Optical materials based on copper (I) complexes and CdTe quantum dots loaded in solid matrices

Leandro P. Ravaro; Peter C. Ford; Andrea S. S. de Camargo

doi:10.1117/12.2283503

25 August 2017 Optical materials based on copper (I) complexes and CdTe quantum dots loaded in solid matrices

Leandro P. Ravaro, Peter C. Ford, Andrea S. S. de Camargo

Proceedings Volume 10362, Organic Light Emitting Materials and Devices XXI; 103622M (2017) https://doi.org/10.1117/12.2283503
Event: SPIE Organic Photonics + Electronics, 2017, San Diego, California, United States

Abstract

This work reports the photophysical properties of copper (I) complexes and CdTe QDs loaded in a mesoporous silica matrix obtained by sol-gel method with an average pore diameter of 10 nm. The colloidal suspension of CdTe, synthesized in aqueous phase, presents maximum emission at λ_em = 520 nm with full width at half maximum (FWHM) of 45 nm. While loaded into the solid SiO₂ matrix, the QD emission had small shift, according to the type of incorporation strategy. The complexes Cu₄I₄py₄ (1) and C₃₀H₂₈N₂O₂PCuI (2) incorporated on mesoporous silica showed a shift in emission of λ_em = 580 nm to 645 nm and λ_em = 660 nm to 575 nm, respectively. This shift of the emission is caused by distortion of the molecular complex, in the MLCT excited state, inside the matrix, known as rigidochromic effect. Also, a sensitivity of these hybrids materials (1@SiO₂ and 2@SiO₂) was observed to oxygen. The mesoporous matrix dispersed the molecules of the complex, so as to enable a reversible interaction with oxygen in the center of the metal that quenches of luminescence and provides a new functionality to the complex. The new functional materials proposed in this study have potential for applications in optical materials devices.

Citation Download Citation

Leandro P. Ravaro, Peter C. Ford, and Andrea S. S. de Camargo "Optical materials based on copper (I) complexes and CdTe quantum dots loaded in solid matrices", Proc. SPIE 10362, Organic Light Emitting Materials and Devices XXI, 103622M (25 August 2017); https://doi.org/10.1117/12.2283503

ACCESS THE FULL ARTICLE

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