Series Df Light The Development Of Coordination Polymers And Luminescent Properties Of Comparative Study

Four　novel　d-f　coordination　polymers　have　been　synthesized　under　hydrothermal　condition,　besides　of　two　transition　metal　complexes　and　two　rare　earth　complexes.　The　crystal　structures　are　determined　by　X-ray　diffraction　and　their　formulas　are　presented　as　following:　(1) {[NdAg₂(C₆H₅NO₂)₄(H₂O)₂](NO₃)H₂O}n fl.λmax=412nm ;pl:417nm (2) [SmAg(C₆H₅NO₂)₄]n fl.λmax=431nm ;pl:531nm (3) [TbAg(C₆H₅NO₂)₄]n fl.λmax=546nm ; (4) [EuAg(C₆H₅NO₂)₄]n fl.λmax=417nm ;pl:544nm (5) [Ag₂(C₆H₅NO₂)₂]n fl ?max=468nm; pl:549nm (6) Sm₂(CH₃C₆H₄CO₂)₆(phen)₂ fl.λmax=617nm ; (7) Tb₂(CH₃C₆H₄CO₂)₆(phen)₂ fl.λmax=616nm ; (8) [Cu(C₆H₄NO₂)₂(H₂O)₃·H₂O] 　Their　photoluminescence　are　mainly　studied　and　the　fluorescent　max　emissions(fl.λmax;　pl.λmax)　are　shown　above.　Complexes(1)～(5)　can　exhibit　intense　blue　light.　These　complexes　have　phosphorescence　emission　except　for　complex(3).　Moreover,　they　have　long　delay-time.　Complexes(6)～(7)　can　exhibit　strong　red　light.　D-f　complexes　with　two　dissimilar　metal　coordination　sites,　one　is　specific　for　the　d　metal　ion　and　another　for　the　f　metal　ion.　But　these　d-f　complexes　are　bridged　by　ligands　between　two　different　metals　forming　infinite　structures.　These　special　structural　types　and　coordination　instance　affected　luminescent　wavelength　and　intensity.　So　we　seek　some　rules　of　the　relationship　between　luminescence　and　structures　by　the　elaborate　analysis　and　contrast.　They　are　theoretical　significance　for　the　research　of　interaction　between　different　ions　and　the　problems　of　energy　transfer.　At　the　time,　They　are　significant　referenced　and　practical　significance　to　cortrol　luminescent　wavelength　and　luminance　of　d–f–organic–ligands　luminescent　complexes.　In　addition,　their　IR,　UV-VIS-NIR　spectrum　are　measured　and　investigated　which　are　important　help　to　further　analyse　and　contrast　the　luminescent　property.