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Orthogonal carbazole-perylene bisimide pentad:a photoconversion-tunable photosensitizer with diversified excitation and excited-state relaxation pathways

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Science China Chemistry 2021年第12期64卷 2193-2202页

作者： Zhaolong Wang Yue Sun Simin Lin Gang Wang Xingmao Chang Xinyu Gou taihong Liu Shengye Jin Gang He Yu-Chen Wei pi-tai chou Yu Fang Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education School of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an710119China College of Life Sciences Shaanxi Normal UniversityXi’an710119China State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials(iChEM) Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China Frontier Institute of Science and Technology Xi’an Jiaotong UniversityXi’an710054China Department of Chemistry Taiwan UniversityTaipei10617China

Integrating multiple photosensitive properties into an“all-in-one”photosensitizer(PS)shows great promise for the treatment of cancers owing to synergistic effect among ***,the development of such PSs,especially those that need a single laser source,remains a ***,we report an orchestration of electron donors and acceptors in a propeller-like pentad,PBI-4Cz,where four carbazole(Cz)units are covalently linked to the ortho-positions of the perylene bisimide(PBI)*** intramolecular donor-acceptor interaction significantly quenches the luminescence and largely extends the absorption spectra to near-infrared ***-state dynamics investigated via femto-and nano-second transient absorption spectroscopy revealed exclusive charge separation of the PBI-4Cz within initial 0.5 ps when photoexcited regardless of which intermediate is *** dissipation of the resulting charge-separated state(PBI^(•−)-4Cz^(•−))is subjected to the toggle between intersystem-crossing toward excited triplet states and charge recombination toward ground *** importance of the two pathways can be tuned by micro-environmental polarity,which endows PBI-4Cz remarkable performances of singlet-oxygen generation(>90.0%)in toluene and photothermal conversion(∼28.6%)in *** intrinsic photostability and excited-state processes of heavy-atom-free PBI derivatives not only holds a promise for multifunctional phototheranostics,but also provides a prototype for designing high-performance PSs with tunable photoconversion pathways.

关键词： charge recombination charge separation perylene bisimide derivatives photosensitizers singlet oxygen generation

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Bi-ortho-Carborane Unit-Riveted Perylene Monoimides:Structure-Tuned Optical Switches for Electron Transfer and Robust Thin Film-Based Fluorescence Sensors

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CCS Chemistry 2023年第12期5卷 2922-2932页

作者： Nannan Ding Yu-Chan Liao Gang Wang Kai-Hsin Chang Zhaolong Wang Ke Liu Jiani Ma pi-tai chou Yu Fang Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education School of Chemistry and Chemical EngineeringShaanxi Normal UniversityShaanxiXi’an 710019 Department of Chemistry Taiwan UniversityTaipei 10617China

Innovative design of sensing fluorophores possessing superior photophysical properties,porosity,and packing-resistance structures is pivotal for high performance film-based fluorescent ***,PDCB,a perylene monoimide(PMI)derivative incorporating large spatial phenyl-carborane was synthesized and found to exhibit unexpected photophysical *** structurally bent PDCB exhibits not only PMI-like emission but also a red-shifted *** sharp contrast,PMI-CBH,a linear PMI derivative,exhibits only PMI-like ***,upon local excitation,PDCB undergoes a photoinduced electron transfer(PET)between PMI and phenylcarborane,resulting in a charge-transfer *** other PMI derivatives,PCB and PDCBP,showed a similar *** PET rate is in the order of PCB(48 ps^(-1))>PDCB(163 ps^(-1))>PDCBP(815 ps^(-1))in toluene,which decreases with increasing steric hindrance,inferring structure reorganization prior to the PET *** expected,a fabricated PDCB-based sensor showed excellent performance in acetone sensing.

关键词： perylene monoimide o-carborane excited-state charge transfer fluorescent film sensors acetone

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Investigation of kinetics in bioaugmentation of crude oil via high-throughput sequencing: Enzymatic activities, bacterial community composition and functions

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Petroleum Science 2022年第4期19卷 1905-1914页

作者： Yong-Rui pi Mu-tai Bao School of Ocean Yantai UniversityYantai264005China Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education/Institute for Advanced Ocean StudyOcean University of China Qingdao266100China

The enzymes and the characteristics of the community of the petroleum-degrading bacteria play a crucial role in the crude oil biodegradation. The prediction of kinetics of the key groups of hydrocarbons in crude oil was important to evaluate the bioremediation speed and constant. Most of the n-alkanes(C9-C29) were degraded in 25 days, and the average degradation rates of C_(18)~C_(27) higher than 100 μg g^(-1) d^(-1).The hopanes, such as H_(30), had a biodegradation rate more than 10 μg g^(-1) d^(-1). The related enzymes activities changed along with the crude oil biodegradation, especially dehydrogenase. The 16 S rRNA gene amplicon sequencing revealed that Proteobacteria, Firmcutes, Bacteroidetes, Actinobacteria, Acidobacteria were the main petroleum hydrocarbon degraders during the crude oil biodegradation, and the top two highest relative abundance of the genera were Alcaligenes and Acinetobacter. Acinetobacter presented positive correlation to biodegradation of n-alkanes and PAHs. Based on COG analysis, the largest group involved in the general function was amino acid transport and metabolism. The functional categories of bacterial communities were mainly focused on the carbohydrate and amino acid metabolism, xenobiotics biodegradation and metabolism, membrane transport, and so on. Overall, these findings highlight the potential guideline for more adequate monitoring of microbial degradation of crude oil.

