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The complex hydrogen\u2010bond networks, particularly in compound <jats:bold>I<\/jats:bold>, have been studied by advanced high\u2010resolution solid\u2010state NMR spectroscopy that combines homonuclear recoupling techniques (two\u2010dimensional <jats:sup>1<\/jats:sup>H\u2010<jats:sup>1<\/jats:sup>H DQF and <jats:sup>1<\/jats:sup>H\u2010<jats:sup>1<\/jats:sup>H RFDR MAS NMR) and combined rotation and multiple\u2010pulse spectroscopy (two\u2010dimensional <jats:sup>1<\/jats:sup>H\u2010<jats:sup>1<\/jats:sup>H FS\u2010LG, <jats:sup>1<\/jats:sup>H\u2010<jats:sup>31<\/jats:sup>P FS\u2010LG). The fine details of the crystal structure of <jats:bold>I<\/jats:bold> have been elucidated, mainly those involving the \u03c0\u2013\u03c0 stacking of 8\u2010hydroxyquinoline and the relative orientation of adjacent such molecules. Compound <jats:bold>II<\/jats:bold> exhibits an emission from the lowest triplet\u2010state energy (\u03c0\u2013\u03c0* 0\u2010phonon transition) of the aromatic rings at 320 nm (31250 cm<jats:sup>\u20131<\/jats:sup>) from 14 K to room temperature. In contrast, the triplet emission of <jats:bold>I<\/jats:bold> at 530 nm (18868 cm<jats:sup>\u20131<\/jats:sup>) is only detected at low temperature, because of thermally activated non\u2010radiative mechanisms. The emission spectra of <jats:bold>I<\/jats:bold> and <jats:bold>II<\/jats:bold> display a lower\u2010energy component with a larger life time, which results from the formation of an excimer state that originated from the \u03c0\u2013\u03c0 phenanthroline and hydroxyquinoline interactions, respectively. (\u00a9 Wiley\u2010VCH Verlag GmbH &amp; Co. KGaA, 69451 Weinheim, Germany, 2006)<\/jats:p>","DOI":"10.1002\/ejic.200600680","type":"journal-article","created":{"date-parts":[[2006,11,3]],"date-time":"2006-11-03T08:47:47Z","timestamp":1162543667000},"page":"4741-4751","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Crystal Structure, Solid\u2010State NMR Spectroscopic and Photoluminescence Studies of Organic\u2010Inorganic Hybrid Materials (HL)<sub>6<\/sub>[Ge<sub>6<\/sub>(OH)<sub>6<\/sub>(hedp)<sub>6<\/sub>]\u00b72(L)\u00b7<i>n<\/i>H<sub>2<\/sub>O, L = hqn or phen"],"prefix":"10.1002","volume":"2006","author":[{"given":"Lu\u00eds","family":"Mafra","sequence":"first","affiliation":[]},{"given":"Filipe A.","family":"Almeida Paz","sequence":"additional","affiliation":[]},{"given":"Fa\u2010Nian","family":"Shi","sequence":"additional","affiliation":[]},{"given":"Rute A.","family":"S\u00e1 Ferreira","sequence":"additional","affiliation":[]},{"given":"Lu\u00eds D.","family":"Carlos","sequence":"additional","affiliation":[]},{"given":"Tito","family":"Trindade","sequence":"additional","affiliation":[]},{"given":"Christian","family":"Fernandez","sequence":"additional","affiliation":[]},{"given":"Jacek","family":"Klinowski","sequence":"additional","affiliation":[]},{"given":"Jo\u00e3o","family":"Rocha","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2006,11,22]]},"reference":[{"key":"e_1_2_6_1_2","unstructured":"A. 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