Copper phthalocyanine on hydrogenated and bare diamond (001)-2 × 1: influence of interfacial interactions on molecular orientations

Dongchen Qi; Jiatao Sun; Xingyu Gao; Li Wang; Shi Chen; Kian Ping Loh; Andrew T.S. Wee

doi:10.1021/la901204x

Copper phthalocyanine on hydrogenated and bare diamond (001)-2 × 1: influence of interfacial interactions on molecular orientations

Dongchen Qi, Jiatao Sun, Xingyu Gao^*, Li Wang, Shi Chen, Kian Ping Loh, Andrew T.S. Wee

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The molecular orientations of copper phthalocyanine (CuPc) organic semiconductor molecules on hydrogenated and bare diamond (001)-2 × 1 surfaces are studied using synchrotron-based photoemission spectroscopy (PES) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Angular-dependent NEXAFS reveals that the CuPc molecular assemblies are orientationally ordered and lying down on hydrogenated diamond, whereas they undergo a molecular reorientation on bare diamond from lying down at submonolayer coverage to standing up in multilayers. The molecular film on bare diamond also exhibits an order-disorder-order transition in the molecular orientations. The distinct molecular orientation within the CuPc films on both diamond (001) surfaces is explained in terms of the interplay between intermolecular interactions and molecule-substrate interactions.

Original language	English
Pages (from-to)	165-172
Number of pages	8
Journal	Langmuir
Volume	26
Issue number	1
DOIs	https://doi.org/10.1021/la901204x
Publication status	Published - 5 Jan 2010
Externally published	Yes

Access to Document

10.1021/la901204x

Cite this

@article{7337638b7f1746fbb55641c566f18042,

title = "Copper phthalocyanine on hydrogenated and bare diamond (001)-2 × 1: influence of interfacial interactions on molecular orientations",

abstract = "The molecular orientations of copper phthalocyanine (CuPc) organic semiconductor molecules on hydrogenated and bare diamond (001)-2 × 1 surfaces are studied using synchrotron-based photoemission spectroscopy (PES) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Angular-dependent NEXAFS reveals that the CuPc molecular assemblies are orientationally ordered and lying down on hydrogenated diamond, whereas they undergo a molecular reorientation on bare diamond from lying down at submonolayer coverage to standing up in multilayers. The molecular film on bare diamond also exhibits an order-disorder-order transition in the molecular orientations. The distinct molecular orientation within the CuPc films on both diamond (001) surfaces is explained in terms of the interplay between intermolecular interactions and molecule-substrate interactions.",

author = "Dongchen Qi and Jiatao Sun and Xingyu Gao and Li Wang and Shi Chen and Loh, {Kian Ping} and Wee, {Andrew T.S.}",

year = "2010",

month = jan,

day = "5",

doi = "10.1021/la901204x",

language = "English",

volume = "26",

pages = "165--172",

journal = "Langmuir",

issn = "0743-7463",

publisher = "American Chemical Society",

number = "1",

}

TY - JOUR

T1 - Copper phthalocyanine on hydrogenated and bare diamond (001)-2 × 1

T2 - influence of interfacial interactions on molecular orientations

AU - Qi, Dongchen

AU - Sun, Jiatao

AU - Gao, Xingyu

AU - Wang, Li

AU - Chen, Shi

AU - Loh, Kian Ping

AU - Wee, Andrew T.S.

PY - 2010/1/5

Y1 - 2010/1/5

N2 - The molecular orientations of copper phthalocyanine (CuPc) organic semiconductor molecules on hydrogenated and bare diamond (001)-2 × 1 surfaces are studied using synchrotron-based photoemission spectroscopy (PES) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Angular-dependent NEXAFS reveals that the CuPc molecular assemblies are orientationally ordered and lying down on hydrogenated diamond, whereas they undergo a molecular reorientation on bare diamond from lying down at submonolayer coverage to standing up in multilayers. The molecular film on bare diamond also exhibits an order-disorder-order transition in the molecular orientations. The distinct molecular orientation within the CuPc films on both diamond (001) surfaces is explained in terms of the interplay between intermolecular interactions and molecule-substrate interactions.

AB - The molecular orientations of copper phthalocyanine (CuPc) organic semiconductor molecules on hydrogenated and bare diamond (001)-2 × 1 surfaces are studied using synchrotron-based photoemission spectroscopy (PES) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Angular-dependent NEXAFS reveals that the CuPc molecular assemblies are orientationally ordered and lying down on hydrogenated diamond, whereas they undergo a molecular reorientation on bare diamond from lying down at submonolayer coverage to standing up in multilayers. The molecular film on bare diamond also exhibits an order-disorder-order transition in the molecular orientations. The distinct molecular orientation within the CuPc films on both diamond (001) surfaces is explained in terms of the interplay between intermolecular interactions and molecule-substrate interactions.

UR - http://www.scopus.com/inward/record.url?scp=73649121946&partnerID=8YFLogxK

U2 - 10.1021/la901204x

DO - 10.1021/la901204x

M3 - Article

AN - SCOPUS:73649121946

SN - 0743-7463

VL - 26

SP - 165

EP - 172

JO - Langmuir

JF - Langmuir

IS - 1

ER -

Copper phthalocyanine on hydrogenated and bare diamond (001)-2 × 1: influence of interfacial interactions on molecular orientations

Abstract

Access to Document

Other files and links

Fingerprint

Cite this