Prof. Jin Xu Profile

Prof. Jin Xu

at Southeast Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 4 January 2008 Paper

Relations of two-photon absorption property and molecular structure in phenylenevinylene chromophores

Jin Xu, Feng Chu, Wei Huang, Chang Liu, Changgui Lu, Yiping Cui, Junxiang Zhang, Xiaokou Liu, Long Lu

Proceedings Volume 6839, 683924 (2008) https://doi.org/10.1117/12.757594

KEYWORDS: Chromophores, Absorption, Electrons, Luminescence, Molecules, Transmittance, 3D image processing, Lutetium, Photodynamic therapy, Spectroscopy

Read Abstract +

In this paper, we performed experimental and quantum-chemical studies on a series of symmetrically substituted phenylenevinylene chromophores with different lengths of conjugated chains and different electro negativity of substitution groups to provide an insight into the nature of the two-photon absorption (TPA) processes and to reveal structure-property relations. TPA spectra were obtained at the wavelengths ranging from 600 to 1000 nm with 6ns laser pulses of 10Hz repetition rate. The TPA spectra show that absorption band is mainly related to the transition of electrons btween the orbital localized at phenyl rings of the conjugated chains. Quantum-chemical calculations were performed with MOLCAO (Molecular Orbital as a Linear Combination of Atomic Orbitals) method to calculate the positions of the electronic levels and the shapes of the molecular orbitals. Considering all of the series of symmetrically substituted phenylenevinylene chromophores, the planar structure and the energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) is influenced significantly by the length of conjugated chains and the electro negativity of substitution groups. Structure-property relations revealed that the TPA cross section tends to be enhanced by an increase in the electro negativity of the substitution groups and tends to be reduced by an interruption of the conjugated chain.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years