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Kessler, Daniel,Jochum, Florian D.,Choi, Jiyeon,Char, Kookheon,Theato, Patrick American Chemical Society 2011 ACS APPLIED MATERIALS & INTERFACES Vol.3 No.2
<P>Reactive surface coatings were used as an ideal precursor coating for the fabrication of three different photoswitchable surface coatings in parallel. Different light-responsive moieties, such as azobenzene, salicylideneaniline, and spiropyran, were immobilized on glass, polycarbonate, and steel surfaces. Independent from the underlying substrate, wettability could be switched reversibly by UV irradiation. The maximum switching range was obtained after functionalization of the reactive coating with spiropyran, resulting in a contact angle difference between the two isomeric states of almost 30°.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2011/aamick.2011.3.issue-2/am1010892/production/images/medium/am-2010-010892_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am1010892'>ACS Electronic Supporting Info</A></P>
Kessler, Daniel,Lechmann, Maria C.,Noh, Seunguk,Berger, Rü,diger,Lee, Changhee,Gutmann, Jochen S.,Theato, Patrick WILEY-VCH Verlag 2009 Macromolecular rapid communications Vol.30 No.14
<P>Optoelectronic devices usually consist of a transparent conductive oxide (TCO) as one electrode. Interfacial engineering between the TCO electrode and the overlying organic layers is an important method for tuning device performance. We introduce poly(methylsilsesquioxane)–poly(N,N-di-4-methylphenylamino styrene) (PMSSQ–PTPA) as a potential hole-injection layer forming material. Spin-coating and thermally induced crosslinking resulted in an effective planarization of the anode interface. HOMO level (−5.6 eV) and hole mobility (1 × 10<SUP>−6</SUP> cm<SUP>2</SUP> · Vs<SUP>−1</SUP>) of the film on ITO substrates were measured by cyclovoltammetry and time-of-flight measurement demonstrating the hole injection capability of the layer. Adhesion and stability for further multilayer built-up could be demonstrated. Contact angle measurements and tape tests after several solvent treatments proved the outstanding film stability.</P><P> <img src='wiley_img/10221336-2009-30-14-MARC200900196-gra001.gif' alt='wiley_img/10221336-2009-30-14-MARC200900196-gra001'> </P> <B>Graphic Abstract</B> <P>Poly(methylsilsesquioxane)–poly(N,N-di-4-methylphenylamino styrene) (PMSSQ–PTPA) as potential hole-injection layer (HIL) forming material was used for effective planarization of the anode interface. The obtained HIL showed high stability and adhesion even after several solvent treatments. <img src='wiley_img/10221336-2009-30-14-MARC200900196-content.gif' alt='wiley_img/10221336-2009-30-14-MARC200900196-content'> </P>
Evaluation of Urinary Sphincter Function by Rapid Magnetic Resonance Diffusion Tensor Imaging
Florian A. Schmid,Ryszard S. Gomolka,Andreas M. Hötker,Andreas Boss,Thomas M. Kessler,Cristina Rossi,Daniel Eberli 대한배뇨장애요실금학회 2020 International Neurourology Journal Vol.24 No.4
Purpose: This study aimed to assess the feasibility of a rapid diffusion tensor imaging (DTI) for evaluation of the female urinary sphincter function based on differentiation between rest and muscle contraction. Methods: Magnetic resonance imaging (MRI) of the lower pelvis was performed at 3 Tesla in 10 healthy female volunteers (21–36 years; body mass index, 20.8±3.6 kg/m2 ) between June and July 2019. High-resolution T1- and T2-weighted images were acquired for anatomical reference, and following DTI performed in 4 experiment phases: twice during rest (denoted rest- 1, rest-2) and contraction (contraction-1, contraction-2). Manual segmentation of the urinary sphincter and the levator ani muscles were performed by 2 independent readers. Mean diffusivity (MD) and fractional anisotropy (FA) values derived from DTI volumes were compared in search for significant differences between the experiment phases. Interreader agreement was assessed by intraclass correlation coefficient (ICC). Results: Kruskal-Wallis test showed significant differences between MD values among all the experiment phases, by both independent readers (1st: X2 [3,76]=17.16, P<0.001 and 2nd: X2 [3,76]=15.88, P<0.01). Post hoc analysis revealed differences in MD values by both readers between: rest-1 vs. contraction-1 (least P<0.05), rest-1 vs. contraction-2 (P<0.01), rest-2 vs. contraction-1 (P<0.03), rest-2 vs. contraction-2 (P=0.02) with overall mean ‘rest’ to ‘contraction’ ΔMD=20.6%. No MD or FA differences were found between rest-1 vs. rest-2 and contraction-1 vs. contraction-2 among all the experiment phases, and interreader agreement was ICC=0.85 (MD) and ICC=0.79 (FA). Conclusions: Rapid DTI might prospectively act as a supporting tool for the evaluation of female pelvic floor muscle function, and incontinence assessment.