Fluorescence and two-photon absorption of push-pull aryl(bi)thiophenes: structure-property relationships

Special Issue in honor of Jean-Pierre SauvagePhotophysical and TPA properties of series of push-pull aryl(bi)thiophene chromophores bearing electron-donating (D) and electron-withdrawing (A) end-groups of increasing strength are presented. All compounds show an intense Intramolecular Charge Transfer (ICT) absorption band in the visible region. Increasing the D and/or A strength as well as the length of the conjugated path induces a bathochromic and hyperchromic of the absorption band as reported for analogous push-pull polyenes. Yet, in contrast with corresponding push-pull polyenes, a significant increase in fluorescence is observed. In particular, chromophores built from a phenyl-bithienyl conjugated path and bearing strong D and A end-groups were found to combine very large one and two-photon brightness as well as strong emission in the red/NIR region. These molecules hold promises as biphotonic fluorescent probes for bioimaging.Fundação para a Ciência e a Tecnologia (FCT

Can we compare SMS marketing to traditional marketing communications?

status: publishe

Can we compare SMS marketing to traditional marketing communications?

Nowadays most companies acknowledge the importance of SMS marketing in reaching and interacting with their customers (Kavassalis et al. 2003; Dickinger et al. 2004; Tsang, Ho & Liang 2004; Sharl, Dickinger & Murphy 2005; Muk 2007). However, there is much discussion in the press regarding the effectiveness when it comes to SMS marketing. Are customers willing to accept, reading and using SMS messages: how effective is SMS marketing compared to traditional marketing communications? The goal of this study is to investigate, on the one hand, the effectiveness of SMS advertising compared to traditional marketing communication for different aspects and, on the other hand, to analyse to what extent consumers are willing to accept commercial messages on their mobile phone, since the effectiveness of SMS marketing highly depends on this. The research results indicate that location and time, incentive, advertising appeal and product involvement have a significant positive influence on the attitude towards the ad, the attitude towards the brand and the consumers’ purchase intention for SMS advertising and not for the traditional marketing communications. In addition, the research results indicate that an incentive is necessary (especially for young mobile phone users) to increase the willingness to accept these kind of messages.SMS marketing; mobile phone; SMS advertising effectiveness

La signification des unités phasiques observées dans le mouvement balistique

info:eu-repo/semantics/publishe

Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo

Advanced LIGO and Advanced Virgo are monitoring the sky and collecting gravitational-wave strain data with sufficient sensitivity to detect signals routinely. In this paper we describe the data recorded by these instruments during their first and second observing runs. The main data products are gravitational-wave strain time series sampled at 16384 Hz. The datasets that include this strain measurement can be freely accessed through the Gravitational Wave Open Science Center at http://gw-openscience.org, together with data-quality information essential for the analysis of LIGO and Virgo data, documentation, tutorials, and supporting software