Professor Wang Chengliang of the School of Optoelectronic Information and Professor Hu Wenping of Tianjin University jointly wrote an article in the Royal Society of Chemistry's flagship journal Chemical Society Reviews (impact factor: 40.182, Chem. Soc. Rev. 2018, 47, 422) on January 21 For the review article of "Organic Semiconductor Crystals", the molecular arrangement, crystal growth and charge transport characteristics of conjugated organic materials are analyzed, the controllable preparation technology of organic semiconductor crystals is reviewed, and the methods for promoting charge transport are summarized from the perspective of device physics . It is reported that this review was selected as the inner cover article. It is expected to understand the characteristics of organic crystals, the control of morphology and accumulation structure, the identification of microscopic arrangements, the charge transport mechanism and the electronic states in crystals, as well as engaging in crystal growth and device physics. Research in this field is of guiding significance. Wang Chengliang is the first author and co-corresponding author of the article. Conjugated organic polymer materials are a type of functional materials with large conjugated systems and charge delocalization, which can stably gain and lose electronic states, realize charge transport, separation and combination. Based on these characteristics, conjugated organic polymer materials are used as semiconductor materials, driving the rapid development of organic electronics and flexible electronic equipment science and technology such as organic field effect transistors, light-emitting diodes and solar cells. Single crystals based on organic semiconductor materials are of great significance for studying the intrinsic properties of materials, revealing the relationship between structure and performance, guiding the next material design and obtaining high-performance devices. Wang Chengliang joined the School of Optics and Electronic Information of our school in 2016 and was selected into the Youth Thousand Talents Program of the Organization Department. After joining our school, he expanded his previous control experience in molecular design, single crystal, multifunctional micro-nano structure and charge transport in the field of organic electronics to the field of energy storage. Research (Adv. Mater. 2016, 28, 9182; Sci. Bull. 2017, 62, 1473; Chin. Chem. Lett. 2018, 29, 232; J. Phys. Chem. C 2018, DOI: 10.1021 / acs.jpcc .8b06170). The team of Wang Chengliang further conjugated the previous conjugated system (pentacenetetraone, Adv. Mater. 2016, 28, 9182) through further design and synthesis to obtain chain polymers and porous cross-linked polymers. The polymer polymer system retains the characteristics of conjugated system to form π-π stacking, promote charge transport and ion transport, and at the same time improve the stability of the material and inhibit the dissolution of the material, thereby achieving the capacity and fast charge of organic sodium ion battery The performance and long-term cycle performance are greatly improved. This series of work has important scientific significance and application value for promoting the application of conjugated organic materials in the field of energy storage and improving the performance of batteries through molecular design. The chain polymer shows good crystallinity, significant π-π stacking, high ion diffusion coefficient (10-9 cm2 / s), capacity up to 290 mAh / g, and also shows good performance during fast charge Performance (for example: 50 A / g, about 172C, the capacity is still 100 mAh / g, and the cycle is still stable after 10,000 cycles). The work was published in the Chem flagship flagship Chem (Chem 2018, 4, DOI: 10.1016 / j.chempr.2018.08.014, impact factor: 14.104). The article makes an in-depth analysis of the reasons for the stacked structure of the polymer and the good electrochemical performance. Dr. Tang Mi, the research group, is the first author of this article, and Wang Chengliang is the corresponding author. The theoretical calculation of this work was obtained by Professor Ma Jing of Nanjing University Great help. (Correspondent Zhu Yuling) Porous cross-linked polymers also exhibit good ion conduction properties, and this work was published in J. Phys. Chem. Lett. 2018, 9, 3205 (influence factor: 8.709). Li Hongyang, a graduate student of Lianpei, is the first author of this article. Wang Chengliang and Associate Professor Wang Erjing of Hubei University are co-corresponding authors. Achromat doublet lenses have significantly better optical performance than singlet lenses in visible imaging and laser beam manipulation applications.It consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths. One frequent use is to achieve diffraction limited focusing of a laser beam. Negative Achromat is typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced. We always make our achromats as precise specifications and tolerances for uncompromising image quality upon customer's requirement.
Doublet Achromatic Lens Triplet Achromatic Lens
Specification of our achromatic lens as follow: Achromatic Doublet Lens,Negative Optical Achromats Lens,Optical Achromatic Lens,Big Dimension Achromatic Lens China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com
*Material:BK7,ZF2,ZF7(or according to your request)
*Dia.:+0/-0.05
*Center thickness tolerance:+/-0.1
*Surface quality: 60-40 Scrath/Dig
*Surface figure:0.5-0.2
*Centration < 3arc min
*Chamfer:0.1-0.25*45 degrees
*Design wavelength:486.1mm,587.6mm,656.3mm and upon request.