. (2011) 'Electrospinning superhydrophobic bers using surface segregating end-functionalized polymer additives. ', Macromolecules., 44 (16). pp. 6461-6470. Further information on publisher's website:http://dx.doi.org/10.1021/ma200852zPublisher's copyright statement:This document is the Accepted Manuscript version of a Published Work that appeared in nal form in Macromolecules, copyright c 2011 American Chemical Society after peer review and technical editing by the publisher. To access the nal edited and published work see http://dx.doi.org/10.1021/ma200852z. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. RECEIVED DATE (to be automatically inserted after your manuscript is accepted if requiredaccording to the journal that you are submitting your paper to) † Chemistry Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.ABSTRACT: We describe here a facile route for the in situ modification of the surface properties of fibres produced by electrospinning polystyrene containing small quantities of compatible polymer additives, end functionalized with 1-3 fluoroalkyl groups. Such additives undergo spontaneous surface segregation during the electrospinning process resulting in fibres with low surface energy, fluorine rich, superhydrophobic surfaces. Surface properties were analyzed using static contact angle measurements (with water as the contact fluid) and X-ray photoelectron spectroscopy. We report the effect of a number of parameters on the surface properties of the resulting polystyrene fibres including the molecular weight and concentration of functionalized additive, the number of fluoroalkyl groups, the effect of annealing and spinning solvent. The majority of the fibres were successfully produced using THF as the spinning 2 solvent and fibres with a contact angle of approximately 150 degrees were attainable. However, preliminary investigations using a blend of polystyrene and 4% by weight of such an additive, endfunctionalized with 3 C 8 F 17 group in a mixed solvent of DMF/THF (3:1 v/v) resulted in a mat of fibres with a superhydrophobic surface and a contact angle of 158 degrees.

This study presents two series of new host–guest chromophoric systems, where BODIPY dyes are organized into mesoporous silica. The dyes self‐assemble with surfactants to generate micellar templates that can direct the formation of the silica networks. The materials were characterized by means of small‐angle X‐ray scattering (SAXS) and transmission electron microscopy (TEM) to elucidate their structure, and by UV/Vis absorption spectroscopy to determine their optical properties. Dye‐loaded COK‐12 materials retain an ordered structure and exhibit a green fluorescence that slightly red‐shifts and undergoes quenching as the dye loading increases. A second system is based on MCM‐41 silica and works as a polychromatic antenna, where a high energy species forms within the template and drive excitation energy transfer in timescales down to 20 ps. Such systems show promising performances for the realization of photonic antennae, to be used as sensitizers for solar cells and photocatalytic devices.

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The Cover Feature illustrates how controlling the dye‐loading into mesoporous organosilica can be exploited to tune the fluorescence colour and obtain light‐harvesting antennae with fast energy transfer rates. More information can be found in the Article by F. Cucinotta et al. on page 196 in Issue 3, 2018 (DOI: 10.1002/cptc.201700144).

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