Self-Assembly of Amphiphilic Conjugated Diblock Copolymers into One-Dimensional Nanoribbons

Kamps, Amanda C.,Cativo, Ma. Helen M.,Fryd, Michael,Park, So-Jung American Chemical Society 2014 Macromolecules Vol.47 No.1

<P>The colloidal self-assembly of a new conjugated diblock copolymer of a polythiophene derivative, poly[3-(2,5,8,11-tetraoxatridecanyl)thiophene]-<I>block</I>-poly(ethylene glycol) (PTOTT-<I>b</I>-PEG), led to various well-defined assembly structures such as vesicles, sheets, and nanoribbons. A unique and technologically relevant nanoribbon structure with a dimension reaching tens of micrometers was formed in water when polar protic solvents were used as initial cosolvents. Self-assembly of PTOTT-<I>b</I>-PEG in various solvent compositions and polymer concentrations indicated that the hydrogen bonding between the diblock copolymer and the self-assembly medium plays an important role in determining the self-assembly structure and that the final assembly structure should be the result of a delicate interplay between hydrogen bonding and π–π interactions. This study demonstrates that the addition of hydrogen bonding capability and amphiphilicity in the self-assembly of conjugated polymers can lead to many interesting well-defined assembly structures that are not typically found in conjugated polymers.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/mamobx/2014/mamobx.2014.47.issue-1/ma4021483/production/images/medium/ma-2013-021483_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ma4021483'>ACS Electronic Supporting Info</A></P>

Self-Assembly of DNA-Coupled Semiconducting Block Copolymers

Kamps, Amanda C.,Cativo, Ma. Helen M.,Chen, Xi-Jun,Park, So-Jung American Chemical Society 2014 Macromolecules Vol.47 No.11

<P>We describe the synthesis and self-assembly of amphiphilic semiconducting polymers composed of a polythiophene derivative (i.e., poly[3-(2,5,8,11-tetraoxatridecanyl)thiophene] (PTOTT)) and an oligonucleotide, DNA-<I>b</I>-PTOTT. These new bioconjugated polymers combine the excellent optoelectronic properties of semiconducting polymers and the programmable molecular recognition properties of DNA. Because of the unique combination of rigid polythiophene and highly negatively charged DNA, they self-assemble into size-controllable vesicles in water. DNA-modified one-dimensional polythiophene nanoribbons were formed by simultaneous assembly of DNA-<I>b</I>-PTOTT with PEG-<I>b</I>-PTOTT, demonstrating that various types of DNA-modified functional nanostructures can be formed by the mixed assembly. This approach offers a new pathway to couple various types of soft optoelectronic nanostructures with DNA’s molecular recognition properties.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/mamobx/2014/mamobx.2014.47.issue-11/ma500509u/production/images/medium/ma-2014-00509u_0002.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ma500509u'>ACS Electronic Supporting Info</A></P>

Uzbek Migrants in Türkiye: Gender, Satisfaction in Türkiye, and Return Intentions

Marianne Kamp,Shoirakhon Nurdinova 한국외국어대학교(글로벌캠퍼스) 러시아연구소 2022 REGION Vol.11 No.2

This study examines the life satisfaction of migrants from Uzbekistan who have individually chosen Türkiye as a migration destination. Within the significant migration flows from post-Soviet countries to Türkiye, female migrants, including migrants from Uzbekistan, outnumber male migrants at least two to one. This gendered influx into Türkiye is puzzling: studies on labor migration from Central Asia overall show that male migrants outnumber females by orders of magnitude, which is explained by normative attitudes that women should stay at home. This article contributes to understandings of gendered migration flows through attention to women migrants' explanations of their satisfaction with employment in Türkiye in relation to their migration goals.

Recent advances in nanophotonics―From physics to devices

Martin Kamp,Johann?Peter Reithmaier,Alfred Forchel,Stephan Reitzenstein 한국물리학회 2006 Current Applied Physics Vol.6 No.1l

Due to the need to realize highly functional low cost photonic devices, nanophotonic approaches have become a major area of photonics research during the last few years. Using photonic crystals we have realized miniaturized tunable single mode lasers as well as dispersion compensation elements for the 1.5 lm wavelength range. High quality single mode GaAs based quantum dot lasers for the 1.3 lm wavelength range have been realized using lateral metal grating structures for distributed feedback. High power quantum dot lasers at 915 nm are presented which combine high output powers with a very good temperature stability displaying the potential of an uncooled operation of the devices.

Recreating Histories: Transdisciplinarity and Transcultural Perspectives on Performance Making

( Thomas Kampe ) 대한무용학회 2011 대한무용학회논문집 Vol.67 No.-

This article discussed potentials and resonances of the application of the Feldenkrais Method, a somatic movement education practice, within the context of the performance making. Questions regarding transdisciplinarity arise through the application of such methodology within a collaborative creative process, where dance-, theatre-, and educational discourses are critically applied through lived, embodied practice.

