Novel Organic Electroluminescent Materials in OLEDl l l Adv. Funct. Mater 2007-200815Adv. Mater 2007-200827：：：：OLED based on Iridium compounds 14Other host molecule :17Fluorene-Based Polymers 9Solar Cells: 21Iridium compounds2Other Organic Electroluminescent Materials、、1Efficient Organic Light -Emitting Diodes based on SublimableCharged Iridium Phosphorescent EmittersBy ,* , , , and 2007, , 315–323、l l Wai-Yeung Wong Gui-Jiang Zhou Xiao-Ming Yu Hoi-Sing Kwok Zhenyang LinAdv. Funct. Mater. 17l two new phosphorescent cationic iridium(III) cyclometalated diimine complexes are coordinated by cyclometalated ligands consisting of hole-transporting diphenylamino(DPA)-and fluorene-l l These robust iridium complexes can bethermally vacuum-sublimed and used as phosphorescent dyes for the fabrication of high-efficiency organic light-emitting diodes (OLEDs).These devices doped with 5 wt% can produce efficient electrophosphorescence with a maximum brightness of up to 15 610 cdm–2and a peak external quantum efficiency of ca. 7% photons per electron that corresponds to a12Tuning the Energy Level andPhotophysical and Electroluminescent Properties of Heavy Metal Complexes by Controlling the Ligation of the Metal with the Carbon of the Carbazole UnitC.L. Yang, X.W. Zhang, H. You, L.Y. Zhu, L.Q. Chen, L.N. Zhu, Y.T. Tao,D.G. Ma, Z.G. Shuai, J.G. Qin2007, , 651–661、l l Adv. Funct. Mater. 17Synthesis of the complexes –. l Scheme 1. 14l lThe difference in the ligation position results in significant shifts in the emission spectra with the changes in wavelength being 84 nm for the Ir complexes and 63 nm for the Pt complexes. The electrochemical behavior and photophysical properties of the complexes are investigated and correlate well with the results of density functional theory (DFT) calculations. Electroluminescent devices with a configuration of3Solution-Processible Multi-component Cyclometalated Iridium Phosphors for High-Efficiency Orange-Emitting OLEDs and Their Potential Use as White Light Sources、l By , ,* , , ,* and Cheuk-Lam Ho Wai-Yeung Wong Gui-Jiang Zhou Bing Yao Zhiyuan Xie Lixiang Wangl l Extension of the p-conjugation through incorporation of electronpushingcarbazole units to the fluorene fragment leads to bathochromic shifts in the emission profile, increases the highest occupied molecular orbital levels and improves the charge balance in the resulting complexes because of the propensity of the carbazole unit to facilitate hole transport.These iridium-based triplet emitters give a strong orange phosphorescence light5Manipulating Charge-Transfer Character with Electron -Withdrawing Main-Group Moieties for The Color Tuning of Iridium ElectrophosphorsBy Guijiang Zhou, Cheuk-Lam Ho, Wai-Yeung Wong,* Qi Wang, Dongge Ma,* Lixiang Wang, Zhenyang Lin,Todd B. Marder,* and Andrew Beeby、ll Tuning the emission color in IrIII-based triplet emitters using electron-withdrawing main-group moieties is described for the first time. This new color tuning strategy also provides access to IrIII phosphors with6High Efficiency and Small Roll -Off Electrophosphorescence from a New Iridium Complex with Well -Matched Energy Levels、l By , ,* , , , , , and Zhi Qiang Gao Bao Xiu Mi Hoi Lam Tam Kok Wai Cheah Chin Hsin Chen Man Shing Wong Shuit Tong Lee Chun Sing Leel l They have reported the synthesis, characterization, and deviceperformance investigation of a new phosphorescent material, Ir(BPPya)3. Through the study of the device physics with Ir(BPPya)3, we demonstrate that T–T annealing in PhOLED can beavoided if the energy levels of the host and the phosphorescent dopant are closely matched . And the emission from7Strong Luminescent IridiumComplexes with C N=N Structure in Ligands and Their Potential in Efficient and Thermally Stable Phosphorescent OLEDs (p NA)、^Bao Xiu Mi, Peng Fei Wang, Zhi Qiang Gao, Chun Sing Lee, Shuit Tong Lee, Hui Ling Hong, Xiao Ming Chen, Man Shing Wong, Ping Fang Xia, Kok Wai Cheah, Chin Hsin Chen, Wei Huangll l They have studied iridium complexeswith ligands bearing C^N––N type ligands. It is suggested that in complexes containing these ligands the bonding strength between the N atom and iridium should be stronger compared to those bearing C^N––CH type ligands, based on the shorter Ir–N bonding length obtained from calculations.Using a newly synthesized red-8En Route to High External Quantum 、Efficiency ( 12%), Organic True-Blue-Light-Emitting Diodes Employing Novel Design of Iridium (III) Phosphorsl By Yuan-Chieh Chiu, Jui-Yi Hung, YunChi,* Chung-Chia Chen, Chih-Hao Chang, Chung-Chih Wu,* Yi-Ming Cheng, Ya-Chien Yu, Gene-Hsiang Lee, and Pi-TaiChou*In conclusion, They have obtained phosphors and fabricated the organic true-blue-light-emitting diodes9Efficient, Color Stable White Organic Light-Emitting Diode Based on High Energy Level Yellowish-Green Dopants、l l By Young-Seo Park, Jae-Wook Kang, Dong Min Kang, Jong-Won Park, Yoon-Hi Kim, Soon-Ki Kwon, and Jang-Joo Kim*Adv. Mater. 