JP2012116843A - イリジウム(Ir)のフェニル及びフルオレニル置換フェニル−ピラゾール錯体 - Google Patents
イリジウム(Ir)のフェニル及びフルオレニル置換フェニル−ピラゾール錯体 Download PDFInfo
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Abstract
Description
有機発光デバイスを提供する。
Mは40より大きな原子量を有する金属であり;
(C−N)は置換又は非置換シクロメタル化配位子であり、(C−N)は金属に結合された少なくとも1の他の配位子とは異なり;
それぞれのRは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基は場合によっては置換基Rで置換されていることができ;
mは少なくとも1の値を有し;
nは少なくとも1の値を有し;nが3である場合、Rはシアノ基ではなく;
m+nは、上記金属に結合しうる配位子の最大数である。
一般に、OLEDは、アノード及びカソードの間に配置され且つこれらと電気的に接続された少なくとも1つの有機層を含む。本明細書で用いるように、「の間に配置され且つこれらと電気的に接続された」とは、言及した層が隣接し且つ直接接触していることをいうものではない。むしろ、言及した層の間に追加の層が配置されることを許容する。電流が流れると、アノードは正孔を(1以上の)有機層中に注入し、カソードは(1以上の)有機層中に電子を注入する。注入された正孔及び電子は、それぞれ反対に帯電した電極に向かって移動する。電子及び正孔が同一分子上に局在した場合、励起エネルギー状態を有する局在化した電子−正孔対である「励起子(エキシトン)」が形成される。この励起子が発光機構を通って減衰するときに光が放射される。いくつかの場合には、励起子は励起分子(エキシマー)又は励起錯体(エキシプレックス)上に局在することもできる。無放射機構、例えば熱減衰もまた生じうるが、通常は好ましくないと考えられる。
Mは40より大きな原子量を有する金属であり;
(C−N)は置換又は非置換シクロメタル化配位子であり、(C−N)は金属に結合された少なくとも1の他の配位子とは異なり;
それぞれのRは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基は場合によっては置換基Rで置換されていることができ;
mは少なくとも1の値を有し;
nは少なくとも1の値を有し;かつ、
m+nは、上記金属に結合しうる配位子の最大数である。
本発明の合成された錯体については、メリジオナル異性体(meridional isomers)とフェーシャル異性体(facial isomers)は同様に振る舞うことが観測されている。したがって、位置異性体の選択は、デバイス性能に大きな影響を及ぼさないと考えられる。メリジオナル異性体は、より容易に合成されることが発見されていることから好ましい。例えば、フェーシャル異性体は一般にメリジオナル異性体を変換することによって合成される。フェーシャル異性体は、有機金属化合物において現在最も一般的異性体であることから好ましいものでありうる。
本明細書で用いるように、略号は以下を表す:
CBP: 4,4’-N,N-ジカルバゾール-ビフェニル
m-MTDATA: 4,4’,4’’-トリス(3-メチルフェニルフェニルアミノ)トリフェニルアミン
Alq3: 8-トリス-ヒドロキシキノリンアルミニウム
Bphen: 4,7-ジフェニル-1,10-フェナントロリン
n-BPhen: n-ドープされたBPhen(リチウムでドープ)
F4-TCNQ: テトラフルオロ-テトラシアノ-キノジメタン
p-MTDATA: p-ドープされたm-MTDATA(F4-TCNQでドープ)
Ir(ppy)3: トリス(2-フェニルピリジン)-イリジウム
Ir(ppz)3: トリス(1-フェニルピラゾロト,N,C(2’)イリジウム(III)
BCP: 2,9-ジメチル-4,7-ジフェニル-1,10-フェナントロリン
TAZ: 3-フェニル-4-(1’-ナフチル)-5-フェニル-1,2,4-トリアゾール
CuPc: 銅フタロシアニン
ITO: インジウム錫オキシド
NPD: N,N’-ジフェニル-N,N’-ジ(1-ナフチル)-ベンジジン
TPD: N,N’-ジフェニル-N,N’-ジ(3-トリル)ベンジジン
BAlq: アルミニウム(III)ビス(2-メチル-8-ヒドロキシキノリナート)4-フェニルフェノレート
