Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Rapid Communication in Photoscience
Journal Basic Information
Journal DOI :
Korean Society of Photoscience
Editor in Chief :
Yong Rok Kim
Volume & Issues
Volume 2, Issue 3 - Sep 2013
Volume 2, Issue 2 - Jun 2013
Volume 2, Issue 1 - Mar 2013
Selecting the target year
Synthesis of Porphyrin-Viologen-Anthracene Triad for Construction of Photoactive Pseudorotaxane with Bis(p-phenylene)crownether
Shin, Eun Ju ;
Rapid Communication in Photoscience, volume 2, issue 2, 2013, Pages 39~41
DOI : 10.5857/RCP.2013.2.2.39
It is interesting to introduce viologen moiety into photoactive compounds such as porphyrin and anthracene in the study of supramolecular system such as pseudorotaxanes. For the construction of photoactive pseudorotaxane based on porphyrin-viologen-anthracene triad or its zinc derivative threaded with bis-p-phenylene-34-crown-10 macrocycle, porphyrin-viologen-anthracene triad 1 and its zinc derivative zinc porphyrin-viologen-anthracene triad 2 were prepared and their absorption and fluorescence spectral properties were measured.
Photocatalytic Systems of Pt Nanoparticles and Molecular Co Complexes for NADH Regeneration and Enzyme-coupled CO
Kim, Ellen ; Jeon, Minkyung ; Kim, Soojin ; Yadav, Paras Nath ; Jeong, Kwang-Duk ; Kim, Jinheung ;
Rapid Communication in Photoscience, volume 2, issue 2, 2013, Pages 42~45
DOI : 10.5857/RCP.2013.2.2.42
Natural photosynthesis utilizes solar energy to convert carbon dioxide and water to energy-rich carbohydrates. Substantial use of sunlight to meet world energy demands requires energy storage in useful fuels via chemical bonds because sunlight is intermittent. Artificial photosynthesis research focuses the fundamental natural process to design solar energy conversion systems. Nicotinamide adenine dinucleotide (
are ubiquitous as electron transporters in biological systems. Enzymatic, chemical, and electrochemical methods have been reported for NADH regeneration. As photochemical systems, visible light-driven catalytic activity of NADH regeneration was carried out using platinum nanoparticles, molecular rhodium and cobalt complexes in the presence of triethanolamine as a sacrificial electron donor. Pt nanoparticles showed photochemical NADH regeneration activity without additional visible light collector molecules, demonstrating that both photoactivating and catalytic activities exist together in Pt nanoparticles. The NADH regeneration of the Pt nanoparticle system was not interfered with the reduction of
. Molecular cobalt complexes containing dimethylglyoxime ligands also transfer their hydrides to
with photoactivation of eosin Y in the presence of TEOA. In this photocatalytic reaction, the
reduction process competed with a proton reduction.
Fiber-Optic Sensor Simultaneously Detecting Localized Surface Plasmon Resonance and Surface-Enhanced Raman Scattering
Norov, Erdene ; Jeong, Hyeon-Ho ; Park, Jae-Hyoung ; Lee, Seung-Ki ; Jeong, Dae Hong ;
Rapid Communication in Photoscience, volume 2, issue 2, 2013, Pages 46~51
DOI : 10.5857/RCP.2013.2.2.46
This study reports a fiber-optic sensor detecting biomolecule by simultaneously monitoring localized surface plasmon resonance (LSPR) from gold nanoparticles (Au NPs) of ca.
nm attached on one end of optical fiber and surface enhanced Raman scattering (SERS) of the reporter molecules adsorbed on the gold surfaces as an additional sensing tool. The sensor was fabricated by immobilizing Au NPs on one end of an optical fiber by chemical reaction. LSPR and SERS signals of the sensor were measured using various refractive indices solutions. Finally, the sensor was applied to observe real-time LSPR sensor-gram and SERS spectra of the reporter molecule of 4-aminothiphenol during the antibody-antigen reaction of interferon-gamma (IFN-
) as a proof-concept experiment of biological applications.
