文章信息/Info

Title:

Research on Preparation of Highly Stable Nano Y-TiOPc and Its Application Performance

文章編號:

1674-3962(2021)03-0189-09

作者:

劉　流; 韓明明; 張亞琴; 董曉菲; 劉紅麗; 王世榮; 李祥高

（天津大學化工學院 天津市功能精細化學品技術工程中心，天津 300350）

Author(s):

LIU Liu;  HAN Mingming;  ZHANG Yaqin;  DONG Xiaofei;  LIU Hongli;  WANG Shirong; LI Xianggao

(Tianjin Engineering Research Center of Functional Fine Chemicals, School of Chemical Engineering, Tianjin University, Tianjin 300350, China)

關鍵詞:

Y型酞菁氧鈦; 三氟乙酸; 穩定性; 分散; 光電導性能

Keywords:

Y-TiOPc;  trifluoroacetic acid;  stability;  dispersion;  photoconductivity

分類號:

TM91.4; O472

DOI:

10.7502/j.issn.1674-3962.202004004

文獻標志碼:

A

摘要:

納米Y型酞菁氧鈦（Y-TiOPc）在600~900 nm范圍具有很強的光吸收特性，因此在光電轉換材料與器件方面具有非常可期待的應用。Y-晶型不穩定，易轉化成穩定但光電響應性差的β-晶型，從而導致材料和器件性能劣化。因此，高穩定性Y-TiOPc納米材料的綠色制備方法和高性能器件研究是有機光電領域的重要問題之一。以三氟乙酸溶解TiOPc，將得到的溶液滴加到0 ℃的乙醇溶液中；然后，在剪切速度為900 r/min的強剪切作用下形成的1, 2-二氯乙烷/水微乳液中(此時微乳液的溫度為30 ℃)，調節析出沉淀晶型2 h，得到納米Y-TiOPc。得到的Y-TiOPc的平均粒徑為2.86 nm，結晶度93.82%，且在丁酮/環己酮體系中超聲波或球磨分散作用4 h后晶型保持穩定，以其制備的分散液靜置30 d后的透射率變化率為0.53%。將制得的納米Y-TiOPc作為載流子產生材料制備有機光導器件，其對780 nm激光的響應性能為：V0=-878.89 V，Rd=-12.10 V/s，Vr=-14.65 V，E1/2=0.17 μJ/cm2。因此，本工作介紹了一種制備高性能Y-TiOPc納米材料的有效方法。

Abstract:

Nano Y-type titanyl phthalocyanine (Y-TiOPc) has received substantial attention in photoelectric conversion materials and devices, because it possesses strong light absorption in the range of 600~900 nm. However，the green preparation of Y-TiOPc with high stability is still a great challenge, because Y-type crystal is unstable and easy to be converted into stable β-type crystal, resulting in poor photoelectric response. Herein, we reported an efficient strategy to fabricate highly stable nano Y-TiOPc. In this work, TiOPc was dissolved in trifluoroacetic acid, and the obtained solution was dropped into ethanol solution at 0 ℃. Afterwards, adding to the 1, 2-C2H4Cl2/H2O microemulsion formed under strong shear at the shearing speed of 900 rmp，the precipitates was adjusted at 30 ℃ for 2 h to obtain highly stable nano Y-TiOPc. As a result, the average crystal size of Y-TiOPc is 2.86 nm and the crystallinity of Y-TiOPc is 93.82%. In addition, the crystal exhibits a stable crystalline type in the Methyl Ethyl Ketone/Cyclohexanone system after ultrasonic or ball milling dispersion for 4 h. And, the transmittance variation of the dispersion prepared with Y-TiOPc reaches 0.53% after 30 d. The response properties of organic photoconductivity device using Y-TiOPc as carriers generating material shows the V0 of -878.89 V, Rd of -12.10 V/s, Vr of -14.65 V, and E1/2 of 0.17 μJ/cm2 with excitation of 780 nm laser. This work provides an effective method for achieving Y-TiOPc nanomaterials with excellent performance.