a single-electron migration path with a lower energy barrier in the C–N coupling process, while Cu^(Ⅱ)with a single-spin state( d_(x2-y2)^(1)) in Cu^(Ⅱ)-HHTP undergoes a two-electron migration pathway. | Yuhang Gao Jingnan Wang Yijun Yang Jian Wang Chuang Zhang Xi Wang Jiannian Yao | 2023 | Nano-Micro Letters2023，15，9： | 1 |
| 11 | Photochromism in Composite and Hybrid Materials Based on Transition-Metal Oxides and Polyoxometalates显示文摘 | HE Tao YAO Jiannian | 2006 | Materials Science2006，51，6： | 1 |
| 12 | Enhanced visible-light coloration and its mechanism of MoO 3 thin films by Au nanoparticles显示文摘 | Tao He Ying Ma Yaan Cao Yanhua Yin Wensheng Yang Jiannian Yao | 2001 | Applied Surface Science2001，，： | 1 |
| 13 | An Optically Reconfigurable Förster Resonance Energy Transfer Process for Broadband Switchable Organic Single-Mode Microlasers显示文摘Miniaturized lasers with multicolor output and high spectral purity are indispensable for various ultracompact photonic devices.Here,we propose an optically reconfigurable Förster resonance energy transfer(FRET)process to realize broadband switchable single-mode lasing based on in situ activation of acceptors.The stoichiometric ratio of the donor and acceptor in the ready-made microstructures could be modulated readily by precisely activating the acceptors through a photoisomerization process,leading to a reconstructed FRET process to achieve dynamically switchable lasing.Furthermore,dual-color switchable single-mode lasing was realized by selectively constructing the FRET process in an identical coupled microdisks system.These results advance a comprehensive understanding of excited-state dynamics in organic composite material systems,thereby providing new ideas for the rational design of miniaturized photonic materials and devices with desired performances. | Chan Qiao Chunhuan Zhang Zhonghao Zhou Jiannian Yao Yong Sheng Zhao | 2022 | CCS Chemistry2022，4，1： | 1 |
| 14 | Editorial显示文摘Time has come to celebrate the one-year birthday of CCS Chemistry!One year ago,we published the inaugural issue of our flagship journal.A lot has happened in the short time since the journal launch,not the least of which has been the global outbreak of the COVID-19 pandemic.We live in an increasingly interconnected world which makes it essential to work together and share our collective knowledge across boarders for the betterment of society. | Jiannian Yao Xi Zhang Donna J.Minton | 2020 | CCS Chemistry2020，2，2： | 1 |
| 15 | Wavelength-Tunable Single-Mode Microlasers Based on Photoresponsive Pitch Modulation of Liquid Crystals for Information Encryption显示文摘Information encryption and decryption have attracted particular attention;however,the applications are frequently restricted by limited coding capacity due to the indistinguishable broad photoluminescence band of conventional stimuli-responsive fluorescent materials.Here,we present a concept of confidential information encryption with photoresponsive liquid crystal(LC)lasing materials,which were used to fabricate ordered microlaser arrays through a microtemplate-assisted inkjet printing method.LC microlasers exhibit narrow-bandwidth single-mode emissions,and the wavelength of LC microlasers was reversibly modulated based on the optical isomerization of the chiral dopant in LCs.On this basis,we demonstrate phototunable information authentication on LC microlaser arrays using the wavelength of LC microlasers as primary codes.These results provide enlightenment for the implementation of microlaser-based cryptographic primitives for information encryption and anticounterfeiting applications. | Fa-Feng Xu Zhong-Liang Gong Yu-Wu Zhong Jiannian Yao Yong Sheng Zhao | 2020 | Research2020，，1： | 1 |
| 16 | Photodegradation of Rhodamine B catalyzed by TiO2thin films 显示文摘 | MA Ying YAO Jiannian | 1998 | J Phot℃ hem Photobiol A: Chem1998，116，： | 1 |
| 17 | 显示文摘 | Zhao Yong sheng Fu Hongbing Yao Jiannian | 2008 | Adv Mater2008，20，： | 1 |
| 18 | 显示文摘 | Shen Fugang Peng Aidong Yao Jiannian | 2008 | J Phys Chem A2008，112，： | 1 |
| 19 | Green synthesis of a Pt nanoparticle/polyoxometalate/carbon nanotube tri-component hybrid and its activity in the electrocatalysis of methanol oxidation显示文摘 | Shiwen Li Xuelian Yu Guangjin Zhang Ying Ma Jiannian Yao Pedro de Oliveira | 2011 | Carbon2011，，6： | 1 |
| 20 | Photochromism of molybdenum oxide 显示文摘 | Tao He Jiannian Yao | 2003 | Photochemistry and Photobiology2003，4，： | 1 |
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