Measurement of fluorescence quantum yield has become an important tool in the search for new solutions in the development, evaluation, quality control and research of illumination, AV equipment, organic EL material, films, filters and fluorescent probes for bio-industry. Elevated increases sink strength in optimal environments, resulting in sustained increases in photosynthetic capacity, canopy quantum yield and daily C gain throughout the life cycle.Ībsolute quantum yield measurement of powder samples. These data indicate that plant communities adapt to CO2 enrichment through changes in C allocation. Harvest index and chlorophyll concentration were unchanged, but CO2 enrichment increased average life cycle net photosynthesis (13%, P < 0.05) and root respiration (24%, P < 0.05). CO2 enrichment increased root mass, tiller number and seed mass. Neither radiation capture efficiency nor carbon use efficiency were affected by elevated, but yield increased by 13% due to a sustained increase in canopy quantum yield. At harvest, dry mass predicted from gas exchange data was 102.8 +/- 4.7% of the observed dry mass in six trials. A rapidly circulating hydroponic solution supplied nutrients, water and root zone oxygen. Canopies were grown at either 330 or 1200 micromoles mol-1 in controlled environments, where root and shoot C fluxes were monitored continuously from emergence to harvest. Veery 10) productivity was examined by analysing radiation capture, canopy quantum yield, canopy carbon use efficiency, harvest index and daily C gain. The effect of elevated on wheat (Triticum aestivum L. KGaA, Weinheim.Īdaptation to high CO2 concentration in an optimal environment: radiation capture, canopy quantum yield and carbon use efficiency Li, Wenlong Jiao, Changhong Li, Xin Xie, Yongshu Nakatani, Keitaro Tian, He Zhu, WeihongĮndowing both solvent independency and excellent thermal bistability, the benzobis(thiadiazole)-bridged diarylethene system provides an efficient approach to realize extremely high photocyclization quantum yields (Φo-c, up to 90.6 %) by both separating completely pure anti-parallel conformer and suppressing intramolecular charge transfer (ICT). Separation of photoactive conformers based on hindered diarylethenes: efficient modulation in photocyclization quantum yields. This work will offer useful support for improving the CRET studies based on quantum dots. Furthermore, the multiplexed CRET between luminol donor and three different sizes QD acceptors was observed simultaneously. It suggests that the quantum yield of the QD in different status is the crucial factor to the CRET efficiency. The same result was observed in another similar set of experiment, in which the amphiphilic polymer modified QDs (emission at 675 nm) were used. This result is coincident with the quantum yields of the acceptors (18.3% and 0.4%). The highest CRET efficiency (10.7%) was obtained in the case of oil soluble QDs, and the lowest CRET efficiency (2.7%) was observed in the QD-HRP conjugates case. The fluorescence of QD can be observed in the three cases, indicating that the CRET occurs while QD acceptor in different status was used. The resonance energy transfer efficiencies were compared while the oil soluble QDs, water soluble QDs (modified with thioglycolate) and QD-HRP conjugates were used as acceptor. The resonance energy transfer between chemiluminescence donor (luminol-H2O2 system) and quantum dots (QDs, emission at 593 nm) acceptors (CRET) was investigated. Wang, Hai-Qiao Li, Yong-Qiang Wang, Jian-Hao Xu, Qiao Li, Xiu-Qing Zhao, Yuan-Di
Influence of quantum dot's quantum yield to chemiluminescent resonance energy transfer. Values for the primary quantum yields of NO2 photodecomposition as a function of wavelength are presented. (1964) that the energy deficiency for photodissociation of NO2 excited at wavelengths greater than 397.9 nm is due to the rotational and vibrational energy of the NO2 molecules is confirmed by the data. It is observed that the primary quantum efficiencies increase rapidly from near zero at 424 nm to near unity for excitation at wavelengths less than 394 nm. The temperature and wavelength dependences of the primary quantum efficiencies are examined. The quantum yields of formation of NO, O2, and NO2 loss are measured for NO2 vapor at low pressures (0.13-0.30 torr) irradiated at 334-405 nm wavelengths and temperature in the range 273-370 K in order to study the primary quantum efficiencies of NO2 photodecomposition. Primary quantum yields of NO2 photodissociation
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