Spectroscopic studies of spin-coated dye-in-polymer films. On the relationship between compatibility and aggregation of small molecules in polymer matrices

Law, Kock‐Yee

doi:10.1016/0032-3861(82)90184-7

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…It is obvious that the addition of PbS reduces the film thickness. It has been reported that I. double-logarithmic plots yield a straight line relationship between film thickness and rotation rate for polymers 17 and polymer-dye films, 22 but other reports disagree. 15 The films described here do not disclose such a linear dependence (Fig.…”

Section: A Preparation and Characterization Of Filmsmentioning

confidence: 96%

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High refractive index films of polymer nanocomposites

Zimmennann¹,

Weibel²,

Caseri³

et al. 1993

J. Mater. Res.

107

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Solutions of PbS particles and gelatin were used for the preparation of nanocomposites by a spin-coating process. This allows for the preparation of nanocomposite films with controlled thickness, e.g., between 40 nm and 2 /mm for a film containing 45 wt. % PbS. Surface roughness and film thickness were investigated by surface profilometry and scanning electron microscopy (SEM). The refractive index at 632.8 nm can be expressed by a linear function of the volume fraction of PbS in the range of 0 to 55 vol. % PbS. In this range, the refractive index increases from 1.5 to 2.5 with increasing PbS ratio and belongs, therefore, to the highest refractive indices known for polymeric composite materials.

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Section: A Preparation and Characterization Of Filmsmentioning

confidence: 96%

“…Another method for the preparation of polymer 15 ' 17 " 21 or polymer-dye 22 films is spin coating. We found that homogeneous PbS-gelatin films can be created by spin coating with higher PbS content than is possible with the other methods investigated.…”

Section: A Preparation and Characterization Of Filmsmentioning

confidence: 99%

High refractive index films of polymer nanocomposites

Zimmennann¹,

Weibel²,

Caseri³

et al. 1993

J. Mater. Res.

107

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A novel chemically amplified positive deep UV photoresist with significantly reduced sensitivity to environmental contamination

Chatterjee

Jain

et al. 1992

Polymer Engineering & Sci

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t‐Boc protected Deep‐UV transparent polymers with photoacid generators have been widely investigated as potential positive deep‐UV resist systems. However, utility of these systems is seriously handicapped by environmental contaminants leading to an insoluble “surface skin” formation. Only with a specially controlled environment or by use of an “overcoat” material is the performance of these systems acceptable. We have investigated a series of t‐Boc protected poly(styrene‐maleimide) copolymers and poly(hydroxy styrene) polymers with onium‐salts. Upon incorporation of a special class of organic additive, the surface effects inherent to these positive deep‐UV systems are significantly reduced thereby avoiding any extraneous precaution of protecting the resist surface from a typical manufacturing environment. We evaluated these t‐Boc polymer/onium‐salt systems with different additives under a varied set of processing conditions. In addition, plausible structure‐activity relationship of these additives in controlling the surface effects is presented.

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Fluorescence probe for microenvironments: effect of solvent vapour on the properties of vapour-swollen polymers

Law

1984

Polymer

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Spectroscopic studies of spin-coated dye-in-polymer films. On the relationship between compatibility and aggregation of small molecules in polymer matrices

Cited by 5 publications

References 21 publications

High refractive index films of polymer nanocomposites

High refractive index films of polymer nanocomposites

A novel chemically amplified positive deep UV photoresist with significantly reduced sensitivity to environmental contamination

Fluorescence probe for microenvironments: effect of solvent vapour on the properties of vapour-swollen polymers

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