mCP: 1,3-N,N-ジカルバゾール-ベンゼン
DCM: 4-(ジシアノエチレン)-6-(4-ジメチルアミノスチリル-2-メチル)-4H-ピラン
DMQA: N,N’-ジメチルキナクリドン
PEDOT:PSS: ポリスチレンスルホネート(PSS)とポリ(3,4-エチレンジオキシチオフェン)の水性分散液
tpy: 2-(p-トリル)ピリジン
ppy: 2-フェニルピリジン
4,6-F2ppy: 2-(4’,6’-ジフルオロフェニル)ピリジン
4-MeO-4,6-F2ppy: 2-(4’,6’-ジフルオロフェニル)-4-メトキシピリジン
4’-DMA-4,6-F2ppy: 2-(4’,6’-ジフルオロフェニル)-4-(N,N-ジメチルアミノ)ピリジン
2-thpy: 2-(2’-チエニル)ピリジン
(46dfppz)2Ir(ppy): ビス(1-(4,6-ジフルオロフェニル)ピラゾレート-N,C2’)イリジウム(III)(2-フェニルピリジナート-N,C2’)
(46dfppz)2Ir(tpy): ビス(1-(4,6-ジフルオロフェニル)ピラゾレート-N,C2’)イリジウム(III)(2-(p-トリル)ピリジナート-N,C2’)
(46dfppz)2Ir(4’,6’-F2ppy): ビス(1-(4,6-ジフルオロフェニル)ピラゾレート-N,C2’)イリジウム(III)(2-(4’,6’-ジフルオロフェニル)ピリジナート-N,C2’)
(46dfppz)2Ir(4-MeO-4’,6’-F2ppy): ビス(1-(4,6-ジフルオロフェニル)ピラゾレート-N,C2’)イリジウム(III)(2-(4’,6’-ジフルオロフェニル)-4-メトキシピリジナート-N,C2’)
(46dfppz)2Ir(4-DMA-4’,6’-F2ppy): ビス(1-(4,6-ジフルオロフェニル)ピラゾレート-N,C2’)イリジウム(III)(2-(4’,6’-ジフルオロフェニル)-4-(N,N’-ジメチルアミノ)ピリジナート-N,C2’)
3bppz: 1-(3-ビフェニル)ピラゾール
4bppz: 1-(4-ビフェニル)ピラゾール
14dppz: 1,4-ジフェニルピラゾール
4bpppz: 1-(4-ビフェニル)-4-フェニルピラゾール
2dmflpz: 1-(2-(9,9-ジメチル)フルオレニル)ピラゾール
3dmflpz: 1-(3-(9,9-ジメチル)フルオレニル)ピラゾール
fac-Ir(3bppz)3: fac-トリス(1-(3-ビフェニル)ピラゾレート-N,C2’)イリジウム(III)
fac-Ir(4bppz)3: fac-トリス(1-(4-ビフェニル)ピラゾレート-N,C2’)イリジウム(III)
fac-Ir(14bppz)3: fac-トリス(1,4-ジフェニルピラゾレート-N,C2’)イリジウム(III)
fac-Ir(4bpppz)3: fac-トリス(1-(4-ビフェニル)-4-フェニルピラゾレート-N,C2’)イリジウム(III)
fac-Ir(2dmflpz)3: fac-トリス(1-(2-(9,9-ジメチル)フルオレニル)ピラゾレート-N,C2’)イリジウム(III)
本発明の具体的な代表的態様を、どのようにそれらの態様を作りうるかを含めてこれから説明する。本具体的態様、材料、条件、方法のパラメータ、装置等は、本発明を必ずしも限定しないことが理解される。
Claims (86)
- 以下の構造:
(式中、
Mは40より大きな原子量を有する金属であり;
(C−N)は置換又は非置換シクロメタル化配位子であり、(C−N)は前記金属に結合された少なくとも1の他の配位子とは異なり;
それぞれのRは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基は場合によっては置換基Rで置換されていることができ;
mは少なくとも1の値を有し;
nは少なくとも1の値を有し;かつ、
m+nは、前記金属に結合しうる配位子の最大数である。)
を有する化合物。 - nが2である、請求項1に記載の化合物。
- 各配位子が有機金属である、請求項2に記載の化合物。
- Mが、Ir、Pt、Pd、Rh、Re、Ru、Os、Tl、Pb、Bi、In、Sn、Sb、Te、Au、及びAgからなる群から選択される、請求項4記載の化合物。
- MがIrである、請求項5記載の化合物。
- R8、R10、及びR12〜R14がHである、請求項6記載の化合物。
- nが2であり、mが1である、請求項7記載の化合物。