Photochemical properties of a Rhodopsin for Light Energy Conversion obtained from Yellow Sea in Korea
Kim, So Young ; Jung, Kwang-Hwan ;
Rapid Communication in Photoscience, volume 2, issue 2, 2013, Pages 52~55
DOI : 10.5857/RCP.2013.2.2.52
Proteorhodopsin (PR) is a photoinduced proton pump found abundantly in ocean and fresh water habitat, and has an important role in photoenergy conversion to bioenergy in the living cells. Numerous sequences that encode PR protein variants were discovered by environmental genome sequencing and they indicated the high sequence similarity. A new-type of PR (YS-PR) which had been discovered from the surface of Yellow Sea was found to have only 5 amino acid differences from the previously known green-light absorbing PR (GPR) protein, but showed different photochemical properties. This YS-PR showed a 10 nm red-shifted absorption maximum, when compared with GPR. It also showed slower photocycling rate than GPR. However, the photoconversion rate of YS-PR was fast enough to pump protons. Four different amino acids out of 5 were similar to Blue-light absorbing PR (BPR), suggesting that those residues might be responsible for the observed spectral and photoconverting properties.
The Protein Kinase Activity of Phytochrome Functions in Regulating Plant Light Signaling
Shin, Ah-Young ; Han, Yun-Jeong ; Song, Pill-Soon ; Kim, Jeong-Il ;
Rapid Communication in Photoscience, volume 2, issue 2, 2013, Pages 56~59
DOI : 10.5857/RCP.2013.2.2.56
Plant phytochromes, molecular light switches that regulate various aspects of plant growth and development, are known as autophosphorylating serine/threonine kinases. Although recent studies reveal that phytochrome autophosphorylation plays an important role in the regulation of phytochrome signaling through the control of phyA protein stability, the in vivo functional roles of phytochrome kinase activity in plant light signaling are largely unknown. Thus, it is necessary to investigate the detailed function of phytochrome as a protein kinase, which might include mapping of kinase domain on the phytochrome molecule, searching for substrates that could be phosphorylated by phyA, and in vivo functional analysis of the kinase activity with phytochrome mutants displaying reduced kinase activity. Our recent studies reveal that the kinase activity of phytochrome plays a positive role in plant light signaling. Therefore, we highlight the current knowledge about the functional roles of phytochrome kinase activity in the light signal transduction of plants, based on our recent results.
Characterization of a Xanthorhodopsin-homologue from the North Pole
Kim, Se Hwan ; Cho, Jang-Cheon ; Jung, Kwang-Hwan ;
Rapid Communication in Photoscience, volume 2, issue 2, 2013, Pages 60~63
DOI : 10.5857/RCP.2013.2.2.60
Rhodopsins belong to a family of membrane-embedded photoactive retinylidene proteins. One opsin gene was isolated from
-proteobacterium (IMCC9480) which had been collected at the North Pole. It is very similar to Xanthorhodopin (XR) of HTCC2181. In this study, we carried out basic characterization of the rhodopsin. It has
of 536, 554, and 546 nm at pH 4.0, 7.0, and 10.0, respectively. Since the pKa of its proton acceptor is around 6.27, we measured its proton pumping activity and photocycling rate at pH 8.0. It has a typical proton acceptor (D99) and donor (E110) which mediate proton translocation from intracellular to extracellular region when deduced from the sequence alignments. On the basis of in vitro proton pumping activity, it was proposed to have fast photocycling rate with M and O intermediates, indicating that it is a typical ion-pumping rhodopsin. Since the XR has not yet been expressed in any other heterologous expression system, we tried to get much more information about the XR through the XR-homologue rhodopsin.
Photocatalytic conversion of CO
into hydrocarbon fuels with standard titania (Degussa P25) using newly installed experimental setup
Kim, Hye Rim ; Razzaq, Abdul ; Heo, Hyo Jung ; In, Su-Il ;
Rapid Communication in Photoscience, volume 2, issue 2, 2013, Pages 64~66
DOI : 10.5857/RCP.2013.2.2.64
into hydrocarbon fuels on the surface of photocatalyst is one of the breakthroughs in the field of photocatalysis. At present various approaches have been investigated with the aim of increasing the
conversion efficiency. The reactor for photoconversion of
plays a vital role in experimental setup. In this work an attempt was made to testify a newly designed the photoreactor for conversion of
into useful products. The photoreactor was specifically designed for simple operation bearing features of temperature and pressure control. The reactor has been tested successively with the standard titania, Degussa P25 yielding methane with moderate production rate of 30.8
under UV lamp with 365 nm wavelength. The methane yield obtained is comparable to the values reported in literature. Thus we anticipate that this experimental setup equipped with newly designed photoreactor can yield competitive amounts of fuels from
photoredcution via 365 nm UV light illumination on various photocatalysts.