Try the following reference:

Anal Biochem 2004 Mar 1;326(1):13-20.

Visible fluorescent detection of proteins in polyacrylamide gels without staining.

Carol L Ladner , Jing Yang, Raymond J Turner, Robert A Edwards

Thank for your reply Michael, I've already checked that paper, it's a fine research. However, as far as I can recall, Ladner et al. use powdered TCE from Sigma, at least that is the presentation I found over Sigma-Aldrich website, same as me, however they recommend casting an SDS-PAGE gel at 0.05% TCE v/v, but molarity of the TCE stock solution is not mentioned anywhere over the paper. 25 grams is all I could retrieve, so preparing the solution at the right concentration is a must. I know TCE can be directly disolved in stacking and resolving buffer, however it's easier yo handle it as a solution (no chance to misuse while weighing due).

I am retired and no longer have access to resources that I used while working. However, on Google I found a reference to 1% v/v for the TCE concentration. It seems to come for reference 30 of the Ladner paper. I hope that this text copied from Google is helpful.

... Gels were hand cast using miniprotean plates (Mini-PROTEAN V R , Bio-Rad, Australia) according to the Laemmli method [29] but modified to generate a 16% resolving gel. For fluorescent imaging, 1% (v/v) of 2,2,2trichloroethanol [30] was added to the resolving gel. After polymerisation of the resolving gel, the 4% stacking gel was poured on top of the resolving gel and left to polymerise after which the gels were stored in a dark cold room at least 3 h before use. ...