- 置換基が独立して、置換又は非置換のフェニル、ナフチル、又はピリジルから選択される、請求項1記載の化合物。
- 少なくとも1つの置換基がフェニルである、請求項15記載の化合物。
- 前記化合物が以下の:
(式中、
Xは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基はさらに置換基Xで置換されていることができ;
Zは、−CH2、−CRR、−NH、−NR、−O、−S、−SiRから選択される。)
からなる群から選択される構造を有する、請求項1に記載の化合物。 - 前記化合物が燐光発光材料である、請求項1記載の化合物。
- 少なくとも1つの配位子が室温において燐光発光配位子であり、さらに少なくとも1つの配位子が室温において燐光発光配位子ではない、請求項1記載の化合物。
- 前記化合物が480nm未満のピーク波長で発光する、請求項1記載の化合物。
- 以下の構造:
(式中、
Mは40より大きな原子量を有する金属であり;
(C−N)は置換又は非置換シクロメタル化配位子であり;
それぞれのRは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基は場合によっては置換基RまたはCNで置換されていることができ;
Xは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
nは少なくとも1の値を有し;かつ、
m+nは、前記金属に結合しうる配位子の最大数である。)
を有する化合物。 - nが3であり、mが0である、請求項23に記載の化合物。
- Mが、Ir、Pt、Pd、Rh、Re、Ru、Os、Tl、Pb、Bi、In、Sn、Sb、Te、Au、及びAgからなる群から選択される、請求項24に記載の化合物。
- MがIrである、請求項25に記載の化合物。
- R8、及びR11〜R14がHである、請求項26に記載の化合物。
- 室温で発光性である第一の配位子に結合した金属を含む化合物であって、
正確に一つの第一の配位子が前記金属に結合し、かつ、
前記第一の配位子が、前記金属に結合したすべての他の配位子の三重項エネルギーに相当する波長よりも少なくとも80nm長い波長に相当する三重項状態を有し、かつ、
前記金属が40より大きな原子量を有する化合物。 - 前記第一の配位子が有機金属である、請求項28に記載の化合物。
- 前記第一の配位子が480nm未満の波長に相当する三重項エネルギーを有する、請求項28に記載の化合物。
- 前記第一の配位子が、500〜520nmの波長に相当する三重項エネルギーを有する、請求項28に記載の化合物。
- 前記第一の配位子が590nmより大きな波長に相当する三重項エネルギーを有する、請求項28に記載の化合物。
- 少なくとも第一の配位子と第二の配位子に結合した金属Mを含む化合物であって、
各配位子は有機金属であり;かつ、
前記第一の配位子は、前記第二の配位子の三重項エネルギーに相当する波長よりも少なくとも80nm長い波長に相当する三重項エネルギーを有し、かつ、
Mは40よりも大きな原子量を有する金属である、化合物。 - 前記第一の配位子が480nm未満の波長に相当する三重項エネルギーを有する、請求項33に記載の化合物。
- 前記第一の配位子が500〜520nmの波長に相当する三重項エネルギーを有する、請求項33に記載の化合物。
- 前記第一の配位子が590nmよりも長い波長に相当する三重項エネルギーを有する、請求項33に記載の化合物。
- (a)アノード;
(b)カソード;及び
(c)前記アノード及び前記カソードの間に配置され、かつ前記アノード及び前記カソード電気的に接続された発光層、
を含み、前記発光層が以下の構造:
(式中、
Mは40より大きな原子量を有する金属であり;
(C−N)は置換又は非置換シクロメタル化配位子であり、(C−N)は前記金属に結合された少なくとも1の他の配位子とは異なり;
それぞれのRは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基は場合によっては置換基Rで置換されていることができ;
mは少なくとも1の値を有し;
nは少なくとも1の値を有し;かつ、
m+nは、前記金属に結合しうる配位子の最大数である。)
を有する化合物をさらに含む有機発光デバイス。 - nが2である、請求項37に記載のデバイス。
- 各配位子が有機金属である、請求項38に記載のデバイス。