석탄과 제지슬러지 혼소에 따른 연소특성에 관한 연구

이갑두 ( Kamp Du Lee ),유태욱 ( Tae Uk Ryu ),박상원 ( Sang Won Park ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.3

Efforts were made to determine the activation energy and the reaction order by adopting Kissinger and Flynn Wall Ozawa Analysis methods. All the data were acquired from TGA the mixed fuels with different temperature heating Rates. It could be known that both the coal and the mixed fuels decomposed thermally at temperature ranges of 300 700℃. The temperature at the maximum reaction rate, Tp, could be determined by DTG method which could be obtained by Differentiation of TGA thermogram. Kissinger analysis showed the linear relationship with experimental data, showing the activation energy of 319.64 ±4kJ/mol. From Flynn Wall Ozawa analysis, it was shown that the activation energies and the reaction orders did not undergo any significant changes with both the conversions and the heating rates, It was considered from this facts that the combustion mechanism of the mixed fuels could not be affected by the exent of conversion and heating rate. In the present study, the activation energies showed different values according to different analysis methods. The difference might be originated from the inconsistency of the mathematical data treatment method. In other words, while the activation energies obtained from the Kissinger method indicated the average values for overall reaction, that from Flynn-Wall-Ozawa method showed the average values for the each conversion around Tp.

N2O 분해를 위한 전이금속이 도핑된 메조포러스 실리카 촉매의 합성과 표면 특성에 관한 연구

이갑두 ( Kamp Du Lee ),노민수 ( Min Soo Noh ),박상원 ( Sang Won Park ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

The purpose of this study is to synthesize transition metal doped mesoporous silica catalyst and to characterize its surface in an attempt to decomposition of N2O. Transition metal used to surface modification were Ru, Pd, Cu and Fe concentration was adjusted to 0.05 M, The prepared mesoporous silica catalysts were characterized by X-ray diffraction, BET surface area, BJH pore size, Scanning Electron Microscopy and X-ray fluorescence. The results of XRD for mesoporous silica catalysts showed typical the hexagonal pore system. BET results showed the mesoporous silica catalysts to have a surface area of 537 ~973 m2/g and pore size of 2∼4 nm. The well-dispersed particle of mesoporous silica catalysts were observed by SEM, the presence and quantity of transition metal loading to mesoporous surface were detected by XRF. The N2O decomposition efficiency on mesoporous silica catalysts were as follow: Ru>Pd>Cu>Fe. The results suggest that transition metal doped mesoporous silica is effective catalyst for decomposition of N2O.

Moving after Auschwitz: The Feldenkrais Method® as a soma-critique

Thomas Kampe 무용역사기록학회 2014 무용역사기록학 Vol.33 No.-

This article sets out to position The Feldenkrais Method (FM), a key 20th Century practice of somatic movement education, as a critical practice. Drawing on Feldenkrais–informed choreographic research, on writings by Moshe Feldenkrais (1904-1984), the author argues that the Feldenkrais Method uses choreographic means to empower the participant to question habitual behaviour. The article suggests that Feldenkrais offers the learner tools for self-reflection, empathy and embodied criticality through inter-subjective de-conditioning processes, forming a praxis that echoes ethical positions formulated in Theodore Adorno’s seminal essay ‘Education after Auschwitz’ (1966). The article discusses how modes of facilitation of such processes of de-patterning and re-patterning inherent in The Feldenkrais Method, with a focus on the use of disorientation, de-familiarisation strategies, and de-centralised body-coding can form a practice of embodied questioning. The author discusses the application of non-corrective Feldenkrais-informed performance pedagogies within Higher education contexts as means to provide conditions for inquiry, un-knowing, and embodied self-examination.

Do Labour Market Reforms Achieve a Double Dividend under EMU? Discretionary versus Rule-based Monetary Policy Revisited

Belke, Ansgar,Kamp, Martina 세종대학교 국제경제연구소 1999 Journal of Economic Integration Vol.14 No.4

High equilibrium unemployment and the inflation bias in some EU countries require fundamental reforms of labour-market institutions. Impacts of different monetary regimes inside and outside EMU on the incentives for labour-market reforms are examined in a Barro-Gordon framework from the perspective of a single country. Monetary policy (discretionary versus rule-based) and the degree of labour-market reforms are determined simultaneously. It can be shown that discretionary policy outside EMU leads to a higher degree of reforms than rule-based policy since in the former case reforms reduce both unemployment and the inflation bias. However, rule-based monetary policy inside EMU limits the benefits of reforms to a positive impact on employment. Nevertheless, total economy welfare under EMU is superior to the one under discretionary policy. Insofar as a superior instrument is available for the parallel reduction of the equilibrium inflation rate, namely a strict monetary policy rule, the higher degree of labour-market reforms under discretionary monetary policy outside EMU only signals a kind of an overshooting. (JEL Classificaions : E52, E61, J38)

Do Labour Market Reforms Achieve a Double Dividend under EMU? Discretionary versus Rule-based Monetary Policy Revisited

( Ansgar Belke ),( Martina Kamp ) 세종대학교 경제통합연구소 (구 세종대학교 국제경제연구소) 1999 Journal of Economic Integration Vol.14 No.4

High equilibrium unemployment and the inflation bias in some EU countries require fundamental reforms of labour-market institutions. Impacts of different monetary regimes inside and outside EMU on the incentives for labour- market reforms are examined in a Barro- Gordon framework from the perspective of a single country. Monetary policy (discretionary versus rule-based) and the degree of labour-market reforms are determined simultaneously. It can be shown that discretionary policy outside EMU leads to a higher degree of reforms than rulebased policy since in the former case reforms reduce both unemployment and the inflation bias. However, rule-based monetary policy inside EMU limits the benefits of reforms to a positive impact on employment. Nevertheless, total economy welfare under EMU is superior to the one under discretionary policy. Insofar as a superior instrument is available for the parallel reduction of the equilibrium inflation rate, namely a strict monetary policy rule, the higher degree of labourmarket reforms under discretionary monetary policy outside EMU only signals a kind of an overshooting. (JEL Classifications: E52, E61, J38)