2008, 20, 1957–196110Iridium Complexes with Cyclometalated2-Cycloalkenyl-Pyridine Ligands as Highly Efficient Emitters for Organic Light-Emitting Diodes、l l By Dong Min Kang, Jae-Wook Kang, Jong Won Park, Sung Ouk Jung, Se-Hyung Lee, Hyung-Dol Park, Yun-Hi Kim, Sung Chul Shin,* Jang-Joo Kim,* and Soon-Ki Kwon* Adv. Mater. 2008, 20, 2003–20071) 2)3) 4)1Iridium compounds2Other Organic ElectroluminescentMaterials、、11Ambipolar Conductive 2,7-Carbazole Derivatives forElectroluminescent Devices、l By , , , ,* , ,,* and *Jiun-Yi Shen Xiang-Lin Yang Tai-Hsiang Huang Jiann T. Lin Tung-Huei Ke Li-Yin Chen Chung-Chih Wu Ming-Chang P . YehFigure 1. Structures of the compounds used in this study.l l l A series of 2,7-disubstituted carbazole(2,7-carb) derivatives incorporating arylamines at the 2 and 7 positions are synthesized via palladium-catalyzed C–N or C–C bond formation.These compounds possess glass transition temperatures ranging from 87 to 217 C and exhibit good thermal stabilities, with thermal decomposition temperatures ranging from 388 to 480 C.They are fluorescent and emit in the purple-blue to orange region. Two types of organic light emitting diodes (OLEDs) were°°12Efficient Deep -Blue Organic Light-Emitting Diodes: Arylamine -Substituted Oligofluorenes2007、l Adv. Funct. Mater. 17, , 3194–3199l l Novel deep-blue-light-emitting diphenylamino and triphenylamino end-capped oligofluorenes were synthesized by double palladium-catalyzed Suzuki cross-coupling of dibromo-oligofluorene with the corresponding boronic acid as a key step.These oligofluorenes exhibit deep-blue emission (429–432 nm), high fluorescence quantum yield (FL= 0.61–0.93), and good thermal properties (g=UT13Tetraphenylimidazole-Based Excited-State Intramolecular Proton-Transfer Molecules for Highly Efficient Blue Electroluminescence、l l By Sanghyuk Park, Jangwon Seo, Se Hun Kim, and Soo Young Park*Adv. Funct. Mater. 2008, 18, 726–731l Novel hydroxyl-substituted tetraphenylimidazole derivatives promise efficient bright-blue electroluminescence as shown in the figure. Devices based on these structures attained current densities of 1.96 cd A-1143-(9-Carbazolyl)carbazoles and 3,6-Di(9-carbazolyl)carbazoles as Effective Host Materials for Efficient Blue OrganicElectrophosphorescence2007、l l M.-H. Tsai, Y .-H. Hong, C.-H. Chang, H.-C. Su,C.-C. Wu, A. Matoliukstyte, J. Simokaitiene, S. Grigalevicius, J.V. Grazulevicius, C.-P . Hsu , , 862–866Adv. Mater. 1915High-Efficiency Blue Light -Emitting Diodes Based on aPolyphenylphenyl Compound with Strong Electron-Accepting Groups2007、l lX.J. Xu, S.Y . Chen, G. Yu, C. A. Di, H. You,D.G. Ma, Y .Q. Liu, , 1281–1285Adv. Mater. 1916Highly Efficient Carbazole--Dimesitylborane Bipolar Fluorophores for Nondoped Blue Organic Light-Emitting Diodes 、l l By Shin-Lei Lin, Li-Hsin Chan, Rong-Ho Lee, Ming-Yu Yen, Wen-Jang Kuo,*Chin-Ti Chen,* and Ru-Jong Jeng*、17Could Green be Greener? Novel Donor-Acceptor-Type Electrochromic Polymers: Towards Excellent Neutral Green Materials with Exceptional Transmissive Oxidized States for Completion of RGB Color Space18 A Dithienylbenzothiadiazole Pure Red Molecular Emitter with Electron Transport and Exciton Self-Confinement for Nondoped Organic Red-Light-Emitting Diodes、l l By Ju Huang, Xianfeng Qiao, Yangjun Xia, Xuhui Zhu,* Dongge Ma, Yong Cao, and Jean Roncali*Adv. Mater. 2008, 20, 4172–417519 A Novel Fluorene-Triphenylamine Hybrid That is a Highly Efficient Host Material for Blue-, Green-, and Red-Light-Emitting Electrophosphorescent Devices2007、l l P .-I Shih, C.-H. Chien, F.-I. Wu, C.-F. Shu , , 3514–3520Adv. Funct. Mater. 17l TFTPA , a novel host material that contains a triphenylamine core and three 9-phenyl-9-fluorenyl peripheries, was effectively synthesized through a Friedel-Crafts-l l Owing to the presence of its sterically bulky 9-phenyl-9-fluorenyl groups, exhibits a high glass transition temperature (186 C) and ismorphologically and electrochemically stable.In addition, as demonstrated fromatomic force microscopy measurements, the aggregation of the triplet iridiumTFTPA °20New Host Containing Bipolar Carrier Transport Moiety for High-Efficiency Electrophosphorescence at Low Voltages、l l By Zhi Qiang Gao,* Meiming Luo, Xiao Hua Sun, Hoi Lam Tam, Man Shing Wong,* Bao Xiu Mi, Ping Fang Xia, Kok Wai Cheah, and Chin Hsin Chen。