- Mが、Ir、Pt、Pd、Rh、Re、Ru、Os、Tl、Pb、Bi、In、Sn、Sb、Te、Au、及びAgからなる群から選択される、請求項40に記載のデバイス。
- MがIrである、請求項41に記載のデバイス。
- R8、R10、及びR12〜R14がHである、請求項42に記載のデバイス。
- nが2であり、mが1である、請求項43に記載のデバイス。
- 置換基が独立して、置換又は非置換のフェニル、ナフチル、又はピリジルから選択される、請求項37に記載のデバイス。
- 少なくとも1つの置換基がフェニルである、請求項51に記載のデバイス。
- 前記デバイスが以下の:
(式中、Xは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、前記4〜7員環式基はさらに置換基Xで置換されていることができ;
Zは、−CH2、−CRR、−NH、−NR、−O、−S、−SiRから選択される。)
からなる群から選択される構造を有する、請求項37に記載のデバイス。 - 前記化合物が燐光発光材料である、請求項37に記載のデバイス。
- 少なくとも1つの配位子が室温において燐光発光配位子であり、さらに少なくとも1つの配位子が室温において燐光発光配位子でない、請求項37に記載のデバイス。
- 前記化合物が480nm未満のピーク波長で発光する、請求項37に記載のデバイス。
- (a)アノード;
(b)カソード;及び
(c)前記アノードと前記カソードの間に配置され、且つ前記アノードと前記カソードに電気的に接続された発光層を含み、前記発光層はさらに以下の構造:
(式中、
Mは40より大きな原子量を有する金属であり;
それぞれのRは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基は場合によっては置換基R及びCNで置換されていることができる。)
を有する化合物をさらに含む有機発光デバイス。 - Mが、Ir、Pt、Pd、Rh、Re、Ru、Os、Tl、Pb、Bi、In、Sn、Sb、Te、Au、及びAgからなる群から選択される、請求項60に記載のデバイス。
- MがIrである、請求項61に記載のデバイス。
- R8、及びR11〜R14がHである、請求項62に記載のデバイス。
- (a)アノード;
(b)カソード;及び
(c)前記アノードと前記カソードの間に配置され、且つ前記アノードと前記カソードに電気的に接続された発光層を含み、前記発光層がさらに以下の構造:
室温で発光性の第一の配位子に結合した金属、
ここでは、
正確に1つの前記第一の配位子が前記金属に結合し、さらに、
前記第一の配位子は前記金属に結合する全ての他の配位子の三重項エネルギーに相当する波長よりも少なくとも80nm長い波長に相当する三重項エネルギーを有し、さらに
前記金属が40より大きな原子量を有する、
を有する化合物をさらに含む、有機発光デバイス。 - 前記第一の配位子が有機金属である、請求項64に記載のデバイス。
- 前記第一の配位子が480nm未満の波長に相当する三重項エネルギーを有する、請求項64に記載のデバイス。
- 前記第一の配位子が500〜520nmに相当する三重項エネルギーを有する、請求項64に記載のデバイス。
- 前記第一の配位子が590nmよりも長い波長に相当する三重項エネルギーを有する、請求項64に記載のデバイス。
- (a)アノード;
(b)カソード;及び
(c)前記アノードと前記カソードの間に配置され、且つ前記アノードと前記カソードに電気的に接続された発光層を含み、前記発光層がさらに以下の構造:
少なくとも第一の配位子及び第二の配位子に結合した金属M、
ここでは、
各配位子は有機金属であり、さらに
前記第一の配位子は、前記第二の配位子の三重項エネルギーに相当する波長よりも少なくとも80nm長い波長に相当する三重項エネルギーを有し、さらに
Mが40より大きな原子量を有する金属である、
を有する化合物をさらに含む、有機発光デバイス。 - 前記第一の配位子が、480nm未満の波長に相当する三重項エネルギーを有する、請求項69に記載のデバイス。
- 前記第一の配位子が、500〜520nmの波長に相当する三重項エネルギーを有する、請求項69に記載の化合物。
- 前記第一の配位子が、590nmよりも長い波長に相当する三重項エネルギーを有する、請求項69に記載のデバイス。
- 前記デバイスが消費財に組み込まれる、請求項69記載のデバイス。
- (a)アノード;
(b)カソード;及び
(c)前記アノードと前記カソードの間に配置され、且つ前記アノードと前記カソードに電気的に接続された発光層を含み、