关键词： Crude oil Bioaugmentation Kinetics Enzyme activities Microbial functions

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Matched glass-to-Kovar seals in N_2 and Ar atmospheres

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International Journal of Minerals,Metallurgy and Materials 2013年第9期20卷 874-882页

作者： Cheng-hsien Kuo pi-ying Cheng Chang-pin chou Department of Mechanical Engineering Chiao Tung University

The oxidation of Kovar alloy was investigated, the wetting and spreading behavior of hard and soft glasses on Kovar alloy were studed by using the sessile drop method, and the quality and the seal strength of glass-Kovar seals were tested. The experimental results indicated that the preoxidation of Kovar alloy for approximately 10 min at 700℃ in air resulted in excellent adherence in glass-Kovar seals. The wetting and spreading behavior of glass on preoxidized Kovar alloy were superior to that on nonoxidized Kovar alloy. The wetting ability of ASF110 glass, at 950℃ and 980℃ in Ar and N2 atmospheres, was significantly superior to that of ASF200R and ASF700 glasses. The seal quality of the glass-preoxidized Kovar seal was superior to that of the glass-nonoxidized Kovar seal. The shear strength of the ASFll0 glass-preoxidized Kovar seal, which was prepared at 980℃ for 20 min in an Ar atmosphere, was approximately 3.9 MPa.

关键词： Kovar alloy glass sealing argon nitrogen oxidation wetting

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Study on the Multi-Sensing System Based on the Tin Oxide pH Electrode

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稀有金属材料与工程 2006年第A03期35卷 221-224页

作者： Gin-chou Yang Jung-Chuan chou tai-ping Sun Shen-Kan Hsiung Institute of Electronic Engineering Chung Yuan Christian University Chung-Li Taiwan 320 China Graduate School of Electronic Engineering National Yunlin University of Science and Technology Douliou Taiwan 640 China Department of Electrical Engineering National Chi Nan University Nantou Taiwan 545 China

In this study,the multi-sensing system based on the tin oxide pH electrode for the ion-determination was presented. With the advantages of the real-time supervisory control apparatus,the measured values could be displayed on the liquid crystal display (LCD) *** this study,the basic sensor was the tin oxide pH electrode,which was fabricated by radio frequency (r.f.) sputtering system on the indium tin oxide (ITO)/glass ***,the major blocks of the system consist of the tin oxide electrode-based ion selective electrodes (ISEs),an analog front-ended readout circuit,a microcontroller with built-in analog to digital (A/D) *** addition,by the embedded system design,the measurement results can be transmitted to a portable system or computer through the Universal Serial Bus (USB) and Universal Asynchronous Receiver Transmitter (UART) interface *** to the experimental results,the multi-sensing system has high performance and reliability for pH,K^+,and Na^+ detection.

关键词： multi-sensing system tin oxide pH electrode liquid crystal display(LCD) tin oxide electrode-based ion selective electrodes(ISEs) universal serial bus(USB) universal asynchronous receiver transmitter(UART)

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Potentiometric Urea Biosensor Based on Ion-Selective Electrode by Different Immobilization Procedures

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稀有金属材料与工程 2006年第A03期35卷 309-312页

作者： Nien-Hsuan chou Jung-Chuan chou tai-ping Sun Shen-Kan Hsiung Institute of Electronic Engineering Chung Yuan Christian University Chung-Li Taiwan 320 China Graduate School of Electronic Engineering National Yunlin University of Science and Technology Douliou Taiwan 640 China Department of Electrical Engineering National Chi Nan University Nantou Taiwan 545 China

Enzyme was immobilized on an ammonium ion-selective electrode by different *** ion-selective electrode is not completely ion-specific,and interfering ions react with the ion-selective electrode membrane,altering the measured ***,the characteristics of the effect of other ions on ammonium ion-selective electrode-based urea biosensors are *** on the experimental results,the urea biosensor based on entrapment had a high response voltage of around 189 mV and fast response time of around 16 ***,selectivity of the urea biosensor in different interfering ions was considered to elucidate the characteristics of ammonium ion-selective electrode-based biosensors.

