<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">D. Papadakis</style></author><author><style face="normal" font="default" size="100%">Diamantopoulou, A.</style></author><author><style face="normal" font="default" size="100%">P.A. Pantazopoulos</style></author><author><style face="normal" font="default" size="100%">D. Palles</style></author><author><style face="normal" font="default" size="100%">E. Sakellis</style></author><author><style face="normal" font="default" size="100%">N. Boukos</style></author><author><style face="normal" font="default" size="100%">N. Stefanou</style></author><author><style face="normal" font="default" size="100%">V. Likodimos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nanographene oxide-TiO&lt;sub&gt;2&lt;/sub&gt; photonic films as plasmon-free substrates for surface-enhanced Raman scattering</style></title><secondary-title><style face="normal" font="default" size="100%">Nanoscale</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85074965933&amp;doi=10.1039%2fc9nr07680h&amp;partnerID=40&amp;md5=1e1c656e4551debd95f650d88ec88a87</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">44</style></number><volume><style face="normal" font="default" size="100%">11</style></volume><pages><style face="normal" font="default" size="100%">21542-21553</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The development of nanostructured semiconductors with tailored morphology and electronic properties for surface-enhanced Raman scattering (SERS) has been attracting significant attention as a promising alternative to conventional coinage metal SERS substrates. In this work, functionalized TiO2 photonic crystals by graphene oxide nanocolloids (nanoGO) are demonstrated as highly sensitive, recyclable, plasmon-free SERS substrates that combine slow-photon amplification effects with the high adsorption capacity and surface reactivity of GO nanosheets. Comparative evaluation of photonic band gap engineered nanoGO-TiO2 inverse opal films was performed on methylene blue SERS detection under different laser excitations in combination with rigorous theoretical simulations of the photonic band structure. A very low detection limit of 6 × 10-7 M and an enhancement factor of 5 × 104 along with excellent self-cleaning performance and reusability could be achieved by the interplay of slow-photon effects assisted by interfacial charge transfer between the analyte and the nanoGO-TiO2 semiconducting substrate. Slow-photon management in combination with judicious engineering of chemical enhancement in photonic nanostructures is accordingly proposed as an advanced approach for the design of efficient dielectric SERS substrates. © 2019 The Royal Society of Chemistry.</style></abstract><notes><style face="normal" font="default" size="100%">cited By 4</style></notes></record></records></xml>