前記発光層がさらに以下の構造:
(式中、
それぞれのRは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、さらに前記4〜7員環式基は場合によっては置換基Rで置換されていることができる。)
を有する化合物をさらに含む、有機発光デバイス。 - R8、R10及びR12〜R14がHである、請求項75に記載のデバイス。
- 置換基が、置換又は非置換のフェニル、ナフチル、又はピリジルから独立して選択される、請求項74に記載のデバイス。
- 少なくとも1つの置換基がフェニルである、請求項77に記載のデバイス。
- 前記化合物が以下の:
(式中、Xは独立して、水素、アルキル、アルケニル、アルキニル、アルキルアリール、CN、CF3、CO2R、C(O)R、NR2、NO2、OR、ハロゲン、アリール、ヘテロアリール、置換アリール、置換ヘテロアリール、又はヘテロ環式基、から選択され;
加えて又はそれに代えて、任意選択された2つの隣接置換位置は一緒になって、独立して縮合4〜7員環式基を形成し、前記環式基はシクロアルキル、シクロヘテロアルキル、アリール、又はヘテロアリールであり、前記4〜7員環式基はさらに置換基Xで置換されていることができ;
Zは、−CH2、−CRR、−NH、−NR、−O、−S、−SiRから選択される。)
からなる群から選択される構造を有する、請求項74に記載のデバイス。 - 前記配位子が燐光発光配位子である、請求項74に記載のデバイス。
- 前記配位子が、480nm未満の波長に相当する三重項エネルギーを有する、請求項74に記載のデバイス。
- 前記第一の配位子が、500〜520nmの波長に相当する三重項エネルギーを有する、請求項74に記載のデバイス。
- 前記第一の配位子が、590nmより長い波長に相当する三重項エネルギーを有する、請求項74に記載のデバイス。
- 前記デバイスが消費財に組み込まれる、請求項74に記載のデバイス。
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2015
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| JP2001247859A (ja) * | 1999-12-27 | 2001-09-14 | Fuji Photo Film Co Ltd | オルトメタル化イリジウム錯体からなる発光素子材料、発光素子および新規イリジウム錯体 |
| JP2002105055A (ja) * | 2000-09-29 | 2002-04-10 | Fuji Photo Film Co Ltd | イリジウム錯体またはその互変異性体の製造方法 |
| WO2003022008A1 (en) * | 2001-08-29 | 2003-03-13 | The Trustees Of Princeton University | Organic light emitting devices having carrier transporting layers comprising metal complexes |
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| JPN6010048589; Christine Deuschel-Cornioley, Rainer Luond, Alex von Zelewsky: '47. Cyclometalated Compounds of Platinum(II) with Two Different C,N-Aromatic Ligands' HELVETICA CHIMICA ACTA Vol.72, No.2, 1989, p.377-382, Wiley * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015120717A (ja) * | 2003-03-24 | 2015-07-02 | ユニバーシティ オブ サザン カリフォルニア | イリジウム(Ir)のフェニル及びフルオレニル置換フェニル−ピラゾール錯体 |
| JP2014152116A (ja) * | 2013-02-05 | 2014-08-25 | Nippon Shokubai Co Ltd | 有機金属錯体 |
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