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The redox-active quinone-functionalized macrocyclic ligand 1,4,14,17-tetrahydroxyhemiporphyrazine, H2hp(OH)4, has been synthesized and its zinc complex, [Zn(hp(OH)4)(py)], found to exhibit intense fluorescence. 相似文献
74.
Fukuda T Olmstead MM Durfee WS Kobayashi N 《Chemical communications (Cambridge, England)》2003,(11):1256-1257
A subphthalocyanine (SubPc) dimer linked by racemic 1,1'-binaphth-2,2'-dioxy (BINOL), 1, has been synthesized and characterized by 1- and 2-D 1H NMR, high resolution mass spectrometry (FAB), X-ray crystallography and electronic absorption spectroscopy. Additionally, the dimer derived from optically-active (R)-(+)-BINOL, 2, has been made and studied using CD and MCD spectroscopies. 相似文献
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Ultrafast laser and amplifier sources 总被引:1,自引:0,他引:1
A. Rundquist C. Durfee Z. Chang G. Taft E. Zeek S. Backus M.M. Murnane H.C. Kapteyn I. Christov V. Stoev 《Applied physics. B, Lasers and optics》1997,65(2):161-174
Received: 28 April 1997/Revised version: 15 May 1997 相似文献
77.
Koster S Duursma MC Boon JJ Nielen MW de Koster CG Heeren RM 《Journal of mass spectrometry : JMS》2000,35(6):750-759
In order to keep subscribers up-to-date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Books, Reviews & Symposia; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (5 Weeks journals - Search completed at 22nd. Mar 2000) 相似文献
78.
Despite all the advances in nonlinear microscopy, all existing instruments are constrained to obtain images of one focal plane at a time. In this Letter we demonstrate a two-photon absorption fluorescence scanning microscope capable of imaging two focal planes simultaneously. This is accomplished by temporally demultiplexing the signal coming from two focal volumes at different sample depths. The scheme can be extended to three or more focal planes. 相似文献
79.
J. Squier J. Thomas E. Block C. Durfee S. Backus 《Applied Physics A: Materials Science & Processing》2014,114(1):209-214
A watt level, 10-kz repetition rate chirped pulse amplification system that has an integrated simultaneous spatial and temporal focusing (SSTF) processing system is demonstrated for the first time. SSTF significantly reduces nonlinear effects normally detrimental to beam control enabling the use of a low numerical aperture focus to quickly treat optically transparent materials over a large area. The integrated SSTF system has improved efficiency compared to previously reported SSTF designs, which combined with the high-repetition rate of the laser, further optimizes its capability to provide rapid, large volume processing. 相似文献
80.
Planchon TA Amir W Field JJ Durfee CG Squier JA Rousseau P Albert O Mourou G 《Optics letters》2006,31(14):2214-2216
By using the third-harmonic signal generated at an air-dielectric interface, we demonstrate a novel way of correcting wavefront aberrations induced by high-numerical-aperture optics. The third harmonic is used as the input physical parameter of a genetic algorithm working in closed loop with a 37-actuator deformable mirror. This method is simple and reliable and can be used to correct aberrations of tightly focused beams, a regime where other methods have limitations. Improvement of the third-harmonic signal generated with an f/1.2 parabolic mirror by 1 order of magnitude is demonstrated. 相似文献