Twisted Tethered Tolanes: Unanticipated Long-Lived Phosphorescence at 77 K

被引：77

作者：

Menning, Sebastian ^{[1
]}

Kraemer, Maximilian ^{[1
,2
]}

Coombs, Benjamin A. ^{[3
]}

Rominger, Frank ^{[1
]}

Beeby, Andrew ^{[3
]}

Dreuw, Andreas ^{[2
]}

Bunz, Uwe H. F. ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Organ Chem, D-69120 Heidelberg, Germany

[2] Heidelberg Univ, Interdisziplinares Zentrum Wissensch Rechnen, D-69120 Heidelberg, Germany

[3] Univ Durham, Dept Chem, Durham DH1 3LE, England

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2013年 / 135卷 / 06期

关键词：

EXCITED-STATE DYNAMICS; ACETYLENIC CARBON; RESTRICTED ROTATION; C(SP)-C(SP(3)) BONDS; PLANARIZATION; INTRACHAIN; BEHAVIOR; BARRIER; ALKYNES; AXIS;

D O I：

10.1021/ja400416r

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Influencing the communication within a conjugated system as diphenylacetylene is a challenging subject in molecular electronics. Some examples of twisted tolanes are known, where high twists have been achieved in the solid state by steric encumbrance. The insertion of a spacer system is an alternative way to tailor rotation. Only a few examples of such tethered tolanes exist, and they all suffer from small twist angles (<35 degrees). We report on tolanophanes containing a malonyl tether, where twist angles of almost 80 degrees were reached. Long-lived phosphorescence (4 s at 77 K) was recorded, and quantum-chemical calculations were performed to confirm the experimental results.

引用

页码：2160 / 2163

页数：4

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