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SoAS - Scholarly Publications: Recent submissions

  • Photocatalytic hydrogen production at titania-supported Pt nanoclusters that are derived from surface-anchored molecular precursors 
    Khnayzer, Rony S.; Thompson, Lucas B.; Zamkov, Mikhail; Ardo, Shane; Meyer, Gerald J.; Murphy, Catherine J.; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    Degussa P-25 TiO2 bearing surface-anchored Pt(dcbpy)Cl2 [dcbpy = 4,4′-dicarboxylic acid-2,2′-bipyridine] prepared with systematically varied surface coverage produced Pt0 nanoparticles under bandgap illumination in the ...
  • Structure and activity of photochemically deposited “CoPi” oxygen evolving catalyst on titania 
    Khnayzer, Roni S.; Mara, Micheal W.; Huang, Jier; Shelby, Megan L.; Chen, Lin X.; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    The cobalt phosphate “CoPi” oxygen evolving catalyst (OEC) was photochemically grown on the surface of TiO2 photoanodes short-circuited to a Pt wire under bandgap illumination in the presence of Co(NO3)2 and sodium phosphate ...
  • Bis(carbazolyl) derivatives of pyrene and tetrahydropyrene 
    Khnayzer, Rony S.; Wex, Brigitte; El-Ballouli, Alaa O.; Trattnig, Roman; Fonari, Alexandr; Sax, Stefan; Kaafarani, Bilal R.; Risko, Chad; BArlow, Stephen; Patra, Digambara; Timofeeva, Tatiana V.; SAS; 200501196; 200603698; Natural Sciences; rony.khnayzer@lau.edu.lb; brigitte.wex@lau.edu.lb; Lebanese American University
    Tetrahydropyrene and pyrene have been functionalized in their 2,7-positions with carbazole and 3,6-di-tert-butylcarbazole groups, and the properties of these new compounds are compared to analogous carbazole and ...
  • Improving the catalytic activity of semiconductor nanocrystals through selective domain etching 
    Khnayzer, Rony S.; Lambright, Kelly; Khon, Elena; Moroz, Pavel; Perera, Dimuthu; Butaeva, Evgeniia; Lambright, Scott L.; Castellano, Felix N.; Zamkov, Mikhail; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    Colloidal chemistry offers an assortment of synthetic tools for tuning the shape of semiconductor nanocrystals. While many nanocrystal architectures can be obtained directly via colloidal growth, other nanoparticle ...
  • Robust cuprous phenanthroline sensitizer for solar hydrogen photocatalysis 
    Khnayzer, Rony S.; McCusker, Catherine E.; Olaiya, Babatunde S.; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    The Cu(I) metal-to-ligand charge-transfer complex, [Cu(dsbtmp)2]+ (dsbtmp = 2,9-di(sec-butyl)-3,4,7,8-tetramethyl-1,10-phenanthroline), exhibits outstanding stability as a visible-light-absorbing photosensitizer in ...
  • Catalytic proton reduction with transition metal complexes of the redox-active ligand bpy2PYMe 
    Khnayzer, Rony S.; Nippe, Micheal; Panetier, Julien A.; Zee, David Z.; Olaiya, Babatunde S.; Head-Gordon, Martin; Chang, Christopher J.; Castellano, Felix N.; Long, Jeffrey R.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    A new pentadentate, redox-active ligand bpy2PYMe has been synthesized and its corresponding transition metal complexes of Fe2+ (1), Co2+ (2), Ni2+ (3), Cu2+ (4), and Zn2+ (5) have been investigated for electro- and ...
  • Getting to the (square) root of the problem 
    Khnayzer, Rony S.; Haefle, Alexandre; Blumhoff, Jorg; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    We present experimental data illustrating that photochemical upconversion based on sensitized triplet–triplet annihilation can exhibit anti-Stokes emissions whose intensities with respect to the excitation power can vary ...
  • The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals 
    Khnayzer, Rony S.; Acharya, Krishna P.; O'Connor, Timothy; Diedrich, Geoffrey; Kirsanova, Maria; Klinkova, Anna; Roth, Daniel; Imbodent, Martene; Zamkov, Mikhail; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    The effect of hole localization on photocatalytic activity of Pt-tipped semiconductor nanocrystals is investigated. By tuning the energy balance at the semiconductor–ligand interface, we demonstrate that hydrogen production ...