关键词： enzyme immobilization ammonium ion-selective electrode interfering ions urea biosensors selectivity

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Real-time prediction of the peak suspended sediment concentration and sediment yield of the Lao-Nung River during storms

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International Journal of Sediment Research 2011年第2期26卷 163-180页

作者： pi-Chih HSU Ching-Nuo CHEN Chang-tai TASI Department of Constructing Engineering Nan Jeon Institute of Technologyand Ph.D.CandidateDepartment of Hydraulic and Ocean EngineeringNational Cheng-Kung University Department of Hydraulic and Ocean Engineering National Cheng-Kung University

Based on rainfall erosion of soil and suspended sediment transport in storm events,a method is proposed to predict peak suspended sediment concentration and suspended sediment yield in watersheds based on rainfall characteristics prior to peak rainfall *** rainfall characteristics factors that dominate peak suspended sediment concentration Cpare rainfall erosion factor Ref, first peak rainfall intensity of area-average rainfall ip1and antecedent precipitation index Iap;the rainfall characteristics factors that dominate suspended sediment yield Yssin storm events are total rainfall P,suspended sediment yield factor Rsfand antecedent precipitation index *** research focuses on watersheds in Liau-Kwei observation station along Lao-Nung River in southern taiwan as the research object,and adopts the PSED-model to simulate the discharge hydrograph, suspended sediment concentration hydrograph and suspended sediment yield in 11 storm events for *** analytical results show that there is a good correlation between the above-mentioned rainfall characteristics factors and CPas well as Yss,thus enabling Cpand Yssto be predicted by using Expressions(13) and(14).These two expressions are utilized to predict CPand Yssof Typhoon Morakot in 2009,and the results are compared with those from simulation by using the *** result of comparison shows there is a good capability in *** the watersheds where it is necessary to predict CPand Yssof a storm event for the benefit of effective operation of water resource facilities,the aforesaid rainfall characteristics factors can be utilized to establish applicable models for prediction.

关键词： Lao-Nung River Sediment Peak suspended sediment concentration PSED Morakot

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The Humidity Sensor Using the Polyacrylic Emulsion Containing Magnesium Chloride

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稀有金属材料与工程 2006年第A03期35卷 369-371页

作者： Ching-Han Yu Jung-Chuan chou tai-ping Sun Shen-Kan Hsiung Institute of Electronic Engineering Chung Yuan Christian University Chung-Li Taiwan 320 China Graduate School of Electronic Engineering National Yunlin University of Science and Technology Douliou Taiwan 640 China Department of Electrical Engineering National Chi Nan University Nantou Taiwan 545 China

An impedance type humidity sensor based on the polyacrylic emulsion containing magnesium chloride (MgCl_2) without chemical modification was *** impedances of the sensor were measured from various relative humidity in the frequency range between 0.1kHz and 100 *** sensor has a good sensitivity from 60%RH to 90%*** to the experimental results,the response time is about 240 seconds in the adsorption process and 310 seconds in the desorption process.

关键词： humidity sensor polyacrylic emulsion relative humidity desorption magnesium chloride

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Study on the Tin Oxide Sol-Gel Membrane as a pH Sensing Electrode

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稀有金属材料与工程 2006年第A03期35卷 238-239页

作者： Chin-Shuen Hung Jung-Chuan chou tai-ping Sun Shen-Kan Hsiung Institute of Electronic Engineering Chung Yuan Christian University Chung-Li Taiwan 320China Graduate School of Electronic Engineering National Yunlin University of Science and Technology Douliou Taiwan 640China Department of Electrical Engineering National Chi Nan University Nantou Taiwan 545 China

In this study,tin oxide sensing membrane was derived by sol-gel method and was coated onto indium tin oxide (ITO) glass substrate by spin-coating technique to fabricate a pH sensing ***,the morphology of the tin oxide membrane has been discussed through the instrumental ***,the sensing characteristics of the pH electrode was measured by commercial instrumental amplifier as the readout *** to the sol-gel method has many advantages such as easy fabrication of gel solution,ability to dope other materials without any expensive fabricating ***,it is suitable for the mass production of a disposable sensor.

关键词： tin oxide sensing membrane sol-gel method spin-coating technology pH sensing electrode

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Study on the Blood Gas Sensor Based on Optical Absorption Technology

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稀有金属材料与工程 2006年第A03期35卷 213-216页

作者： Chih-Wei Lai Jung-Chuan chou tai-ping Sun Shen-Kan Hsiung Institute of Electronic Engineering Chung Yuan Christian University Chung-Li Taiwan 320 China Graduate School of Electronic Engineering National Yunlin University of Science and Technology Douliou Taiwan 640 China Department of Electrical Engineering National Chi Nan University Nantou Taiwan 545 China

Continuous intra-arterial blood gas monitoring is used clinically in hospital and intensive care unit *** blood gas can be detected by the colormetric indicators which are sealed in the silicone *** glass tubing of the sensor should be as thin as possible since it affects response time and the bicarbonate buffer shifts the sensitivity of the sensor. In this paper,the sensitivity shifts by the bicarbonate buffer was *** carbon dioxide diffuses into the indicator, the carbon acid is produced and the bicarbonate buffer is used to control internal *** the sensitivity of the pCO_2 sensor is increased by controlling the concentration of the bicarbonate buffer,the bicarbonate buffer is used to obtain the optimum resolution in this ***,the different concentrations of the bicarbonate buffer for blood gas measurements are discussed in detail.

关键词： silicone membrane colorimetric indicators bicarbonate buffer blood gas

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