http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Š,tefane, Bogdan,Poe,gan, Franc,Kim, Eunsun,Choi, Eunyoung,Ribierre, Jean-Charles,Wu, Jeong Weon,Ponce-Vargas, Miguel,Le Guennic, Boris,Jacquemin, Denis,Canard, Gabriel,Zaborova, Elena,Fages Applied Science Publishers 2017 Dyes and pigments Vol.141 No.-
<P><B>Abstract</B></P> <P>The synthesis, characterization and (TD)-DFT calculations of the electrochemical and photophysical properties of novel ethynylene-analogues of hemicurcuminoids are described. These dyes are both emissive in solution and in the solid state. While compounds that emit through an efficient charge transfer (CT) state show solvatochromic behaviour associated with low fluorescence quantum yields, those lacking of donor groups show high fluorescence quantum yields of 70–80%, in solution. The latter dyes also present the advantage to emit in the solid state in the visible region with fluorescence quantum yields up to 23%. Their condensed phase spectrum can be bathochromically shifted to the near infrared region (742 nm) by appending a strong donor group.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Synthesis of new fluorophores based on hemicurcuminoid boron difluoride. </LI> <LI> Photophysical study reveals strong emission of the dyes not containing charge transfer states. </LI> <LI> Fluorescence properties of dyes in their condensed phase show aggregation induced emission. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Lee, K. J.,Woo, J. H.,Kim, E.,Xiao, Y.,Su, X.,Mazur, L. M.,Attias, A.-J.,Fages, F.,Cregut, O.,Barsella, A.,Mathevet, F.,Mager, L.,Wu, J. W.,D'Alé,o, A.,Ribierre, J.-C. The Royal Society of Chemistry 2016 Physical chemistry chemical physics Vol.18 No.11
<P>We investigate the photophysical properties of organic donor-acceptor dyad and triad molecular systems based on triphenylene and perylene diimide units linked by a non-conjugated flexible bridge in solution using complementary optical spectroscopy techniques. When these molecules are diluted in dichloromethane solution, energy transfer from the triphenylene to the perylene diimide excited moieties is evidenced by time-resolved fluorescence measurements resulting in a quenching of the emission from the triphenylene moieties. Simultaneously, another quenching process that affects the emission from both donor and acceptor units is observed. Solution ultrafast transient absorption measurements provide evidence of photo-induced charge transfer from either the donor or the acceptor depending upon the excitation. Overall, the analysis of the detailed time-resolved spectroscopic measurements carried out in the dyad and triad systems as well as in the triphenylene and perylene diimide units alone provides useful information both to better understand the relations between energy and charge transfer processes with molecular structures, and for the design of future functional dyad and triad architectures based on donor and acceptor moieties for organic optoelectronic applications.</P>
O. Gutierrez,R. Balart,D. Lascano,L. Quiles-Carrillo,E. Fages,L. Sanchez-Nacher 한국섬유공학회 2020 Fibers and polymers Vol.21 No.5
This work is focused on the upgrading olive oil pomace to obtain high environmentally friendly insulationmaterials for the construction and building industry. Upgrading of these wastes has been carried out by using the wet-laidtechnology in combination with different thermoplastic binder fibers both from natural and synthetic origin. After the wetlaidprocess, the obtained veils or non-wovens were subjected to different processes: a hot-press moulding process or acontinuous lamination process. The acoustic insulation properties were obtained by the Kundt’s tube while the thermalinsulating properties were obtained through determining heat transmission resistance (R) and heat absorption parameter (λ). These tests have revealed the excellent insulation properties of the olive pomace-derived materials, specifically, those basedon high surface density non-wovens. The complementary process that follows wet-laid, i.e. hot-press moulding orcontinuous lamination process has a remarkable effect on insulation behaviour. In particular, the hot-pressed materials fromolive pomace show better acoustic insulation while the continuously laminated materials offer the best thermal insulationproperties.