  • Upconversion-powered photoelectrochemistry 
    Khnayzer, Rony S.; Blumhoff, Jorg; Harrington, Jordan A.; Haefle, Alexandre; Deng, Fan; Castellano, Felix N.; SAS; 200501196; Natural Sciences; rony.khnayzer@lau.edu.lb; Lebanese American University
    Upconversion photochemistry occurring between palladium(II) octaethylporphyrin (PdOEP, 1) and 9,10-diphenylanthracene (DPA, 2) in toluene successfully sensitizes nanostructured WO3 photoanodes (Eg = 2.7 eV) to sub-bandgap ...
  • Shape shifting in the conflict zone 
    Melki, Jad; Palmer, Lindsay; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    The war journalist is often portrayed as a ruggedly masculine individual who survives on hard work, self-sufficiency, and heroic dedication to the truth in a stoic culture and dangerous environment. Yet, the growing number ...
  • Using media to impact health policymaking 
    Melki, Jad; Bou-Karroum, Lama; El-Jardali, Fadi; Hemadi, Nour; Faraj, Yasmine; Ojha, Utkarsh; Shahrour, Maher; Darzi, Andrea; Ali, Maha; Doumit, Carine; Langlois, Etienne V.; Akl, Elie A.; AbouHaidar, Gladys Honein; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    Introduction: Media interventions can potentially play a major role in influencing health policies. This integrative systematic review aimed to assess the effects of planned media interventions—including social media—on ...
  • Trauma journalism education 
    Melki, Jad P.; Fromm, Megan E.; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    This study uses mixed methods to examine the state of trauma journalism education at journalism programmes. The survey of 623 faculty members from the Association for Education in Journalism and Mass Communication (A ...
  • Guiding digital and media literacy development in Arab curricula through understanding media uses of Arab youth 
    Melki, Jad P.; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    The role of new media in the Arab uprisings and the news of widespread surveillance of digital and mobile media have triggered a renewed interest in Arab audiences research, particularly as it pertains to these audiences' ...
  • The prevalence and determinants of anabolic steroid use among fitness centre attendees in Lebanon 
    Melki, Jad P.; Mufarrij, Afif J.; Hitti, Eveline A.; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    Background : Non-medical anabolic steroid (AS) use in non-professional athletes is an increasingly recognized public health problem in Europe and the United States but poorly studied in the Middle East. Research question ...
  • Mediated public diplomacy of the Islamic state in Iraq and Syria 
    Melki, Jad; Jabado, May; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    This study aims to provide an initial theoretical model for understanding and analyzing the mediated public diplomacy strategy of virtual states. It examines the mediated public diplomacy strategy of the Islamic State in ...
  • Digital activism 
    Melki, Jad; Mallat, Sarah; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    This article explores digital activism among Lebanese social movement organizations (SMOs) using a social movements theoretical framework. . It highlights the commonly used digital and social media tools for activism, ...
  • Global media and brand Dubai 
    Melki, Jad; Coombe, William; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    In the past two decades, Dubai has built a globally resonant place brand image out of an unknown location in the context of often negative regional associations. This case study addressed global news outlets’ role in ...
  • Media exposure,mediated social comparison to idealized images of muscularity, and anabolic steroid use 
    Melki, Jad P.; Hitti, Eveline A.; Oghia, Micheal J.; Mufarrij, Afif A.; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    This study examined the association between anabolic–androgenic steroid (AAS) use and dominant sociocultural factors, specifically media exposure to idealized images of male muscularity, and mediated social comparison ...
  • The interplay of politics, economics and culture in news framing of Middle East wars 
    Melki, Jad; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    A significant part of a modern war entails the struggle over news frames to influence public opinion. Studying these news frames in a comparative international context may offer insights into the factors behind frame ...
  • Journalism and media studies in Lebanon 
    Melki, Jad; SAS; 201508744; Communication Arts; jmelki@lau.edu.lb; Lebanese American University
    This study uses mixed-methods to map out the field of journalism and media studies in Lebanese universities and deploys a Q-technique to capture faculties’ opinions. The Q-analysis of 29 instructors revealed three groups ...

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